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Two skaters of unequal mass have the same speed and are moving in the same direction. If the ice exerts the same frictional force on each skater, how will the stopping distances of their bodies compare?
The moon's diameter is 3.48 x 10 6 m, and its mean distance from the earth is 3.85 x 10 8 m. what is the diameter of the moon's image on the screen
a mechanic is raising a car with a hydraulic lift. the smaller piston has radius of 15 cm while larg piston has radius
a ball of mass 2.0 kg is traveling towards you at 15 ms. you are at rest and have a mass of 70 kg.a. assuming you catch
A 5.0 g steel-bullet is fired into a fence post. The initial speed of the bullet is 200 m/s, and when it comes to rest, How much does the bullet's temperature increase
A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye. What is the refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located ..
A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s, what is the position of the block when its speed is 2.5 m/s
Two capacitors, C1 = 19.0 µF and C2 = 30.0 µF, are connected in series, and a 3.0 V battery is connected across them. Find the equivalent capacitance, and the energy contained in this equivalent capacitor.
A 1625 kg car, having run out of gas, is at rest on a level surface. If the person applies a force of 765 kg m/s^2 for 8 seconds, how much work did he do on the car
You are doing a double-slit experiment with two different colors. You notice that the second-order bright fringe using 680-nm red light is in the same place as the third-order bright fringe of the other color. What is the wavelength of the color
An RC circuit is formed with connecting a 7 ohm resistor and a 25 mu F capacitor in series with AC voltage generators. The frequency of the generator is 500Hz if the effective (rms) intensity of the current in the circuit is 2.75 what is the effectiv..
A 50 kg projectile is fired over level land at an angle of 30 degrees above the horizontal with a muzzle velocity of 210 m/s. How much energy was released during the explosion
a person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 30.0deg above the snow. the
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