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During a workout, the football players at Rutgers State University ran up the stadium stairs at a steady pace in 48 s. The stairs are 90 m long and inclined at an angle of 31o. If a typical player has a mass of 90 kg, estimate the average power output on the way up. Ignore friction and air resistance.(g = 9.8 m/s2)
To drive to Chicago, a distance of about 150 km in 2 hours, you must average a speed of 75 km/hr. How fast must you drive to keep an average speed of 75 km/hr
A 64kg human sprinter can accelerate from rest to 10 m/s in 3.0s. What is the average power output of the greyhound
A force of 380 N pushes a 52 kg object. The coefficient of kinetic friction is 0.4. Find the acceleration of the box
Calculate the density of a solid substance if a cube measuring 3.62 cm on one side has a mass of 153 g. The answer has units of g/cm3
A transformer takes 120V (RMS) from a household circuit and drops it to supply a secondary circuit at 8V (RMS) to power a dorbell at 3.75A (RMS). What is the peak current in the primary coil of the transformer
What inductance must be connected to a 25 pF capacitor in the oscillator capable of generating 480 nm (i.e., visible) electromagnetic waves.
A wave pulse travels down a slinky. The mass of the slinky is m = 0.88 kilogram and is initially stretched to a length L = 7.3 meter. Evaluate the new mass density of the slinky
This can lead to adverse decisions on product costing and pricing. To address this issue, some authors have suggested using the Activity Based Costing method." Do you agree with the above statement? Discuss and give relevant examples to support you..
q1. a tank with a volume of 0.150 m contains 27.0 degrees celsius helium gas at a pressure of 100 atm. how many
A homemade capacitor is assembled by placing two 10 in pie pans 11 cm apart and connecting them to the opposite terminals of a 9 V battery. Estimate the charge on each plate
The large piston in a hydraulic lift has a radius of 250 cm2. Obtain what force must be applied to the small piston with a radius of 25 cm in order to raise a car of mass 1500 kilogram
A photographer in a helicopter ascending vertically at a constant rate of 12.5 m/s accidentally drops a camera out the window, How long will it take the camera to reach the ground
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