On a roller coaster, describe the kinetic and potential energy of the car at the top of the first hill, the bottom of the first drop, and later in the ride. what effect does the friction have on the car throughout the ride?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal