Physics Answers

1. Three capacitors with individual capacitances of 2 μF, 5 μF, and 10 μ respectively are connected in series with a 12V battery. What are the total capacitance and total charge in the network?
2. Same capacitors in number 1 connected in a parallel. If the combined charge in the network is 50 μC, what are the total voltage and total capacitance in the network?

A flywheel has a moment of inertia of 4.8 kg-m2 . What constant force is required to increase its

frequency from 3 rev/s to 6 rev/s in 7 revolutions?

14 The resistance ofa wire is given by

R= Roll+at+Bt?) PROBLEMS where is

the temperature in degrees Celsius

measured on the ideal gas scale and so

Ro is the resistance at the ice point. The

constants G and B are 3.8 x 10-%K and-

3.0x 106K respectively: Calculate the

tempera-ture on the resistance scale at

a temperature of 70*C on the ideal gas

Scale

Find the change in kinetic energy by an elastic spring with spring constant of 100 N/cm, as it goes back to its equilibrium position, from a length of 10 cm to 15 cm.

a. -250 J

b. -1250 J

c. 0

d. -2500 J

If v=fλ If frequency increase while two factor to actual value. what is the velocity of the facor

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure.

the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10liter

calculate the net work done by the gas

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure.

the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10litre

Calculate

the energy expelled by the gas.

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure. the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10litre

calculate the energy added to the gas.

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure. the process A:B is a reversible isothermal expansion. calculate the net work done by the gas?

A car of 700 kg moving with a velocity of 10 m/s. A motor bike of 120 kg

also moving with same speed in the same direction lying behind 10 meter

from the car. What is there collision velocity?(