Three forces that act on a roller coaster:

Gravity

Air Resistance

Inertia

Am I right?

A car travels over a dirt road that contains a series of equally spaced bumps (a so-called "washboard" road). While traveling at a given speed the driver experiences a very jarring ride.

When a gas is compressed in a cylinder fitted with a piston, the work done is 526 J. At the same time, 260. J of heat is released to the surroundings.

Calculate the de Broglie wavelength for (a) an electron with a kinetic energy of 100eV, (b) a proton with a kinetic energy of 100 eV, and (c) an electron in the first Bohr orbit of a hydrogen atom.

4. X-ray radiation from diffraction and fluorescence instruments is a) Not very dangerous because the X-rays are absorbed in the air b) Very dangerous but poses little real hazard since instruments are designed to completely enclose all beams c)

a beaker has mass of 125 g. what is the mass of liquid if the beaker plus liquid have a mass of 232 g?

a block of wood of mass 10kg and dimension 40cmx25cmx10cm is placed on a table top. find the pressure exerted if the box lies on the tabletop with sides of dimensions; a. 10cmx25cm b. 40cmx10cm

The cause of change in momentum is: change in inertia impulse change in force energy

Define Mechanical energy. Using an example of the pendulum, explain how kinetic and potential energy relate to the mechanical energy at different positions.

A 8 kilogram cat is resting on top of a bookshelf that is 2 meters high. What is the cat's gravitational potential energy relative to the floor?

A piece of wood has a volume of 4.6 cm to the power of 3, and a mass of 3.7 g what is the density of the wood