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A 58 kg gymnast does a vault. He is traveling at 5.6 m/s just before he lands. He comes to a stop in 0.08 s. What is the average net force acting on him during this time? What direction does it point?
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 59.7 cm (0.597 m) and the flow speed of the petroleum is 10.7 m/s. what is the pipe\'s diameter at the refinery
An ideal gas expands isothermally, performing 4.30×103J of work in the process. Calculate the heat absorbed during this expansion
In addition, the snow exerts a retarding force on the sled that points opposite to direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
The radius of the Sun is 6.95 × 108 m. It radiates heat at the rate of 5.42 × 1026 W. Assuming that it is a perfect emitter, what is the temperature of the surface of the Sun
After 3.1 ms has elapsed, how much charge remains on the 3.00-µF capacitor, What is the current in the resistor at this time
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
Two conductors having net charges of +16.0 µC and -16.0 µC have a potential difference of 16.0 V between them. (a) Determine the capacitance of the system.
How much work is done by the motor when the motor when the position of the arm is moved from x=0.150m to x=0.750m? what is the power of the motor in watts
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. How much heat is lost per hour if the respiration rate is 19.0 breaths per minute
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
An equipotential surface that surrounds a point charge q has a potential of 585 V and an area of 1.27 m2. Determine q
q1. an underwater diver sees the sun 56 above parallel.how high is the sun above the horizon to a fisherman in a boat
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