Answer:
Explanation:
Given

Suppose V is the volume of a cylinder
Also 
Now, we can write
The weight of the cylinder is supported by the buoyant forces of two liquids

using the above equation we can write

Use the formula,

where
is the cart's displacement (from the origin),
is its initial speed,
is its acceleration, and
is time.


Alternatively, since acceleration is constant, we have

That is, we have these two equivalent expressions for average velocity, where
is the cart's final velocity. Solve for
:


Answer:

Explanation:
given,
weight of the man = 680 N
weight of the woman = 500 N
mass of man = 
M_m = 69.4 Kg
mass of woman
= 
M_w = 51 Kg
ratio of man's kinetic energy Km to that of the woman Kw

momentum is same




(a) The capacitance of the capacitor is:

and the voltage applied across its plates is

The relationship between the charge Q on each plate of the capacitor, the capacitance and the voltage is:

and re-arranging it we find the charge stored in the capacitor:

(b) The electrical potential energy stored in a capacitor is given by

where C is the capacitance and V is the voltage. The new voltage is

so the energy stored in the capacitor is
Answer:Distance=6.67 (rounded)
Explanation: Work = Force x Distance.
100 Joules of work= force of 15 N x Distance (?)
The work equation given above can be rearranged to find force or distance if the other variables are known:
Distance=Work / force
Distance=100Joules/15 N
Distance=6.67 (rounded)