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An open railroad car of mass 2496 kg is coasting with an initial speed of 17 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 6 m/s. How much water (in kilograms) has accumulated in the car?
Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.
Unpolarized light passes through two polaroid sheets. What fraction of the initial light is transmitted
A runner is practicing on a circular track that is 535 m in circumference. From the point farthest to the east on the track, he starts off running due south and follows the track as it curves around toward the west.
Calculate the electric field from four point-charge: +q at -d and -q at -d/2; 2q at d and -2q at d/2 on the z-axis, First calculate the electric potential, and then calculate its radient.
Explain why should the Bryson Corporation act ethically in this situation? Illustrate what are the potentially negative representations of acting unethically?
q1. the specific heat of lead is 128 jkg0c. 300 grams of lead shot at 1000c is mixed with 200 grams of water at 00c in
You drop a 0.490 kg block of copper from a height of 2.90 m. by how much does the temperature of the copper increase
What must be the thickness of the liquid layer if normally incident light with? = 504 nm in air is to be strongly reflected
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 33.5 m/s. It then flies a further distance of 46.9 km and its velocity is 43.1 m/s. Find the airplane's acceleration and calculate how much t..
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
A student sits on a rotating stool holding two 3.6-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
What is your displacement after running 2 {rm km} on Strawberry Fields, 1.6 {rm km} on Penny Lane, and 4.8 {rm km} on Abbey Road.
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