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The driver of a van slams on her brakes to avoid colliding with a deer crossing the highway. Describe what happens to the van kinetic energy as it comes to rest?
find the work done by the field on the electron. What is the change in potential energy associated with the electron.
a random sample of 49 selected from a population with a standard deviation of 14 yielded a mean 125. the mean and the
A cannonball is shot (from ground level) with an initial horizontal velocity of 37.0 m/s, What is the speed of the cannonball 3.5 seconds after it was shot
A car traveling 82 km/h is 130 m behind a truck traveling 72 km/h. Find how long will it take the car to reach the truck
Light from a sodium lamp has yellow components at 589.5923 nm and 588.9953 nm. How far apart will these two lines be
Gasoline flows through a horizontal pipeline with a flow rate of 25 ft 3 / min. calculate the pressure in this pipe
find the transformation matrix r that describes a rotation of 90 degrees about an axis from the origin through the
A permanent bar magnet has a field strength of 1T. Assume we have a circular wire loop of radius R=0.50 cm that is carrying a current of I Amperes. What current is necessary to make a magnetic field at the center of the wire loop that is equal to the..
A bicycle wheel is spinning with an angular velocity of 20 rad/s. How long does it take the wheel to come to rest
An aluminum rod is 17.0 cm long at20°C and has a mass of 350 g. If 14000 J of energy is added to the rod by heat, what is the change in length of the rod
A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar. What is the radius of curvature of the mirror?
The heating coil of a hot-water heater has a resistance of 20.0 and operates at 210 V. If electrical energy costs $0.080/kWh, what does it cost to raise 290 kg of water in the tank from 15 °C to 74° C.
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