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2. A 350 g piece of metal at 100C is dropped into a 100 g aluminum cup containing 500 g of water at 15C. The final temperature of the system is 40C. What is the specific heat of the metal, assuming no heat is exchanged with the surroundings? The specific heat of aluminum is 900 J/kg K, and the specific heat of water is 4186 J/kg K.
A reflecting, spherical Christmas tree ornament has a diameter of 20 cm. A child looks at the ornament from a distance of 40 cm. define the image she sees. Where is the image locate.
A 4.79 crate is suspended from the end of a short vertical rope of negligible mass. An upward force is applied to the end of rope, and the height of the crate above its initial position is given by + (0.61) what is the magnitude of the force when ..
At a time t = 2.60s , a point on the rim of a wheel with a radius of 0.180m has a tangential speed of 55.0m/s as the wheel slows down, Calculate the wheel's constant angular acceleration
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the granite cube be released to give steel cube a spe..
A point particle that has a charge of 18.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 14.8 cm, y = 0. The electric force on a point particle that has a charge of 7.4 µC at x = 29.6 cm, y = 0 is -(19.7)..
A Dodge Caravan begins rolling from rest. Its tires undergo a constant of angular acceleration of 0.34 rad/s^2, What is angular speed of each tire after 3 revolutions
When one marble hit the end of the line of marbles, how many shot off the other end? Describe the momentum of the set of marbles before and after the collision
Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s squared. What magnitude push would cause it to move? What will be its acceleration if you maintaine..
what is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 4.63m and an eyepiece whose focal length is 3.16cm
A certain waffle iron is rated at 0.95 kW when connected to a 120-V source. What current does the waffle iron carry
When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0285 m (1.12 inch) of rain falls over an area of 2.59×106 m2 (one square mile)? (b) If the average energy needed to h..
The displacement of a particle in meters moving along x axis is given by x=18t+5t^2, calculate instantenaous velocity at t=2 seconds and instantaneous accelration
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