Physics, 14.04.2020 20:30 annagracedavis2002
A 113 kg man sits on the stern of a 6.3 m long boat. The prow of the
boat touches the pier, but the boat isn’t tied. The man notices his
mistake, stands up and walks to the boat’s prow, but by the time he
reaches the prow, it’s moved 3.26 m away from the pier. Assuming no
water resistance to the boat’s motion, calculate the boat’s mass (not
counting the man).
Answers: 1
Physics, 21.06.2019 20:30
Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc
Answers: 3
Physics, 22.06.2019 00:30
Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.
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Physics, 22.06.2019 01:30
The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection
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Physics, 22.06.2019 08:00
5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.
Answers: 3
A 113 kg man sits on the stern of a 6.3 m long boat. The prow of the
boat touches the pier, b...
boat touches the pier, b...
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