Physics, 02.07.2019 08:00 jordan2875
The current theory of the structure of the earth, called plate tectonics, tells us what the continents are in constant motion. assume that the north american continent can be represented by a slab of rock 4700km on a side and 37km deep and that the rock has an average mass density of 2720kg/m^3. the continent is moving at the rate of about 4.6cm/year. a) what is the mass of the continent. b) what is the kinetic energy of the continent?
Answers: 1
Physics, 21.06.2019 19:40
You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j
Answers: 2
Physics, 22.06.2019 02:30
You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a
Answers: 1
Physics, 22.06.2019 12:30
An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
Answers: 2
Physics, 22.06.2019 13:10
The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.
Answers: 3
The current theory of the structure of the earth, called plate tectonics, tells us what the continen...
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