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A solid aluminum sphere has a radius of 2.34 m and atemperature of 89.0 °C. The sphere is then completely immersedin a pool of water whose temperature is 22.3 °C. The spherecools, while the water temperature remains nearly at 22.3 °C,because the pool is very large. The sphere is weighed in the waterimmediately after being submerged (before it begins to cool) andthen again after cooling to 22.3 °C. Use Archimedes' principleto find the magnitude of the difference between the weights.
A heavy mass in free fall does not fall faster than a light mass. The extra weight is compensated for by extra resistance. A heavy mass on a frictionless plane does not slide down faster than a light mass. A heavy ring and a light ring both roll d..
A parallel plate capacitor has a capacitance of 9.4 ?F when filled with a dielectric. What is the dielectric constant of the dielectric
A 237 kg cart runs into the rear end of a 120 kg cart that is stationary. What is the speed of the moving cart before the collision
The track near the top of your favorite roller coaster has a circular shape with a diameter of 29 m. What is the speed of the roller coaster
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
An airplane goes into a turn 4.0km in radius. If the banking angle required is 24 degrees from the horizontal, what is the plane's speed
Ginny's boat weighs 200 N and travels an unknown distance. If the boat does 2200 joules of work, how far does the boat travel
A 0.058 kg aluminum bullet traveling at 481 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
The charge on a capacitor increases by 21\mu C when the voltage across it increases from 99V to 119V. What is the capacitance of the capacitor
A brick of mass M sits on a rubber pillow of mass m . Together they are sliding to the right at constant velocity on an ice-covered parking lot, Draw a free-body diagram of the brick and identify each force acting on it
Bernie B is walking directly toward the center of a vertical mirror M. How close to the mirror will he be when Sarah S is just able to see him The vertical mirror has a width d = 3.0 m.
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.56 s, and the velocity of the car decreases to + 4.62 m/s. What is the car's displacement
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