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10.5 g of copper metal is heated to 100 degrees C. The copper is then placed into a cup that contains 25 g of tap water, initially at 20 C. The final temperature of the mixture is measured and found to be 23 degrees C. Find the specific heat of copper.
A flat copper sheet has a hole with area 0.250m2at room temperature (25?C). what's the hole's new area
The bottom of an aluminum pot has an area of 157 cm2 and a thickness of 3.25 mm. How many watts are needed to boil water at this rate
A comet of mass m, following a trajectory that is a a parabola about the sun, collides with an equal mass at rest, determine the nature of the orbit after the collision
A slingshot consists of a light leather cup containing a stone. The cup is pulled back against two parallel rubber bands. It takes a force of 15 N to stretch either one of these bands 1.0 cm.
A 1800 kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
Find the slit width. compute the coefficient of kinetic friction between the slide and the child.
What are the two main mechanisms that the planet Earth uses to balance water that goes up with the water that comes down over Earth.
A 3-kg steel ball strikes a wall with a speed of 13-m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20s, what is the average force exerted by the wall on the..
Light is emited from an ordinary lightbulb filament in wave-train bursts about 10^-8s in duration. What is the length in space of such wave trains
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations ("hyper gravity") on test pilots and astronauts. In this device, an arm 8.84 {rm m} long rotates about one end in a horizontal plane..
The mass of a robot is 5220 kg. This robot weighs 2650 N more on planet A than it does on planet B. Both planets have the same radius of 2.26 × 107 m
A 0.07 kg bullet traveling at 602 m/s hits a 7.3 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
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