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An archer shoots a 100 g arrow straight up in the air. The bow was drawn back 50 centimeter by a 150 force. Calculate how high does the arrow rise, suppose friction is negligible? Calculate how high does the arrow rise assuming the force of air friction on the arrow averages 0.80 Newton during the upward flight. Assume the bow acts like an ideal spring.
A thin, uniform, metal bar, 2.00 m long and weighing 90.0 N, ishanging vertically from the ceiling by a frictionless pivot. Find the angular speed of the bar just after the collision
A sledge loaded with bricks has a total mass of 17.4 kg and is pulled at constant speed by a rope inclined at 21.0° above the horizontal. What is the tension in the rope
In a non-uniform gas, the equation of state is valid locally, as long as the density does not change too rapidly with position. Find the density as a function of height
An electric motor rotating a workshop grinding wheel at a rate of 9.80x10^1 rev/min is switched off. how long does it take for the grinding wheel to stop
A long horizontal wire with linear mass density λ = 47.5×10−3 kg/m carries acurrent of 0.534 A. The wire is situated so that it is perpendicular to a uniform, horizontal magnetic field that is juststrong enough to levitate the wire against its weight..
A 81.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, What braking force must its rockets provide
An empty parallel plate capacitor is connected between the terminals of a 10.2-V battery and charges up. what is the new voltage between the plates of the capacitor
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, 13m above the moat. The rock is launched at a speed of 27m/s and an angle of 40oC above the horizontal.
at some instant the velocity components of an electron moving between two charged parallel plates are vx 1.10 105 ms
Calculate the ratio S/L of the magnitudes of the spin angular momentum to the orbital angular momentum for an
A train traveling at v0 = 28.0 m/s begins to brake by applying a velocity-dependent instantaneous acceleration a(v) = ? /(v+u) m/s^2, Determine the distance traveled by the train until it comes to a complete stop
A college student produces about 135 kcal of heat per hour on the average. What is the rate of energy production in watts
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