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
den301095 [7]
2 years ago
13

A soccer ball is dropped from the height of 2m and falls to the floor. What is the relationship of the potential and kinetic ene

rgies of the ball as the ball falls to the floor?
Physics
1 answer:
Alexandra [31]2 years ago
4 0

We know , gravitational force is a conservative force .

Therefore , total energy of the system remains constant .

P.E_i+K.E_i=P.E_f+K.E_f

Let , mass of object is m.

So ,

mg(2)+0=0+\dfrac{mv_f^2}{2}\\\\v_f=\sqrt{4g}\\\\v_f=\sqrt{4\times 9.8}\ m/s\\\\v_f=6.26\ m/s

Therefore , the velocity at floor is 6.26 m/s .

Hence , this is the required solution .

You might be interested in
HELP HELP HELP ME!!!
zzz [600]
I believe the answer is C. Hope this helps!!

7 0
3 years ago
Which of the following will increase the force of gravity between two charged objects without affecting the electric force?
jasenka [17]

Answer:

I believe the answer is D

Explanation:

3 0
3 years ago
An electron in a mercury atom changes from energy level b to a higher energy level when the
emmainna [20.7K]
The energy is 3.06 electronvolts,  E = 3.06eV

1eV = 1.6 * 10^-19 J

3.06 eV = 3.06* 1.6 * 10^-19 J = 4.896 * 10^-19 J


4 0
3 years ago
What does it mean to say that a wave is a cyclic, or periodic, disturbance
Ivenika [448]

Wave is a disturbance or energy that propagate through medium from one point to other point

So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.

This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order

For an example

y = A sin(\omega t + kx + \phi)

so here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

Due to this phenomenon of repeatation of its same position we can say that it is disturbance of wave is cyclic.

3 0
3 years ago
A 30kg mass is brought from the earth to the moon what is the weight on the earth
ozzi

Answer:

Solution

verified

Verified by Toppr

Given:

Mass of body = 30 kg

gravitational acceleration on the moon = 1.62 m/s

2

Weight of the body on the moon = Mass of the body×gravitational acceleration on the moon=30×1.62=48 N

8 0
1 year ago
Other questions:
  • A student uses an electronic force sensor to study how much force the student’s finger can apply to a specific location. The stu
    12·2 answers
  • Why does the moon lack an atmosphere?  
    10·1 answer
  • The Milky Way is a _____ galaxy.
    11·2 answers
  • A sound wave travels through a column of hydrogen at STP. Assuming a density of rho = 0.0900 kg/m3 and a bulk modulus of β = 1.4
    5·1 answer
  • PLEASE TRY TO ANSWER AS MANY QUESTIONS AS YOU CAN !
    12·1 answer
  • How would a graph of velocity vs. Time would look like, if there was no motion at all? (Draw your graph)
    9·1 answer
  • A scientist performs an experiment and asks other scientists around the
    5·1 answer
  • In air, a sound wave with a frequency of 196 Hz has a wavelength of about 1.76 meters. What is the wavelength of a wave of the f
    10·1 answer
  • What would happen if a nuclear power plant blew up?.
    10·1 answer
  • 3 A rocket of mass 1200 kg is travelling at 2000 m/s. It fires its engine for 1 minute. The forward thrust provided by the rocke
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!