Physics, 27.02.2020 05:18 zanaplen27
A 21 g ball is shot from a spring gun whose spring has a force constant of 579 N/m. The spring can be compressed 1 cm. How high will the ball go if the gun is aimed vertically? The acceleration of gravity is 9.81 m/s 2 . Assume that at the end of the barrel, the spring’s displacement and the ball’s height are each zero
Answers: 2
Physics, 22.06.2019 08:30
Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.
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Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Physics, 23.06.2019 03:10
2. which of the following devices is associated with the reception of radio signals? o a. demodulator o b. transmitting antenna o c. oscillator o d. microphone
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Physics, 23.06.2019 05:20
6. an article, which costs rs. 850 is sold at a profit of 6%.what is the selling price ? -a) rs.900 b) rs. 901 c) rs. 890 d) rs. 905
Answers: 1
A 21 g ball is shot from a spring gun whose spring has a force constant of 579 N/m. The spring can b...
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