Simple Nature - Light and Matter

g/Cavendish’s original draw- ing of the apparatus for his experiment, discussed in exam- ple 15. The room was sealed to exclude ...

The minimum velocity required for this to happen is calledes- cape velocity. For speeds above escape velocity, the orbits are op ...

j/A spherical shell of mass Minteracts with a pointlike mass m. the apple. A kilogram of dirt a few feet under his garden in Eng ...

k/The gravitational energy of a massmat a distancesfrom the center of a hollow spherical shell of mass. and since sinθdθoccurs i ...

at its center. We already know that a gravitational energy that varies as− 1 /ris equivalent to a gravitational field proportion ...

l/The actual trajectory of the Apollo 11 spacecraft, A, and the straight-line trajectory, B, assumed in the example. that is dee ...

1 import math 2 def tmoon(vi,ri,rf,n): 3 bigg=6.67e-11 # gravitational constant 4 me=5.97e24 # mass of earth 5 mm=7.35e22 # mass ...

from the earth-moon system. The Apollo 13 mission had to take a free return trajectory after an explosion crippled the spacecraf ...

m/The WMAP probe’s map of the cosmic microwave back- ground is like a “baby picture” of the universe. about systematic errors. T ...

a/A vivid demonstration that heat is a form of motion. A small amount of boiling water is poured into the empty can, which rapid ...

c/The spring’s energy is re- ally due to electrical interactions among atoms. d/All these energy transfor- mations turn out at t ...

e/This figure looks similar to the previous ones, but the scale is a million times smaller. The little balls are the neutrons an ...

Discussion Questions A I’m not making this up. XS Energy Drink has ads that read like this: All the “Energy” ... Without the Sug ...

f/The “greenhouse effect.” Carbon dioxide in the atmo- sphere allows visible light in, but partially blocks the reemitted infrar ...

a/The spring has a minimum- energy length, 1, and energy is required in order to compress or stretch it, 2 and 3. A mass at- tac ...

c/The amplitude would usu- ally be defined as the distance from equilibrium to one extreme of the motion, i.e., half the total t ...

1 import math 2 def u(k,x): 3 return .5kx*2 4 5 def osc(m,k,a,n): 6 x=a 7 v=0 8 dx = -2.a/n 9 t=0 10 e = u(k,x)+.5mv*2 11 for i ...

d/Example 23. The rod piv- ots on the hinge at the bottom. This looks like a cosine function, so let’s see if ax=Acos (ωt+δ) is ...

e/Water in a U-shaped tube. so the energy in the spring is U= 1 2 k ( L b x ) 2 = k L^2 2 b^2 x^2 , and thekwe have to put inT= ...

Problems The symbols √ , , etc. are explained on page 127. 1 Experiments show that the power consumed by a boat’s engine is appr ...