If 62.0 % of the kinetic energy delivered by a 1.90 kg hammer with a speed of 7.65 m/s is transformed into heat that flows into the nail and does not flow out, what is the increase in temperature of an 8.10 g aluminum nail after it is struck 10 times

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?