Physics, 25.06.2019 15:30, TianaTheSquid
Una esfera metálica de masa 5 g con carga + 3 c, se cuelga de un hilo y se le aproxima otra esfera con carga del mismo signo. cuando ambas están separadas 8 cm el ángulo que forma el hilo con la vertical es de 15° ¿cuál es la carga de la segunda esfera?
Answers: 2
Physics, 22.06.2019 15:00, koranbutterton
Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.
Answers: 3
Physics, 22.06.2019 23:30, china236
A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s
Answers: 1
Una esfera metálica de masa 5 g con carga + 3 c, se cuelga de un hilo y se le aproxima otra esfera c...
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