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A spacecraft is in a circular orbit about the moon, 1.03 x 105 meter above its surface. The speed of the spacecraft is 1770 meter per second, and the radius of the moon is 1.74 x 106 meter. If the moon were a smooth, reflective sphere:
(a) determine how far below the moon's surface would the image of the spacecraft appear?
(b) Find the apparent speed of the spacecraft's image? (Hint: both the spacecraft and its image have the same angular speed about the center of the moon.)
Two small, positively charged spheres have a combined charge of5.2*10-5 C. If each sphere is repelled from the other by an electrostatic force of 2.25 N when the spheres are 1.6 m apart, what is the charge on sphere with the smaller charge?
A hockey puck is sliding across a frozen pond with an initial speedof 8.1 m/s. It comes to rest after sliding adistance of 17.0 m. What is the coefficient of kinetic friction between the puck and the ice?
a 1000 kg car traveling south at 30ms collides with a 2500 kg truck traveling north at 15 ms.a what is the total
When a pitcher throws a curve ball, the ball is given a fairly rapid spin. If a 0.15-kg baseball with a radius of 3.7cm is thrown with a linear speed of 48 m/s and an angular speed of 42 rad/s, how much of its kinetic energy is translational and ..
A magnetic field is applied perpendicular to the plane of the disk. Assume that the field is 0.900 T, Find the emf generated between the brushes
Some of the first "microscopes" were really single-lens magnifying glasses made by Leeuwenhoek. These devices had magnifications as high as 200.
A cube of ice is taken from the freezer at -8.50C and placed in a 95-g aluminum calorimeter filled with 310 g of water at room temperature of 200C. Find the mass of the ice cube
A 2 kg book rests on a frictionless, horizontal surface. Acord attatched to the book passes over a pulley whose diameter is.150m, find The moment of inertia of the pulley about its rotation axis
A massless rope connects two blocks through a frictionless pulley with a moment of inertia I = 0.4 kgm 2 and a radius R = 0.2 m. Find velocity of the second block just before it hits the ground
A flower pot fell of a windowsill and falls past the window below. you may ignore air resistance. it takes the pot .470s to pass the window, which is 1.80m hight. how far is the top of window below the windowsill from w/c the flower pot fell.
When you take a bath, how many kilograms of hot water (51 °C) must you mix with cold water (14°C) so that the temperature of the bath is 36 °C? The total mass of water (hot plus cold) is 192kg. Avoid any heat flow between the water and its externa..
a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 20m/s the stone travels 100 m horizntally and hits the beach. what is the height of the cliff
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