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A marble of mass 14.6 g is confined to a box 13.2 cm long and moves at a speed of 2 cm/s.
(a) What is the marble's quantum number n?
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of gold from these data
A 5.1- kg concrete block rests on a level table. A 3.6- kg mass is attached to the block by a string passing over a light, find the coefficient of friction between the block and the table
The woman walks West for 15 minutes and travels a distance of 0.6 km, she then turns North and walks 0.4 km in 15 minutes. What is the womans average velocity
FOUR PEOPLE WITH A COMBINED MASS OF 300 KG ARE RIDING IN A 1100 KG CAR. WHEN THEY DRIVE DOWN A WASHBOARD ROAD WITH BUMPS SPACED 5.0M APART, HOW MUCH DOES THE CAR RISE UP ON ITS SPRINGS
a slab ofmass m1 = 40 kg rests on africtionless floor, and a block ofmass m2 = 10 kg rests on top of theslab. Between block and slab, What is the resulting acceleration of the slab
A concert loudspeaker suspended high off the ground emits 42 W of sound power. A small microphone with a 1.0 cm2 area is 43 m from the speaker. (a) What is the sound intensity at the position of the microphone
A 120-V electrical line in a home is connected to a 100-W light bulb, a 180-W television set, a 230-W desktop computer, a 240-W refrigerator and a 1050-W toaster. How much current is flowing in the line?
Light of intensity I0 and polarized horizontally passes through three polarizes. The first and third polarizing axes are horizontal, but the second one is oriented 20.0° to the horizontal. In terms of I0, what is the intensity of the light that pa..
A student wants to lose some weight. He knows that rigorous aerobic activity uses about 700 kcal/h (2900 kJ/h) and that it takes about 2000 kcal per day (8400 kJ) just to support necessary biological functions, at what rate will this student "burn"..
A broken down space ship flies across a soccer field (regulation length=100m) at a speed 0.55c. How long does the pilot measure the field to be
When gasoline is burned, it gives off 46,000 J/gram of heat energy. what is the average horsepower output of the engine
A projectile (mass = 0.28 kilogram) is fired at and embeds itself in a target (mass = 2.02 kilogram). Find what percentage of the projectile incident kinetic energy does the target (with the projectile in it) carry off after being struck
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