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A spacecraft descends vertically near the surface of Planet X. An upward thrust of 26.0 from its engines slows it down at a rate of 1.20, but if an upward thrust of only 14.5 is applied, it speeds up at a rate of 0.80. Apply Newton's second law to each case, slowing down or speeding up, and use this to find the spacecraft's weight near the surface of Planet X.
if you toss a coin straight up while riding in a train where does the coin land when the motion of the train is uniform
Three capacitors, C1, C2 = 2C1 and C3 = 3C1 are connected in parallel to a voltage source of value V. What is the voltage across each capacitor when all three switches are closed
You pull a 12 kg sled across the floor with a strap that is at an angle of 31° above the horizontal with a force 76 N. Determine the magnitude of the acceleration of the sled, given that the coefficient of kinetic friction between the suitcase an..
Two stars located 27 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 66 cm. find the separation between the stars
A student wishes to determine the coeffiecient of static between a block of material and a wooden board. determine the coefficient of kinetic friction
An air-track glider attached to a spring oscillates between the 15 {rm cm} marks and the 57 {rm cm} mark on the track. The glider completes 10 oscillations in 32 {rm s}.
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
A ball player hits a home run, and the baseball just clears a wall 20.6 m high located 121.0 m from home plate. How much time does it take for the ball to reach the wall
A 12.0V dc battery having no appreciable internal resistance, a 146.5? resistor, an 10.6mH inductor, and an open switch are all connected in series. After the switch is closed, what is the maximum energy stored in the inductor
Positive electric charge is distributed in the shape of an infinitely long insulating cylinder of radius R and volumetric charge density ?=?0(1-r/R), Find an expression for the linear charge density
Unpolarized light with an intensity of 760 W / m2 is incident on a polarizer with an unknown axis. compute the angle between the axes of the polarizers
What is the magnitude of an object's average velocity if an object moves from a point with coordinates x = 2.54 m, y = -3.56 m to a point with coordinates x = 7.85 m, y = -6.54 m in a time interval of 2.02 s.
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