Answer:
energy = 391.902 kJ /mol
Explanation:
given data
wavelength = 305 nm = 305 × m
to find out
average energy
solution
we know speed of light is 3 × m/s
so we find frequency here first by speed of light formyla
speed = wavelength × frequency
3 × = 305 × × frequency
frequency = 9.8360 ×
so energy is
energy = hf
here h = 6.62 × J-s
so
energy = 6.62 × × 9.8360 ×
energy = 6.51 × J
so
energy = 6.51 × × kJ/mol
energy = 391.902 kJ /mol
Answer:
Explanation:
Given
Mass of car
Force applied
time period
Acceleration associated with car
Acceleration is the change in velocity w.r.t time
thus, the change in velocity is
Answer:
Explanation:
Given:
- Linear horizontal speed of the ball,
- distance travelled by the ball,
- angle rotated by the ball,
- radius of the ball,
<u>the time for which the ball travels:</u>
<u>Angular speed of the ball:</u>
<u>Now the tangential speed at the equator of the ball:</u>
(the tangential speed due to rotation and the linear speed are having the same direction)