The mass of a newborn baby is 3.5 kg. Which solution solves for the force of the Earth on the baby? Fe = gem N -9.8 (3.5 kg) FE = (-9 M( ) = Fe = -34.3N Fe = gem N 3.5 kg = () -9.8 m kg m m 3.5 kg 9.8 N/kg 0.36 kg Fe = gem -9.8 N = g(3.5kg) -9.8 N 9(3.5kg) 3.5 kg 3.5 kg g= -2.8 N/kg FE = GEM N -9.8 (3.5kg) kg FE 34.3 N F:- () 1

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%

Six pendulums of mass mand length las shown are released from rest at the same angle theta from vertical. rank the pendulums according to the numberof complete cycles of motion each pendulum goes through perminute. a. l= 1m m=2kg b. l= 4m m=1 kg c. l= 2 m m= 2 kg d. l= 1 m m= 4 kg e. l= 2 m m = 4 kg f. l= 4m m = 4kg