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A car initially traveling at speed 60 mi/h on a horizontal road comes to rest over a distance of 40 meters after the brakes are applied, and the magnitude of the average braking force is 1.1 x 104 N. (This is also the net force, taking all retarding forces into account.)
(a) What is the net work done on the car in stopping it? (Answer in Joules.)
(b) What is the mass of the car?
The speed of a sound in a container of hydrogen is 201K is 1220m/s. what would be the speed of sound if the temperature were raised to 405K? suppose that hydrogen behaves like an ideal gas.
A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section, Calculate the smaller section's pressure
Over the course of a multi-stage 4280-km bicycle race, the front wheel of an athlete's bicycle makes 2.28 106 revolutions. How many revolutions would the wheel have made
An insulated Thermos contains 150cm3 of hot coffee at 83°C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as although..
A 1.43 kg object is held 1.28 m above a relaxed, massless vertical spring with a force constant of 318 N/m. The object is dropped onto the spring. How far does the object compress the spring
make a hypothesis about initial and final momentums before playing with the sim.make a data table for the following
A 0.17- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
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A laser used in a holography experiment has an average output power of 5.25 mW. Calculate the energy (in joules) radiated with each pulse
A car is traveling at 81.9 km/hr. The tires have a radius R = 38.4 cm. What is the angular speed of the tire
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the tip of the saw blade,
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