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A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 69 kg, and the height of the water slide is 11.9 m. If the kinetic frictional force does -7.6 × 103 J of work, how fast is the student going at the bottom of the slide? Use g = 9.81 m/s2.
An air conditioner removes 5.0 * 105 J/min of heat from a house, What is the air conditioner's coefficient of performance
Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 35.0mph and half the distance at 73.0mph. What is her average speed on the return trip
Calculate the conduction rate of heat H=deltaQ/deltaT through an A=2.0 m^2 glass window of the thickness of the glass is 4 mm and the temperature difference between the inside and the outside is 20 degree celsisus
An ideally efficient airplane engine provides work as heat flows from 1400 K burned gases to 260 K air
The volume flow rate in an artery supplying the brain is 3.20 10-6 m3/s. If the radius of the artery is 6.00 10-3 m, determine the average blood speed
Compute the rms speed of a nitrogen molecule at 16.0 °C. At what temperature will the rms speed be half that value
Bailey is trying to save a young girl under a 15 m long wooden beam. She lifts the beam up from one side with a force of 25 N using her nose. find the magnitude of the torque that Bailey puts on the beam
A uniform cylinder of radius 11 cm and mass 24 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 4.6 cm, What is the rotational inertia of the cylinder about the axis of rotation
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
The 87?F capacitor in a defibrillator unit supplies an average of 6500 W of power, To what voltage is the capacitor charged
Two forces are applied to a car in an effort to accelerate it. The first force, F1 = 328 N, is applied at an angle α = 35° to the forward dashed line. The second force, F2 = 544 N, is applied at an angle β = 8° to the forward dashed line. (a) What is..
A cigarette lighter in a car is a resistor that, when activated, is connected across the 12-V battery. Find the current that the battery delivers to the lighter
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