Common units of measurement for speed.

A pool ball rolling at 10m/s[w] strikes a cushion and then rebounds at a velocity of 10m/s[s]. what is the change in velocity of the pool ball?

A bar magnet is dropped toward a conducting ring lying on the floor. As the magnet falls toward the ring, does it move as a freely falling object? Provide full explanation.

Two similar sized stones, one heavy and one light, are dropped from the same height into a pond. Explain why the impact of the heavy stone would produce waves with higher amplitude than the impact of the light done would.

When may a scientist change a hypothesis

Calculate the tension in qa horizontal string that whirls a 2-kg toy in a circle of radius 2.5 m when it moves at 3 m/s on an icy surface.

In which of the following wave types is the particle motion perpendicular to wave motion? a: longitudinal wave b: p wave c: surface wave d: transverse wave

Convert 1.5 radian into milliradians.

Whats the core of electromagnet made of?

Ultraviolet light emits a total of 2.5 * 10^-17 J of light at a wavelength of 9.8 * 10^-7 m. How many photons does this correspond to?

3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposite surface at an angle of 900 to the normal. Calculate the i. angle of incidence. ii.