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Four force vectors act simultaneously on a 65 kg object. Force One is 211 N West, Force Two is 193 N at an angle 28.0 degrees north of west, force three is 135 N at an angle 35.0 degrees east of south, and force four is 278 N and an angle 15.0 degrees east of north. What is the magnitude of the final acceleration of the object?
A bullet with mass m = 5.21 g is moving horizontally with a speed v = 373 m/s when it strikes a block of hardened steel with mass M = 14.8 kg, What was the change in kinetic energy (J) of the bullet
What is the acceleration (magnitude and direction) of pebble during the downward motion.
Two 2.50-cm-diameter disks spaced 2.00mmapart form a parallel-plate capacitor. The electric field between the disks is 4.60×105V/m. What is the voltage across the capacitor
The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft. What is the refractive power of this lens? What focal length (mm) eyepiece would give a magnification of 1000x for this telescope?
A 2.0cm×2.0cm×7.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm. What is the block's mass density
A lecturer is demonstrating two-slit interference with sound waves. Two speakers are used, 1.9 m apart. The sound frequency is 1180 Hz and the speed of sound is 343 m/s. Students sit facing the speakers in a row of seats 5.1 m away.
A particle with charge of 4 microcoloumbs is at the origin,another identical particle is placed 2 m from the origin on thepositive x-axis and another 2 m on the positive y-axis. Provide asketch with vectors representing the forces on the charge at..
A pair of power transmission lines each have a 0.800 ? resistance and carry 694 A over 9.14 km. If the rms input voltage is 38.1 kV. Calculate the power loss in the lines
A rectangular antenna has a height of 3m and a width of 6 meters. It operates at a frequency of .5 GHz. What are the two half-power angles
A chain consisting of five links, each of mass 0.120 kg, is lifted vertically with a constant acceleration of a = 4.3 m/s2. Find the magnitude of this force
Consider a frictionless track. A block of mass m1=10.0kg is released from A, at a height h=17.0m. It makes a head-on elastic collision at B with a block of mass m2=22.0kg that is initially at rest. Calculate the maximum height to which m1 rises after..
The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash, Assuming that the flash lasts for 4.6 ms, find the effective power or "wattage" of the flash
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