A 10 kg block is hanging from 2 ropes. One exerts a 50 N force at a 15* angle to the horizontal. The other exerts 9 80/ force at a 60* angle to the horizontal. Find the magnitude and direction of the force that will bring the block into equilibrium. 159.3N, 85 4' South of east Q 180.41N, 87.4" South of east Q 135.7N, 85 3' South of east Q 148.2N, 93 4' South of east Find the acceleration due to gravily near the surface of a planet whose radius is four times the earth's radius and whose mass is 90 times the mass of the earth? O 55.1m/s2 0 43.7m/s2 0 37.9m/s2 O 87.6m/s2 A string of length 5 m is held fixed at x - 0 m while a machine at x - 5 m vibrates the other end at an unknown frequency creating a standing wave pattern. If the speed of a wave on the string is measured to be 15 m/ s. what is the fundamental frequency of the wave? O 2.7Hz O 3.85Hz O 1.83Hz O 1.5Hz