Answer:
Explanation:
In order to determine how far you will have gone after 1.00 min, we need to calculate the distance traveled while coasting down the hill and the distance traveled while pedaling.
To calculate the distance traveled while coasting down the hill, we can use the equation:
distance = initial velocity * time + (1/2) * acceleration * time^2
Since you start at the top of the hill with an initial velocity of 0 m/s, and we know that the acceleration is 2.00 m/s^2, and time is unknown. we can solve for time using the final velocity equation:
velocity = acceleration * time + initial velocity
18 = 2*t + 0
t = 9 sec
Now we have time and acceleration, we can calculate distance.
distance = 0 * 9 + (1/2) * 2 * 9^2
distance = 81 m
Now we know how far you have traveled while coasting down the hill, we can calculate the distance traveled while pedaling.
We know that you are pedaling to maintain a constant speed of 18.0 m/s for 1.00 min, so we can use the formula:
distance = speed * time
distance = 18 * 1*60 = 1080 m
Therefore, in total, you have traveled 1080 + 81 = 1161 m from the time you left the hilltop.
Samuel placed a plastic container upside down over a paperclip. He held a strong magnet up to the side of the bowl and the paperclip moved toward the magnet. Which best explains the result of Samuel's investigation. A. The magnet caused a balanced force on the paperclip. B. The magnet caused a non-contact force on the paperclip. C. The magnet increased the amount of energy in the paperclip. D. The magnet reduced the net force acting on the paperclip.
Answer:
The magnet caused a non-contact force on the paperclip.
Place the following in order according to how fast sound travels through them: Gas, Liquid, Solid, Vacuum.
Answer:
1Vacuum, 2Gas, 3Liquid, 4Solid.
Explanation:
300,000 273,400 205,600 116,878
Answer:
Solids - fastest
Liquids - faster
Gases - slowest
Vacuum - Not at all
Explanation:
Sound waves have different speed in different mediums because:
different mediums have different densities so that's why speed is different (because speed of sound depends on density of mediums).
The United States is heading for its biggest political and constitutional crisis since the Civil War, and in the next three or four years there is a high risk of mass violence, the collapse of federal authority, and the division of the country into Republican and Democratic enclaves.
In the statement above. i believe that the United States is heading for its biggest political and constitutional crisis since the Civil War, and in the next three or four years there is a high risk of mass violence is a false statement.
What is the Civil War about?The American Civil War, also known as the War Between the States, was a conflict that lasted from 1861 to 1865 and resulted in the deaths of an estimated 620,000 soldiers and civilians.
The war was fought primarily in the Southern United States and pitted the Confederate States of America, made up of 11 southern states that had seceded from the United States, against the United States of America (the Union). The main cause of the war was the disagreement over the institution of slavery and states' rights.
Therefore, It is important for individuals and leaders to engage in peaceful and democratic processes to address any issues or conflicts that may arise. It is not productive to speculate on potential crises or violence.
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See full question below
The United States is heading for its biggest political and constitutional crisis since the Civil War, and in the next three or four years there is a high risk of mass violence, the collapse of federal authority, and the division of the country into Republican and Democratic enclaves. Explain
The most powerful ice breaker in the world was built in the former Soviet Union. The ship is almost 150 m long, and its nuclear engine generates 56 MegaWatts (56 E^6 W) of power. How much work can this engine do in 1.0 hour? (1 hour = 3600 seconds)
The work done by the engine is 2.016×10¹¹ J.
What is work done?Work is said to be done whenever a force moves an object through a distance.
To calculate the work done by the engine, we use the formula below.
Formula:
W = Pt..................... Equation 1Where:
W = Work doneP = Powert = TimeFrom the question,
Given:
P = 56 mega Watts = 56×10⁶ Wt = 1 hours = 3600 secondSubstitute these values into equation 1
W = 56×10⁶×3600W = 2.016×10¹¹ JHence, the work done is 2.016×10¹¹ J.
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Two bodies separated from
each other at a certain distance
started moving simultaneously
to meet each other - one with ar
acceleration of 2.4 m/s, and the
other with an acceleration of 4.8
m/s2. Determine the ratio of the
displacement module of the first
body to the displacement
module of the second body at
the moment of their meeting.
The result of the ratio of the displacement module of the second body at the point of meeting is 0.5.
How to find displacement ratio?To determine the ratio of the displacement of the first body to the displacement of the second body at the moment of their meeting, use the equation of motion:
d = vt + 1/2at²
where d is the displacement, v is the initial velocity, t is the time, and a is the acceleration.
Since the bodies are moving simultaneously towards each other, then assume that their initial velocities are zero. Also, at the moment of their meeting, their displacement will be the same, d₁ = d₂.
Assume that the time at which they meet is t, then:
d₁ = 1/2 * 2.4t²
And the equation for the displacement of the second body:
d₂ = 1/2 * 4.8t²
If d₁ = d₂
then, 1/2 * 2.4t² = 1/2 * 4.8t²
Solving this equation for t and substituting it into the equation for d₁ or d₂, the ratio of the displacement of the first body to the displacement of the second body: d₁/d₂ = 2.4/4.8 = 0.5 or 1/2
So, at the moment of their meeting, the displacement of the first body is half of the displacement of the second body.
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If you wanted to determine how mass affects acceleration, lost the independent and dependent variables and the constant.
This is the equations for a hyperbola if we plot mass as both the independent variable & acceleration as such dependent variable, again understanding Newton's second law.
What was the experiment's independent variable?The measured reaction is the dependent variable. The dependent variable is dependent on the variation in the independent variable, to put it another way.
What distinguishes dependent from independent behavior?In a scientific experiment, variables are the two most crucial variables. The independent variable is the one that is under the experimenter's control. The variable that adapts to the explanatory variables is known as the dependent variable.
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Oxygen has a molar mass of 32 g/mol. If 12 moles of oxygen are in a 0.1-m' container with an rms speed of 480 m/s, what is the pressure of the gas?
The pressure of the oxygen gas is 2.95 x 10⁵ Pa.
What is the pressure of the oxygen gas?
The pressure of the oxygen gas is calculated by applying the following formula as shown below.
Mathematically, the formula for the pressure of a gas at given root mean square pressure is given as
P ( O₂ ) = [ ( n R ( v² M / 3R ) / ( VO₂ ) ]
where;
n is the number of moles of the gasv is the root mean square speed of the gasR is the ideal gas constantM is the molar mass of the oxygen gasVO₂ is the volume of the oxygen gasP ( O₂ ) = [ ( n x v² M ) / (3 x VO₂ ) ]
The pressure of the oxygen gas is calculated as follows;
P ( O₂ ) = [ ( 12 x 480² x 0.032 ) / ( 3 x 0.1 ) ]
P ( O₂ ) = 2.95 x 10⁵ Pa
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Frici the cat has excellent hearing. He hears the tapping of his favorite treat from afar
in his plate in front of the door.
His owner dropped the treat into his plate from a height of 125 cm, the door is 30 meters from the garden gate, Frici
and he was wandering at the edge of the forest 300 meters from the garden entrance. Its reaction time is 0.1 seconds and 6.6
is speeding home at a speed of m/s.
How long after dropping the reward snack does Frici arrive if the speed of sound is 330 m/s?
Help:
Sub-question 1: How long will the reward wall fall if the difficulty acceleration is set to 10 m/s²
shall we round?
Sub-question 2: How long does it take for the voice to reach Frici?
Sub-question 3: How long does it take Frici The cat to reach her plate?
The time spent after dropping the reward snack is
0.5 seconds1 second4.55 secondsWhat are Frici's resolves?Generally, To determine how long it takes Frici to arrive at his plate after the treat is dropped, we need to calculate the time it takes for the sound of the treat hitting the plate to reach Frici, and then add the time it takes for Frici to run back home.
Sub-question 1: The time it takes for the treat to fall from a height of 125 cm can be calculated using the formula:
t = √(2h/g)
where
h is the height (125 cm) and g is the acceleration due to gravity (10 m/s²). The height must be converted to meters first. So,t = √(2*1.25/10)
= 0.5 seconds
Sub-question 2: The time it takes for the sound to reach Frici can be calculated using the formula:
t = d/s where d is the distance
30 meters + 300 meters = 330 meters
and s is the speed of sound (330 m/s).
So, t = 330/330
= 1 second
Sub-question 3: Frici's reaction time is 0.1 seconds and he runs at a speed of 6.6 m/s, so the time it takes for him to reach his plate can be calculated using the formula:
t = d/s
where
d is the distance (30 meters) and s is his running speed (6.6 m/s).
So,
t = 30/6.6
= 4.55 seconds
Therefore, the total time it takes for Frici to arrive at his plate is: 0.11 seconds (time for treat to fall) + 1 second (time for sound to reach Frici) + 4.55 seconds (time for Frici to run back) = 5.66 seconds
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Using the density- temperature graph, compare the behaviour of water density and the density of any other liquid as the temperation increases
What happens to Compton after
he jumps from the plane?
Answer:
In January 2012, Compton suffered a heart attack. On 25 February 2012, he died at one of his daughters' home in Washington. His wife Donna preceded him in death in 1994. Buck Compton was survived by two daughters and four grandchildren.
Explanation:
In January 2012, Compton suffered a heart attack. On 25 February 2012, he died at one of his daughters' home in Washington. His wife Donna preceded him in death in 1994. Buck Compton was survived by two daughters and four grandchildren.
Question:
(a) What is the electric field strength due to a point charge of 2.4 at a position 8.6 cm away from the charge?
(b) What is the magnitude of the electric force on a charge of −3.4 that is 8.6 cm away from the point charge in part a?
(c) Draw a sketch of the two charges, from parts a and b, and indicate the direction of the electric force on the second charge due to the original point charge.
(a) The electric field strength (E), due to a point charge is a measure of how much force an object would experience per unit of charge if it were placed in the field.
To calculate it, you need the charge of the point, the distance from the point charge, and a constant called Coulomb constant (k). The formula is E = k * q / r^2, where q is the charge, r is the distance and k is Coulomb constant. In this case, the charge is 2.4 Coulombs and the distance is 8.6 cm, when you calculate this you get E = 2.3*10^8 N/C.
So the electric field strength at a point 8.6 cm away from a point charge of 2.4 C is 2.3*10^8 N/C.
(b) The magnitude of the electric force on a charge of -3.4 microcoulombs that is 8.6 cm away from a point charge of 2.4 microcoulombs can be calculated using Coulombs law:
F = k * (q1*q2)/r^2
where k is Coulombs constant, q1 is 2.4 microcoulombs, q2 is -3.4 microcoulombs, and r is 8.6 cm.
The force magnitude is approximately equal to 1.97 * 10^-5 N.
Note that the direction of the force will be repulsive as the charges are opposite in sign.
(c) I won't draw a sketch for you, but to draw a sketch of two charges yourself:
You can draw a small circle for each charge, with the size of the circle representing the magnitude of the charge. Label the first charge with a + sign to indicate it's positive and the second charge with a - sign to indicate it's negative. Draw an arrow from the second charge towards the first charge to indicate the direction of the electric force, it should be pointing from the negative charge to the positive charge because the force is attractive.
I hope this helps some, I'm sorry I cannot answer completely.
A potter’s wheel moves from rest to an angular speed of 0.20 rev/s in 32.4 s.
Assuming constant angular acceleration,
what is its angular acceleration in rad/s2?
Answer in units of rad/s^2
A potter’s wheel moves from rest to an angular speed of the angular acceleration is 0.006 rad/s^2.
What is acceleration ?
Acceleration is the rate of change of velocity over time. It is the rate at which an object's speed, or the magnitude of its velocity, changes over time. Acceleration can be positive, negative, or zero depending on the direction of the velocity. For example, if an object is moving in a straight line and its speed increases,
it is said to have a positive acceleration; if its speed decreases, it has a negative acceleration. If the object's speed does not change, then the object is said to have a zero acceleration. Acceleration is a vector quantity, meaning it has both magnitude and direction.
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Two very light1
neutral metal spheres (A and B) hanging from insulating string are at rest
touching each other. An insulated, positively charged rod is brought in contact with A (on the side
opposite from B) and then removed. (Assume the spheres do not move because of the normal force
between the rod and sphere, nor do the spheres move before the rod touches A.) How do the spheres
move? Explain.
Answer:
The spheres do not move.
Explanation:
Both spheres start neutral, meaning they have an equal number of positive and negative words.
The spheres are metal, so they are conductors. When the positively-charged rod touches sphere A, the negative charges in both spheres are attracted towards the rod, and the positive charges in both spheres are repelled away.
When the rod is removed, sphere A will have a negative charge, and sphere B will have a positive charge. The electrostatic force will pull the spheres together. Since they are already touching, the spheres will not move.
A fish tank is 20 inches by 12 inches by 12 inches. What is its volume in m * m ^ 3
As the fish tank is 20 inches by 12 inches by 12 inches, its volume is 47194744.32 mm³.
What is volume?The space that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.
1 inch = 0.0254 meters.
20 inches = 20 × 0.0254 meters = 0.508 meters = 508 mm.
12 inches = 12 × 0.0254 meters = 0.3048 meters = 304.8 mm.
Hence, The volume of the fish tank = length × width × height
= 508 mm × 304.8 mm × 304.8 mm.
= 47194744.32 mm³
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Reginald Esuke from Cameroon ran down a mountain slope in just 62.25 min. How much work was done if the power developed during Esuke’s descent was 585.0 W?
The amount of work which was done if the power developed during Esuke’s descent was 585.0 W is equal to 2,184,975 Joules.
What is work done?The work done (W) by an object can be calculated by multiplying the force acting on it by the perpendicular distance covered by the physical object over a specific period of time. This ultimately implies that, work done (W) and energy (E) have the same unit i.e Joules (J).
Mathematically, the work done (W) by an object can be calculated by using the following formula:
Work done = power × time
Additionally, we would convert the unit of time in minutes to seconds by multiplying by 60 seconds.
Substituting the given parameters into the work done (W) formula, we have the following;
Work done = 585.0 × 62.25 × 60
Work done = 2,184,975 Joules.
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At its closest distance from Earth, the moon experiences a gravitational force of 2.22 E 20 N. The mass of the Earth is 5.97 E24 kg. The mass of the moon is 7.35 E22 kg. What is the distance between the Earth and the moon at that point if G = 6.67 E−11 N*m2/kg2?
A. 1.32 E 4 km
B. 3.63 E 6 km
C. 3.63 E 8 km
D. 1.32 E 17 km
Answer:
Explanation:
Answer: B. 3.63 E 6 km
The equation for gravitational force is F = G*m1*m2/r2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them. We can rearrange the equation to solve for r: r = (G*m1*m2/F)1/2.
Using the given values, we can calculate the distance between the Earth and the moon at the closest point: r = (6.67 E−11 N*m2/kg2 * 5.97 E24 kg * 7.35 E22 kg / 2.22 E 20 N)1/2 = 3.63 E 6 km.
Therefore, the answer is B. 3.63 E 6 km.
2. A football of mass 2.5kg is lifted up to the top of a cliff that is 180 m high. How much potential energydoes the foot ball gain?
Answer: 4.41 kN
Explanation:
Potential energy formula = mass x acceleration due to gravity x height
= 2.5 x 180 x. 9.8 = 4410 N or 4.41 kN
Hannah sees a caterpillar on the leaves of the plants.what components of the ecosystem is a caterpillar
Answer:
Biotic
Explanation:
In a particular ecosystem, caterpillar and parts of the soil are biotic components
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two harmonic waves are described by y1= (4m) sin (8/mx-300/s t) y2=(4m) sin (8/mx-300/s t-2) what is the wavelength of the resultant wave ?
The combined wave has a wavelength of 0.785 meters, which is the same as the combined wavelength of the two component waves. Duration is the interval between a wave's summit or valley and the succeeding wave.
What is a wave length?The distance between two successive peaks or troughs of a wave is measured in terms of its wavelength. It is often measured in meters, centimeters, or nanometers and is the inverse of frequency. The length of a wave is the distance it travels before repeating its pattern.
⇒ y₁ = ( 4 m)sin ( (8x/m) - (300t/s) )
⇒ y₂ = ( 4 m)sin ( (8x/m) - (300t/s) - 2 )
⇒ 0.785 m
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Burning fossil fuels generates heat energy but also emits air pollution and generates greenhouse gases such as CO2 and N2O. The combustion of gigatons of fossil fuels over the last century has lead to the emission of so much greenhouse gas that we have changed the chemical composition of Earth's atmosphere. This chemical change in the atmosphere has enhanced the greenhouse effect leading to global warming and climate change today.
Over 90% of the warming that has occurred on Earth in the last 60 years has occurred in the world's oceans. Most of the excess heat energy acquired by the oceans remains in the uppermost 700 m near the surface of the water, but almost 30% of the heat energy has conducted into the ocean depths. Measurements indicate that in the last 60 years of global warming the oceans have acquired an extra 228*1021J of heat energy.
The ocean covers approximately 71% of Earth's surface, an area of 361*106 km2 and has an average depth of the ocean is 3.682 km. The density of sea water is 1023.6 kg/m3 , the specific heat of sea water is approximately 3850 J/(kgK) ,and the coefficient of volume expansion can be taken to be .21*10-3 C-1.
a) What is the temperature increase of ocean water on average over the last 60 years.
b) Find the volumetric expansion of the ocean as a result of this temperature increase.
c) If the area of the ocean is considered constant by how much has the average height of the ocean surface increased due to this heat influx?
The temperature increase over the last 60 years is 4.35 * 10¹⁰ K, the volumetric expansion over this temperature increase is 1.24 * 10¹⁶ km³ and the height of the ocean is increased by 3.44*10¹⁰ km
What is Heat TransferHeat transfer refers to the movement of thermal energy from a high-temperature body to a low-temperature body. There are three main types of heat transfer: conduction, convection, and radiation.
a) To find the temperature increase of ocean water on average over the last 60 years, we can use the formula for heat energy:
q = mcΔT
Where:
q = heat energy acquired by the oceans (228*1021J)
m = mass of the ocean water (density x volume)
c = specific heat of sea water (approximately 3850 J/(kg K))
ΔT = change in temperature
Given that the area of the ocean is 361106 km² and the average depth of the ocean is 3.682 km, the volume of the ocean can be calculated as:
V = A x D = 361106 km² x 3.682 km = 1.329*10⁶ km³
Given that the density of sea water is 1023.6 kg/m³, the mass of the ocean water can be calculated as:
m = V x ρ = 1.329 * 10⁶ km³ x 1023.6 kg/m³ = 1.36 * 10⁹ kg
Now, we can substitute these values into the equation for heat energy to find the change in temperature:
q = mcΔT
ΔT = q / (m x c)
Substituting the values we get:
ΔT = (228*10²¹J) / (1.36 *10⁹ kg x 3850 J/(kg K)) = 4.35 * 10¹⁰ K
Therefore, the temperature increase of ocean water on average over the last 60 years is 4.35 * 10¹⁰ K.
b) To find the volumetric expansion of the ocean as a result of this temperature increase, we can use the formula for volume expansion due to temperature change:
ΔV = βVΔT
Where:
ΔV = change in volume
V = initial volume of the ocean
β = coefficient of volume expansion
ΔT = change in temperature
Given that the coefficient of volume expansion can be taken to be 0.21*10⁻³ C⁻¹, we can substitute the values we have into the equation:
ΔV = 0.21*10⁻³ C⁻¹ * 1.36*10⁹ km³ * 4.35 * 10¹⁰ K = 1.24 *10¹⁶ km³
Therefore, the volumetric expansion of the ocean as a result of this temperature increase is 1.24 * 10¹⁶ km³
c) If the area of the ocean is considered constant, we can use the volumetric expansion to find the change in height of the ocean surface. The change in height can be calculated by:
ΔH = ΔV / A
Where:
ΔH = change in height
ΔV = change in volume
A = area of the ocean
Substituting the values we get:
ΔH = (1.24 * 10¹⁶ km³) / (361106 km2) = 3.44 *10¹⁰ km
Therefore, the average height of the ocean surface has increased by 3.44*10¹⁰ km due to this heat influx.
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Who was the first person to discover and name gas laws 
Answer:
Charles law and Boyle's law, Dalton law of partial pressure, Graham law of diffusion of gases.
Explanation:
let's hangout sometime
Two forces that are F1 =15N (east) and F2 = 7N (west) act on a body in a frictionless floor. The displacement of the body is 6 m, what is the work done by forces on the body?
Answer:
The net force acting on the body is F1 - F2 = 15 N - 7 N = 8 N (east). Since the displacement of the body is 6 m in the same direction as the net force, the work done by the forces on the body is W = Fnet x d = 8 N x 6 m = 48 J (Joules).
Explanation:
above
Erosion includes what processes?
A) building up sediment to make new rocks
B) cleaning rocks to make them shiner
C) wearing away and removal of surface materials
D) combing earth materials to form new minerals
What is the impedance of a parallel circuit with an inductive reactance of 50 ohms, a capacitive reactance of 30
ohms, and a resistance of 100 ohms?
4
Select one:
O a. 200
O b. 300
c. 600
O d. 900
The impedance of the circuit is 200 ohms. Option A
What is the impedance?We know that the resistor would have to be that element that we find in the circuit which can be able to offer opposition to the flow of current in the circuit. It is also possible that the other components of the circuit could be able to offer an opposition to the flow of current and this is what we call the impedance of the circuit that is under consideration.
Then we have that;
Z = 1/√(1/R)^2 + (1/XL - 1/XC)^2
Z = impedance
R = the resistance
XC = capacitive reactance
XL = Inductive reactance
Where;
R = 100 ohms
XL = 50 ohms
XC = 30 ohms
Then;
Z = 1/√(1/100)^2 + (1/50 - 1/30)^2
Z = 1/√(0.0001) + (0.02 - 0.03)^2
Z =200 Ohms
The impedance has been obtained above.
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A student wants to lift design a wheel and axle to lift a 400 N bucket of water from the bottom of a well. She already has a wheel with a 50 cm radius, and she is able to steadily apply an 80 N force. What should the radius of the axle be so that she can lift the bucket with this simple machine?
0.4 cm
64000 cm
10 cm
16000 cm
The radius of the axle is 10 cm. Option C is the answer.
Solving for the radius of the axle:The mechanical advantage of a wheel and axle is equal to the ratio of the radius of the wheel to the radius of the axle.
To lift a 400 N bucket of water with an applied force of 80 N, the mechanical advantage needed:
M.a = Weight
force applied
W = 400 N
F = 80 N
M.a = 400 N / 80 N
M.a = 5.
To get a mechanical advantage of 5, the radius of the axle should be 1/5th the radius of the wheel,
i.e r = 50 cm / 5
r = 10 cm.
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Which of the following correctly displays the four fundamental forces in terms of increasing magnitude?
A. Electromagnetic force, gravity, weak nuclear force, strong nuclear force
B. Gravity, electromagnetic force, strong nuclear force, weak nuclear force
C. Weak nuclear force, gravity, strong nuclear force, electromagnetic force
D. Gravity, weak nuclear force, electromagnetic force, strong nuclear force
D. Gravity, weak nuclear force, electromagnetic force, strong nuclear force
The four fundamental forces in the universe, in order of increasing magnitude, are:
Gravity: This is the weakest of the four fundamental forces. It is the force that holds everything together and is responsible for the attraction between masses.
Weak Nuclear Force: This force is responsible for certain types of radioactive decay and the fusion of nuclei in stars. It is about 10^25 times weaker than the strong nuclear force.
Electromagnetic Force: This force is responsible for electric and magnetic interactions, such as the forces between charges, the forces between magnets, and the forces between electric currents.
Strong Nuclear Force: This is the strongest of the four fundamental forces. It holds the protons and neutrons in an atom's nucleus together, and it is about 10^38 times stronger than the electromagnetic force.
Therefore, the correct order of the four fundamental forces in terms of increasing magnitude is D: Gravity, weak nuclear force, electromagnetic force, strong nuclear force
In the human femur, bone tissue is strongest in resisting compressive force,
approximately half as strong in resisting tensile force, and only about one-
fifth
as strong in resisting shear force. If a tensile force of 8000 N is sufficient to
produce a fracture, how much compressive force will produce a fracture?
How much shear force will produce a fracture
The compressive force that would be enough to produce a fracture is 4000 N.
What is the force?We know that the femur is one of the most important bones that we have in the human body. In this case, we have been told that In the human femur, bone tissue is strongest in resisting compressive force, approximately half as strong in resisting tensile force, and only about one- fifth as strong in resisting shear force.
Then we know that;
Tensile force = 8000
The compressive force would be half of this magnitude as such;
Compressive force = 4000 N
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The figure shows blocks with different masses hanging from a spring or combination of two
springs. All the springs are ideal and have spring constants of k. Which of the following
correctly ranks the systems in order of most stored elastic potential energy to least stored
Without the figure, it's difficult to determine the correct ranking of the systems in order of most stored elastic potential energy to least stored. The ranking would depend on the specific masses of the blocks and the displacement of the spring(s) in each system. The spring constant (k) is the same in all systems, so it does not affect the ranking.
In general, the system with the greatest stored elastic potential energy will be the one in which the spring(s) is most stretched or compressed. The more the spring(s) is stretched or compressed, the more potential energy it has stored. The mass of the block will also affect the amount of stored energy, as a heavier block will stretch or compress the spring(s) more than a lighter block.
Without the exact information about the masses and the displacement of the springs, It's not possible to determine the ranking of the systems.
what are some factors that are involved when an object re-enters earth's atmosphere? (ex. red bull free fall)
Answer:
Explanation:
1. Heat: Re-entry into Earth’s atmosphere generates a huge amount of heat due to friction between the object and the atmosphere. This is especially true for objects traveling at high speeds, like a spacecraft. The heat generated from re-entry can cause the object to break apart due to the extreme temperatures.
2. Air Resistance: Re-entry into Earth’s atmosphere also generates a great deal of air resistance. This air resistance can cause the object to slow down or even change direction. This can be dangerous if the object is traveling too fast or if the air resistance is too great.
3. Drag Force: Drag force is the force generated by the air molecules around the object. This force is responsible for slowing down the object as it re-enters the atmosphere. The amount of drag force depends on the size and shape of the object, as well as the speed and direction of the object.
4. Angle of Attack: The angle of attack is important in determining how an object enters the atmosphere. If the angle of attack is too high, the object can be destroyed due to the extreme heat and air resistance. If the angle of attack is too low, the object can skip off the atmosphere and continue in its original trajectory.
5. Ablative Heat Shield: Ablative heat shields are commonly used to protect objects from the extreme heat and air resistance encountered during re-entry. These shields are made of specialized materials that can withstand the extreme temperatures and ablate (or burn away) as the object re-enters the atmosphere.
Match the correct numbers and letters together please.
A wave in physics is a moving disturbance in the energy level of a field.
A transmitter is an electronic device that generates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech, music, TV or other sources, and broadcasts the resulting signal from an antenna.
The antenna is an apparatus to receive or transmit electromagnetic waves and convert respectively to or from an electrical signal.
Receiver is one of the several electronic devices that receive electromagnetic waves, or signals transmitted as such.
Therefore, the correct description of a transmitter, a receiver and an antenna is given above.
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