Physics Answers

The force F experienced by the charge Q=2c moving with the velocity V with a magnitude B is given by F=qv×B

Given

V= 2i+4j+6k

F=4i-20j+12k

What then is B

If Bx=By

if the mass of water filling bottle is 25g and the mass of oil filling the bottle is 20g. What is the density of the oil.

(a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate the wavelength of each.

(b) Which frequency would produce smaller hot spots in foods due to interference effects?

The maximum magnetic field strength of an electromagnetic field is 5×10⁻⁶T. Calculate the maximum electric field strength if the wave is traveling in a medium in which the speed of the wave is 0.75c

Show that, when SI units for μ0 and ϵ0 are entered, the units given by the right-hand side of the equation in the problem above are m/s.

Show that, when SI units for μ0 and ϵ0 are entered, the units given by the right-hand side of the equation in the problem above are m/s.

A stone thrown from the top of a building is given an initial velocity of 20.0 m/s straight upward. The stone is launched 50.0 m above the ground Determine the time at which the stone reaches its maximum height.

evaluate the moment of inertia of a thin rod with axis of rotation at the centre, if its length is 100cm and its mass is 2.3kg

A BODY HAS A MASS OF 15KG AND IT IS BEING PUSHED HORIZONTALLY WITH A FORCE OF 100N IF IT HAS A COEFFICIENT OF KINETIC FRICTION 0.3 THEN WHAT IS THE ACCELERATION OF THE BODY)

The energy stored per unit volume of the inductor is called the energy density of the magnetic field. Why?