Objects with masses of 281 kg and 676 kg are separated by 0.43 m. A 41.4 kg mass is
placed midway between them.
Find the magnitude of the net gravitational
force exerted by the two larger masses on the
41.4 kg mass. The value of the universal gravitational constant is 6.672 × 10−11 N · m2
/kg2
.
Answer in units of N.
017 (part 2 of 2) 10.0 points
Leaving the distance between the 281 kg and
the 676 kg masses fixed, at what distance from
the 676 kg mass (other than infinitely remote
ones) does the 41.4 kg mass experience a net
force of zero?
Answer in units of m.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?