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A 4.9 kg cart is placed on a frictionless air track with an angle of 47.6o. A 24.2 kg mass is attached to the cart using a massless string draped over the end of a frictionless pulley at the top of the track. What is the expected acceleration of the cart along the air track.
A container of water begins with a heat capacity of 500J/K (constant) and a temperature of 70?C. What is the change in the entropy of the water
Suppose someone is running towards a siren which is at rest. The siren emits a frequency of 400 Hz. What will the person hear
Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.10 ft and b = 2.10 ft. HINTS: Think ..
A 2.0 hp electric motor on a water well pumps water from 10 m below the surface. How many liters of water does the motor pump in 1 hr
A 1967 Kennedy half-dollar has a mass of 1.150 x 10-2 kg. The coin is a mixture of silver and copper, and in water weighs 0.1012 N. Determine the mass of silver in the coin
One runner covered the 100-m dash in 10.9 s. Another runner came in second at a time of 11.4 s, determine the separation between the two runners when the winner crossed the finish line
An automobiletraveling at 80.0 km/h has tires of75.0 cm diameter. How far does the car move during the braking
Radiation of intensity 1.00 kW/m2 is incident on an area perpendicular to the incoming light. What is the resulting power per unit area now reaching the surface
A long solenoid that has 1,105 turns uniformly distributed over a length of 0.452 m produces a magnetic field of magnitude 1.00 10-4 T at its center
A 13 kg bucket of water of is suspended by a rope wrapped around a windlass that is a solid cylinder 0.400 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center.
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. Utilize newton's laws to determine the electron's velocity after it moves .10 cm.
A point charge with charge is held stationary at the origin. How much work is done by the electrostatic force on the moving point charge
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