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A 1.50 kg iron horseshoe initially at 640°C is dropped into a bucket containing26.0 kg of water at 25.0°C. What is the final temperature? (Ignore the heat capacity of the container,and assume that a negligible amount of water boils away.)
You stand on the shore of a small river that measure 10 meters across. You take your cat and throw it into the middle of the stream. How long did it take the cat to reach you
A diving board length = 5.60 that weighs 250 is supported by two pillars. One pillar is at the left end of the diving board; the other is distance = 1.65 away. Determine the magnitude of the force exerted by the left pillar while an 80.0 diver sta..
A car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo..
A 6.00m long string sustains a three-loop standing wave pattern as shown. The wave speed is 2.00 x 10^2 m/s. What is the frequency of vibration
A diver springs upward from a diving board. At the instant she contacts the water, her speed is 8.90 m/s, and her body is extended at 75.0 degrees with respect to the horizontal surface of the water. Determine her initial velocity
Assuming a typical efficiency for energy use by the body, how many slices of pizza must you eat to walk for 1.5hr at a speed of 5.0 km/hr
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
Calculate the net torque about the asle of the wheel assuming that a friction torque of .40m*N opposes the motion. determine its angular acceleration and angular speed
Find the range of visible wavelengths of light in Plexiglas. (Assume that the range of visible wavelengths of light in air is 380 - 760 nm.)
At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 6.35 m above the water. find the number of revolutions she makes while on the way down
The maximum induced emf in a generator rotating at 249 rpm is 44 V. How fast must the rotor of the generator rotate
From the top of a mountain a hiker looks at the next mountain top in the distance and notes the compass direction of the peak. how far has the hiker walked
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