The current theory of the srtucture of the Earth, called pate tectonics , tells us that the continents are in constant motion. Assume that the North American continent can be reoresented by a slab of rock 5450 km on a side and 36 km deep and that the rock has an average mass density of 2790 kg/m^3. The continent in moving at the rate of about 3.2 cm/year. Part 1) What is the mass of the continent? Answer in untis of kg. Part 2) What is the kenetic energy of the continent? Answer in units of J. Part 3) A jogger (of a mass 79 kg) has the same kenetic energy as that of the continent. What would hos speed be? Answer in units of m/s.
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Physics, 21.06.2019 14:50, kalebbenton15
Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?
Answers: 2
Physics, 21.06.2019 22:10, edjiejwi
Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.
Answers: 3
Physics, 22.06.2019 03:30, hannahbaak
Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s. a. determine jay’s mass. b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)
Answers: 1
The current theory of the srtucture of the Earth, called pate tectonics , tells us that the continen...
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