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The speed of sound inhydrogen is 1330 m/s at 20°C (= 68°F = 293 K). A moleof hydrogen has a mass of 2.016 g. Find the dimensionless ratioγ for hydrogen if this speed of sound is correct and hydrogen behaves like an ideal gas.
An apple crate with a mass of 20 kg stands on a frictionless horizontal surface. A force F = 14.5 N is applied to the crate, find the normal force exerted by the surface on the crate
A cylindrical aluminum pipe of length 1.33 m has an inner radius of 1.90 10-3 m and an outer radius of 3.00 10-3 m. What is the resistance of this unit
suppose we measure the resistance from one hand to the other and find it to be 2 kilo ohms. What is the resistivity of skin
The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.160 m) cos (pt/16). What is the maximum net force on the mass as it oscillates
A mass m = 90 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.8 m and finally the flat straight section at the same height as the center of the loop (18.8 m off the ground). Because the mass would not..
By landing properly and on soft ground (and by being lucky!), How fast would a person be falling when he reached the ground if there were no air drag
A proton is fired directly into a uniform electric field that is able to bring the charge momen- tarily to rest. How much work does the electric field do in stopping the proton
The displacement, s, of a particle moving under uniform acceleration, a, is some function of the elapsed time,
After leaving some presents under the tree, Santa notices his image in a shiny spherical ornament. what is the height of his image
A wheel moves forward for 2 seconds making two complete revolutions. The wheel rotates during an arc length of 8.2 meters.
A converging lens has a focal length of f = 26 cm. An object is placed 39 cm from the lens. Find out the size of an image in cm if the object has a height of 5 cm. express answer with one decimal place.
A wire of radius 1.5 mm carries a current of 2.8 A. The potential difference between points on the wire 20 m apart is 4.7V. determine the electric field in the wire
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