Physics, 19.03.2021 18:10 Peachyyyyyy24
You serve a volleyball with a mass of 3.5 kg. The ball leaves your hand with a speed of 15 m/s. The ball has kinetic energy. Calculate it.
393.75 J
514.5 J
26.25 J
689.06 J
Answers: 3
Physics, 22.06.2019 16:30
The ph is the a.independent variable b.the dependent variable c.control group
Answers: 1
Physics, 22.06.2019 16:30
Select all the correct answers. which three statements about electromagnetic radiation are true?
Answers: 3
Physics, 22.06.2019 23:40
To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.
Answers: 2
Physics, 23.06.2019 09:30
Lake happy times contains 100 km3 of pure water. it is fed by a river at a rate of 50 km3/yr. at time zero, there is a factory on one shore of lake happy times that begins introducing a pollutant to the lake at a rate of 2km3/yr. there is another river that is fed by lake happy times at a rate that keeps the volume of lake happy times constant. this means that the rate of flow from lake happy times into the outlet river is 52km3/yr. in turn, the flow from this outlet river goes into another lake, lake sad times, at an equal rate. finally, there is an outlet river from lake sad times flowing at a rate that keeps the volume of lake sad times at a constant 100 km3 . (a) find the amount of pollutant in lake sad times at the end of 3 months. (b) at the end of 3 months, observers close the factory due to environmental concerns and no further pollu- tant enters lake happy times. how long will it take for the pollutant in lake sad times (found in part (a)) to be cut in half?
Answers: 3
You serve a volleyball with a mass of 3.5 kg. The ball leaves your hand with a speed of 15 m/s. The...
Mathematics, 05.01.2021 06:30
Mathematics, 05.01.2021 06:30
Mathematics, 05.01.2021 06:30
Spanish, 05.01.2021 06:30
English, 05.01.2021 06:30
English, 05.01.2021 06:30
English, 05.01.2021 06:30
Mathematics, 05.01.2021 06:30
English, 05.01.2021 06:30
History, 05.01.2021 06:30
Mathematics, 05.01.2021 06:30