Physics, 18.12.2019 21:31 alexkrol10
Dante is leading a parade across the main street in front of city hall. starting at city hall, he marches the parade 4 blocks east, then 3 blocks south. from there, the parade marches 1 block west and 9 blocks north and finally stops. what is the vector displacement and direction of the the parade, starting from the city hall and the stopping point?
displacement: 6.71 m, direction: 63.4 degrees north of east
displacement: 8.01 m, direction: 21.9 degrees north of east
displacement: 2.56 m, direction: 39.7 degrees north of east
displacement: 4.31 m, direction: 88.1 degrees north of east
Answers: 2
Physics, 22.06.2019 17:30
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Physics, 22.06.2019 22:00
A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?
Answers: 2
Physics, 22.06.2019 23:00
Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
Dante is leading a parade across the main street in front of city hall. starting at city hall, he ma...
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