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A disk 15 cm in diameter rotates counterclockwise in a horizontal plane, accelerating uniformaly from 33 rpm to 45 rpm in 1 min.
A) What is the angular acceleration of the disk?
B) What is the angular speed of the disk 30 sec after it starts to accelerate?
C) What is the tangential speed of a point on the edge of the disk 30 sec after it starts to accelerate?
D) Through how many rotations does the disk turn while accelerating from 33 rpm to 45 rpm?
Explain how horizontal motioncan be uniform while vertical motion is accelerated.How will projectile motion be affected when dragdue to air resistance is taken into consideration?
You are designing a delivery ramp for crates containing exercise equipment. Calculate the maximum force constant of the spring that can be used in order to meet the design criteria
an rl circuit consists of a resistor r68 onmusigma an inductor l31 mh and an ac generator with an rms voltage of 120 v.
A shopper pushing a cart through a store moves 30 m south, then makes a 90o turn and moves 14 m. Find the magnitude of the smallest possible displacement
Determine the angular displacement in radians that the minute hand of a watch moves through from 3:15 A.M. to 7:30 P.M. the similar day
A 60. kg student jumps from the 10. meter platform at EKU'sswimming complex in to the pool below. Determine her PEg at the top of the platform.
The moment of area for a rectangle about the horizontal axis is: Ixc = bh3/12. Calculate the centroidal second moment of area for the T-shaped region about the x-axis.
If parallax can be measured with an accuracy of 0.01 arc second, and the mean density of stars in the solar neighbour is 0.1 pc^-3, how many stars can have their distance gauged via parallax?
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
You are standing between two plane mirrors that are parallel to each other. How many total images of you would there be formed by this arrangement
A wire has a resistance of 60.0 ohms, and is bent into a squareloop with sides of length 15.0 cm. The loop is perpendicularto a magnetic field which is changing at a rate of7.000e-3 T/s. What is the current induced in the wire?
In the x-y plane, a point of +2.6 uC is on the x-axis at (-3 cm, 0), and a second point charge of -3.4 uC is also located on the x-axis, Determine the Work required (in keV) to move an electron from Pa to Pb
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