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
aalyn [17]
3 years ago
8

A ball is dropped from the roof of a building. the mass of the ball is 3.0 kg. what is the potential energy of the ball in the i

nstant that it is exactly 18.0 meters above the ground?
Physics
1 answer:
vitfil [10]3 years ago
6 0
According to given condition there is no height(m) given from roof of building to the ground, there height given 18 m at a point above the ground.                         So, h=18m  ,                mass=3kg     ,         g=9.8m/s2                                                                      P.E=mgh                                                                                                                P.E=(3)(9.8)(18)                                                                                                      P.E=529J
                                      
You might be interested in
At what angle are the electronic and the magnetic wave related in an electromagnetic signal?
VikaD [51]

Answer:

90degrees I'm pretty sure

7 0
3 years ago
How long does it take a car to cross a 20m bridge if it starts from rest and accelerates at 5 m/s^2?
polet [3.4K]

The correct answer is 2.8s

5 0
3 years ago
WILL MARK BRAINLIEST!
boyakko [2]
It’s mass is 100 kg, because if you divide both numbers, you get 100
6 0
3 years ago
To shoot a swimming fish when an intense light beam from a laser gun you should aim
Ivan

Answer

aim directly at the image

Explanation

the light from the laser beam will also bend when it hits the air water interface , so aim directly at the fish

5 0
3 years ago
What is the period of a wave with a frequency of 100 Hz and a wavelength of 2.0 m
spin [16.1K]

The answer for the following answer is answered below.

  • <u><em>Therefore the time period of the wave is 0.01 seconds.</em></u>
  • <u><em>Therefore the option for the answer is "B".</em></u>

Explanation:

Frequency (f):

The number of  waves that pass a fixed place in a given amount of time.

The SI unit of frequency is Hertz (Hz)

Time period (T):

The time taken for one complete cycle of vibration to pass a given point.

The SI unit of time period is seconds (s)

Given:

frequency (f) = 100 Hz

wavelength (λ) = 2.0 m

To calculate:

Time period (T)

We know;

According to the formula;

<u>f =</u>\frac{1}{T}<u></u>

Where,

f represents the frequency

T represents the time period

from the formula;

  T = \frac{1}{f}

 T = \frac{1}{100}

  T = 0.01 seconds

<u><em>Therefore the time period of the wave is 0.01 seconds.</em></u>

5 0
3 years ago
Read 2 more answers
Other questions:
  • An object is dropped from rest and falls freely 20 m to Earth. When is the speed of the object 9.8 m/s?
    6·1 answer
  • WILL GIVE BRAINLIEST.
    7·1 answer
  • Why is it important for scientists to replicate each other’s experiments?
    14·2 answers
  • An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the fo
    8·1 answer
  • How can a heat pump warm a house by causing a refrigerant to evaporate and condense
    14·1 answer
  • Which most accurately describes the path that sound​ travels??
    6·1 answer
  • Dorji weight 1500n.if the total surface area of soles of his feet is 0.5 m2 what is the pressure exerted by his body on the grou
    11·1 answer
  • A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surfac
    15·1 answer
  • A commuter train passes a passenger platform at a constant speed of 39.6 m/s. The train horn is sounded at its characteristic fr
    7·1 answer
  • If a book has a mass of 3 kg, what is the book's weight in N?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!