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A missile launcher, of mass 4400 kg, fires horizontally a rocket of mass 100 kg and recoils up a smooth inclined plane, rising to height of 4.0 m. discover the initial speed of the rocket.
Some amusement park rides move you back and forth in the horizontal direction. Why is this motion so much more disturbing to your body than cruising at a high speed in a jet airplane.
Forces of 83 N east, 63 N north, 30 N south, 41 N west aresimultaneously applied to a box of mass 10.9 kg. Find the magnitude of the box's acceleration
The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0 10-10 m is 8.28 10-9 N. What is the charge of each ion
The atomic masses of two isotopes of cobalt are 59 and 60. What is the number of orbiting electrons in each when the isotopes areelectrically neutral
A 6.9 cm diameter loop of wire is initiallyoriented perpendicular to a 1.4 T magnetic field. The loop is rotated so thatits plane is parallel to the field directionin 0.30 s.
in constructing a large mobile an artist hangs an aluminum sphere of mass 5.5 from a vertical steel wire 0.46 long and
Two 480 V (rms) loads are connected in parallel. The two loads draw a total average power of 40,800 W at a power factor of 0.8 lagging. What is the power factor of the other load
A spring system consists of a stationary spring and a 100-gram mass attached to one end that slides along a horizontal frictionless surface, How much total energy is in the spring
a sleigh slides down a snowy incline 15deg to the horizontal with coefficient of kinetic friction microk 0.21. a find
at a mail sorting facility packages slide down a ramp but are stopped part way down the ramp so that they can be
An FM radio station broadcasts at a frequency of 92.4 MHz. Thepower radiated from the antenna is 68 kW. In one second, how many photons does the antenna emit
A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend spins the front wheel, of radius 0.335 m, and observes that drops of water fly off tangentially in an upward direction when the drops are at the same l..
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