Physics, 15.04.2020 20:16, pastmarion
Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown. (Hint: show that $$K_i + U_i = K_f + U_f)$$
Answers: 2
Physics, 21.06.2019 20:20, jasminelynn135owmyj1
Suppose that a comet that was seen in 563 a. d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?
Answers: 1
Physics, 22.06.2019 00:50, Amandarobersonn
While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.
Answers: 3
Physics, 22.06.2019 02:30, itzyougirllona47
Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes
Answers: 2
Physics, 22.06.2019 04:00, Isaacochoa780
The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane
Answers: 2
Using energy considerations and assuming negligible air resistance, show that a rock thrown from a b...
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