Physics, 25.03.2020 05:01 mettababeeeee
Suppose a power plant produces 1 GW of electricity at 40% efficiency, taking in steam at a temperature of 500◦ C. The waste heat is expelled into the environment at 20◦ C. At what rate (in watts) is heat expelled into the environment?
Answers: 2
Physics, 21.06.2019 19:20, Spoilmom7231
Describe the path of the electric current through a circuit?
Answers: 1
Physics, 22.06.2019 12:30, olsen6932
As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?
Answers: 1
Physics, 22.06.2019 14:10, nikki4367
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
Suppose a power plant produces 1 GW of electricity at 40% efficiency, taking in steam at a temperatu...
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