Mechanics | Relativity Answers

What is the kinetic energy of a

proton (proper mass is m0 = 1.67 x 10^-27 kg) travelling at 40 % of the speed

of light?

The rest mass of an electron is 9.1 x

10^-31 kg. What is the relativistic mass if its velocity is 55 % of the speed

of light?

A cabel is pulling a box with mass 300 kg on a horizontal plane. The cabel acts 60

on the direction of movement of the box. If the tension in the cabel is 1000 N and

the box is moved for 4.5 m, calculate the work done to move the box.

A cabel is pulling a box with mass 300 kg on a horizontal plane. The cabel acts 60

on the direction of movement of the box. If the tension in the cabel is 1000 N and

the box is moved for 4.5 m, calculate the work done to move the box.

A satellite orbits Earth at an altitude of 356 kilometers above the planet's surface. Compute for its (a) radius (b) speed (c) orbital period. (ME=5.97x10^24 kg)

When a soccer ball is rolling along a Grassy feild it does not continue moving forward. What is acting upon it to change its state

Compute the contracted length of an

object whose initial length 30 m and travel with a velocity 0.65c?

Is interference a property of some types of waves only or is it a property of all

types of waves?

A cantilever of length 2 m carries two point loads of 20 KN at the free end and 30 KN at a distance of 1 m from the free end. Find the slope and deflection at free end. Take E= 2×10^5 N/mm^2 and I= 1.5×10^8 mm^4