1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blondinia [14]
3 years ago
12

A roller-coaster car rolls down a frictionless track, reaching speed v0 at the bottom. If you want the car to go twice as fast a

t the bottom, by what factor must you increase the height of the track
Physics
1 answer:
NeTakaya3 years ago
3 0

Answer:

h should become four times.

Explanation:

The speed at the bottom depends only on the vertical height difference from the top ... if there is no friction ... then the path you take from top to bottom doesn't matter in any way, only the difference in height between the two

mgh at top = 1/2 mv^2 at bottom, so that v=sqrt[2gh]

You see, the final velocity, v, depends on the square root of h, so double v, quadruple h, or four times higher

You might be interested in
High pressure center of dry air
Virty [35]
Anticyclone is the high pressure center of dry air
5 0
3 years ago
Read 2 more answers
Which object experiences the greatest gravitational force? A)car B)fire truck C)plane D)human
Svetlanka [38]

Answer: C Plane

Explanation: According to Newton's law, gravitational force is proportional to the product of masses and inversely proportional to the square of distance between them.

Gravitational force depends on mass. The bigger the mass, the more the magnitude of the gravitational force. Since plane is assume to have the highest mass in the options, we can therefore conclude that plane will experience the highest gravitational force.

3 0
3 years ago
If we want to describe work, we must have
tresset_1 [31]

The answer is C

Hope that helps!

Good luck :)

8 0
3 years ago
Read 2 more answers
Why is it not possible to achieve a higher resolution in the light microscope?.
Rudiy27

Higher resolution cannot be achieved with a light microscope because wavelength of light is larger that wavelength of electrons.

<h3>What is light microscope?</h3>

Light microscope is defined as the type of microscope that makes use of visible light to magnify objects into images that can be observed.

The wavelength of light is larger than that of the electrons, therefore, higher resolution cannot be achieved with a light microscope.

Learn more about microscope here:

brainly.com/question/15744335

#SPJ1

3 0
1 year ago
How is the earth a cracked hard boiled egg
xz_007 [3.2K]

Answer:

the earth isn't a cracked hard boiled egg, but I'd guess they mean layers. A thin shell/crust and the yolk and whites of the egg represent layers of the earth

Explanation:

6 0
3 years ago
Other questions:
  • Can someone help me?!!!!!
    14·1 answer
  • Balanced forces act on a ball that is being held above the ground in someone's hand. explain why these forces on the ball are ba
    11·1 answer
  • In which electric circuit would the voltmeter read 10 volts ?
    15·1 answer
  • Status
    14·1 answer
  • I need help pleaseeeeeeeeeeeeeeeee
    14·2 answers
  • PLSS HELP WILL GIVE POINTS OR WHATEVER JUST PLS HELP I WILL GIVE 98 POINTS
    10·1 answer
  • A bike and rider of total mass 75.0 kg moving at a velocity of 30 m/s to the right
    7·1 answer
  • the coefficient of kinetic friction between a couch and the floor is 0.65. if the couch has a mass of 42 kg and you push it with
    12·1 answer
  • Can someone please give me the answers to this? ... please ...
    10·1 answer
  • What is the displacement if a person traveled from point B to E?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!