Mechanics | Relativity Answers

Write an expression for Plank's law of radiation

Calculate the maximum monochromatic emissive power at 288k

An iron ball at 40 degree Celsius is dropped into a bar containing water at 40 degree Celsius. explain how the heat will flow

In a hydraulic press, a force of 20N is applied to a piston of area 0.2m. if the area of the other piston is 2m^2, what is the pressure transmitted through the fluid

A heavy flywheel of inertia 0.5kgm^2 is put on a horizontal axis of a radius 2cm which has negligible mass. if a force of 50N is applied tangentially to the axle, what is the torque that rotates this flywheel if friction is neglected. ii. angular acceleration and ii. the angular velocity of the flywheel after 15s from rest

A disc of moment of inertia of a body about s given axis 15kgm^2 rotates constantly about the centre with an angular velocity of 20rads^-1. find its rotational energy and its angular momentum about the centre

A ball of radius 5.5cm rolls down an inclined plane from rest. if its angular velocity 5 seconds later is 8.5 rad/s. calculate a. its angular acceleration b. its linear velocity after 5 seconds

A ball is thrown vertically upwards with an initial speed of 15ms^-1.
i. How long does it take the ball to return to the thrower
ii. What is the maximum height reached by the ball

In the Bernoulli's equation prove that 1/2 V^2 has same dimension as pressure.

Friction is necessary evil. Discuss