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A rifle with a weight of 30 N fires a 5.0-g bullet with a speed of 300 m/s.
(a) Find the recoil speed of the rifle.
(b) If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
High jumpers usually sustain fractures in the lower third of the fibula. The world record for the high jump is held by Javier Sotomayor (Cuba) at 2.45 m (1993). what is the stress in the fibula
A model airplane of mass 0.790 kg is flying at constant speed in a horizontal circle at one end of a 26.0 m cord and at a height of 11.0 m. What is the acceleration of the plane
question1 two wires hold up a massive beam of length l16 m and mass 330 kg. a box of mass 220 kg hangs from a wire that
Michael drops a penny into a river from a bridge 44 m above the water. Another penny is thrown vertically down by his friend Jeremy 1.00 second after. What is the initial speed of the second stone
An automobile of mass 1500 kg moving at 25m/s collides with a truck of mass 4500 kg at rest. What is the final velocity of the car after the collision
The force component along the displacement varies with the magnitude of the displacement, Find the work done by the force in the interval
A uniform electric field exists in a region between two oppositely charged plates. What is the magnitude of the electric field
One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail and the nail deflects downward by 2.00 x 10^-5. what is the diameter of the nail
A car with good tires on a dry road can decelerate at about 5.0 m/s2 when braking. Suppose a car is initially traveling at 55 mi/h. (a.) How much time does it take the car to stop.
What quantum number of the hydrogen atom comes closest to giving a 500-nm-diameter electron orbit, What is the electron's energy in this state
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
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