Physics, 27.08.2020 04:01 WindelCaceus123
Ao bater um tiro de meta, um goleiro imprime à bola uma velocidade de módulo V 0 = 30 m/s inclinada de um ângulo α com a horizontal, tal que sen α = 0,8 e cos α = 0,6. Admita que no local a resistência do ar seja desprezível e adote g = 10 m/s 2 . Supondo que a bola retorne ao solo sem ser interceptada por qualquer jogador, determine: a) a altura máxima (H) atingida por ela; b) a velocidade da bola no ápice do vôo; c) o seu tempo total de vôo ; d) o seu alcance horizontal.
Answers: 3
Physics, 22.06.2019 12:00, jazz8224
The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
Answers: 3
Physics, 22.06.2019 15:20, avree4722
Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.
Answers: 3
Ao bater um tiro de meta, um goleiro imprime à bola uma velocidade de módulo V 0 = 30 m/s inclinada...
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