A boy can raise a rock that weighs 95N by using a lever and applying force of 15N what is the mechanical advantage of the lever

A 300 mm diameter well with a screen length 20 m is to be placed in an aquifer of thickness 40 m. a) Calculate the specific capacity of this well as percent of the maximum (full penetration).

A 12-volt car battery pushes a charge through the headlight circuit with a resistance of 8.5 ohms. How much current is passing through the circuit?

The purple arrow shows speed and direction of the ball. This arrow is called what?

What does the object that gives up electrons become

What happens to the volume of a gas during compression?

A 1200 kg car moving at 7.8 m/s collides with a stationary car of mass 1500 kg. if the two vehicles lock together, what is their combined velocity immediately after the collision?

Which have more kinetic energy a 100g ball, a 200g ball, or a 500g ball explain

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection.

Fleas often live on dogs or cats and bite them for meal of blood. This can be harmful to the cat or dog that is bitten. What type of symbiotic relationship is that?

Who was the scientist that discovered Pluto wasnt a planet