Answer:
the relativistic Doppler effect,
Explanation:
The emission of 21 cm from hydrogen atoms suffers from the relativistic Doppler effect, this is a current of its wavelength due to the relative speed between the source and the observer, us located on Earth.
If the object is moving away from us the shift is towards red and if the body is approaching towards us the shift is towards blue.
Also the value of the shift depends on the speed of the body.
Explanation:
If we assume negligible air resistance and heat loss, we can assume that all of the Gravitational potential energy of the ball will turn into Kinetic energy as it falls toward the ground.
Therefore our Kinetic energy = mgh = (10kg)(9.81N/kg)(100m) = 9,810J.
Answer:
60kgm/s
Explanation:
Given parameters:
Mass of frisbee = 5kg
Final speed = 12m/s
Unknown:
Impulse of the frisbee = ?
Solution:
The impulse of the frisbee is the same as the change in momentum.
It is given as:
Impulse = mass (Final velocity - Initial velocity)
Impulse = 5(12 - 0) = 60kgm/s