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A rifle is aimed horizontally at a target 50 meter away the bullet hits the target 1.5 centimeter below the aim point,
Find the bullet flight time?
Find the bullet speed as it left the barrel?
A hockey player strikes a 166 g puck, accelerating it from rest to 48 m/s. If the hockey stick is in contact with the puck for 2.5 ms, what is the average force applied by the stick
A 140g coin sits on a horizontally rotating turntable. The turn table makes on revolution each 2 s. the coin is located 8.00 cm from the axis of rotation of the turntable. The acceleration of gravity is 9.81 m/s/s. what is the frictional force acting..
A 0.5 kg mass is located on the end of a vertical spring that has a spring constant k of 75 N/m, Find change in gravitational potential energy of system
A playground Merry-Go-Round has a mass of 291 kg which can be viewed as being uniformly distributed over a disk of radius 2.4 m. What is the new rotation rate assuming the child remains at the rim
A rock thrown with an initial velocity of 38.5 m/s at an angle of 55.0 o with respect to the horizontal has a range of 975 m on a certain planet
In emergencies the train can decelerate more rapidly, coming to rest from 80.0 km/h in 8.30 s. What is its emergency deceleration in m/s2
A piece of Nichrome wire has a radius of 7.00 10-4 m. It is used in a laboratory to make a heater that dissipates 3.00 102 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessar..
question1later than the sun exhausts its nuclear fuel its ultimate fate will be to collapse to a white dwarf state. in
A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes the pot 0.360 s to passthis window, which is 2.00 m high. How far is the top of the windowbelow the windowsill from which the flowerpot fell?
A long cylindrical conductor is placed in an initially (i.e., before the cylinder is present)uniform electric field which is perpendicular to the axis of the cylinder. Find the electrical potential outside of the cylinder
A 80kg person at the fair rides the famous "spinning bottomlesscylinder", (r = 4m). what is the minimum centripetal force needed
A pair of speakers separated by 0.700 meter are driven by the same oscillator at a frequency of 675 Hz. Estimate how far will the observer be from the speaker when the first relative minimum is detected in the intensity
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