A chemical is one or two letter used to represent an element

What is the basis for rutherford's planetary model?

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 93.5 kg. The mass of the rock is 0.310 kg.

A 4 kg block slides down a rough inclined plane inclined at 30° 179009. GIF with the horizontal. Determine the coefficient of kinetic friction between the block and the surface if the block has an acceleration of 1.2 m/s2.

Why is it important to understand the behavior of light when designing and building any type of structure, such as a house, school, store, hospital or office building?

Why are most large astromical telescopes reflecting telescopes rather than refracting telescopes?

A basketball player jumps straight up for a ball. To do this, he lowers his body 0.260 m and then accelerates through this distance by forcefully straightening his legs. This player leaves the floor with a vertical velocity sufficient to carry him 0.

Why does Mars have moons even when its mass is small?

During the forging process for a steel sword, the blacksmith places a hot iron blank into a cold bucket of water. Which of the following happens? A. The water molecules move faster. B. The steel molecules move faster. C.

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?

What are copper atoms held together by