Physics, 21.07.2019 23:30 Amholloway13
Which are advantages of using a reflecting telescope instead of a refracting telescope? check all that apply. a) reflecting telescopes are less expensive. b) reflecting telescopes produce clearer images. c) reflecting telescopes require only concave lenses. d) reflecting telescopes can gather light from objects farther in space. e) reflecting telescopes usually take up less space.
Answers: 1
Physics, 22.06.2019 13:40
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
Physics, 23.06.2019 04:31
Water flows through a garden hose which is attached to a nozzle. the water flows through hose with a speed of 2.19 m/s and through the nozzle with a speed of 19.8 m/s. calculate the maximum height (in m) to which water could be squirted if it emerges from the nozzle and emerges with the nozzle removed.
Answers: 1
Physics, 23.06.2019 08:30
List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.
Answers: 2
Physics, 23.06.2019 08:30
What is the electric potential at a distance of 1.2 m from a 7.5 µc point charge? 5.6 × 104 v 8.1 × 104 v 5.6 × 1010 v 8.1 × 1010 v
Answers: 1
Which are advantages of using a reflecting telescope instead of a refracting telescope? check all t...
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