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
UNO [17]
1 year ago
11

A stone of weight 10N falls from the top of a 250m high cliff. a) Calculate how much work is done by the force of gravity in pul

ling the stone to the foot of the cliff. b) How much energy is transferred to the stone?​
Physics
1 answer:
tiny-mole [99]1 year ago
4 0

Answer:

work done = ( force × displacement)

(a)The force acting on the block is it's self weight and displacement is equal to height of the tower.

work done by gravity = (250 × 10) = 2500 joule

(b) The work done by gravity 2500 joule is transferred to the object in the form of it's kinetic energy.

You might be interested in
Which part of the battery is electron enriched?
dexar [7]
The answer is b. Negative terminal.
5 0
3 years ago
Read 2 more answers
What are some of the difficulties with measuring the volume of a gas? Select all that apply.
forsale [732]

Answer:

it is ---D because you can't measure gas and it's mass

HOPE THIS HELPS

6 0
3 years ago
A 2.2-kg block slides on a horizontal surface with a speed of v=0.80m/s and an
mina [271]

Answer:

μ = 0.33

Equal to 3.2 m/s²

Explanation:

Draw a free body diagram of the block.  There are three forces:

Normal force N pushing up.

Weight force mg pulling down.

Friction force Nμ pushing opposite the direction of motion.

Sum of forces in the y direction.

∑F = ma

N − mg = 0

N = mg

Sum of forces in the x direction.

∑F = ma

Nμ = ma

Substitute.

mgμ = ma

μ = a/g

μ = (3.2 m/s²) / (9.8 m/s²)

μ = 0.33

As found earlier, the acceleration is a = gμ.  Since g and μ are constant, a is also constant, so it does not change with velocity.

5 0
3 years ago
How does tripling the distance between two objects affect the gravitational force between them?
Wewaii [24]
It weakened the gravitational force between the oblects.
6 0
3 years ago
Read 2 more answers
The US government wants to allocate billions of dollars in the next 10 years to help assure our future energy security. The fund
Tom [10]

This question is a very good one indeed! I am very happy you asked it. I would first like to say that, although energy is important, our planet is more so. That is why I feel like we should always try to explore ideas that are both useful to the human race but also useful in protecting our environment because what is the use in having energy if we will not be able to use it. That is why I feel that we should try at types of energy like solar and wind. The problem is finding ways that are less expensive and more efficient. For example, creating a wind energy system that creates a sizeable about of energy and also is not too expensive and hard to make like the wind turbines of nowadays. Also what comes into question is the effect of these ideas and I feel that although some of these may have harmful effects, they must be used. One thing though is that I do not agree in expanding on our oil and gas exploration because it has so many bad effects to our environment that it is hardly worth it. If we can find alternatives in these other sources, like many states in the USA are trying to do, then we will be able to move much faster in technology and also help protect our lovely planet.

7 0
3 years ago
Other questions:
  • PLEASE help me!!! ASAP!! Ill mark you as brainliest!!!!
    9·1 answer
  • A water heater warms 35 l of water from a temperature of 22.7 c to a temperature of 83.7
    10·1 answer
  • If a car has a velocity of 40 km/h west and then comes to a stop in 5 s, what is its acceleration in m/s2?
    10·1 answer
  • Jill tells Bobby that the lightest element in the periodic table is Chlorine because it has an atomic number of 17. Bobby states
    6·1 answer
  • Charles' Law
    15·1 answer
  • Which type of heating system is often used to heat many buildings from a central location
    12·1 answer
  • The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill?
    10·1 answer
  • Which of the following statements is false?
    9·1 answer
  • A 0.25-kilogram ball is observed to accelerate at 4,000 m/sec2 as it is hit with a bat.
    7·1 answer
  • A 16.0 kg canoe moving to the left at 12.5 m/s makes an elastic head on collision with a 14.0 kg raft moving to the right at 16.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!