A roller coaster car rapidly picks up speed as it rolls down a slope. as it starts down the slope, its speed is 4 m/s. But 3 seconds later, its speed is 22m/s. what is its average acceleration?

What is the relationship between power and current?

10) Two students want to use a 12-meter long rope to create standing waves. They first measure the speed at which a single wave pulse moves from one end of the rope to another and find that it is 36 m/s.

The angle between incident ray and reflected ray is 80 degrees. What is the value of angle of incidence?

Which would be best categorized as heat transfer by conduction? a) wearing a white shirt to stay cool on a summer day. b) cooling a burn on your hand by running your hand under cold water.

It is generally a good idea to gain an understanding of the "size" of units. Consider the objects listed and calculate the magnitude of their momentum in SI units. A ladybug weighing 31.80 mg flies by your head at 2.53 mi/h.

What besides mass and gravity, what other factor affects gravitational potential energy?

A satellite is in a circular orbit about the Earth at a distance of one Earth radius above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 * 106 m, and G = 6.67 * 10-11 N⋅m 2 / kg2.)

What is the meaning of the washing motion of the younger monk? is it the same when dobbins does it?

A teacher pulls a box of books on a horizontal floor with a force of 290 N directed 40.9 degrese above the horizontal. the coefficiant of kinetic friction between the box and the floor is 0.184. the mass of the box and books is 44.5 kg.

The dark colored belts on jupiter are brighter than the surrounding regions and the light colored zones when viewed in infrared or heat radiation because