Answer:
T = 0.638 s
Explanation:
vmax = Aω
ω = 7.02/0.713 = 9.8457 rad/s
T = 2π/ω = 2π/9.8457 = 0.63816
Answer:
is the mass of librarian.
Explanation:
Given:
- mass of the system,

- velocity of librarian relative to the ground,

- velocity of the cart relative to the ground,

N<u>ow using the principle of elastic collision:</u>
Net momentum of the system is zero.


is the mass of librarian.
W=1/2cvsqr....1/2*25*10^-6*144
0.0000125*144=0.0018=18micro farad
<span>Answers: (a) 2.0 m/s (b) 4 m/s
Method:
(a) By conservation of momentum, the velocity of the center of mass is unchanged, i.e., 2.0 m/s.
(b) The velocity of the center of mass = (m1v1+m2v2) / (m1+m2)
Since the second mass is initially at rest, vcom = m1v1 / (m1+m2)
Therefore, the initial v1 = vcom (m1+m2) / m1 = 2.0 m/s x 6 = 12 m/s
Since the second mass is initially at rest, v2f = v1i (2m1 /m1+m2 ) = 12 m/s (2/6) = 4 m/s </span>
Answer:

Explanation:
Each time the work done to raise a given mass is

here we know that


now we have


since it is just 25% of actual energy consumed as we know its efficiency is 25%
so we have total energy consumed in this way


now if it took N number of times so burn the fat of a pizza then

