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Two 50 g of ice cubes are dropped into 200g of water in a thermally insulated container. If the water is originally at 25 degrees Celsius, and the ice comes directly from a freezer at -15 degrees Celsius, what is the final temperature at thermal equilibrium? (a) What is the final temperature if merely ice cube is used?
The density of ice is 917 kg/m^3, and the density of sea water is 1025 kg/m^3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2m^3. What is the weight of the heaviest bear that the ice can support without sinking com..
A 150-N sled is pulled up a 28 degree slope at a constant speed by a force of 100N. What is the coefficient of kinetic friction between sled and slope?
A basketball of mass 610g and circumference 76cm is rolling without slipping on a gym floor. Treating ball as a hollow sphere, what fraction of its total kinetic energy is associated with its rotational motion.
Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.026 m in the same way as neutrons, Approximately how many neutrons would fit inside the ball
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 88.0 cm, illustrate what was the speed of the bullet at impact with the block?
two masses are joined together by a massless rod of length 0.8 m. What is the rotational kinetic energy of the system
A 116 g Frisbee is 28 cm in diameter and has about half its mass spread uniformly in a disk, and the other half concentrated in the rim. What is the rotational inertia of the Frisbee
what must be done to increase the velocity of a rocket. Calculate the horizontal force that must be applied to produce an acceleration.
In the fusion of a deuterium nucleus (one proton, and one neutron) with a tritium nucleus (one proton, two netrons), the deuterium nucleus must have enough initial kinetic energy to overcome the repulsion force due to the electrostatic interaction..
A transformer with 1710 turns on the primary and 229 turns on the secondary is used in an electric slot car racing set to reduce the input voltage amplitude of 170 V from the wall output
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, What is the true distance between the points
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 5.20cm left of the equilibrium position, calculate the phase constant
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