Physics

What magnetic field strength would be required to bend the following into a circular path

Alpha particles of charge q = +2e and mass m = 6.6e-27 kg are emitted from a radioactive source at a speed of 1.5e7 m/s. What magnetic field strength would be required to bend these into a circular pa

Why do circular objects such as tires role on the ground without stopping? What is the scientific reason

Can you explain the mathematics and science involved?-Friction happens when two surfaces move along each other, or try to. However, when something circular rolls, the very bottom surface where it touc

What fraction of the rotational kinetic energy is lost

A wheel is rotating freely at angular speed 550 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 3 times the rotational inertia of the first, is su

How Come a bullet breaks the sound barrier when it does not produce any sound

As you know sound barrier is created when any object move faster that the sound wave it produce. But when an object moves without making any sound how the sound barrier is created? or the bullet does

I'm stuck with some Velocity Physics. Help would be incredibly awesome.

A 85kg boy and a 100kg girl, both wearing skates, face each other at rest on a skating rink. The boy pushes the girl, sending her eastward with a speed of 4m/s. Calculate the velocity of the boy. (neg

Physics lenses question

A coin is located 22.0 cm to the left of a converging lens (f = 16.0 cm). A second, identical lens is placed to the right of the first lens, such that the image formed by the combination has the same

(Physics) A thermos flask containing milk as a system is shaken rapidly. Does the temperature of milk rise

How? giving reasons IN terms of Kinetic energy of molecules , heat and thermodynamic-By shaking, the milks molecules will obtain extra kicks as they bounce off a moving wall. This will increase their