Physics, 09.12.2021 04:10 hamilclips6805
An ice skater, of mass m, is given a push on a frozen lake. After the push, he has an initial speed of 2 m/s. Assuming the only horizontal force that acts on him is a slight frictional force between the blades of the skates and the ice. Draw a free body diagrams showing the horizontal and vertical forces. Identify those forces.
Answers: 1
Physics, 22.06.2019 11:00
Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.
Answers: 3
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
An ice skater, of mass m, is given a push on a frozen lake. After the push, he has an initial speed...
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