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A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.2 m/s at ground level. The engines then fire, and the rocket accelerates upward at 3.80 m/s2 until it reaches an altitude of 1190 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s2.
A runner travels 2 km north, then 1 km west, then 1 km north, then 3 km east. The run took 45 minutes. What was the total path length of the run
A solenoid inductor has an emf of 0.90V when the current through it changes at the rate 10.0 A/s. How many turns does the inductor have
A block of mass m = 3.40 kg is pushed a distance d = 2.30 m along a frictionless, Determine the work done by the net force on the block.
A 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. If the trampoline behaves like a spring of spring constant 6.2×104, how far does he depress it.
An astronomical telescope uses an objective power +2.00 D. If the length of the telescope is 52 cm, what is the focal length of the eyepiece
A current of 7.87 A in a solenoid of length 12.0 cm creates a 0.357-T magnetic field at the center of the solenoid
q1. a chair of weight 125 n lies atop a horizontal floor the floor is not frictionless. you push on the chair with a
q1. a certain compact disc player draws a current of 290 ma at 36.0 v. how much power is necessary to operate the
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. What is the surface charge density on the red blood cell
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. Coyote unsuccessfully tries to catch the very fast and clever Roadrunner. What is the momentum of the second wagon after the collision
a police officer in hot pursuit drives her car through a circular turn of radius 300m witha constant speed of 80.0km/h. what are the magnitude and the angle relative to vertical of the net force
Suppose that a small incandescent light bulb (R=2.88 kilo ohms) is connected to a standard European household AC electrical socket, Find the average power dissipated by the light bulb
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