Answers: 3
Physics, 21.06.2019 22:40
Um vetor representa um deslocamento cujo mΓ³dulo Γ© 20 m. se v faz um Γ’ngulo de 60 graus com a horizontal, qual Γ© o valor das componentes horizontal e vertical deste vetor?
Answers: 2
Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
Physics, 22.06.2019 19:50
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 Γ 10-6 ΟΒ·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 Β’ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to itβs resistivity when at operating temperature? explain.
Answers: 3
Physics, 23.06.2019 02:00
If a nissan titan has a mass of 2,300 kilograms how many grams is that
Answers: 1
force of 200N is applied the coefficients of friction are k=0.15 and a s=0.27, what is the mass of t...
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