Answer:
answer E
Explanation:
cuz its 45 is divisible by 3 and 5 but not 10
It would be gravity i do beileve
Answer:
t = 141.55 years
Explanation:
As we know that the radius of the wire is
r = 2.00 cm
so crossectional area of the wire is given as



now we know the free charge density of wire as

so drift speed of the charge in wire is given as



now the time taken to cover whole length of wire is given as




Answer:
A) 0.44 rad/s
B) 3.091 rad/s
Explanation:
Initial angular momentum must be equal to final angular momentum.
W1 = 0.80 rad/s
I = 1360 kgm^2
Initial moment Iw = 0.8 x 1360 = 1088 rad-kg-m^2/s
For second case
I = (65 x 4)4.2 + 1360 = 2452 kg-m2-rad/s
New momentum = 2452 x W2
Where w2 = final angular momentum
= 2452W2
Equating both moment,
1088 = 2452W2
W2 = 0.44 rad/s0
If they were on it before,
Initial momentum
I = 1360 - (60 x 4)4.2
= 352 rad-kg-m^2/s
352W1 = 1088
W1 = 3.091 rad/s