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An object is dropped from the edge of the building. After some time, the object is fallen 13 meters in the -y direction. If the object was dropped and one waited twice the time, what is the displacement of the object in meters? (Hint: use proportions.) If the answer is negative, include a negative sign, but do not include a positive sign for positive answers.
As shown in the figure below, two long parallel wires (1 and 2) carry currents of I1 = 3.02 A and I2 = 5.35 A in the direction indicated. Determine the magnitude and direction of the magnetic field at a point midway between the wires (d = 10.0 cm).
Balmer discovered the famous formula that bears his name by inspection and trial and error. See if you can discover the formula for each of the following series of wavelengths. Each formula involved an integer n, but, as in the Balmer formula, n m..
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
A puck of mass 0.165 kg, initially resting on ice, is hit by a stick to gain a speed of 32.0 m/s and then slides 25.0 m to lose 5.00% of its kinetic energy. What is the work done on the puck by the stick
A 1.56m tall student stands before a vertical mirror. She can just see her whole body, from head to toe. How tall is the mirror
A 1x10^2-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.25. What must be the magnitude of, so that the net work completed by it and the kine..
A mass is oscillating with amplitude A at the end of a spring. How far (in terms of A) is this mass from the equilibrium position of the spring when the elastic potential energy equals a third the kinetic energy?
two speakers emit sound waves with frequency 4.71 khz. they are driven by the same oscillator so that they are in phase
For the motion diagram given (Figure 1) , sketch the shape of the corresponding motion graphs in Parts A to D. Utilize the indicated coordinate system. One unit of time elapses among consecutive dots in the motion diagram.
A person with mass 70.0 kilogram jumps out of a window from a fire in his building into the firefighters' net below. Find his change in momentum during the 0.40 second interval
An alpha particle travels at a velocity of magnitude 420 m/s through a uniform magnetic field of magnitude 0.061 T. compute the magnitude of the acceleration of the particle
A lens with a refrective index of 1.5 is coated with a material of refractive index of 1.2 in order to minimize the reflection. what is the thinnest possible coating
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