Physics, 15.04.2020 03:03 liyahguyton
During your winter vacation, you enter a "dogsled" race across a frictionless frozen lake, in which the sleds are pulled by students instead of dogs. To get started, you pull the sled (mass m=50 kg) with a force of F=100 N at θ = 30o above the horizontal. The sled moves S = 30.0 m, starting from rest. Assume that there is no friction. (1) What is the final kinetic energy of your sled? (select the closest values)
Answers: 1
Physics, 22.06.2019 14:30
Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity
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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, 23.06.2019 00:10
An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station
Answers: 1
During your winter vacation, you enter a "dogsled" race across a frictionless frozen lake, in which...
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