Answer:
Explanation:
in parallel combination equivalent resistence =
1/R=1/R1 + 1/R2
1/2=1/15+1/30
1/2=1*2+1*1/30
1/R=3/30
R*3=30*1
R=30/3
R=10 ohm
Most likely gravity, because the gravity would pull it off course or wobble.
Answer:
The impulse is 1.89 Ns and final velocity of the golf 4.17 
Explanation:
Given:
Average force
N
Contact time
sec
Mass of golf ball
kg
(a)
Impulse is given by,


Ns
(b)
For finding the final velocity,




Therefore, the impulse is 1.89 Ns and final velocity of the golf 4.17 
Answer:
2.25m/s
Explanation:
wavelength=4.5m
period=2sec
frequency= 1/period
=1/2
speed= wavelength×wave frequency
=4.5×1/2
=2.25 m/s
so, none of the options are correct
A person runs up 40 stairs and then come down 10 steps
So total stairs upwards is given as

now here we will have total height reached


Now total energy used or mechanical work done is


Now the mechanical power is given as

