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The top of Pike's Peak is 14,100 ft above sea level. Neglecting the variation of T with altitude and using the average surface temperature of 290K and the number average molecular weight of 29 for air, calculate the atmospheric pressure at the top of this mountain. Compare with the observed average value 446 torr. Show all calculations.
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, Assuming that the potential difference across the capacitor is 1.5 V, what must the area of each plate be
A horizontal spring is lying on a frictionless surface. One end ofthe spring is attached to a wall whle the other end is connected toa movable object. The spring and object are compressed by0.055 m, released from rest, andsubsequently oscillate ba..
Steam enters at 4 MPa and 400 degrees C enters a nozzle steadily with a velocity of 60 m/s, and it leaves at 2 MPa and 300 degrees C. The inlet area of the nozzle is 50 cm^2, and the heat is being lost at a rate of 75 kJ/s. Determine the mass flow ra..
You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. obtain with what speed do you and the ball move afterwards
q1. a small ball of mass 62 g is suspended from a string of length 37 cm and whirled in a circle lying in the
A solid, uniform ball rolls without slipping up a hill, How fast is it moving just before it lands and How far from the foot of the cliff does the ball land
Frames k and k' are inertial frames. Frame k' is moving at a velocity of magnitude v realtive to frame k in the direction of the x-axis. there are rigid rods in each frame oriented along the direction of the relative velocity. someone in frame k meas..
a. write newtons law of gravitational force between you mass m and the earth mass me radius re in the form of an
A 19.5 ?F capacitor is fully charged by connecting it to a 14.0 V battery. Calculate the charge stored on one of the capacitor plates
The density of a 2.45-m long rod can be described by the linear density function ?(x) = 121 g/m + 13.5x g/m2. One end of the rod is positioned at x = 0 and the other at x = 2.45 m. Determine the total mass of the rod
In this problem, the question tells us that there are two springs connected to each other, and that the spring constant of each of them is 6430 N/m. Can someone explain why the total effective spring constant of the 2 springs is k/2 and not just 6430..
How many watts must a fluorescent bulb (25% efficiency) use to produce the same amount of light as a 100-watt incandescent bulb, What would the power consumption be for an LED
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