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You throw a ball from the balcony onto the court in the basketball arena. You release the ball at a height of 6 m above the court, with an initial velocity equal to 9 m/s at 33° above the horizontal. A friend of yours, standing on the court 10 m from the point directly beneath you, waits for a period of time after you release the ball and then begins to move directly away from you at an acceleration of 3 m/s2. (She can only do this for a short period of time!) If you throw the ball in a line with her, how long after you release the ball should she wait to start running directly away from you so that she'll catch the ball exactly 1 m above the floor of the court?
A dielectric-filled parallel-plate capacitor has plate area of 30cm^2 and plate separation of 5mm. The capacitor is connected to a battery that creates a constant voltage of 10V. The dielectric constant is 3. All through the problem, use epsilon_0..
A solid cube of mass 40kg and edge length .30mrests on a horizontal floor. A person then pushes on the upper edgeof the cube with a horizontal force of magnitude F. At what valueof F will the cube start to tip? Assume the frictional force fromthe flo..
calculate the allowable internal design pressure at 72 design factor for an 18 in. pipeline wall thickness 0.375 in.
A 110kg clock initially at rest on a horizontal floor requires a 607N horizontal force to set it in motion. After the clock is in motion, horizontal force of 525 N keeps it moving with a constant velocity.
A hanging wire made of an alloy of iron with diameter 0.1 cm is initially 2.1 m long and a cubic atomic structure. Find the approximate value of the effective spring stiffness of one interatomic bond in iron
A person pushes a 16.0 kg shopping cart at a constant velocity for a distance of 18.0 m. What is the magnitude of the force that the shopper exerts
A 225-m length of wire stretches between two towers and carries a 180-A current. Determine the magnitude of the force on the wire due to the Earth's magnetic field
A spaceship ferrying workers to Moon Base I takes a straight-linepath from the earth to the moon, a distance of384000 {\rm km}. what total time is required for the trip
Monochromatic light is incident on a soap fil (n=1.4) from air (n=1.0). What is the appearance of the film in reflected light as the thickness of the film approaches zero
question what is the smallest temperature change that can be reliably detected using a bridge- thermistor circuit? how
a 20.0 gram bullet is shot horizontally into a 2.00 kg block and quickly becomes imbedded in the block. after the
the relatively high resistivity of dry skin about 1 x 106 ohms - m can safely limit the flow of current into deeper
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