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You drop a 299-g silver figure of a polar bear into the 215-g aluminum cup of a well-insulated calorimeter containing 271 g of liquid water at 22.5°C. The bear\'s initial temperature is 99.1°C. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/(kg·K), 910 J/(kg·K), and 4190 J/(kg·K). Please answer in Celsius!
The electric field at the point x = 5.00 cm and y = 0 points in the positive x direction with a magnitude of 5.00 N/C. Find the location of the point charge
A car moving at 20.0 m/s decelerates at 7.00 m/s2. How far will it travel before stopping
A 120 kg barrel which is initially at rest is rolled down an inclined plane. The friction between the barrel and the surface of the plane is negligible, calculate the barrel's velocity when it reaches the ground level
Explain why heat can only be transferred from a hot object to a cold object and not the other way around.
Theradius changes from 10.0 cm to 20.0 cm in a time of 8.0 s.The magnetic field is 3.0 T. The loop has a resistance of 5.0 ohms. what is thevalue of the current while the radius is changing
If a capacitor has opposite 5.3?C charges on the plates, and an electric field of 2.4kV/mm is desired between the plates, what must each plate's area be
The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. what will be the acceleration of the system
A spring is hung from the ceiling. A 0.459 -kg block is then attached to the free end of the spring. What is the spring constant of the spring
A 0.40-kilogram ball has a speed of 3 meters per second and collides with a stationary 4-kilogram block, what is the total momentum of the ball and block after the collision
A golf ball is a struck with a club. The force in the ball varies from zero when contact is made up to maximum value, What is the mass of the golf ball
A fine metal foil separates one end of two pieces of optically flat glass, as in Fig. 24-33. How thick is the foil
A 0.091 kg solid cylinder with a radius of 1.74 cm, is placed at the top of a 30º inclined plane of height 66.1 cm. determine the speed of the cylinder at the bottom
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