Physics, 20.03.2021 23:40 NathanaelLopez
18. Uma bola está em repouso na marca do pênalti quando um jogador, ao chutá-la, aplica uma força F, fazendo-a sair com uma velocidade de 108 km/h . Sabendo que a bola tem massa de 600 g e que a duração do contato do pé do joga e dor com a bola foi de 2.0 * 10 ^ - 3 , calcule, em unidades SI: bola v = 108 km/h a) o módulo da aceleração média adquirida pela bola; b) a intensidade da força média trocada entre o pé do jogador e a bola.
Answers: 1
Physics, 22.06.2019 06:00
When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.
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Physics, 22.06.2019 13:30
The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.
Answers: 2
Physics, 22.06.2019 15:20
Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
Answers: 2
Physics, 22.06.2019 15:50
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
18. Uma bola está em repouso na marca do pênalti quando um jogador, ao chutá-la, aplica uma força F,...
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