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If a 25-gram bullet with a speed of 330 m/s travels 15 cm into a tree before stopping, what's the average force exerted to stop the bullet?
A 5.30 ball is dropped from a height of 11.5 above one end of a uniform bar that pivots at its center. The bar has mass 8.00 and is 6.20 in length. How high will the other ball go after the collision
The Hoover Dam is 220 meters high and the pressure at the bottom of the dam is 2.2 million Pascals. What is the pressure at 55 meters from the surface in million Pascals
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 37 m/s. At what frequency does the driver of the car hear the siren
Mount McKinley (also called Denali) is the tallest mountain in North America, with a height of 6,200 m above sea level. how much work is done by gravity on the person
a 2.3 kg object attached to an ideal spring is undergoing simple harmonic motion. its displacement is given by function, what is the maximum accleration of the object
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
In a die-casting operation 0.1 kg charges of molten zinc alloy at 410 degrees C are injected at a rate of 120 charges per hour. Calculate the average die temperature after a die-casting operation
A woman using a rocket pack hovers near a balcoy. The mass of the woman with gear is 100 kg and her tanks hold 50 kg of rocket fuel. What rate of fuel consumption is required for hovering
A hiker's trip consists of three segments. Path A is 8.0 km long heading 60degrees north of east. Path B is 7.0km long in a direction due east. Path C is 4.0 km long heading 315 degrees counter clockwise from east.
For the third circuit, consisting of a single battery and two light bulbs in parallel, What is the current through each bulb
A VW Beetle goes from 0 to 102 mi/h with an acceleration of +6.59 m/s2. A top-fuel dragster can go from 0 to 102 mi/h in 1.52 s. What is the acceleration (in m/s2) of the dragster
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