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Assume a rocket launches with an acceleration of 30.5 m/s^2. Estimate what is the apparent weight of a 92 kilogram astronaut aboard this rocket?
In an LC circuit in which C = 4.0?F the maximum potential difference across tha capacitor during the oscillations is 1.5V and the maximum current through the inductor is 50 mA.
A 1000 resistor is made by wrapping this wire in a spiral around a 3.90 -diameter glass core. How many turns of wire are needed
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
A 14.40 kg block and a 25.3 -kg block are resting on a horizontal frictionless surface. Between the two is squeezed a spring (spring constant = 1108 N/m).
a wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38 at 20degc. if its resistance increases
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.1 rad/s; 45 radians later, its angular speed is 16 rad/s. Calculate (a) the angular acceleration (rad/s2), (b..
A 5-kilogram block is fastened to a vertical spring that has aspring constant of 1,000 newtons per meter. A 3-kilogram blockrests on top of the 5-kilogram block. the blocks are nw pushed down and released so that they oscillate.
At takeoff, a commercial jet has a speed of 60.0 m/s. Its tires have a diameter of 0.850 m. At how many rpm are the tires rotating
A 2.70 uF capacitor is charged to 80 uC and then placed in series with a 6.4 M ohms resistor and an open switch. What is the initial voltage across the capacitor
Coasting along at 8.10 m/s, a 60.0 kilogram bicyclist on an 8.40 kilogram bicycle encounters a small hill. compute how much work was done on the bicyclist and her bike
A helicopter is ascending vertically with a speed of 5.20m/s. at a high of 125m above the earth, a package i dropped from a window. How much time does it take for the package to reach the ground? (Hint: the package's initial speed equals helicopte..
A 0.550 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
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