Petroleum has less density than water. So, when fire streams are applied to the burning liquid surface at such an angle that hot and / or burning oil is forced over the edge of the tank, the oil then flows down the side of the tank and you are now confronted with a fire on the ground as well as the one in the tank.
What are the reasons not to use fire streams during deal with burning oil?When you spray water on a regular fire, you're attempting to lower the flame's temperature and contain the fire.
Fuel for an oil fire is oil. Temperature and oxidizer are present in a fire (oxygen). Due to the fact that oil is lighter than water, an explosion may result if it floats above water while water sinks beneath oil.
Consequently, water shouldn't be used to put out oil fires.
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) the intensity of solar radiation near the earth is 1.4 kw/m^2. what force is exerted by solar radiation impinging normally on a 5.0 m^2 perfectly reflecting panel of an artificial satellite orbiting the earth?
The force exerted by the solar radiation is Force = 4.665 × [tex]10^-^1^1[/tex] N
The intensity of the given solar radiation is [tex]1.4 kw/m^2[/tex] = 1.4× [tex]10^3[/tex] W/m²
Given area of the panel is [tex]5 m^2[/tex]
Speed of the sound is 3 × [tex]10^8[/tex] m/s
Thus Pt = Total solar radiation pressure
Pt = [tex]2\frac{L}{c}[/tex]
Pt = [tex]2\frac{1.4 * 10^-^3}{3 * 10^8}[/tex]
which on further solving will give us :
Pt = 0.933 × [tex]10^-^1^1[/tex]
Total solar radiation pressure = 0.933 × [tex]10^-^1^1[/tex] Ws/m³
Force = Pressure * Area
Force = 0.933 × [tex]10^-^1^1[/tex] × 5
Force = 4.665 × [tex]10^-^1^1[/tex] N
The force exerted by the solar radiation is Force = 4.665 × [tex]10^-^1^1[/tex] N
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increasing the brightness of a beam of light without changing its color will increase
The photons speed will rise if a light beam is made brighter without altering its hue.
What is the simple definition of light?Light is indeed a form of electromagnetic radiation which makes things visible or enables the human eye to see. It can also be described as radiation that is seen by the human eye. Light reaches photon, which are minuscule energy bundles.
What is light and its types?Light that is visible to the human eye alone. It is an electromagnetic energy type. This sun is the primary source of all visible light. Lamps, flashlights, light bulbs, and other objects can also emit it. Another electromagnetic energy that generates heat is infrared light.
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what wrinkle resistance angle would you predict for a fabric specimen having an absorbance of 0.360? (round your answer to two decimal places.)
For a fabric specimen having an absorbance of 0.360,The absorbance value is 369.89.
Wrinkle-free or permanent ironing or permanent ironing is a textile finishing process that avoids wrinkles and creases and improves the appearance of items. Most cellulosic fabrics and cellulosic fabric blends tend to wrinkle or wrinkle.
Calculation:-
The equation is
y = 321.878 + 156.711x
= 321.878 + 156.711 × (0.360)
= 396.89.
Describes fabrics or garments that have been treated to retain their smooth appearance, shape, wrinkles, and/or creases after washing. Such garments require little or no ironing, especially if the garment has been tumble dried. Also called permanent press finish.
Wool woven shirts do not wrinkle easily, whereas 100% linen and cotton linen blend shirts naturally wrinkle easily. Fabrics made from synthetic materials that have inherent stretches, such as nylon and spandex, are also wrinkle-resistant.
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Different masses are hung on a spring scale calibrated in Newtons.
W(weight) = Given mass in Kg X Gravitational force (9.8 N/Kg)
a. The force exerted by gravity on 1 kg = 9.8 N.
b. The force exerted by gravity on 5 kg = ______ N.
c. The force exerted by gravity on _______ kg = 98 N.
d. The force exerted by gravity on 70 kg = ________ N.
Answer:
2121 newtons
Explanation:
Different masses are hung on a spring, then the different values obtained after solving are 49 N, 10 kg, and 686 N.
What is gravity?The fundamental force of attraction operating on all matter is recognized as gravity, also spelled gravity, in mechanics. It has no impact on identifying the interior properties of common matter because it is the weakest force known to exist in nature.
The formation and growth of planets, galaxies, and the universe are all under the influence of this long-range, cosmic force, which further determines the trajectories of objects throughout the universe and the entire universe.
As per the given information in the question,
1 kg = 9.8 N
(b)
5 kg = 5 × 9.8
5 kg = 49 N
(c)
x kg = 98 N
x = 98/9.8
x = 10 kg
(d)
70 kg = 70 × 9.8
70 kg = 686 N.
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when leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image. this is called
When leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image, this is called as taphonomy.
When covered, natural remaining parts enter a long and complex interaction by which their substance is changed into fossil structure. The investigation of this cycle is called taphonomy. It covers with the investigation of diagenesis, the arrangement of cycles that transform residue into rock.
A few fossils are protected as movies of carbon under the intensity and tension of profound entombment. For an enormous scope, this makes coal beds. Numerous fossils, particularly shells in youthful rocks, go through some recrystallization in groundwater. In others their substance is broken down, leaving open space (a shape) that is topped off with minerals from their environmental factors or from underground liquids (framing a cast).
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(Complete question) is:
When leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image. this is called as ______.
a 66.5-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. he then drops through a height of 1.64 m, and ends with a speed of 8.51 m/s. how much nonconservative work (in kj) was done on the boy? kj
Non-conservative work done is calculated to be = 1.252 kJ. Non-conservative forces are those forces which result in a loss of mechanical energy from the system.
What is non-conservative work?Nonconservative force is when the work depends on the path taken. is An example of a nonconservative force is friction.
Given:
Mass , m = 66.5 kg; Initial speed , u = 1.6 m/s
height of 1.64 m ; Final speed , v = 8.51 m/s
Work done by the non conservative forces is equal to the sum of total change in kinetic and potential energy:
As we know that, W= 1/2*m (v²- u²) + (0 -m*g*h)
=1/2* 66.5 * (8.51²- 1.6²) - (66.5* 9.81 * 1.64)
= 2322.84 -1069.87
= 1252.97 joules
=1.252 kJ
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a 55kg ice skater is at rest on a flat skating rink. a 198n horizontal force is needed to set the skater in motion. however, after the skater is in motion, a horizontal force of 175n keeps the skater moving at a constant velocity. find the coefficients of static and kinetic friction between the skates and the ice.
The Kinetic frictional coefficient is 0.325, the given body in motion.
What is the Friction coefficient?The ratio between the normal force pressing two surfaces together and the frictional force preventing motion between the surfaces. In most cases, the Greek letter mu is used to represent it. Mu is calculated as being equal to F/N, where F stands for frictional force and N is for normal force. because units of force are used to quantify both F and N. Friction's coefficient has no dimensions. For both static and kinetic friction, the coefficient of friction has a range of values.
Calculations:
The initial frictional force is due to static frictional force=μsmg=horizontal force applies
μsmg = 198
μs = 198/55 × 9.8 = 0.367
The final frictional force is due to kinematic frictional force = μkmg = horizontal force applied 175N
μkmg = 175
μk=175/55*9.8
kinetic frictional coefficient = 0.325.
Hence, the Kinetic frictional coefficient is 0.325, the given body in motion.
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you are trying to determine the distance to a single galaxy. the galaxy isn't particularly far away, but it also isn't very close. it has a lot of young stars. which would be the best choice for a standard candle to use for this galaxy and why?
The best choice for a standard candle to use for this galaxy is Cepheids Variable (young stars).
Astronomers can use what is known as a change in surface brightness along with the galaxy's color to calculate its distance from Earth. Most galaxies measured this way are millions of light years away. Edwin Hubble was able to show that the Andromeda Nebula is a separate galaxy from the Milky Way by using observations of Cepheid variable stars to estimate the distance to Andromeda.
According to Hubble's law, the distance to a galaxy can be calculated by dividing its receding velocity by the Hubble constant. Distances to nearby stars are determined accurately and precisely using parallax techniques. Viewing a celestial object from different observation points far away changes its position relative to more distant background stars and galaxies.
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what is the magnitude of the emf induced between the two sides of the shark's head?
The induced emf between the two sides of the shark's head is 44*10-6 volts. the process whereby changes in magnetic flux cause a coil to develop a potential difference.
Here's the complete question:A scalloped hammerhead shark swims at a steady speed of 1.0 m/s with its 83-cm-wide head perpendicular to the earth's 52 μT magnetic field. What is the magnitude of the emf induced between the two sides of the shark's head? Express your answer using two significant figures.
How to solve ?Given:
The speed of scalloped hammerhead shark is: va=1.0ms
The width of head is:
wa=83cm=0.83m.
The magnetic field is:
Ba=52μT=53×10−6T
The expression for the change in area through which magnetic field moves is,
ΔAa=Δla.wa
Here,
Δla and wa are change in length and width respectively.
The expression for the speed of scalloped hammerhead shark is,
va=Δla/Δt
Here ,
Δt is time interval.
The expression for the magnetic flux is,
Δϕa=Ba.ΔAa
The expression for the induced emf by using the Faraday's law is,
ea=Δϕa/Δt
Solving for the induced enf:
ea=Ba.Δla.wa/Δt
⟹Ba.wa.Δla/Δt⟹Ba.wa.va
The expression for the magnitude of emf induced between the two sides of shark's head is,
ea=Ba.wa.va
Solving for the magnitude of emf induced between the two sides of shark's head:
ea=53×10−6T×0.83m×1.0m/s⟹43.99×10−6V⟹≈44×10−6V
Thus the magnitude of emf induced between the two sides of shark's head is 44×10−6V.
What distinguishes induced emf from electromagnetic fields?According to Faraday's Law, if a magnetic flux across a loop changes, an induced emf results. The term "motional emf" is used to describe an emf that is changing because a conductor is moving in some way in a magnetic field.
What is another name for EMF?When no current is flowing, electromotive force equals the potential difference. the fact that both EMF and potential difference (V) are expressed in volts, but they are not the same thing.
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a planet of mass =7.15×1024 kg orbits a star of mass =1.95×1029 kg in a circular path. the radius of the orbit is =5.95×107 km. what is the orbital period planet of the planet in earth days?
The angular frequency obtained is 3.76 × 10⁻⁷ rad/sec. The orbital period planet of the planet in Earth days is 193.51 days.
Given data:
Mass of the planet (m) = 7.15 × 10²⁴ kg
Mass of the star (M) = 1.95 × 10²⁹ kg
Radius of the orbit (r) = 5.95 × 10⁷ km
Orbital period is given by T = (2π) ÷ ω
we know that,
(GMm) ÷ (R)² = mω²R
ω = √(GM) ÷ R³
On substituting the value:
ω = 3.76 × 10⁻⁷ rad/sec
The time period is:
T = (2π) ÷ 3.76 × 10⁻⁷
T = 16719389.62 sec
Hence on converting from seconds to days the time period obtained is:
T = 193.51 days.
Therefore, The orbital period planet of the planet in Earth days is 193.51 days.
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Choose the best answer to each of the following. Explain your reasoning with one or more complete sentences. What is the leading hypothesis for Venus's lack of water? (a) Venus formed closer to the Sun and accreted very little water. (b) Its water is locked away in the crust. (c) Its water molecules were broken apart, and hydrogen was lost to space
(c) Its water molecules were broken apart, and hydrogen was lost to space.
The evidence that the Venus once used to have water was the deuterium to hydrogen ratio in the atmosphere of Venus is about 150 times of earth.
Proofs are Venus must have started with oceans worth water.
The water is now escaped because when the UV rays from the sun as fallen upon the water the water molecules were broken and hydrogen went to the space.
And therefore, there is no water now present on the planet Venus.
scientist are still finding ways to discover life on the planet Venus and other planets.
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a car travels 11.8 m north and then travels 13.3 m east. what is the magnitude of the car's displacement?
The magnitude of car's displacement is 17.78 m.
Given that, distance travelled due north is 11.8 m
Distance travelled due east is 13.3 m
As it is said that the car travels north and then east, it forms the two sides of a right-angled triangle. The magnitude of third side is the magnitude of car's displacement.
From Pythagoras theorem, the expression for car's displacement can be written as,
AC² = AB² + BC²
where, AB and BC are the sides of the right triangle
AC is the displacement of the car
Making AC as subject, we have,
AC = √(AB² + BC²) = √(11.8² + 13.3²) = √(139.24 + 176.89) = 17.78 m
Thus, the magnitude of car's displacement is 17.78 m.
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PLEASE ANSWER QUICK!
Read over this situation where the same force is applied to two different objects with different masses and answer the question that follows.
Two students are having a race with toy cars.
10 N of force is applied to Bob's 5 kg car.
Larry also applies 10 N of force to his car, which has a mass of 8 kg.
.
.
Use Newton's 2nd law to explain which car will have a greater acceleration, allowing
it to win the race.
Answer: Bob will win the race
Explanation:
Force on both cars= 10N
Mass of Bob's car= 5 kg
Mass of Larry's car= 8 kg
According to Newton's 2nd Law of Motion,
Force(F)= Mass(m) * Acceleration(a)
=> Acceleration(a)= Force(F)/Mass(m)
Therefore,
Acceleration of Bob's car= Force on Bob's car/Mass of Bob's car
=10 N/ 5 kg
=2 ms^-2
Acceleration of Larry's car= Force on Larry's car/Mass of Larry's car
=10N/ 8 kg
=1.25 ms^-2
Since Bob's car has greater acceleration than Larry's car, Bob will win the race.
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Airplane flight best illustrates
A) Archimedes' principle.
B) Pascal's principle.
C) Bernoulli's principle.
D) Boyle's law.
The Bernoulli principle is best demonstrated through aeroplane flying.
The airfoil—the technical term for an aeroplane wing—has a curved upper surface, which Bernoulli's theorem tries to explain in terms of lift. According to the theory, this curvature causes air to move across the top of the wing more quickly than it does along the flat bottom of the wing. Energy conservation and fluid motion are the foundations of Bernoulli's equation. It is frequently used to describe how aircraft fly: "Because the speed is higher there, the air pressure is higher there than it is above the wing. Bernoulli's principle suggests that the pressure on the surfaces of the wing will be lower above than below, for instance, if the air flowing past the top surface of an aircraft wing is travelling faster than the air passing past the bottom surface. An upward lifting force is produced as a result of this pressure difference.
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Correctly identify the following formed elements. eBook Lymphocyte Neutrophil Eosinophil Platelets Monocyte Basophil Prev 1 of 17 Next >
Granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes are different kinds of white blood cells (T cells and B cells). Histamine is released by basophils to elicit an all-purpose immune response.
While battling germs and parasites, eosinophils can also cause allergic symptoms. B and T cells that function as lymphocytes protect the body from particular invaders. Monocytes remove dead cells from the body. Granulocytes, lymphocytes, and monocytes are the three primary types of white blood cells according to medical experts. All of the body's components receive nutrition and oxygen so they can continue to function. The lungs, kidneys, and digestive system use the blood to transport carbon dioxide and other waste products to be expelled from the body. Additionally, blood transports hormones throughout the body and fights infections.
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suppose etienne wants to calculate the velocity of the mass in the simulation, given the period, t, mass, m, and spring constant, k. why does hakim say it is not possible to use the kinematic equation v
There is currently no established method that can replicate gravity other than actual mass or acceleration.
The mass physics classroom's focal point is...
The location of the mass's center A position relative to an object or set of objects is known as the center of mass. It is the system's average location, weighted by the mass of each component. The center of mass is situated at the centroid for straightforward stiff objects with homogeneous density.
Mass simulation: what is it?
By 1800, the concept of denudation—the surface lowering of the land caused by mass waste and erosion—had been developed. It is implied by the term "planation" that denudation will continue until the land is reduced to a low plain just above the base level of erosion, which is usually the sea.
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Match each part of a nephron with its function. 1 Glomerulus 2 Distal tubule Bowman's capsule frenal corpuscle) 3 Permeability controlled by hormones: can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones; can absorb additional sodium and water. 1 Increases osmolarity of medulla; absorbs water. Absorbs 80% of filtrate, including water, glucose, and amino acids Help Save & E Seved (renal corpuscle 3 controlled by hormones; can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones, can absorb additional sodium and water. Increases osmolarity of medulla; absorbs water, Absorbs 80% of filtrate, including water, glucose, and amino acids. Filtration of plasma
While large proteins and cells are kept in the blood as long as the kidney filter is functioning normally, small blood molecules freely enter Bowman's space.
What is the main function of part nephron?By keeping the vital plasma proteins from the blood and ensuring selective ultrafiltration, the kidney glomerulus maintains its function. A fenestrated endothelium, GBM, and podocytes make up its three main parts, which together make up the glomerular filtration assembly.
Therefore, A glomerular filtrate is created when fluid and solutes from the blood are removed at the glomerulus in the nephron.
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A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, how fast does the skateboard roll away?
A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, the skateboard rolls away at 31.3 m/s.
What is the Law Of Conservation Of Linear Momentum?
Law of conservation of linear momentum states that the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is
P=mv.
If we have a system of bodies, then the total momentum is the sum of the individual momentums:
P = m₁v₁ +m₂v₂
If a collision occurs and the velocities change to v', the final momentum is:
P' = m₁v₁' +m₂v₂'
Since the total momentum is conserved, then:
P = P'
m₁v₁ +m₂v₂ =m₁v₁' +m₂v₂'
A girl of m1 = 49 kg rides an m2 = 4.2 kg skateboard and the common speed is v1 = v2= 1 m/s.
The girl jumps off the skateboard backward with a speed of v1'=-1.6 m/s (negative because it's opposite to the original direction). It's required to find the final speed of the skateboard. It will be calculated by solving for v2':
v₂'= m₁v₁ +m₂v₂ - m₁v₁' / m₂
= (49 × 1) + ( 4.2 × 1 ) - ( 49× (- 1.6) / 4.2
Calculating the values,
= 31.3 m/s.
The skateboard rolls away at 31.3 m/s.
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two current carrying wires are close and parallel to each other and have currents with the same magnitude. of the two currents were in the same direction, how would the magnetic fields of t he wires be affected?
A magnetic field is produced by an electric current. Depending on the fields' orientation, they can either attract or repel.
How do magnetic field produce electric current?Imagine your right thumb pointing in the direction of the current to determine the direction of the magnetic field on a wire. Your right hand's fingers will circle the wire in the same direction as the magnetic field. You can tell that the magnetic fields are aligned and will resist each other if two currents are running in the opposing directions.
The magnetic field will be opposing and the wires will attract when the currents run in the same direction.
Due to relativistic length contraction, electrons will "see" a higher density of electrons in the other wire if the currents are flowing in the opposite directions. Additionally, the wires will reject one another.
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speed of 0.986 c what would be the momentum of this proton? express your answer with the appropriate units.
The momentum of the proton with speed of 0.986 c is 4.20 × 10⁸ kJ - m/s.
Momentum is defined as the product of the mass of a particle and its velocity. Momentum is a vector quantity, which means it has both magnitude and direction. Isaac Newton's second law of motion says that the time rate of change of momentum is equal to the force acting on the particle.
Calculate the momentum by using the formula:
p = (m₀v)/√(1 - v²/c²)
Substituting the values we get,
⇒ p = (1.67 × 10⁻²⁷ × 0.986 c) / √{1 - (0.986/c)²}
⇒ p = (1.67 × 10⁻²⁷ × 0.986 c) / √{1 - (0.986)²}
⇒ p = 1.404 × 10⁻²⁶ c
⇒ p = 4.20 × 10⁸ kJ - m/s
Hence, the momentum of the proton is 4.20 × 10⁸ kJ - m/s.
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Schizophrenia is associated with an excess of receptors for Select one:
O a. acetylcholine O b. dopamine O c norepinephrine O d. serotonin
The "binge-then-purge" cycle of overeating and dieting, often using vomiting, laxatives, or fasting, is characteristic of which disorder? Select one:
O Histrionic Disorder
O Body Dimorphic Disorder
O Bulimia Nervosa
O Anorexia Nervosa
Jacob began experimenting with alcohol consumption at his fraternity at Appstate. He was confused when alcohol made him energetic at first but ultimately drowsy. He asked Dr. Ludwig about it and learned that alcohol affects both of these contradictory neurotransmitters: Select one:
O Norepinephrine and Serotonin Serotonin and GABA
O Glutamate and GABA
O Seagrams and Budweiser If the neurotransmitter serotonin is abnormally low in your brain you will most likely suffer from Select one: O a. panic attacks O b. depression O c. dissociative disorders. O d. schizophrenia.
The D2 receptors were much higher in schizophrenia patients compared to control subjects, which is consistent with the idea that schizophrenia is characterized by an excess of dopamine receptors.
The right answer is "dopamine O."
Are you calmer when taking dopamine?Presynaptic (excessive release of dopamine from dopamine nerve terminals) or postsynaptic (excessive dopamine uptake) dopamine overactivity (an increase in the density of D2 receptors or an increase in postreceptor action).
What occurs when overstimulated dopamine receptors?Dopamine overproduction, or excessive dopamine concentration in some regions of the brain but insufficient dopamine in other regions, is associated with increased competitiveness, aggression, and inability to regulate one's impulses. Disorders including ADHD, binge eating, addiction, and gambling are among disorders that can result from it.
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a large aquarium of height 5.00 m is filled with fresh water to a depth of 2.00 m. one wall of the aquarium consists of thick plastic 8.00 m wide. by how much does the total force on that wall increase if th
If a sizable aquarium with a height of 5.00 m is filled wit fresh water to the a depth of 2.00 m, the total force on that wall will grow to F=4.69510 5 N.
What does the word "force" mean in science?The word "force" has a clear definition in science. It is completely fair to refer to a force of this size as either a pushing or a pull. An object cannot be "contained" by a force or "exist in" it. A force is felt by one item coming from another. A force can be any object, whether it's living or not.
What are force and an example?The word "force" refers to an outside source that leads a body to have a tendency to alter or alter its status. The body can change shape, size, and direction when force is applied to it. Using your feet to kick a ball, open and close doors, or knead dough are some examples.
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if you hold one end of a metal nail against a piece of ice, the end in your hand soon becomes cold. which description is right? 1. temperature flows from the ice to your hand.
Right description: Your hand does not experience a flow of cold from the ice.
Does the ice's cold transfer to your hand to explain?Heat will transfer from a warmer object to a colder one if the temperatures of the two objects differ. For instance, when you hold an ice cube, heat from your warm hand is transmitted to the cold ice, melting it. Due to heat energy loss, your hand feels cold.
Why is it wrong to claim that a hot object warms a cold one?It is accurate to state that a rise in one object's thermal energy equals a decrease in the other's thermal energy, not temperature. The claim is true if the substance of the hot and warm objects is the same.
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in double replacement reactions, why will two metals not combine with each other when products are formed?
Two metals don't combine to form a new compound in a double replacement reaction because in this reaction ions are exchanged and metals can only lose electrons and not gain any.
What are Metals?Metals are a group of elements distinguished by a propensity to lose electrons. Metals are effective conductors of heat and electricity. Metals typically exist as solids at room temperature and normal atmospheric pressure, with the exception of mercury, which is a liquid. Metals belong to a class of substances that exhibit strong thermal and electrical conductivity, as well as malleability, ductility, and high-light reflection.
What is a Double replacement reaction?The positive and negative ions of two ionic compounds swap positions during a double-replacement reaction to create two new compounds. A and C are positively charged cations in the usual form of a double-replacement reaction (also known as a double-displacement reaction), whereas B and D are negatively charged anions. In an aqueous solution, double-replacement reactions typically take place between compounds. A reaction must produce one of the following in order to take place: a solid precipitate, a gas, or a molecular substance like water. Example AB + CD= AD + CB.
Hence, when two compounds of similar nature are reacted they do not combine as one compound must donate whereas the other compound must accept electrons in order to combine.
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A 0.039 kg bullet moving at 475 m/s strikes a stationary 5.7 kg wooden block. The bullet passes through the block and leaves with a velocity of 284 m/s. If the block was originally at rest, how fast does it move after being hit by the bullet?
use units and work out
The velocity of the block after it is hit by the bullet is 1.307 m/s.
What is velocity?Velocity is the rate of change of displacement.
To calculate the velocity of the block after it is hit by the bullet, we use the formula below.
Formula:
v = (mU-mV)/M............. Equation 1Where:
v = Final velocity of the blockU = Initial velocity of the bulletV = Final velocity of the bulletM = Mass of the blockFrom the question,
Given:
m = 0.039 kgM = 5.7 kgU = 475 m/sV = 284 m/sSubstitute these values into equation 1
v = [(0.039×475)-(0.039×284)]/5.7v = (18.525-11.076)/5.7v = 1.307 m/sHence, the velocity of the block is 1.307 m/s.
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a 0.850 kg block is attached to a spring with spring constant 13.0 n/m. while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 49.0 cm/s. part a what is the amplitude of the subsequent oscillations? express your answer with the appropriate units.
The amplitude of the subsequent oscillations is 4.898m.
Solution:
m = 0.850 kg
k = 13.0 N
0.32 = [tex]\sqrt{\frac{13.5}{0.75}*A }[/tex]
= √13.5/0.75
A = 4.898m
Oscillation is defined as the process of repeating fluctuations of a quantity or measure around its time equilibrium value. Oscillation can also be defined as the periodic fluctuation of a material between two values or its mean value.
Waves are said to vibrate. This means regular and repeated round trips. This variation can occur between extremes of position, force, or quantity. Different types of waves have different types of vibrations. Longitudinal wave oscillates parallel to the direction of the wave. Vibration alternates back and forth between two positions or states.
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The conservation of momentum is most closely related to Newton's?
The conservation of momentum is most closely related to Newton's third law.
According to the conservation of momentum, momentum is neither created nor destroyed, although it can change from one form to another.
According to Newton's third law, for every action, there is an opposite reaction, and energy is neither created nor destroyed. Rather the energy is changed from the action to the reaction in a given system and the amount of energy remains the same.
Both the conservation of momentum and Newton's third law imply that energy in a system can be converted but the value remains the same in a system and hence is closely related.
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a mass on a spring oscillates back and forth and completes one cycle in 0.5 sec. its maximum displacement is 3 cm. write an equation that models this motion.
x(t) = 0.03 cos(4t) is the equation that models the motion of the mass on a spring.
When has a spring's maximum displacement for a given mass?The mass is pushed towards the equilibrium position by the force of the spring. Because the mass is shifting direction as it reaches its maximum displacement location, velocity is zero.
The equation: can be used to simulate the motion of a mass on a spring.
x(t) = A cos(2πf t)
A = 0.03 m since the highest displacement is known to be 3 cm. We also know that the oscillation's period is 0.5 seconds, hence the frequency is:
f = 1/T = 1/0.5 = 2 Hz
Substituting the values of A and f in the equation, we get:
x(t) = 0.03 cos(2π × 2 t)
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the wave velocity of the first overtone frequency of a string is 75 m/s. what is the wave velocity of the fundamental frequency? opensax
The wave velocity of the fundamental frequency is 75 m/s.
The wave velocity of the fundamental frequency of a string can be calculated using the equation:
Wave Velocity = 2 x Overtone Frequency x Wavelength
Substitute the given values in the equation
Wave Velocity = 2 x (1/2 x 75 m/s) x Wavelength
Solve for the wavelength:
Wavelength = Wave Velocity / (2 x (1/2 x 75 m/s))
Substitute the given wave velocity in the equation:
Wavelength = 75 m/s / (2 x (1/2 x 75 m/s))
Simplify the equation:
Wavelength = 75 m/s / 75 m/s
Solve for the wavelength:
Wavelength = 1 m
Substitute the wavelength in the equation:
Wave Velocity = 2 x (1/2 x 75 m/s) x 1 m
Solve for the wave velocity:
Wave Velocity = 75 m/s
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imagine an experiment where we uniformly heat three containers, one with water, one with dry sand, one with damp sand. which one would experience the greatest increase in temperature?
Dry sand will experience the greatest increase in temperature when we uniformly heat three containers.
The reason behind is that the intermolecular force between the particles in dry sand is weakest as compared to water particles and damp sand particles. Because of weak intermolecular force, particles have certain amount of distance between each other, due to that on supplying continuous heat those particles feels the increased effect and the similar phenomenon is happened with all particles of dry sand, due to that there is a collective increase in temperature on continuously supply of heat.
Water particles and damp sand has strong intermolecular force of attraction as compared to dry sand, due to that they don't feel much experience of increased temperature.
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