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An object is dropped from rest from aheight of 40 million meters above surface of the earth. If there isno air resistance, what is its speed when it strikes the earth?
The filament of a 127 W (116 V) lightbulb is a tungsten wire 0.05 mm in diameter. How long is the filament
Calculate the maximum value of resistance that can be obtained by combining resistors of 34 Ohms , Calculate the minimum value of resistance
What would have happened to our graphs in this lab if we had a heavier bar?
A person is riding a bicycle, and its wheels have an angular velocity of 13.9 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
A skateboarder, with an initial speed of 5.0 m/s, rolls virtually friction free down a straight incline of length 19 m in 3.3 s. What is the angle of the incline
A 1.35 kg object is moving in the x direction at 16.4 m/s. Just 3.61 s later, it is moving at 28.8 m/s at 36.0^circ to the x axis. What is the magnitude of force applied throughout this time.
The top of Mt. Everest is 8750 m above sea level. Assume that sea level is at an average Earth radius of 6.38×10^6 m. What is the magnitude of gravitational acceleration at the top of Mt. Everest? Mass of the Earth is 5.97×10^24 kg.
A 50.0 kg object slides down a 30o angle slope from rest at a height of 12.0 m. What is the object's speed at the bottom of the slope
A 46.7 g ball of copper has a net charge of 1.5 µC. What fraction of the copper's electrons have been removed
A relaed spring protrudes from an opening 0.0500 meters as shown in Figure A. A 1.00-kg block is found to just force the spring completely into the opening as shown in Figure B. A. Determine the spring constant k. B. How much potential energy is stor..
A 2.65-g copper coin at 21.5°C drops 60.0 m to the ground. (Assume the specific heat of copper is 387 J/kg · °C.) determine the coin's final temperature
An aluminum rod is16.5cm long at 20°C and has a mass of 350 g. If14000J of energy is added to the rod by heat, what is the change in length of the rod
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