The momentum of two bodies of masses 1 kg and 4 kg are equal .Compare thier kinetic energies ?

Suppose you have a bar magnet with poles at the very ends, just on the faces. What is likely to happen to those poles?

what is the effect of placing a dielectric in between the two plates of a capacitor

) A railroad car of mass 12,000kg is traveling at a speed of 6.0 m/s when it collies with an identical car at rest. Thte two cars look together. What is their common speed after the collision?

) What impuse is needed to change the speed of a 10 kg object from 1.6 m/s to 25.5 m/s in a time of 5s. How much force is needed?

what is transverse loading ,axial loading ,polar moment of inertia ,moment of inertia

Helppppp please…. .A magnetic field strength of 5 ^A/m is required at a point on 6 = TT/2, 2 km from anantenna in air. Neglecting ohmic loss, how much power must the antenna transmit if it is (a) A

The proper length of one spaceship is three times that of another. The two spaceships are traveling in the same direction and, while both are passing overhead, an Earth observer measures the two space

Observer S detects two flashes of light. A big flash occurs at x1 = 1700 m and, 7.11 s later, a small flash occurs at x2 = 910 m. As detected by observer S’, the two flashes occur at a single coordin

a)what is frequency b)determine the wavelength of sound moving at a frequency of 500 Hz c)give a detailed explanation of the term reverberation