Answer:
1250kg
Explanation:
we can solve this using the formula for the Kinetic Energy
Answer:
This is the answer. hope this help u
Pretty simple
The no atmosphere says that theres no air resistance, making the problem 10 times easier.
If the hammer is thrown upwards, it has a positive inital velocity of 14m/s
Now gravity is trying to pull it downwards so the accelerating is -3.5m/s^2 (closest planet I can think off with this acceleration is Mercury, but thats besides the point)
Anyways we can use kinematic equations to solve that
Vf = vi + at
Vf = 14m/s +(-3.5)(8)
Vf = -14 m/s
So after 8 seconds the ball is going downwards at the same height that you threw it.
answer : -14m/s or you can say 14m/s downwards
6.6 * V/m is the electric field amplitude of an electromagnetic wave whose magnetic field amplitude is 2.20 mT
<h3>Given the data in the question:</h3>
Magnetic field amplitude = Bm = 2.20 mT = 2* T
Electric field amplitude = Em = ?
<h3>Electric field:</h3>
An electric field is a field created by electrically charged particles that attracts or repels other electrically charged particles surrounding it.
The greatest strength of the electric and magnetic fields is known as the electric field amplitude.
It can be said to be,
Em = c * Bm
Where, c is the speed of light(c = 3 * m/s)
Bm is the magnetic field amplitude
On substituting the values we get,
Em = c * Bm
Em = 3 * m/s * 2.20 * T
Em = 660000 V/m
Em = 6.6 * V/m
To learn more about electric field amplitude visit:
brainly.com/question/12497269
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Answer:
The potential energy can be given as
E = mgh. m is mass, g = acceleration due to gravity = 9.8m/s, h is the heigh, given as 100.0m
E = m x 9.8 x 100 = (980m)J
E = (980m)/10^9GJ = (0.000000980m)GJ to 3 significant figures
Explanation:
Hydroelectric dams exploit storage of gravitational potential energy. A mass, m, raised a height, h against gravity, g = 9.8 m/s², is given a potential energy E = mgh. The result will be in Joules if the input is expressed in meters, kilograms, and seconds (MKS, or SI units).