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A boy rubs two balloons against his sweater. One balloon acquires a charge of 3.0 E -6 C. The other balloon acquires a charge of 2.5 E -7 C. If the balloons are positioned 1 cm apart, what is the electrical force between them? Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of signicant digits to receive full credit. (3 points) A scared elephant has a mass of 7000 kg. The mouse that frightened the elephant is 0.02 kg. The distance between the elephant and the mouse is 1 meter. a. How much gravitational force does the elephant exert on the mouse? b. How much gravitational force does the mouse exert on the elephant? Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of signicant digits to receive full credit. (3 points) A 25 N object requires a 5.0 N force to start moving over a horizontal surface. What is the coefficient of static friction? (2 points)Remember to include your data, equation, and work when solving this problem. The moon has a mass of 7.35 E 22 kg and is located 3.84 E 8 meters from the Earth. If Ellen, an earthling, has a mass of 47 kg, what is the gravitational force between Ellen and the moon? (5 points) -. Remember to include your data, equation, and work when solving this problem. A 20.0 kg mass moving at a velocity of + 3.0 m/s is stopped by a constant force of 15.0 N. How many seconds must the force act on the mass to stop it? (5 points)