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A person pushes on a stationary 125 N box with 62 N at 30° below the horizontal, as shown in the figure. The coefficient of static friction between the box and the horizontal floor is 0.83.
1) What is the largest the friction force could be?
A 5 litters cylinder contains oxygen at 20 C, and 101 kpa. if the temperature increases by 15 C, what is the final temperature of the gas?
A 14.2-g piece of Styrofoam carries a net charge of -0.69 µC and is suspended in equilibrium above the center of a large, find the charge per unit area on the plastic sheet
two stones are thrown simultaneously one straight upward from the base of a cliff and the other straight downward from
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
Two 12-cm-diameter electrodes 0.54cm apart from a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 14V battery. What are the charge on each electrode
When red light illuminates a grating with 7000 lines per centimeter, its second maximum is at 62.4o. What is the wavelength of this light?
A person who is 1.5 m tall throws a ball horizontally with a speed of 4.2 m/s. What is the speed of the ball the moment before it strikes the ground (in m/s)?
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.2 MJ when the flywheel is rotating at 17,500revolutions per minute
An electron with kinetic energy 1.56 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 23.0 cm. Find the frequency of circling
The balloon contains 0.30mol of helium starts at a pressure of 110 kPa and rises to an altitude where the pressure is 70.0 kPa, How much work does the gas in the balloon do
A parallel-plate capacitor has plate diameters of 5 x 10-2 meter and a spacing of 0.5 x 10-3 meter. If it is charged at a rate of 5 x 10+5 V/s, then, Find What is the value of electric flux in the capacitor
What must the charge (sign and magnitude) of a 1.49-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 660N/C?
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