What 3 things can happen when light hits an object

A 15 m ladder with a mass of 51 kg is leaning against a frictionless wall, which makes an angle of 60 degrees with the horizontal. What is the horizontal force exerted by the ground on the ladder when an 81 kg object is 4.0 m from the bottom?

How does bare soil surface type affect the amount of runoff?

What is the speed, in terms of c, of an electromagnetic wave moving through a medium with an index of refraction of 1.27? A 0.79 c B 0.63 c C 0.24 c D 0.27 c

The velocity of sound in air saturated with water vapour at 30°C is 340 m/s. If the atmospheric pressure is 65cm of mercury and saturated vapour pressure of water at 30°C is 31.7 mm of mercury. Calculate the velocity of sound in dry air at 0°C.

In a frictionless environment, which energy stays the same? 1. Kinetic Energy 2. Potential Energy 3. Internal Energy 4. Total Mechanical Energy

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.