On a particular roller coaster there is a loop with a radius of 19 meters. If it takes you 5.8 seconds to make the loop in your 390 kg cart, what is the centripetal force acting on your cart?
About 3830 N
About 8690 N
About 28500 N
About 8020 N

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

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

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=