State the magnitude and direction of the total force on the object (puck, car, ball, and boat

If the car were being moved sideways, could you determine the force on the car by using the weight equation

The weight of an apple at 4r from earth is of that on earth

An ice sheet 5m thick covers a lake that is 20m deep. what is the temperature of the water at the bottom of the lake? explain your answer. coefficient of volume expansivity at 20 degree centigrade is 2.1x10^-4

Which of these is a good example of Newton's First Law of inertia

10) T F Two unequal weights are connected by a massless string which passes over a frictionless pulley.

What is the critical angle θcrit for light propagating from a material with index of refraction of 1.50 to a material with index of refraction of 1.00? express your answer in radians?

Which of these could NOT be used to find the mechanical advantage of an inclined plane? A. input force B. output force C. percent efficiency D. length and height of inclined plane

What are the Rules of magnetism

Two spheres of the same radius, but of different masses, are both fully submerged in water. The lighter sphere is held below the water line by a rope anchored to the bottom of the container. The heavier sphere is suspended from a rope.

How does an increase in thermal energy affect molecules?