Physics, 26.03.2020 23:44 pattydixon6
John Lester is at the park practicing his pitching. Since he doesn’t have a catcher, John wants to pitch the ball all the way around the Earth so he can catch it himself. Neglecting air drag and any obstacles that might be in the way, about how fast must the ball be moving? You may take the radius of the Earth to be 6400 km.
Answers: 2
Physics, 21.06.2019 22:30
The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
Answers: 2
Physics, 22.06.2019 09:00
What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.
Answers: 2
Physics, 22.06.2019 10:00
Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?
Answers: 2
John Lester is at the park practicing his pitching. Since he doesn’t have a catcher, John wants to p...
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