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A 50 kg ice skater is standing at rest on a frozen lake. The friction is neglected. If he throws a 2.0 kg block of ice horizontally with a velocity of 12 m/s, what is his recoil velocity?
A fortune teller's glass ball is 10 cm in diameter. Her secreting is placed 6 m from the edge of the ball. The crystal ball is removed and a thin lens is placed where the center of the ball had been. If the image is still in the same position, what..
As you may have learned when studying the properties of thermal energy, building contractors often install double-glazed windows to prevent thermal energy (\"heat\") from entering/exiting the building, find the shift in path ?x as the light enters ..
An automobile with a mass of 940 kg goes around a curve with a radius of 64m.The coefficient of friction between the tires and the road is 0.700. Illustrate what is the maximum speed with which the car can go around the curve ?
A laser emits a cylindrical beam of light 2.6 mm in diameter. what is the rms value of the electric field in the laser beam
The steering wheel of a car has a radius of 0.14 m, while the steering wheel of a truck has a radius of 0.33 m. The similar force is applied in the same direction to each. What is the ratio of the torque produced by this force in truck to the torque ..
An 18.8 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.78 cm from the end of the screwdriver blade, what force is applied to the lid
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
A solid marble, a solid disk and a hoop have the same mass (M = 1.4 kg) and the same radius. What is the minimum height that the marble, disk and hoop can be released so that all three will safely make it around the loop-the loop
Computer chips etched on circular silicon wafers of thickness 0.200 are sliced from a solid cylindrical silicon crystal of length 24.If each wafer can hold 100 chips, what is the maximum number of chips that can be produced from one entire cylinder?
Young Jeffrey is bored, and decides to throw some things out of the window for fun. But since he is also very curious, he decides to do so in a controlled way. Calculate the magnitude of the average velocity
A projectile is fired from horizontally from a gun that is 45m above flat ground; emerging from the gun with a speed of 250 m/s. How long does the projectile remain in the air
two large parallel conducting plates are 17 cm apart and have charges of equal magnitude and opposite sign on their
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