Physics Quiz Problems on Rivets, Coffee Pot, and Electric Charges
Solve challenging physics problems involving rivet cooling for a secure fit, coffee pot boiling time calculation, and electric charges on a square. The problems cover concepts such as thermal expansion, heat transfer, and electrostatic forces. Put your physics knowledge to the test with these thought-provoking questions.
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Quiz 1 PHYS212
Chapter 17-Problem 13 13. (II) To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole. A steel rivet 1.872 cm in diameter is to be placed in a hole 1.870 cm in diameter in a metal at 20 C. To what temperature must the rivet be cooled if it is to fit in the hole?
Chapter 19-Problem 11 11. (II) How long does it take a 750-W coffeepot to bring to a boil 0.75 L of water initially at 8.0 C? Assume that the part of the pot which is heated with the water is made of 280 g of aluminum, and that no water boils away.
Chapter 21-Problem 16 16. (II) Two negative and two positive point charges (magnitude Q=4.15mC) are placed on opposite corners of a square as shown in Fig. 21 54. Determine the magnitude and direction of the force on the charge at the top right of the square.
