What is friction caused by?

A light wave will * Blank * if it enters a new medium perpendicular to the surface.

A 5 kg fish swimming at 1 m/s swallows an absentminded 500 g fish swimming toward it at a veloc - ity that brings both fish to a halt immediately after lunch. What is the velocity of the approaching smaller fish before lunch?

An object is moving in a straight line with constant acceleration a) its acceleration start increasing at some rate than b) velocity will start decreasing c) its velocity will keep on increasing d) its velocity will remain constant or objective is

Is putting something in a blender a physical or chemical change and how?

It takes about 200 N to push a vehicle on a flat road. How much energy do you need to expend to push this vehicle for 1 km? Show your calculations here:

The energy content of a certain food is to be determined in a bomb calorimeter that contains 3 kg of water by burning a 2-g sample of it in the presence of 100 g of air in the reaction chamber. If the water temperature rises by 3.

If one side of switch is open and another one closed so what gone happen

At t = 19.8 seconds an object with mass 2.0 kg was observed to have a velocity of m/s. At t=20.02 seconds its velocity was m/s. What was the average (vector) net force acting on the object?

How do you get over a break up? (I know this has nothing to do with school work but I really need some advice.)

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory A. Write a letter to the noble prize committee B. Do the same experiment over and over again C.