A substance through which a wave can travel

What are the two major types of ortical telescopes

A football is kicked at ground level with the speed of 32 m/s at an angle of 40 degrees to the horizontal. how much later does it hit the ground?

Consider two planets A and B. The mass of planet B is 0.012 times the mass of planet A and its radius is 0.3 times the radius of planet A. If the acceleration due to gravity at the planet A is 10 m/s2, calculate the corresponding value at planet B.

For safety reasons, a worker's eye travel time in a certain operation must be separated from the manual elements that follow. The distance the worker's eyes must travel is 20 in.

The most frequent compulsion that is exhibited in obsessive-compulsive disorder is

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?