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A student from Sidney, Australia compares the distance he obtained from the 1-st spark mark to the 20-th spark mark, with the similar result of a student who did the experiment in Gaithersburg, Maryland. Both students operated identical setups powered with 60 Hz AC, reported no missing spark marks, and certified precision of their measurements in four significant figures. What difference in the results was found? Data for the gravity acceleration constant are provided in the text.
A student in Europe performs the same experiment, but the AC frequency there is 50 Hz. How different length of sensitized tape will he need in order to get 20 spark marks, compared to the length of your tape for the same number of marks? Give the result in centimeters.
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)?
What is the final temperature of the water and zinc.
Here is a box on whose surfaces the electric field is measured to be horizontal and to the right, Calculate the electric flux through every face of the box, Calculate the total flux through the box
During the collision with the ground, he comes to rest in a time of .101 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. Elucidate from what height did the student f..
Three equal positive charges Q are each fixed at a corner of an equiliateral triangle of side length a, Draw a free body diagram for the negative charge, Find the magnitudes of the net force on the negative charge
When driving west toward the Rocky Mountains, you see a peak 2.8 degrees above the horizon. Your GPS gives your current elevation as 1500 m , and according to the map, you're 22.5 km (horizontally) from the peak. Find the peaks elevation.
Assume that, as lying on a beach near the equator of a far-off planet watching the sun set over a calm ocean, you start a stopwatch just as the top of the sun disappears.
describes the net gravitational force on the particle due to the shell? zero if the particle is at the center of the shell but nonzero at other locations within the hollow zero for any location of the particle within the hollow.
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What is the energy.
Mrs. Smith has returned to work and feels well. She does not know why she needs to have periodic blood tests due to the warfarin. What is your explanation to Mrs. Smith.
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