Is this a photo of a spiral galaxy or an elliptical galaxy, and how do you know?.
Answers
Elliptical galaxies lack structure and have a rounded ellipsoidal form, which gives them the appearance of a huge spherical or elliptical ball of stars. It is possible to categories elliptical galaxies according on how long and narrow they seem.
Based on how tightly curled the spiral arms appear, spiral and barred spiral galaxies are divided into subclasses. With yellowish bulges in the middle, spiral galaxies look as flat, blue-white discs of stars, gas, and dust. The two categories of these galaxies are regular spirals and barred spirals. In barred spirals, the central bulge is traversed by the starry bar.Galaxies were first categorized by Edwin Hubble into four categories: spirals, barred spirals, ellipticals, and irregulars. He further divided spiral and barred spiral galaxies based on their size.
The question is incomplete, the complete question is:
s this a photo of a spiral galaxy or an elliptical galaxy, and how do you know?.
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Related Questions
6. suppose a certain musical instrument consists of a pipe which is open at one end and closed at the other. music is produced as sound waves move through the pipe, creating standing wave patterns. the pipe has a length of 80 cm. q1) find the wavelength of the first, third, and fifth harmonics (show your work).
Answers
The wavelength of the first third and fifth harmonics is ∝ = 64cm.
Solution:
[tex]\frac{\pi }{4} = 80cm , \pi = 320cm[/tex]
[tex]\pi = 80 cm\\[/tex] [tex]\pi = 106.67cm[/tex]
[tex]\frac{5\pi }{4}=80cm[/tex]
[tex]\pi = 64cm[/tex]
The bottom opening of closed-ended tubular piles is covered with a steel plate or a conical tip. A steel plate or conical tip is welded into the opening. These covers are often called end caps. In contrast, open-ended tubular piles do not have end caps.
When a sound wave is transmitted through an open pipe and reflected from the Earth. The incident and reflected waves then have the same frequency and propagate in opposite directions, forming a superimposed standing wave. An open-ended instrument has both ends open to the air. An example would be a trumpet-like instrument.
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A boy pushes on a heavy box, but it does not move. What force is resisting the boy's push?.
Answers
The force resisting the boy's push is static friction.
Forces are not always great enough to move objects. For example, a small force applied may not be able to move a heavy box. The frictional force resisting the movement of the box is the same as the applied force but in the opposite direction. This frictional force is called static friction.
As the applied force gradually increases the frictional force opposes the applied force. If the applied force is greater than the maximum static frictional force, the frictional force also increases. The applied force is the force exerted on an object by a person or other object. When a person pushes a desk across the room, a force acts on the object.
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hook up a light bulb to a 5- vv battery. right-click (or control-click) on the light bulb, and change its resistance. how does the brightness of the light bulb depend on its resistance?
Answers
The brightness of the light bulb depends on its resistance is OptionC. The light bulb gets dimmer as the resistance is increased.
An electric present-day flows when electrons move through a conductor, along with a metal cord. The shifting electrons can collide with the ions inside the metallic. This makes it greater hard for the current to glide, and reasons resistance.
Increasing the temperature (typically) increases resistance. The temperature coefficient of resistance (TCR) of wire or a resistor relates the alternate in resistance to the alternate in temperature.
Opposite of open resistance to authority or competition. obedience. submission. acquiescence. compliance.The resistance of a conductor, or circuit detail, generally will increase with growing temperature. while cooled to extraordinarily low temperatures, a few conductors have 0 resistance. Currents keep to flow in these substances, known as superconductors, after elimination of the carried out electromotive pressure.
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Disclaimer:- your question is incomplete, please see below for the complete question.
a) The brightness of the light bulb is independent of its resistance. It only depends on the voltage of the battery.
b) The light bulb gets brighter as the resistance is increased.
c) The light bulb gets dimmer as the resistance is increased.
a sound power level reading of 127 db was taken near a construction site where chippers were being used. when all but one of the chippers stopped working, the sound power level reading was 120 db. estimate the number of chippers in operation when the reading of 127 was obtained.
Answers
2 chippers are used in operation when the reading of 127 was obtained.
We have following information,
Sound power level reading = 127db
the sound power level reading when one chippers stopped working = 120db
let L₁ = 127db , L₂ = 120db
change in sound level ( ∆L ) = 127 - 120 = 7db
Using the sound level formula ,
change in sound level = ∆L
= L₁ - L₂= 10 log L₁ - 10 log L₂ = 7
=> 10 log ( L₁ /L₂ ) = 7 ( from logarithm formula)
=> log ( L₁/L₂ ) = 7/10 = 0.7
=> L₁ /L₂ = e^0.7 = 2.01
So, there are 2 chippers initially.
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A 535 kg roller coaster car began at rest at the top of a 93.0 m hill. now it is at the top of the first loop-de-loop. an illustration of a roller coaster track with the first hill labeled 93.0 m high and it goes down to a vertical loop with the car at the top. the loop is labeled as 62.0 m high. this roller coaster’s track is nearly frictionless, so resistance can be ignored. using g = 9.8 m/s2, what best describes the roller coaster car when it is at the top of the loop-de-loop? the car has only potential energy, so it is moving at 0 m/s. the car has both potential and kinetic energy, and it is moving at 24.6 m/s. the car has both potential and kinetic energy, and it is moving at 34.9 m/s. the car’s potential energy has all been converted to kinetic energy, so it moves at 42.7 m/s.
Answers
Using g = 9.8 m/s2, the statement that best describes the roller coaster car when it is at the top of the loop-de-loop is that The car has both potential and kinetic energy, and it is moving at 24.6 m/s. The correct answer is B) The car has both potential and kinetic energy, and it is moving at 24.6 m/s.
Potential energy is the energy that is stored in any object or system as a result of its position or component arrangement. The environment outside of the object or system, such as air or height, has no impact on it. In contrast, kinetic energy refers to the energy of moving particles inside a system or an item.
The energy an individual or an object has as a result of motion in this case, the motion of the falling apple is known as kinetic energy. Potential energy, which exists in a bike that is parked on top of a hill, is converted to kinetic energy when you start riding it downhill. These two energies are both expressed as joules.
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Answer: B (The car has both potential and kinetic energy, and it is moving at 24.6 m/s.)
Explanation:
when the pavement is dry, a car with a mass of 950 kg can drive as fast as 70 km/h on a curve without skidding. when it rains, the coefficient of static friction is 2/3 of the coefficient of static friction under dry conditions. how fast can a 1,100 kg car drive on the same curve while raining?
Answers
The velocity of a 1,100 kg car driving on the same curve while raining is 65.05 km/h.
The velocity depends on the kinetic energy of the car. Kinetic energy is the energy from a moving object. It can be determined as
KE = 1/2 . m . v²
where KE is kinetic energy, m is mass and v is speed.
From the question above, we know that
m₁ = 950 kg
v₁ = 70 km/h
m₂ = 1100 kg
In the same kinetic energy, the second car should move with velocity
KE₁ = KE2
1/2 . m₁ . v₁² = 1/2 . m₂ . v₂²
950 . 70² = 1100 . v₂²
v₂² = 4231.82
v₂ = 65.05 km/h
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Individual cloud layers in the giant planets have different compositions because?.
Answers
Ammonia crystals that have been frozen make up the majority of Jupiter and Saturn's clouds. Methane makes up the clouds on Uranus and Neptune. The composition of the clouds is determined by these worlds' temperatures.
With 75% of their mass made up of hydrogen and 25% of it made up of helium, Jupiter and Saturn, the two largest planets, share virtually the same chemical composition as the Sun. Jupiter and Saturn are commonly referred to as gas planets because hydrogen and helium are both gases on Earth.At any given altitude, Saturn's atmosphere is colder than Jupiter's, hence the different cloud layers are located further into Saturn's atmosphere. However, methane cannot condense in the warmer troposphere, only in the extremely cold upper troposphere of Uranus and Neptune.
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How are the pieces of hard candy like pieces of rock (sediment)? how are they different?.
Answers
Sedimentary rocks are formed when sediments are compacted and cemented together. Similarly, when magma cools it hardens into igneous rock.
I was able to sculpt a model out of the sedimentary rock by applying pressure to the candy with a book. This is similar to sedimentary rock formations in nature. After the rock fragments pile up in layers the pressure causes the sediment to become sedimentary rock.
Great Plains rock is sedimentary Rocky Mountain rock is igneous. They were formed differently and need not be formed together. The Great Plains and the Rocky Mountains are similar in this respect. Both lie on the same tectonic plate known as the North American plate.
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at its peak, a tornado carries 540 km/h winds at a point where the diameter of the tornado is 59 m. (a) what is its angular velocity?
Answers
At its peak, a tornado carries 540 km/h winds at a point where the diameter of the tornado is 59 m, angular velocity is 0.737 rev/s.
What is Angular Velocity?
You must comprehend rotation in order to comprehend angular velocity. Let's use a windmill as an example to assist you comprehend. A windmill is a stiff object that revolves around a certain axis. The blades of a windmill spin about an axis that passes through the rotor while the windmill is in rotational motion. Angular velocity is the speed that rigid things display as they rotate around a fixed axis.The vector representation of rotation rate, or how quickly an item rotates or revolves in relation to another point, is called angular velocity.The temporal rate at which an item rotates or circles around an axis is known as its angular velocity.However, The Greek symbol omega is used to signify angular velocity.
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Two bowling balls, each with a mass of 8. 52 kg, are traveling toward each other. What is the total momentum of the system if both balls have a speed of 2. 13 m/s, but are traveling opposite of one another?.
Answers
The net momentum of two balls is 18.1476 kgm/s.
Take into account the impact of two objects, object 1 and object 2. The forces involved in such a collision are equal in strength and directed in the opposite direction.It follows that the impulses that the two objects experience are also equal in magnitude and opposite in direction because the forces between the two objects are opposite in direction and have equal magnitudes as well as equal times for action.[tex]mv=-MV\\\\\\mv+MV=0\\m=M\\so\\m(v+V)=net-momentum\\[/tex]8.52 (2.13)=18.1476 kgm/s
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what is the spectroscope doing to the light from the sun or other light source?2. what do the different bands of light represent?3. why doesn't every light have all the same bands of light?4. where in nature do you see this effect occuring?5. how might separating out bands of light be useful
Answers
1. A spectrograph.
2. A Colors.
3. Cause of various properties.
4. Rainbow.
5. Dispersion.
Further Information
1. A spectrograph, also known as a spectroscope or spectrometer, separates the light from a single substance into its component colors, similar to how a prism separates white light into a rainbow. This spectrum is recorded, allowing scientists to evaluate the light and determine the qualities of the material with which it interacts.
2. A Colors - Distinct wavelengths of light appear as different colors to human sight. Longer wavelengths appear red, whereas shorter wavelengths seem blue or violet. The animation on the right depicts a wave as a schematic design.
3. Cause of various properties. Different light sources have distinct spectra due to their unique features, such as composition and temperature. Because fluorescent light is composed of a unique blend of hues, it differs slightly in appearance from sunlight.
4. Rainbow - A rainbow is a natural illustration of a spectrum. Optics-studying scientists initially employed the term spectrum. They used the term to describe the spectrum of colors produced by a prism on visible light. The spectrum observed when light passes through a prism is an illustration of light dispersion.
5. Dispersion - The distinct hues correspond to different wavelengths of light and are refracted to varying degrees. This separation of hues is referred to as dispersion. Once sunlight's hues are separated through refraction, we are able to recognize them in the rainbow's grandeur.
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using vocabulary such as meridian, zenith, etc., describe the relationship of a star's altitude above the horizon and the observer's latitude. if you are positioned at the earth's equator, and a given star is at your zenith, what happens to that star's position (relative to you, the observer) as you walk in a straight line to the north pole? why are some stars and constellations only seen during certain seasons?
Answers
Earth has coordinates like altitude and azimuth, horizon, and zenith/nadir. Zenith is directly above you 90 degrees from the horizon. Nadir is directly below your feet.
Declination actually has a relation to latitude, as well as being measured in the same units. If you are at the north pole, the north celestial pole would be at your zenith. If you are at the earth's equator, the celestial equator will be at your zenith, at least the part that is culminating on the meridian.
The meridian is where an object moving from east to west reaches its highest point above the horizon, regardless of whether it can reach the zenith or not. When on the meridian, a star with the same declination as your latitude with being at the zenith.
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(03.03 mc)when two mechanical waves have a displacement in opposite directions, and they overlap, what will the resulting wave look like and why?
Answers
When two mechanical waves have a displacement in opposite directions, and they overlap a destructive interference take place
When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference
When two waves have a displacement in opposite directions, and they overlap , a destructive interference take place . In this case , amplitude of net wave will be altered due to overlapping .
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two asteroids are 75000 m apart one has a mass of 8 x 10^7 kg if the force of gravity between them is 1.14 what is the mass of the asteroid
3.4 x 10^11 kg
8.3 x 10 ^12 kg
1.2 x 10 ^12 kg
1.2 x 10^10 kg
Answers
Answer:
1.2×10¹² kg
Explanation:
from
[tex]f = \frac{gm1m2 }{r {}^{2} } [/tex]
[tex]m2 = \frac{fr {}^{2} }{gm1} [/tex]
[tex]m2 = \frac{1.14 \times (75000 { )}^{2} }{6.67 \times {10}^{ - 11} \times 8 \times {10}^{7} } [/tex]
HENCE M2= 1.2×10¹²kg
i need help with these questions. please help me.
Answers
(1) The moment of force for the Question (1) is 12 Nm.
(2) The moment of force for the Question (2) is 4.5 Nm.
(3) The length of the lever for the question (3) is 4 m.
What is moment of force?
The moment of force is the product of force and perpendicular distance though which the force is applied.
M = Fd
where;
F is the applied forced is the perpendicular distanceThe moment of force for the first question is calculated as;
M = 6 N x 2 m
M = 12 Nm
The moment of force for the second question is calculated as;
M = 1.5 m x 3 N
M = 4.5 Nm
The length of the lever for the third question is calculated as follows;
M = Fd
given;
Moment of force, M = 8 NmApplied force, F = 2 Nperpendicular distance = length of the lever, d = ?d = M/F
d = 8 Nm / 2 N
d = 4 m
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a tennis ball cannon projects a ball vertically upward with an initial speed of 60 m/s. assuming negligible air resistance, with what speed will the ball be moving after 2.0 seconds.
Answers
Answer:
40.4 m/s
Explanation:
v = v o - at
= 60 - 9.81 (2) = 40.4 m/s
a 2.00 kg steel gas can holds 10.0 l of gasoline when full. what is the average density (in kg/m3) of the full gas can, taking into account the volume occupied by steel as well as by gasoline?
Answers
The average density of the full gas can is 0.2 kg/m³
Density is the substance's mass consistent with the unit of quantity. The symbol most customarily used for density is ρ, despite the fact that the Latin letter D can also be used. Density is the size of ways tightly a cloth is packed together. it's far defined as the mass consistent with unit quantity.
ρ = m/V, wherein ρ is the density, m is the mass of the item and V is the quantity of the object.
calculation:-
mass = 2 kg
volume = 10 L
density = mass/volume
= 2/10
= 0.2 kg/L
The density is of two types, one is absolute density, and the alternative is relative density. Relative density is also called unique gravity, which is the ratio of the density of a material to the density of a reference material. typically, the reference fabric is water.
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em produces 61,256 watts, what is the energy worth per day? assume electricity costs of $0.06 per kw
Answers
Simply multiplying the appliance's wattage by the number of hours it is used each day will accomplish this.
You must divide this figure by 1,000 since you require kilowatt- hours and this gives you watt-hours (a kilowatt equals 1,000 watts). The Energy Information Agency (EIA) estimates that the typical American home uses 10,715 kilowatt-hours (kWh) of energy annually. It takes 29,360 watts (W) per day to power a home for a day, which can be divided by 24 to get an average of 1,223 W. According to data from industry watchdog Ofgem from January 2022, the typical dual fuel variable tariff cost £1,277 per year, or £106.41 per month.
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The armature of a 4-pole series dc generator has 40 slots, with 10 conductors per slot. There are 4 parallel paths in the armature winding. Every pole of the stator produces a flux of 0. 02 wb. Internal resistance of the generator is 5 ω. The generator is coupled to an internal combustion gasoline engine that provides an input torque of 10 n. M. And runs the generator at a speed of 1200 rpm. The electrical load connected to the generator draws a current of 10 a. A. What is the voltage available at the generator terminals? b. How much power is drawn by the load? c. What is the generator efficiency?.
Answers
The generator efficiency is 60.19%
What is generator efficacy?
The efficiency of the generator and overall efficiency A generator is a device that converts mechanical energy to electrical energy. The generator efficiency, the ratio of electrical power output to mechanical power input, characterizes a generator's performance. However, no electric motor is actually 100 percent efficient. Heat, noise, and the creation of products like carbon dioxide all result in energy loss. A generator is 70% efficient if it produces 700 watts out of a 1000 watt generator.
Efficiency = (Pout/Pin)x100%
= (756/1256)x100%
=60.19%
hence, the efficacy of the generator is 60.19%.
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a 2.5-kg brick falls to the ground from a 3-m-high roof. what is the approximate kinetic energy of the brick just before it touches the ground? * 1 point a) 75 j b) 38 j c) 12 j d) 11 j
Answers
The approximate kinetic energy of the brick just before it touches the ground is 75J. Option A.
Solution:
Mass of brick = m = 2.5 kg
Height of roof = 3 m
Let v be the final velocity of the brick just before hitting the ground.
The kinetic energy of an object is given by KE = [tex]\frac{1}{2} *M *V^{2}[/tex]
v must be calculated before calculating KE.
You can calculate the required variables using the formula where u is the initial velocity, v is the final velocity, a is the acceleration, and s is the distance traveled.
Where s = roof height, u = 0 because the brick falls instead of being thrown, so a = gravitational acceleration = g = 9.8.[tex]\frac{M}{S^{2} }[/tex]
So[tex]V^{2}[/tex] = 0+2x9.8x3 = 58.8
So v = [tex]\sqrt{58.8}[/tex] = 7.66m/s
Now we can calculate the kinetic energy = [tex]\frac{1}{2} *m*v^{2} = \frac{1}{2} *2.5*58.8 = 73.5 kg*\frac{m^{2} }{s^{2} }[/tex]
We also need to convert KE to Joules.
[tex]1kg*\frac{m^{2} }{s^{2} }[/tex] = 1 joule
Therefore kinetic energy = 73.5 joules.
When an object falls from rest its gravitational potential energy is converted into kinetic energy. Energy conservation as a tool allows us to calculate the velocity just before hitting the surface. When an object hits solid ground, all of its kinetic energy is converted into heat and sound energy. When an object falls to the ground in free fall its potential energy decreases, and its kinetic energy increases.
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Which of the following factors would most likely cause a hurricane to decrease in strength?
Moving toward tropical water
Staying over a warm body of water for a long time
Increasing the number of large clouds
Moving over a landmass
Answers
Answer:
moving over a landmass because moving for a long period of time will cause for it to slow down.
The factor that would most likely cause a hurricane to decrease in strength is staying over a warm body of water for a long time. The correct option is B.
What is a hurricane?Because of their larger size, longer duration, and greater variety of ways to damage property, hurricanes cause far more overall destruction than tornadoes.
A hurricane is a tropical storm with winds that have reached 74 miles per hour or higher. A storm's eye is typically 20-30 miles wide and can extend for 400 miles.
These storms weaken and disintegrate as they move over cold water or land and lose contact with the hot water that powers them.
Recent research has found a link between ocean surface temperatures and the intensity of tropical storms. Warmer waters fuel more energetic storms.
Thus, the correct option is B.
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An egg is dropped from a treehouse and takes 1.51.51, point, 5 seconds to reach the ground. We can ignore air resistance.
What is the egg's displacement?
Answers
The egg's displacement is 122.625 m
Here, the case of dropping the egg from the treehouse is comes under freefall condition. Meaning that the motion is under Earth's gravitational acceleration only as we have to ignore air resistance. Here initial velocity is considered to be zero.
Hence, we will use s= 1/2* g*t²
s is displacement to be find out in meter
g is acceleration due to gravity = 9.81 m/s²
t is time taken by the egg to reach the ground which is given as 5 second.
Putting all the values in the given equation
s= 1/2*9.81*5*5
s= 1/2*9.81*25
s= 245.25/2
s= 122.625
So the displacement is 122.625 meter
a 16.0 kg box rests on a table, and a 12.5 kg box is placed on top of it. what is the normal force (in n) that the table exerts on the 16.0 kg box?
Answers
A 16.0 kg box rests on a table, and a 12.5 kg box is placed on top of it. The normal force (in n) that the table exerts on the 16.0 kg box will be 279.3 N
mass = m1 = 16 kg
m2 = 12.5 kg
F1 ( force by the table exerted on the 16 kg box ) = ?
F1 - m1g - m2g = 0
F1 = g ( m1 + m2 )
= 9.8 * ( 16 + 12.5 )
= 279.3 N
A 16.0 kg box rests on a table, and a 12.5 kg box is placed on top of it. The normal force (in n) that the table exerts on the 16.0 kg box will be 279.3 N
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tyrofoam has a density of 300kg/m3300kg/m3. what is the maximum mass that can hang without sinking from a 40.0 cmcm -diameter styrofoam sphere in water?
Answers
If a Styrofoam has a density of 300 kg / m³, the maximum mass that can hang without sinking from a 20.0 cm -diameter Styrofoam sphere in water is 23.45 kg
ρ = m / V
V = 4 / 3 π r³
ρ = Density
m = Mass
V = Volume
r = Radius of sphere
d = 40 cm = 0.4 m
r = d / 2 = 0.4 / 2
r = 0.2 m
V = 4 / 3 * 3.14 * 0.2 * 0.2 * 0.2
V = 0.0335 m³
ρ = 300 kg / m³
m = ρ V
m = 300 * 0.0335
m = 10.05 kg
Similarly for water displaced,
ρ = 1000 kg / m³
m = 1000 * 0.0335
m = 33.5 kg
The maximum mass that the sphere can hold without sinking,
m = 33.5 - 10.05
m = 23.45 kg
Therefore, the maximum mass that the sphere can hold without sinking is 23.45 kg
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You want to store 1,000 j of energy in an ideal spring when it is compressed by only 2. 5 cm. What should be the force constant (spring constant) of this spring?.
Answers
The spring constant of the given spring is equal to 3.2 × 10⁶ N/m.
An equation that represents the spring force is as follows:
F = -kx,
where x is the spring's potential deformation and k is a spring constant. The spring will revert to its previous form or position if the sign is negative.
When a spring is crushed, it stores the following amount of energy:
E = (1/2)kx²
Given that E = 1000J, the energy that the spring stores when it is squeezed.
x = 2.5 cm = 0.025 m is the length by which a spring is compressed.
1000 = (1/2)×k (0.025)(0.025)
k = 3.2 × 10⁶N/m
F = -kx. Spring constant is the name given to the proportional constant k. It represents a stiffness measurement for the spring. A spring produces a force F = -kx in the direction of its equilibrium position when it is stretched or compressed by a distance x from its equilibrium length.
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Are these correct for 6 and 7?
Answers
The velocity to time graph of the robots can be used to calculate the displacement and distance traveled by the robot.
6) The magnitude of the displacement of the robot for the entire time interval shown is (ii) greater in Case B
7) The rank of the distance traveled during the intervals is as follows;
[tex]\begin{vmatrix}D| &A | &C | &B | &E| &F \\\end{vmatrix}[/tex]
What is a velocity time graph?A velocity time graph describes the changes in the motion of a straight moving object
6) The displacement is given by the area under the velocity time graph.
The area is obtained by drawing a vertical line at the tip of the graph of the velocity to time of each of the robots
The area of a triangle = 0.5 × Base length × Height
The time interval in Case A is the same as the time interval in Case B which is taken as t
The time at which the velocity of the robot is 0 in figure (i) is approximately 0.5·t
The initial velocity in Case A = -v
The final velocity = v
The area under the curve in Case A, which gives the displacement is therefore;
Displacement in Case (A) = 0.5 × 0.5·t × (-v) + 0.5 × 0.5·t × (v) = 0
The magnitude of the initial velocity of the robot in Case B is half the magnitude of the final velocity of the robot
Similarly, the time at which the velocity of the robot in Case B is 0 is a third of the total time of motion
The displacement of the robot in Case B is therefore;
Displacement = 0.5 × (1/3)·t × (0.5·v) + 0.5 × (2/3)·t × (-v) = -0.25·v·t
The magnitude of the displacement in Case B = |-0.25·v·t| = 0.25·v·t > 0
The magnitude of the displacement in Case B is > The magnitude of the displacement in Case A
The correct option is therefore (ii) greater in Case B
7) The distance traveled is given by the area bounded by the curve as follows;
A. Shape of region bounded by the graph = Rectangle
Initial velocity = Constant = -1 unit
Time of travel = 5 unit
Area = -1 × 5 = -5 units
B. Shape of graph = Triangle
Initial velocity = 1.5 units
The final velocity = 0
Change in velocity = 1.5 - 0 = 1.5
The time = 5 unit
Area = 0.5 × 5 × 1.5 = 3.75
The distance = 3.75 units
C. Starting velocity = -1.7 units
The final velocity = 0
Change in velocity = -1.7
Time = 5 units
Distance ≈ 0.5 × 5 × -1.7 = -4.25
D. Shape of graph = Rectangle
Initial velocity ≈ 1.7 units (Constant)
Time = 5 units
Distance = 5 × 1.7 = 8.5
E. Shape of graph = Two congruent triangles
Initial velocity = -1 unit
Time it takes to increase to a velocity of 0 = 2.5·t
Final velocity = 1 unit
Time it takes to increase to from a velocity of 0 to a velocity of 1 = 2.5 units
Distance = Sum of the area of the two triangles
Displacement = 0.5 × 2.5 × -1 + 0.5 × 2.5 × 1 = 0
Distance = 0.5 × 2.5 × 1 + 0.5 × 2.5 × 1 = 2.5
F. Shape of area bounded by the graph = Positive triangle
Height of the triangle = 1 unit
Base length of the triangle = 5 units
Area of the triangle = Distance = 0.5 × 5 × 1 = 2.5
The rank of the distance travelled during the intervals is therefore;
D(8.5), A(-5), C(-4.25), B(3.75), E(2.5), F(2.5)
The distance is a measure of the motion of the robot such that the forward and backward motion are added together
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A 5 kg object is lifted to a height of 8 m. How much work is done by the gravitational force?.
Answers
The work done by the gravitational force is -400 J.
Solution:
Work done = 5×8×(-10)
Work done = 40(-10)
Work done = -400J.
Gravity or attraction pulls objects with mass together. We often think about Earth's gravity. This force locks the body to the ground. But all objects with mass exert gravitational force on all other objects with mass.
Gravity is described as the force of attraction that attracts all physical forms with mass. It is by far the weakest known force of nature. The reason gravity pulls you to the ground is that all objects with mass like our Earth actually bend or distort the fabric of the universe called space-time. This curvature is what we perceive as gravity.
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suppose your standing on a train accelerating at 0.20 g. what minimum coefficient of static friction
Answers
The minimum coefficient of static friction between the man and the train accelerating at 0.20g is .020.
The acceleration of the train is 0.20g. g is the acceleration due to gravity.
The man standing in the train will also have the same acceleration as that of the train. So, the acceleration of the man standing in the train is 0.20g.
Let us assume that the mass of the man is M.
So,
in order to keep standing an go with the trains,
Friction force = The force on the man exerted by the train's acceleration.
Friction force = uN
u is the coefficient of static friction,
N is the normal reaction.
The Normal reaction will be equal to the weight of the man.
Weight of the man wil be mg. So,
Friction force = uMg
Th force due to train's acceleration,
F = M(0.2g)
Now,
M(0.2) = uMg
u = 0.2
So, the coefficient of static friction is 0.2.
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a ball is thrown straight up. at what point in the balls movement does the ball have the most energy? ignore air resitance. explain.
Answers
The ball has the most energy when it is at the top of its trajectory.
When is a ball at its most energetic?
The ball's maximum displacement and velocity will be equal at the highest point of the trajectory. It is possible to state that the energy present is equivalent to the entire potential energy.The ball possesses potential energy when it is at its highest point. The ball has kinetic energy as it moves in the direction of the table. At the very end of its descent, when it is travelling the quickest, it possesses the highest kinetic energy.To learn more about energy, follow the link https://brainly.com/question/12044665
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Julian stands on his toes to lift his body high enough to reach a book. In this example, what do Julian's toes function
as?
Answers
According to the given statement In this example Julian's does function as Fulcrum.
What is a fulcrum and a lever?The "arm" of the lever is the handle or bar; it is the portion that you push against or pull towards. The point upon which lever rotates or balances is known as the "fulcrum." Your hand's fingers serve as the fulcrum when using a fork. In reality, scissors are only two levers together.
Is a pulley a fulcrum?The center of a wheel serves as the fulcrum. An outside ring of the wheels simply wraps around, such as the handle of a lever. A pulley is exactly what it sounds like—a axle and wheels with such a groove around the exterior of the wheel to hold a rope. You can accomplish more with a lever than you could on your own.
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