What is the effect of putting a ferromagnetic material inside the coil of a solenoid?

How is kinetic energy of an object determined?

the average wavelength in a series of ocean waves is 15.0 m. A wave crest arrives at the shore on average ever 20 seconds, so the frequncy is 0.050 Hz. What is the average speed of the wave?

person is 1.9 m tall. Where should he place the top of a mirror on the wall so he can see the top of his head? Assume his eyes are 5.1 cm below the top of his head. Find a minimal vertical distance from the level of the person's eye

The half-life (t1/2) for a chemical reaction is the time it takes for the concentration of reactant to decrease to one-half its initial concentration. For a first-order reaction, the half-life is a constant at a given temperature.

Which most likely has the greatest conductivity? a warm plastic rod a cool rubber tube a cool lead metal strip a warm copper wire

What does a velocity vs time graph look like for constant velocity if the speed is 2m/s. And the time is not given.

An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. in the process, the electron acquires a speed ve, while the proton acquires a speed vp. find the ratio ve/vp.

Why water is matter? what is the reason

Restate newton's first law in terms of acceleratin

What step precedes the onset of hydrogen fusion in a star?