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
Serggg [28]
2 years ago
13

Find the hiker’s gravitational potential energy if the cliff is 60m high

Physics
1 answer:
Furkat [3]2 years ago
4 0

Answer:

Potential energy is U=mgh

Explanation:

The potential energy depends on the mass, the acceleration of gravity g and the height at which the object or person is.

Potential energy  U=mgh

In this case we would need to know the exact mass of the hiker in order to calculate the potential energy.

But we know the values of g and h

g=9.81m/s^2

h=60m

So, the potential energy

U=m(9.81m/s^2)(60m)\\\\U=588.6*m

m is the mass of the hiker, wich is not in the description of the problem.

You might be interested in
Which is the best insulator? metal, glass, plastic, or Styrofoam?
Mashutka [201]

Answer:

Styrofoam would be the best insulator because it traps the air in small pockets, blocking the flow of heat energy.

Explanation:

6 0
2 years ago
A ball starts at rest and rolls down an inclined plane. The ball reaches 7.5 m/s in 3 seconds. What is the acceleration?
just olya [345]

Answer:

a=2.5\ m/s^2

Explanation:

<u>Motion With Constant Acceleration </u>

It's a type of motion in which the velocity of an object changes uniformly over time.

The equation that describes the change of velocities is:

v_f=v_o+at

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

Solving the equation for a:

\displaystyle a=\frac{v_f-v_o}{t}

The ball starts at rest (vo=0) and rolls down an inclined plane that makes it reach a speed of vf=7.5 m/s in t=3 seconds.

The acceleration is:

\displaystyle a=\frac{7.5-0}{3}

\boxed{a=2.5\ m/s^2}

7 0
2 years ago
Differentiate between atmospheric pressure and pressure.​
Dovator [93]

Answer: atmospheric is air by the earth and pressure is just someone or something doing it

Explanation:

8 0
2 years ago
Read 2 more answers
A student witnesses a flash of lightning and then t=2.5s later the student hears assiciated clap of thunder. (please show work)
frosja888 [35]

Answer:

857.5 m

2.8583×10⁻⁶ seconds

Explanation:

Time taken by the sound of the thunder to reach the student = 2.5 s

Speed of sound in air is 343 m/s

Speed of light is 3×10⁸ m/s

Distance travelled by the sound = Time taken by the sound × Speed of sound in air

⇒Distance travelled by the sound = 2.5×343 = 857.5 m

⇒Distance travelled by the sound = 857.5 m

Time taken by light = Distance the light travelled / Speed of light

\text{Time taken by light}=\frac{857.5}{3\times 10^8}\\\Rightarrow  \text{Time taken by light}=2.8583\times 10^{-6}

Time taken by light = 2.8583×10⁻⁶ seconds

3 0
3 years ago
A large container is pulled 20 meters with 40 newtons of force. The power exerted is 64 watts. How long did it take to move the
Usimov [2.4K]
A.(20*40)/64=12.5 hope i helped
3 0
3 years ago
Other questions:
  • Select the properties that apply to superconductors.
    14·2 answers
  • Which of these stars has the hottest core?A)a blue main-sequnce star. B)a red supergiant. C)a red main-sequence star.
    12·2 answers
  • Will you chech and finish these for me, because I am stumped with them.
    5·1 answer
  • Special ways that animals' bodies work to help them survive in whatev
    10·1 answer
  • How can humans use their knowledge of changing states of matter to better society? (ex. A human can harness the thermal energy f
    14·1 answer
  • Explain how skeletal muscles work in pairs.<br><br> plzzzz answer asap !!
    12·1 answer
  • You have a cup full of water and a bathtub full of water. Both samples of water have a temperature of 30°C. Which sample has gre
    6·1 answer
  • Cold water currents bring blank or blank climates alongblank region
    8·1 answer
  • What happens to light when it travels from air into water
    8·1 answer
  • two identical springs of spring constant 7580 N/m are attached to a block of mass 0.245 kg. What is the frequency of oscillation
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!