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The "hang time" of a punt is measured to be 4.50 s. If the ball was kicked at an angle of 63 degrees above the horizontal and was caught at the same level from which it was kicked, what was its initial speed?
Two circuits contain an emf produced by a moving metal rod, like that shown. The speed of the rod is the same in each circuit, other than the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
A64-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. How fast is the astronaut moving after he throws the mallet
Equipotential surface A has a potential of 5650 V, while equipotential surface B has a potential of 7850 V. How much work is done by the outside force in moving the particle from A to B
A ship sets out to sail to a point 148 km due north. An unexpected storm blows the ship to a point 148 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive angl..
The far point of an eye is 145 cm. A corrective lens is to be used to allow this eye to focus clearly on objects a great distance away. What is the power of the needed corrective lens in diopters
q1. an airplane is flying with a velocity of 83.0 at an angle of 22.0 above the horizontal. when the plane is a
A baseball player hits a ball at 49.2m/s at an angle of 29.0 degrees above the horizontal. The outfield bleachers are 145 m away from the home plate.
A truck has its front wheels (only) driven onto a scale and a reading of 3000 kg is obtained. How far is the center of gravity from the front wheels
A heavy-duty stapling gun uses a 0.131-kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 31800 N/m).
A flywheel comprises a uniform circular disk with a moment of inertia of 5.70×101 Kg m2. What energy (in Joules) must this force dissipate to stop the wheel
In an advanced laboratory class a student performs the photoelectric experiment. Ultraviolet light is shone on a particular metal and the stopping potential is measured at the same time. What is Planck's constant based on this measurement
A 0.25 m segment of wire lies along the x-axis and carries a current of 4.7 A in the negative x direction. What is the force (magnitude and direction) on the segment of wire
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