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A physics book slides off a horizontal tabletop with a speed of 2.70 . It strikes the floor in 0.350 . Ignore air resistance.
a) Find the horizontal component of the book's velocity, just before the book reaches the floor.
b) Find the vertical component of the book's velocity just before the book reaches the floor.
C) Find the magnitude of book's velocity, just before the book reaches the floor.
D) Find the direction of book's velocity, just before the book reaches the floor.
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
In the Bohr model of hydrogen, the electron moves in a circular orbit around the nucleus. Determine the angular speed of the electron
A jet flying at 125 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. How far apart are the clock tower and the building
In each cycle of its operation, a refrigerator removes 10 J of heat from the inside of the refrigerator and releases 38 J of heat into the room. How much work per cycle is needed to operate this refrigerator.
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
The density of ma ial at the center of a neutron star is approximately 1.00 x 10^18 kg/m^3. Calculate the mass of a cube
q1. a street lamp weighs 158 n. it is supported equally by two wires that form an angle of 104 degrees with each other.
An elevator at the CN Tower in Toronto, Canada, is able to lift 2000 kg (including the load and the car) to a height of 350 m in 60.0 s. find the minimal power required for the motor of the elevator
A diver can reduce her moment of inertia by a factor of 3.5 when changing from a straight position to the tuck position. find her angular speed when in the straight position
A friend is working on a biology experiment and needs to make an electric field of magnitude 460 {rm N/C} at a distance of 10 {rm cm} from the central portion of the large nonconducting square plate 5.2 {rm m} on each side.
A horizontal beam of positrons initially moving at 3.3 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel
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