Physics Answers

A runner's speed is 15 m/s. What distance can he travel after 0.25min?

C1=10F, C2=2F, and C3=1F are in parallel connection. What is their total capacitance? Draw the circuit diagram of the connection.

five 10- resistor are connected in parallel and the combination is connected to 10-V emf device. what is the current device

The temperature of an ideal gas remains constant while the absolute pressure changes from 103.4 kPaa to 827.2 kPaa. (a) If the initial volume is 80 liter, what is the final volume? (b) for 160 gram of the gas, determine the change of density.

The circuit in the figure on the right shows a network of resistors

connected in series and in parallel.

(a) Determine the total resistance of the network.

(b) What is the current through the 3.00-Ω?

A 32.0-Ω resistor and a 20.0-Ω are connected in parallel, and the combination is applied

across a 240 V dc line.

(a) What is the resistance of the parallel combination?

(b) What is the total current through the parallel combination?

(c) What is the current through each resistor?

Calculate the rotational inertia of a meter stick, with mass 0.24 kg, about an axis perpendicular to the stick and located at the 30 cm mark. (Treat the stick as a third rod.)

a) 90.7 x 10^-3 kg.m²

b) 41.6 x 10^-3 kg.m²

c) 20 x 10^-3 kg.m²

d) 29.6 x 10^-3 kg.m²

A 100 μF capacitor is charged from a supply of 1000V, disconnected from the  supply and then connected across an uncharged 50 μF capacitor. 

Calculate the energy stored initially and finally in the  

two capacitors. What conclusion do you draw from a  

comparison of these results?

A womans height is 5 feet, 8 inches, and her weight is 150 pounds. Express her height in inches and her weight in kilograms.

A 300 uF capacitor separated by a distance of 4.0 mm was charged to a potential difference of 250 V. What is the energy density in its region in terms of Joules/m³?