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
givi [52]
3 years ago
15

2. A cinder block is sitting on a platform 20 m high. It weighs 16kg. The block has

Physics
1 answer:
Cerrena [4.2K]3 years ago
7 0

Answer:

3136 Joules

Explanation:

Applying,

P.E = mgh.............. Equation 1

Where P.E = potential energy, m = mass of the cinder block, h = height of the platform, g = acceleration due to gravity.

From the question,

Given: m = 16 kg, h = 20 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

P.E = 16(20)(9.8)

P.E = 3136 Joules

Hence the potential energy of the cinder block is 3136 Joules

You might be interested in
A race car circles 10 times around a circular 8.0-km track in 20 min.
Otrada [13]
Find the average speed and the average velocity.

Average speed = distance / time

distance = 10 x 8000 m = 80,000 m
time = 20 min * 60 s/min = 1200 s

Average speed = 80,000 m / 1200 s = 66.67 m/s

Average velocity = displacement / time

Given that the race car made complete circles the final poin is the same initial point, then its displacement is zero and the average velocity is zero too.
6 0
3 years ago
Read 2 more answers
Which particle rarely interacts with matter?
Marysya12 [62]
D. Neutrino
Neutrinos are particles that rarely interact with matter.
4 0
3 years ago
The weight of an object on the surface of mass is 1850 Newton and its mass is 500kg.Find the acceleration due to gravity on mars
Fudgin [204]

F = m.a

a = F/m

a = 1850/500

a = 3.7 m/s²

3 0
2 years ago
One ball is dropped vertically from a window. At the same instant, a second ball is thrown horizontally from the same window.
geniusboy [140]

Answer:

The second ball

Explanation:

Both balls are under the effect of gravity, accelerating with exactly the same value. The first ball is dropped, therefore its initial velocity is zero. Since the second ball has horizontal and vertical velocity components, its initial velocity is given by:

v=\sqrt{v_x^2+v_y^2}

The vertical component is zero, however, it has a horizontal velocity, so its initial speed is not zero, therefore the secong ball has the greater speed at ground level.

7 0
3 years ago
In 2014, about how far in meters would you have to travel on the surface of the Earth from the North Magnetic Pole to the Geogra
pogonyaev

Answer:

267.07 km

Explanation:

We have given the radius of the earth = 6378.1 km

In 2014 the difference between the magnetic north pole and geographical north pole is 2.40°

2.40°=2.40\times \frac{\pi }{180}=0.041866 radian

We know that linear distance is given by S=R\Theta =6378.1\times 0.041866=267.07km

So we have to travel 267.07 km in going from magnetic north pole to geographic north pole

3 0
3 years ago
Other questions:
  • A 90kg person jumps from a 30m tower into a tub of water with a volume of 5m3 initially at 20°C. Assuming that all of the work d
    7·1 answer
  • The drawing below shows two different types of pulley systems designed to lift a weight. In pulley system A, the end of the rope
    9·2 answers
  • What variables show a direct relationship? Check all that apply. the speed of a car and the distance traveled the elevation abov
    7·2 answers
  • _____ is the horizontal change between two points on the line.
    7·2 answers
  • 0.403 L is equal to: <br> 4.03 mL <br> 40.3 mL <br> 403 mL <br> 4,030 mL
    15·2 answers
  • Which of the following elements are most likely to have similar chemical properties?
    7·1 answer
  • Equal masses are suspended from two separate wires made of the same material. The wires have identical lengths. The first wire h
    8·1 answer
  • What do you call the point of interest on a velocity versus time graph?​
    10·1 answer
  • Which describes acceleration involving only a change in direction?
    10·2 answers
  • In the United States, household electric power is provided at a frequency of 60 HzHz, so electromagnetic radiation at that frequ
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!