Classical Mechanics Answers

An energy source forces a constant current of 2 A for 10 s to flow
through a light bulb. If 2.3 kJ is given off in the form of light and heat
energy, calculate the voltage drop across the bulb.

The electric field in an electrostatic situation is denoted by the function E and the potential by the function V in a certain volume. Inside this volume,

(a) If E is given, V can be uniquely written.

(b) If V is given, E can be uniquely written.

(c) If E is same everywhere in the volume, V cannot change in this volume.

(d) If V is same everywhere in the volume, E cannot change in this volume.

During a baseball game, a batter hits a high
pop-up.
If the ball remains in the air for 4.72 s, how
high above the point where it hits the bat
does it rise? Assume when it hits the ground
it hits at exactly the level of the bat. The
acceleration of gravity is 9.8 m/s
2
.
Answer in units of m.

A simple harmonic oscillator of frequency 1Hz has a phase of 1 radian.By how much should the origin be shifted in time so as to make the phase of the oscillator vanish. (time in seconds (s)).
Ans: -1/2π

A mass of 50kg collide with a wall elastically with 5m/s velocity find the impulse imparted by wall and ball on each other?

write a note on orbital velocity.

write down capillary formula.

write note on strain.

explain difference between stress and pressure.

write down note on stress of material.