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A rocket sled moved down a track at 632 mi/h and came to rest in 1.4 s. determine the negative acceleration and the distance traveled during this negative acceleration?
The ends of a 20cm long, 2.0cm diameter are maintained at 0°C and 100°C, What material is the rod made of
Starting at rest, two students stand on 11.5-kg sleds, which point away from each other on ice, and they pass a 5.50-kg medicine ball back and forth. How fast is the student on the right moving after the pass
Evaluate maximum altitude?
A 30-g silver teaspoon at room temperature 200C is placed into 200 g of hot tea 1000C. No heat escapes the spoon-tea system. You assume that the specic heat of tea is the same as that of water.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.11 m2 and whose thickness is 8 mm. Treat the wall as a slab of the insulating material Styrofoam whose area and thickness are 15 m2 and 0.10 ..
A shopper standing 2.40 m from a convex security mirror sees his image with a magnification of 0.240. What is the focal length of the mirror
Two kids decide to race from one end of a 20 meter long moving sidewalk to the other and back. Phillip runs on the sidewalk at 2.0 meters/sec (relative to the sidewalk). Who wins the race
A reading on a Geiger counter of 0.23 mrad/h is based on assuming that the measured radiation is due to cesium-137, How many ?-rays does the person's body absorb every second
Find the energy transferred in 1 h by conduction through a concrete wall 2.2 m high, 3.90 m long, and 0.20 m thick if one side of the wall is held at 20°C and the other side is at 5°C
Assuming that air resistance exerts a 95 N force on the person during the fall, identify the person's velocity just before hitting the net.
After performing an experiment concerning charging a capacitor Sally noticed that the potential difference across the capacitor reached 2/3 of its final value after 18 seconds. find the time constant for the resistor-capacitor combination
A rock is thrown horizontally with a speed of 16 m/s from a vertical cliff of height 32 m, What is the velocity (magnitude and direction counterclockwise from the +x-axis, which is the initial horizontal direction in which the rock was thrown) of t..
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