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A mountain climber friend with a mass of 80 kg pondersthe idea of attaching a helium balloon to himself to effectivelyreduce his weight by 25% when he climbs. He wonders what heapproximate size of such a balloon would be.
One cubic meter of water flowing over Niagara Falls in New York drops 92.2 meters. how much heat energy would the water have
Write three methods of increasing the volume of a balloon
A generator is designed to produce a maximum emf of 150 V while rotating with an angular speed of 3600 rpm. how many turns of wire are needed
A listener increases his distance from a sound source by a factor of 3.05, what is the change in the sound intensity level in dB
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
a closed Gaussian surface in the shape of a cube of edge length 2.03 m. What is the net charge (in Coulombs) contained by the cube
A small conductive rod of length 2 m moves with a constant velocity v=17 m/s in a direction parallel to a long wire carrying a current of 26 A. The the axis of the rod is perpendicular to the direction of the wire and the distance between the wire..
A two-slit pattern is viewed on a screen 1.17 m from the slits. What is the width of the central bright fringe, if the third dark fringes on either side are 26.4 cm apart?
a 1.53 kg particle with velocity 9.44 ms - 4.84 ms is at x 1.03 m y 6.67 m. it is pulled by a 2.10 n force in the
Please show work so I can see all the steps. A metallic sphere initially has a net charge of +4.0 nC. What is the new net charge on the sphere
Planet-X has a mass of 4.25×1024 kg and a radius of 6050 km. What is the Second Cosmic Speed i.e. the minimum speed required for a satellite in order to break free permanently from the planet
A force of 715 N is applied to a roller-coaster car to push it horizontally. If 2.72 X 10^4 J of work is done on car, how far has it been pushed.
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