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A water hose 2.75 cm in diameter is used by a gardener to fill a 28.0-liter bucket. (One liter = 1,000 cm3.) The gardener notices that it takes 1.00 min to fill the bucket. A nozzle with an opening of cross-sectional area 0.500 cm2 is then attached to the hose. The nozzle is held so that water is projected horizontally from a point 1.00 m above the ground. Over what horizontal distance can the water be projected?
Two equally charged, 1.00 {rm g} spheres are placed with 2.00 {rm cm} between their centers. When free, each begins to acceleration speed at 225 {rm m/s^2}. What is the magnitude of the charge on each sphere.
A proton accelerates from rest in a uniform electric field of 675 N/C. At some later time, its speed is 1.35 106 m/s. (a) Find the magnitude of the acceleration of the proton.
An object 3.4 mm tall is placed 25cm from the vertex of of a convex spherical mirror. how far is the image from the vertex of the mirror
A box of books weighing 397 N is shoved across the floor by a force of 543 N exerted downward at an angle of 37 degrees below the horizontal.
A drop of water on a countertop reflects light from a flower held 2.2 cm directly above it. What is the focal length of the water drop
A boat is traveling upstream at 20 km/h with respect to the water of a river. The water is flowing at 4.0 km/h with respect to the ground. What is the speed of the boat with respect to the ground
A coil with an inductance of 1.8 H and a resistance of 6.7 ? is suddenly connected to a resistanceless battery with an ? = 80.0 V. What is the rate at which thermal energy is appearing
Compressed air in a car lift applies a force to a piston with radius 5.00 cm. What pressure produces the lift
A bullet of mass 11.1 g is fired into an initially stationary block and comes to rest in the block. How much kinetic energy is lost
A 3.3-m-diameter merry-go-round with rotational inertia 100kg?m2 is spinning freely at 0.60rev/s. Determine the total energy lost to friction
The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.0cm. The pulley is free to turn on a fixed smooth axle. The vertical section of the string supports a 400 g object. The string does not slip at its conta..
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
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