In introductory physics laboratories, a typical cavendish balance for measuring the gravitational constant g uses lead spheres of masses 1.56 kg and 21.1 g whose centers are separated by 5.34 cm. calculate the gravitational force between these spheres, treating each as a point mass located at the center of the sphere. the value of the universal gravitational constant is 6.67259 × 10−11 n · m2 /kg2 .

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.