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A 1,110 kg cannon loaded with a 25.0 kg shell is rolling down a 45 degree hill at 15 m/s. A shell is fired from the cannon. The cannon recoils with a speed of 12 m/s. How far will the shell travel in 30 seconds?
At an ambient temperature of 20 ° C,resistor R 1 is adjusted to make V R1 =V 2 =520 mV. Subsequent measurement indicates that R 1 is 520 kΩ. What do you expect the voltages V R1 and V 2 to become at 0 ° C and at 40 ° C?
A battery with an emf of 12.0 V shows a terminal voltage of 11.3V, What is the battery's internal resistance
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold by a mass of 3.245 g, is pressed into a leaf of 3.989 m thickness, what is the area of the..
When I was camping, I needed to bring 300 grams of ice at -15C just to the point of boiling at standard pressure. The ice was in a 200 gram aluminum pan. My stove delivers 850 Watts at 70% efficiency. How long does it take to heat it all up?
Johnny is running home from school to watch his favorite soap opera, "As the Stomach Turns". what direction is Johnny's home from school
1. A college student produces about 119 kcal of heat per hour on the average. What is the rate of energy production in joules? kJ/h 2. How many kilocalories of heat does an expenditure of 135 kJ produce? kcal
A proton is located at a distance of 0.420 m from a point charge of +8.30 micro coulombs. The repulsive electric force moves the proton until it is at a distance of 1.58 m from the charge. Assume that the electric potential energy lost with the syste..
Calculate the mean free path of air molecules at a pressure of 4.50×1013atm and a temperature of 300K. (This pressure is readily attainable in the laboratory.) Model the air molecules as spheres with a radius of 2.00×1010m .
A cable is lifting a construction worker and a crate. The weights of the worker and crate are 965 and 1510 N, respectively. compute the tension in the cable below the worker
A wheel is spinning at 46 rad/s when an acceleration of 0.75 rad/s2 is applied. If the acceleration lasts for 140 revolutions, what is the final angular speed
(a) What is the maximum height above the ground that the ball reaches? (b) How long does it take to reach the maximum height? (c) How long does it take to reach the ground after it reaches its highest point?
How does the deduction of (4-3), which gives the trajectory of a particle moving under the influence of a repulsive inverse square Coulomb force, differ from the deduction of the trajectory of a planet moving under the influence of the gravitation..
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