Physics, 01.07.2019 17:10 babydani11
Amodel rocket is launched straight upward with an initial speed of 57.0 m/s. it accelerates with a constant upward acceleration of 3.00 m/s2 until its engines stop at an altitude of 140 m. (a) what can you say about the motion of the rocket after its engines stop? this answer has not been graded yet. (b) what is the maximum height reached by the rocket? m (c) how long after liftoff does the rocket reach its maximum height? s (d) how long is the rocket in the air? s
Answers: 3
Physics, 21.06.2019 16:30
Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.
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Physics, 22.06.2019 23:30
The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?
Answers: 2
Physics, 23.06.2019 01:50
An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)
Answers: 2
Physics, 23.06.2019 03:00
The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.
Answers: 3
Amodel rocket is launched straight upward with an initial speed of 57.0 m/s. it accelerates with a c...
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