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A block of ice at 0°C is added to a 150 g aluminum calorimeter cup which holds 210 g of water at 12°C. If all however 2.0 g of ice melt, what was the original mass of the block of ice?
A point source of source emits a tone with a power of 45 W that has a frequency of 429 Hz. calculate the pressure amplitude in Pascals of the sound
A 1300-kg car moving on a horizontal surface has speed v = 55km/h when it strikes a horizontal coiled spring, What is the spring stiffness constant of the spring
A 1.10-mol sample of hydrogen gas is heated at constant pressure from 304 K to 422 K. Calculate the increase in its internal energy
The coefficient of static friction between the sole of an athletic shoe and the basketball court floor is 0.67. how large is the friction force exerted by Ken's shoes on the floor
Three resistors are connected in series across a 11-V power supply. what is the exact potential drop (in volts) across resistor 3
Suppose that your friend jumps from the roof of a garage and lands on the floor. Find how will the impulses the floor exerts on your friend
Two stationary positive point charges, charge 1 of magnitude 3.25 nC and charge 2 of magnitude 1.9nC, are separated by the distance of 60 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
A 5.0-kg block of aluminum is heated from 20degrees celsius to 90 degrees celsius at atm. pressure. estimate the work done by the aluminum
a 86 mm focal-length lens is used to focus an image on the film of a camera. the maximum distance allowed between the
What is the change in voltage a long a 2.5 m long jumper lead made from 2.0 mm diameter copper if it is carrying a current of 90 amperes? How much power is dissipated in the lead?
A cube is constructed of six copper plates joined at the edges by an insulating material. find the electrical potential in the center of the cube
The mass m =1 kg is set up as a pendulum of length 0.6m as shown on the diagram. Initially in the position of h = 0.2m above the lowest point, and the pendulum is given initial speed of 1m/s. What is the largest mass M that might be temporarily lifte..
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