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
Sedaia [141]
3 years ago
15

A car is raised on a lift at a service station (so it has some amount of gravitational potential energy relative to the ground).

If it were raised twice as high, how much gravitational potential energy would it have compared with what it had at the first height?
Physics
1 answer:
kenny6666 [7]3 years ago
8 0

Answer:Twice

Explanation:

It is given that car is raised on a lift with respect to ground.

Suppose car is raised by a height of h m from ground having mass m so gain in Potential Energy by car is

Gain in P.E._1=m\times g\times h

Now if it were raised twice as high,i.e. 2 h height from ground then gain in Gravitational Potential Energy

=m\times g\times 2h

P.E._2=2m\cdot g\cdot h

It is clear that P.E._2=2\cdot P.E._1

Thus in second case gain in Potential Energy is twice as compared to first case

You might be interested in
A sled of mass m is being pulled horizontally by a constant horizontal force of magnitude F. The coefficient of kinetic friction
lorasvet [3.4K]

Answer:

The average velocity of the sled is vavg = s/t.

Explanation:

Hi there!

The average velocity is calculated as the traveled distance over time:

vavg = Δx/Δt

Where:

vavg = average velocity.

Δx = traveled distance.

Δt = elapsed time.

We already know the traveled distance (s) and also know the time it takes the sled to travel that distance (t). Then, the average velocity can be calculated as follows:

vavg = s/t

Have a nice day!

4 0
3 years ago
The Sun does NOT rotate the way Earth does. Which statement best describes the difference in their rotations?
Phantasy [73]
I believe the answer is A. Have a blessed day.
6 0
2 years ago
A man 6 feet tall walks at a rate of 6 feet per second away from a light that is 15 feet above the ground.
Tems11 [23]

Answer:(a)10 ft/s

(b)4 ft/s

Explanation:

Given

height of light =15 feet

height of man=6 feet

\frac{\mathrm{d} x}{\mathrm{d} t}=6 ft/s

From diagram

\frac{15}{y}=\frac{6}{y-x}

5(y-x)=2y

3y=5x

differentiate both sides

3\times \frac{\mathrm{d} y}{\mathrm{d} t}=5\times \frac{\mathrm{d} x}{\mathrm{d} t}

Tip of shadow is moving at the rate of

\frac{\mathrm{d} y}{\mathrm{d} t}=\frac{5}{3}\times 6=10 ft/s

(b)rate at which length of his shadow  is changing

Length of shadow is y-x

differentiating w.r.t time

\frac{\mathrm{d} (y-x)}{\mathrm{d} t}=\frac{\mathrm{d} y}{\mathrm{d} t}-\frac{\mathrm{d} x}{\mathrm{d} t}

\frac{\mathrm{d} (y-x)}{\mathrm{d} t}=10-6=4 ft/s

7 0
3 years ago
HELP ASAP!!! PLEASE!!
prohojiy [21]

Answer:

Explanation:

The weaker force is pulling to direction East(450 newton)

the net force is (500-450=50 newton) and will move toward west ( in 500 newton direction)

6 0
2 years ago
Parallel circuits are most likely to be used in which of the following?
lara31 [8.8K]
They're most likely to be used in a house because if you turn on a switch in ur house the rest of them stay off they don't turn on
6 0
2 years ago
Read 2 more answers
Other questions:
  • If the speed of light in a sphere is 2 × 108 m/s, its index of refraction is
    11·1 answer
  • If you know a car is traveling 300 km in 3 hours, you can find its
    11·1 answer
  • What did Rutherford discover about the structure of the atom
    15·1 answer
  • A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. What is the speci
    10·1 answer
  • Is it illegal to have earbuds in your ears while swimming at a swim meet.
    14·2 answers
  • Use the equation d = st, where d = distance, s = speed, and t = time. If you ride
    15·1 answer
  • what are geology,astronomy,and physics is the answer hypothesis,scientific inquiries,scientific discplines,or protocols?
    15·1 answer
  • Tìm chỉ số của A1 và A2
    11·1 answer
  • Sarah and her bicycle have a total mass of 40 kg. Her speed at the top of a 10 m high and 100m long hill is 5 m/s. If the force
    14·1 answer
  • Why does the moon orbit the Eart
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!