Question 4 (2 points) A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is _N. (Give your answer with g giggs, and do not include units) [:~ Question 3 (2 points) The earth's orbital radius is 1.49x1011m and its period of revolution around the sun is 1.00 years. If Mercury has an orbital radius around the sun of 5.79x1010m, its period of revolution is years. (Give your answer with the correct number of sig digs and do not include units). Question 4 (2 points) The earth's orbital radius is 1.49x1011m and its period of revolution around the sun is 1.00 years. If Venus has an orbital period of 224.? days its orbital radius is x1011m. (Give your answer with the correct number of sig digs and do not include units). [l'v Question 3 (2 points) For a satellite to have a speed of 7400 mls, it must be _)(105 m above the earth surface. (Give your answer with g gigggs and do not include units) ~ Question 4 (2 points) A satellite is located 450 km above the surface of the Earth. It would take the satellite _x103 3 to complete one orbit of the Earth. (Give your answer with ggs and do not include units) ~ Question 1 (2 points) A 60.0-kg student runs at a constant velocity up a flight of stairs. If the vertical distance of the stairs is 3.2 m, the work done against gravity is _x103 J (Give your answer with the correct number of sig digs and do not include units). :l'v Use the information below to answer the following 4 questions. A 10.0-kg object is accelerated horizontally from rest to a velocity of 11.0 mis in 5.00 s by a horizontal force. Question 2 (1 point) The acceleration of the object is _m/sz. (Give your answer with ggs and do not include units). - Question 3 (1 point) The horizontal force given to the object is _N. (Give your answer with ggs and do not include units). - Question 4 (1 point) The distance travelled by the object is _m. (Give your answer with gggg and do not include units). - Question 5 (1 point) The work done on the object is _J. (Give your answer with ggg and do not include units). :w Question 6 (2 points) A 90.0-N box is pulled 10.0 m along a level surface by a rope. If the rope makes an angle of 20.0\" with the surface, and the force exerted through the rope is 75.0 N, the work is done on the box is _J. (Give your answer with the correct number of sig digs and do not include units) 'v Question 7 (2 points) A 25.0-N object is held 2.10 m above the ground. The potential energy of the object with respect to the ground is _J. (Give your answer with the correct number of significant digits and do not include units). AJ Question 8 (2 points) The kinetic energy of a 20.0-N object is 5.00 x 102 J. The speed of this object is _mls. (Give your answer with the correct number of sig digs and do not include units). ex Question 9 (2 points) A 10.0-N object is accelerated uniformly from rest at a rate of 2.5 mlsz. The kinetic energy of this object after it has accelerated a distance of 15.0 m is _J. (Give your answer with the correct number of sig digs and do not include units). ~