What is energy efficiency

Which metal would cause the greatest increase in the temperature of the water in the calorimeter: the one with the highest specific heat, or the one with the lower specific heat?

An imaginary lines which cuts earth half horizontally

Friction between two flat surfaces can be divided into two categories. What are the two most common kinds of friction? Air resistance Fluid Static Kinetic

The coordinates 40 degrees north and 100 degrees east falls in what country?

Which does not contain a lens? A. binoculars B. an eye C. a mirror D. a camera

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?

A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?

an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball