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A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal.
How many forces are acting on the crate?
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, what is the resultant amplitude of the two waves
A 75-kg piece of metal has specific heat 430 J/kg°C and is initially at 950°C. To cool it down, it is dunked into 710 kg of oil that has a temperature of 32°C and specific heat of 2700 J/kg°C. Assuming that heat flows only between the oil and the m..
Compute Earth's gravitational force on the Shuttle astronauts while orbiting at an altitude of 220 miles (or 354 km) above Earth's surface.
A baseball pitcher throws a 145 g baseball parallel to the ground with a speed of 24.76 m/s in the +x direction. What is the velocity of the ball after leaving the bat
A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. What is the acceleration of the rising balloon
A tank is in the shape of an inverted cone, having height h = 2.50 m and base radius r = 0.750 m. If water is poured into the tank at a rate of 15 L/s, how long would it take to fill the tank.
A wheel is mounted on a stationary axle which we can assume frictionless. As a result, the wheel can turn freely but cannot translate. How much work is done by you on the pulling
Two objects attract each other gravitationally with a force of 2.5×10-10 while they are 0.60 apart. Their total mass is 5.0. Find out their individual masses.
A cylindrical hoop and a spherical shell both roll without slipping and both have identical masses (6 kg) and identical radii (0.2 m). What is the velocity of each at the bottom of the hill
Two identical particles of mass m approach each other at equal and opposite speeds, v. How much kinetic energy was lost in this collision
A particular heat engine has a mechanical power output of 6.00 kW and an efficiency of 28.0%, Find the energy taken in during each cycle
Charge A and Charge B are 5.00m apart, A is +3.00 C and charge B is +7.00C, How far from charge A is charge C
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