Physics, 07.05.2021 20:40 skyvargasov9cad
A 1200 kg truck is moving to the right at a speed of 30 m/s. It hits another identical truck that was at rest. The two trucks stick together and move to the right at a speed of 15 m/s. Elastic: m1 v1B + m2 v2B = m1 v1A + m2 v2A Inelastic: mv1B + mv2B = (m1 + m2 ) Vf a. Is this an elastic or inelastic collidion b. What is the total momentum before the trucks collided with each other? c. What is the total momentum after the trucks collide with each other? Hint: be sure to add both masses then multiply by the velocity. d. Was momentum conserved and how do you know?
Answers: 1
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
Physics, 22.06.2019 05:20
A3.9 g aluminum foil ball with a charge of +4.1Ć10ā9 c is suspended on a string in a uniform horizontal eā field. the string deviates to the right and makes an angle of 30ā with the vertical. part a part complete what information about the eā field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of eā only the direction of eā both the magnitude and the direction of eā none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you
Answers: 3
Physics, 22.06.2019 05:30
Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
Answers: 1
Physics, 22.06.2019 10:30
Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
Answers: 3
A 1200 kg truck is moving to the right at a speed of 30 m/s. It hits another identical truck that wa...
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