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One end of a cord is fixed and a small 0.550-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When ? = 17.0°, the speed of the object is 5.30 m/s. At this instant, find each of the following.
the tangential and radial components of acceleration:?
total acceleration:? inward and below the cord at degrees
The position of a particle as it moves along a y axis is given by y = (2.0 cm) sin (?t/4), What is the instantaneous acceleration of the particle at t = 0, 1.0, and 2.0 s
The rms electric field of an electromagnetic wave increases from 286 to 858 N/C.find the wave intensities for the two values of the electric field.
Calculate the period T and the tension in the string F as a function of the angle. Compute the moment of inertia of this system for an axis that passes through the combined center of mass and is perpendicular to the plane of the rings.
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
If the bullet buries itself in the block, find out how far along the ground that the block lands from the base of the table.
A lightbulb has a resistance of 13? and consumes 9.4W of power; the rod is 1.33m long and moves to the left with a constant speed. what is the speed of the rod
Find speed of the block at the bottom of the ramp. What is tangential acceleration of a bug on the rim of a 78 rpm record of diameter 7.41 in. if the record moves from rest to its final angular speed in 4 s.
What is the smallest probable displacement of shopper.
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge? Through what potent..
Two atomic clocks are carefully synchronized. One remains in New York, and the other is loaded on an airliner that travels at an average speed of 250m/s, Which clock will show the shorter elapsed time
A certain type of laser emits light that has a frequency of 5.4 x10^14 Hz. The light, so, occurs as a series of short pulses, each lasting for a time of 2.7 x10-11 s.
Vector A, which is directed along an x axis, is to be added to vector Bvec , which has a magnitude of 3.0 m, with a magnitude that is 5 times that of A, What is the magnitude of A
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