Physics, 18.03.2021 21:50 shahedalahmad2017
5. A wheelbarrow contains two simple machines—a lever and a wheel and axle. For a certain
wheelbarrow, the lever has an efficiency of 72 percent, and the wheel and axle has an efficiency
of 64 percent. What is the overall efficiency of the wheelbarrow?
Answers: 2
Physics, 21.06.2019 23:10
6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.
Answers: 2
Physics, 22.06.2019 14:00
Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car
Answers: 1
Physics, 23.06.2019 02:00
How is an electron dot structure used to represent a covalent bond?
Answers: 2
Physics, 23.06.2019 11:00
An astronaut on the moon throws a baseball upward. the asatronaut is 6ft, 6in. tall, and the initial velocity of the ball is 30ft per second. the heigh s of the ball in feet is given by the equation s = -2.7^2 + 30t + 6.5, where t is the number of seconds after the ball was thrown. after how many seconds is the ball 16ft above the moon's surface?
Answers: 2
5. A wheelbarrow contains two simple machines—a lever and a wheel and axle. For a certain
wheelbarr...
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