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A 3.02 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.3 N at an angle θ= 15.5° above the horizontal, as shown.
The boiling point of liquid nitrogen is 77.3 K at atmospheric pressure. What is this temperature on the Celsius scale? What is this temperature on the Fahrenheit scale
A physics student playing with an air hockey table (frictionless surface) , What is the angle of inclination
An electron moves at a speed of 14000 m/s in a circular path of radius 2.4 cm in a solenoid. Find the strength of the magnetic field inside the solenoid
A flower pot falls from the ledge of a building. A person in an apartment below, coincidentally holding a stopwatch, notices it takes 0.7s for the pot to fall past his window, which is 18m high. g=9.81m/s2. How far above the top of the window is t..
A copper weight is placed on top of a 0.23 kg block of wood (density = 0.60 x10^3 kg/m3) floating in water. What is the mass of the copper
A uniform, cylindrical pulley of mass M=12.2 kg and radius R=0.272 m rotates freely about a fixed horizontal axis. What is the mass of the block
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
Caught in an avalanche, a skier is fully submerged in flowing snow of density 113 kg/m3. What percentage of the gravitational force on the skier is offset by the buoyant force from the snow
A firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady speed of 2.9 m/s. How much work has been done on the hose
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12.0 m/s at an angle 47.0 degrees, obtain the maximum height the ball goes above the ground
A proton accelerates from rest in a uniform electric field of 524 N/C. At some later time, its speed is 2.36 × 106 m/s. What is its kinetic energy at the later time
A picture hangs on the wall suspended by two strings, as shown in the figure, with theta = 68°. The tension in string 1 is 1.4 N. What is the weight of the picture
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