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A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 g piece of copper at 65°C. The other sample has a mass of 84 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. Determine the specific heat of the unknown second sample.
An object with total mass mtotal = 14 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg, What is the magnitude of the velocity of the center of mass of the pieces after the collision
If you start with two sinusoidal waves of the same amplitude traveling in phase on a string and then somehow phase-shift one of them by 12.50 wavelengths
The driver of a 1550 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m. Find the net work done on the car
A 89.1-kN car is travelling at 73.1 mph when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car
61 L of a gas at standard temperature (273K) and pressure (101,481 atm) is compressed to 33L. What is the new pressure of the gas
question1a 27 kg chair initially at rest on a horizontal floor requires a 377 n horizontal force to set it in motion.
An ambulance is generating a siren sound at a frequency of 2,400 Hz. The velocity of sound is 345.0 m/s. find the frequency of the siren perceived by the observer
A rectangular loop is made up of 50 turns of wire and has dimensions of 45 x 55 cm. It is located in a uniform 2 T magnetic field. Over a time of 0.3 s, Calculate the average emf induced in the coil
The power output of a cyclist moving at a constant speed of 4.8 m/s on a level road is 140 W. What is the force exerted on the cyclist and the bicycle
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
Theoretical Values for C = 100 microF and R=10 ohm; Resonant Frequency(Linear)= 90 hz, Calculate Resonant Angular Frequency
describe the change in flux through and the induced current in a loop of wire rotated in a uniform magnetic field
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