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1. A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. How many carbon atoms are there compared to gold atoms?
2. On a warm summer day in California it can get as hot as 115oF, and on some cold winter days it can get as cold as -20oF. What are these temperatures in Celsius?
3. An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151 oC?
4. Carbon 12 is defined such that 12g is one mole. So if a diamond is 37.5 g, how many moles of carbon are in it? How many molecules of carbon are in it?
5. 400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater?
6. A 95g cup of tea at 85 oC is poured into a 1.25 L large tub of water at 30 oC . What is the equilibrium temperature?
7. 150 g of ice at -10.5 oC is raised to the melting point and then raised to 76.0 oC. How much heat is added to the system? 8. A distant star is 7000 K and radiates 1.20 x1027 W. What is the star's radius? Assume ε = 1.0.
A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. what is the actual voltage supplied by the battery
A certain gyroscope consists of a uniform disk with a 48 cm radius mounted at the center of an axle that is 12 cm long, what is the precession rate
A square loop 15.0cm on a side has a resistance of 8.05? . It is initially in a 0.395T magnetic field, Calculate the electric energy dissipated in this process
A 30 ohm resistor has a voltage difference of 3 volts across its leads. What is the power being dissapated in the resistor
A 13kg box slides 4 m down the frictionless ramp , then collides with a spring whose spring constant is 180Nm.
Give the force exerted on the bag, to validate your reply.
A 3kg object attached to a spring oscillates on a smooth horizontal surface. calculate the spring force F(t) exerted on the object versus time t.
Conservation of Energy A 100kg skier at the top of a 2km high mountain tucks the whole thing but only gets a final speed of 50m/s
A 13 g bullet traveling 217 m/s penetrates a 2 kg block of wood and emerges cleanly at 153 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
Assuming that the mass of the planet is distributed with spherical symmetry, what is its mass.
Astronauts use a centrifuge to simulate the acceleration of a rocket launch, What is the astronaut's tangential acceleration during the first 20.0s
question1a square membrane with sides of length l uniform mass density per unit area sigma and uniform surface tension
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