C. 7, 5 solar and 2 lunar eclipses or 2 solar and 5 lunar eclipses
Time stops everything is made out of atoms so if atoms freeze everything freezes
Answer:
25.9 m/s
Explanation:
mass of ball, m = 0.145 kg
initial velocity, u = + 32 m/s
It bounce back with the velocity but in opposite direction so final velocity,
v = - v
Impulse, I = - 8.4 Ns
Impulse is defined as the change in momentum
I = m v - mu = m (v - u)
- 8.4 = 0.145 x (- v - 3 2)
- 57.9 = - v - 32
v = 57.9 - 32 = 25.9 m/s
Thus, the final speed of the ball is 25.9 m/s
Answer:
D) -Q
Explanation:
The charge inserted will induce -Q charge on the inner surface and + Q on the outer surface of the shell . This charge is called bound charge because it remained attached with opposite charge inserted inside.
Answer:
d. 332 V
Explanation:
Given;
number of turns in the wire, N = 40 turns
area of the coil, A = 0.06 m²
magnitude of the magnetic field, B = 0.4 T
frequency of the wave, f = 55 Hz
The maximum emf induced in the coil is given by;
E = NBAω
Where;
ω is angular velocity = 2πf
E = NBA(2πf)
E = 40 x 0.4 x 0.06 x (2 x π x 55)
E = 332 V
Therefore, the maximum induced emf in the coil is 332 V.
The correct option is "D"
d. 332 V