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Suppose the force on an object is (5i-8j) N over a displacement of (5i+2j) meters.
A) How much work is done by that force?
B) What is the angle between the force vector and the displacement vector?
The wheel of a car has a radius of .350 m. the engine of the car applies a torque of 295 Nxm to this wheel that does not slip against the road surface.
A point on the outer rim of a tire on a moving vehicle exhibits uniform circular motion with a frequency of 28 Hz. calculate How fast is the car moving in km/hr
The lowest note on a grand piano has a frequency of 27.5 . The entire string is 2.00 long and has a mass of 430 . The vibrating section of the string is 1.88 long. Part A What tension is needed to tune this string properly?
A potential difference of 81 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the ce..
A parallel-plate capacitor with circular plates of radius 65 mm is being discharged by a current of 7.5 A. What is that maximum value
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?
Consider a three dimensional rectangular infinite potential well with sides of length L, 2L and 3L. What is the energy of the first excited state relative to the energy of the ground state
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.60 m/s2. What angle does the ramp make with respect to the horizontal
A "1m" mercury germicide lamp emits 50 Watt of 0.2537?m light through its quartz tube. compute the frequency of this light
A typical person radiates about 62 W of power at room temperature. Given this result, how long does it take for a person to radiate away the energy obtained by consuming a 230-calorie doughnut.
What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 6.99 m/s when going down a slope for 2.15 s
A plane mirror is lying flat in the x-y plane with its reflecting surface facing up. A point source of light is located at (x=0.0 m, y=2.0 m, z=3.0 m). What is the distance from the object to the image
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