Physics, 21.04.2021 23:00 mylittleponeyfbrarit
Pi] A car's engine produces a useful output power of 6.5 10° W
The car of mass 950 kg is moving up a hill at a steady speed.
The slope of the hill is 12° to the horizontal. Resistive forces on the car are negligible.
1?
What is the steady speed of the car? rk
[1 mark]
A 7.0ms7 [e]
B 12ms7 [e]
Cc 34ms7 [=]
D 68ms7 [e]
Answers: 1
Physics, 21.06.2019 18:10
Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.
Answers: 1
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Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.
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Physics, 22.06.2019 15:40
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Physics, 22.06.2019 16:00
At what time will the interfering waves have an amplitudeof zero?
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Pi] A car's engine produces a useful output power of 6.5 10° W
The car of mass 950 kg is moving up...
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