Other Physics Answers

A 6-V battery in a simple circuit produces a current of 1.5 A through the circuit. How much power is being delivered by the battery in W?

30 C of charge passes in a 5 second period through a resistive material of cross- sectional area of a circle with radius 1 x 10^-3 m. How much of the current goes through the cross-section in A?

Three 20-Ω resistors are connected in series to a 6-V battery that has only negligible internal resistance. What is the voltage difference across each resistor in V? (Hint: First calculate the current going through the three resistors and then find the voltage difference.)

Assume T=kL^x g^y. Find the value of x and y for which the above equation is dimensionally correct

Is it possible for an object to receive a large impulse from a small force than a large force?

A crane moved a 160kg hot tub from the ground to the rooftop of a hotel 54 m above the ground. If the crane used 180, 000 joules of energy, how efficient was the crane?

list down 3 sports/events that utilizes the concept of Torque and briefly explain how this concept is used.

the sum of the potential differences across the components in a series circuit is equal to the total potential difference across the supply.

a) Define elasticity of a matter.

b) Define stress and strain. Explain different types of stress and strain. 1+4

c) The radius of a silver bar is 30 𝑐𝑚. What force is required to stretch the bar by 12.7% of its length where Young’s modulus is 𝑌 = 7.25 × 1010 𝑁𝑚−2 .

Find the moment of inertia of adisc of radius 0.4m and mass 0.75 kg.