Who thinks there is a 9th planet (not counting Pluto) and tell me why

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.

Three blocks are shown: Block A has mass 3 kilograms, length 8 centimeters, height 2 centimeters, and width 1 centimeters. Block B has mass 4 kilograms, length 1 centimeters, height 8 centimeters, and width 2 centimeters.

A car is travelling down a straight road. The driver presses on the accelerator but the car does not change speed. How is this possible?

What type of front occurs when cold air and warm air are next to each other, but are at a standstill? A. occluded front B. stationary front C. warm front D. cold front

Define mechanics and describe its three major divisions

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.

What type of intermolecular forces would you expect to find in a pure liquid sample of carbon tetrachloride?

Describe how rockets lift off.