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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.
suppose the resistance between the hands is due entirely to the skin. what is the resistivity of skin
An organ pipe open at one end has a length of 60 cm. If the speed of sound in air is 340 m/s, what is the lowest frequency produced by the organ pipe
A small postage stamp is placed in front of a concave mirror (radius = 1.1 m), such that the image distance equals the object distance. (a) What is the object distance
A 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57 . A 22 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in surface of the turntable. What is turn..
A speedboat moves on a lake with initial velocity vector V1x= 9.27m/s and V1y= -2.83m/s, What are the components of the speedboat's final velocity
On a particular afternoon in Houston, the nitrogen (N2) molecules in the air have an rms speed of 511 m/s. What is the rms speed of the carbon dioxide (CO2) molecules
A grinding wheel in the shape of a solid disk is 0.200m in diameter and has a mass of 2.50kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy
At 28.0 m below the surface of the sea (density = 1 025 kg/m3), what is the volume of the bubble just before it breaks the surface
A spherical 3-mi diameter comet impacts the earth with a velocity of 20 mi/s. Calculate the amount of heat released from the impact site
A carton of bananas weighing 35.0 Newton rests on a horizontal surface. Find what minimum horizontal force must the monkey apply to start the carton in motion
A 10-kg bowling ball moving at 4.0 m/s bounces off a spring atabout the same speed that it had before bouncing. What is the change in momentum of the bowling ball
Ultrasound intensity level: Beta = 10Log (I2/I1), I1 and I2 = intensity at different locations/times An ultra sound signal is sent under sea water (v=1530m/s) to detect the location of an object. Determine the location of the object from the source
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