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A power plant burns coal and generates an average of 645.0 MW of electrical power while discharging 1044.90 MW as waste heat. Find the total electrical energy generated by the plant in a 30-day period.
A 1600·kg car traveling with a velocity of 6·m/s north collides head-on with a 3200·kg truck traveling with a velocity of 4·m/s south. What impluse is delivered to the truck by the car
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
why is it advisable to make use of a proper restraining seat rather than hold a child on your lap.
assume you carry a bag of groceries weighing 127 N from your car to your kitchen, a distance of 57 m, without raising or lowering the bag.
A star has a mass of 1.27 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 1.0 x 104light-years, Determine the tangential speed of the star
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What is the highest point in meters that the ball will reach
Calculate the force a piano tuner applies to stretch a steel piano wire 7.70 mm, if the wire is originally 0.850 mm in diameter and 1.30 m long
If the shear stress in steel exceeds about 3.92 × 108 N/m2 , the steel ruptures. Find the shearing force necessary to shear a steel bolt 0.91 cm in diameter
q. two spherical conductors are connected by a long conducting wire and a total charge of 20.0 muc is placed on this
A hare and a tortoise compete in a race over a straight course 1.95 km long. The tortoise crawls at a speed of 0.100 m/s toward the finish line. How far is the tortoise from the finish line when the hare resumes the race
What is the linear speed of Saturn in its orbit about the sun? Give your answer in meters per second
A rock is projected from the top of a building with an initial volocity of 14.5 m/s at an angle of 57 degrees above the horizontal. how tall is the building
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