Physics, 31.01.2020 23:04 fortwill05
90 points whats the equation for how fast something will be traveling before it hits the ground. how to do the equation explain here is an example problem
a 0.05 kg-coin is dropped from the top of a skyscraper that is 100 meters high. how fast is the coin traveling just before it hits the ground?
use gpe=m*g*h
ke= 0.5*mass *velocity squared
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Physics, 22.06.2019 06:30
=force × distance a. work b. velocity c. pressure d. momentum
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Physics, 22.06.2019 18:00
Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.
Answers: 1
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
90 points whats the equation for how fast something will be traveling before it hits the ground. how...
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