State 2 defects of primary cells

What is the number of protons in the nucleus of an element called?

Ways to find instantaneous velocity

Explain how a compass works

A car of mass m=1000kg is traveling at speed v and brakes. The skid marks are 20m long and the coefficient of kinetic friction is. 5. Find the speed v in m/s and in mph. How would your answer change if the mass of the car were 2000kg?

Newton's third law says that for every action force there is a reaction force which is

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.