Motion in a Plane — Physics STD 11 Science — Question

Define two principle specific heats of a gas. Which is greater and why?

The Young’s modulus for steel is much more than that for rubber. For the same longitudinal strain, which one will have greater tensile stress?

A resistance is connected to an AC source. If a capacitor is included in the series circuit, will the average power absorbed by the resistance increase or decrease? If an inductor of small inductance is also included in the series circuit, will the average power absorbed increase or decrease further?

On a wire whose diameter is 0.4 cm, a weight of 25 kg is suspended due to this, the length of 50 cm wire becomes 51 cm then find the Young's Modulus of elasticity?

Name one system where the compressional and tensional modulus of elasticity are different. Give reason.

A closed organ pipe can vibrate at a minimum frequency of 500Hz. Find the length of the tube. Speed of sound in air = 340m/s.

A car travelling with a speed of 90km/ h on a straight road is ahead of a scooter travelling with a speed of 60km/ h. How would the relative velocity be altered, if scooter is ahead of the car?

Why are the wings of an aeroplane rounded outwards while flattened inwards?

Give any two examples to explain Newton's third law.

When a train starts, the head of a standing passenger seems to be pushed backward. Analyse the situation from the ground frame. Does it really go backward? Coming back to the train frame, how do you explain the backward movement of the head on the basis of Newton's laws?