Ns
When the force on an object is multiplied by the time it is acting, the Impulse of a force is generated. This is a vector unit and is equal to the change in momentum with its unit as kilogram meter per second (kgms) or Newton Second (Ns)
Answer:
you will get charge
Explanation:
Most shocks happen because you and the car have picked up opposite charges. Leaving your seat separates these charges, creating the potential for a static shock. Touching the metal of the car as you get out lets the charge balance out by flowing harmlessly through your hand
Answer:
The astronaut will be propelled towards the shuttle at the rate of 0.4 m/s.
Explanation:
Given;
mass of the astronaut, m₁ = 95 kg
mass of the hammer thrown, m₂ = 2 kg
velocity of the hammer, v₂ = 19 m/s
let the recoil velocity of the shuttle = v₁
Apply the principle of conservation of linear momentum;
m₁v₁ = m₂v₂
v₁ = m₂v₂/m₁
v₁ = (2 x 19) / 95
v₁ = 0.4 m/s
Therefore, the astronaut will be propelled towards the shuttle at the rate of 0.4 m/s.
Answer:
Option b. is true
Explanation:
- Light travel slower in glass than in air because of glass is denser than air and its refractive index is more than that of air. Therefore, except air, light travels slower in any other medium
Other options are not correct like
When an electromagnetic wave enters a new medium it speed as well as wavelength changes but frequency does not change.
It is caused by conduction! :D