What is the amount of force required to lift an object against the force of gravity equal to?

Which of the following is true about radio waves? they have short wave lengths they can penetrate dust clouds they have high energies they reveal hot gasses

What particles are responsible for nearly all the mass of an atom?

Which of the following is the cause of the change of seasons? A) the distance of a place from the Equator B) prevailing winds blowing across land or water C) the tilt of the Earth's axis D) the rotation of the Earth

If the absolute pressure of a gas is 550.280 kPa, its gage pressure is a. 101.325 kPa. b. 448.955 kPa. c. 651.605 kPa. d. 277.280 kPa.

Convection currents within Earth's core and mantle transfer large amounts of heat when a. hotter, less dense rock rises and cooler, more dense rock sinks b. cooler, less dense rock sinks and hotter, more dense rock rises c.

How does a bicycle rider's energy of motion changes as the gain speed while riding down a hill? Options: A) It is lost. B) It increases. C) It remains the same. D) It is stored in the bicycle rider.

When is a sailboat the stand on vessel in relations to a recreational power boat?

What happens when a balloon is rubbed with a woollen cloth?

A child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate? (hint: draw a free-body diagram for each object.)

Which wavelengths of light is the highest in energy?