Aball is thrown vertically upward. a. what happens to the ball's velocity while the ball is in the air? b. what is its velocity when it reaches its maximum altitude? c. what is its acceleration when it reaches its maximum altitude? d. what is its acceleration just before it hits the ground? e. does its acceleration increase, decrease, or remain constant?
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Physics, 21.06.2019 21:30
The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output
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Physics, 22.06.2019 06:30
What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34
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Physics, 22.06.2019 18:10
Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
Physics, 22.06.2019 20:30
The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?
Answers: 2
Aball is thrown vertically upward. a. what happens to the ball's velocity while the ball is in the a...
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