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The model airplane in Figure 5.6 is flying at a speed of 14.5 m/s on a horizontal circle of radius 18.1 m. The mass of the plane is 0.801 kg. The person holding the guideline pulls it in until the radius of the circle becomes 14.9 m. The plane speeds up, and the tension in the guideline becomes four times greater. What is the net work done on the plane?
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
How several cubic meters of water are removed from storage under an area of 1 million square meters when the average head decline in this area is 2 meters.
How much work done against force of gravity
A spherical conductor with radius 2.00 cm is centered on the origin and holds charge q1=-250 nC, Find the surface charge density a(charge per area) on the outside surface of the outer spherical shell
A stone is thrown upward with an initial velocity of 6 m/s. What maximum height will the stone reach?
Identical point charges of +2.4 ?C are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, Find the sign and magnitude of the third charge
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo which is greater than the terminal speed Vterm. Describe and explain how the velocity varies with time, and make a plot of Vy against t for t..
Assume that an inexpensive watch runs 0.004% slower than a "perfect watch" (viz., a "time standard") that neither loses nor gains time, what would the perfect watch measure for this time interval
A car drives straight off the edge of the cliff that is 56 m high. The police at the scene of the accident note that the point of impact is 128m from the base of the cliff. How fast was car travelling when it went over the cliff.
Jack is a second-grade student. He seems to have no interest in learning, frequently daydreaming in class and frequently disrupting the class by throwing objects at other students. Explain how a bio psychosocial approach may provide both an integrate..
A block (m+12 kg) is moving at a speed of 7.0 m/s on a level surface. A force of 25 N is applied in the direction that is moving but it comes to a stop in a distance 625 cm
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position?
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