Figure 37-16 shows a ship (attached to reference frame S') passing us (standing in reference frame S ). A proton is fired at nearly the speed of light along the length of the ship, from the front to the rear. (a) Is the spatial separation ▵ x' between the point at which the proton is fired and the point at which it hits the ship’s rear wall a positive or negative quantity? (b) Is the temporal separation Δ t' between those events a positive or negative quantity? Figure 37-16 Question 2 and Problem 68.
Figure 37-16 shows a ship (attached to reference frame S') passing us (standing in reference frame S ). A proton is fired at nearly the speed of light along the length of the ship, from the front to the rear. (a) Is the spatial separation ▵ x' between the point at which the proton is fired and the point at which it hits the ship’s rear wall a positive or negative quantity? (b) Is the temporal separation Δ t' between those events a positive or negative quantity? Figure 37-16 Question 2 and Problem 68.
Figure 37-16 shows a ship (attached to reference frame S') passing us (standing in reference frame S). A proton is fired at nearly the speed of light along the length of the ship, from the front to the rear. (a) Is the spatial separation ▵x' between the point at which the proton is fired and the point at which it hits the ship’s rear wall a positive or negative quantity? (b) Is the temporal separation Δt' between those events a positive or negative quantity?
Figure 37-16 Question 2 and Problem 68.
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
as a hiker in glacier national park, you need to keep the bears from getting at your food supply. You find a campground that is near an outcropping of ice. Part of the outcropping forms a feta=51.5* slopeup that leads to a verticle cliff. You decide that this is an idea place to hang your food supply out of bear reach. You put all of your food into a burlap sack, tie a rope to the sack, and then tie a bag full of rocks to the other end of the rope to act as an anchor. You currently have 18.5 kg of food left for the rest of your trip, so you put 18.5 kg of rocks in the anchor bag to balance it out. what happens when you lower the food bag over the edge and let go of the anchor bag? Determine the acceleration magnitude a of the two-bag system when you let go of the anchor bag?
2. A thin Nichrome wire is used in an experiment to test Ohm's
law using a power supply ranging from 0 to 12 V in steps of 2 V.
Why isn't the graph of I vs V linear?
1.
Nichrome wire does obey Ohm's law. Explain how that can that be true given the
results above
1. The average KE and temperature in Kelvin of the molecules of a gas are related by the
equation KE = 3/2 KT where k is the Boltzmann constant 1.38 x 10 m² kg s².
The diagram shows the energy levels for a Hydrogen atom.
Energy/eV
0.00
-1.51
3.39
13.58
Use this information to show that Hydrogen at room temperature will not emit light.
2. When hydrogen burns in oxygen 241.8 kJ of energy are released per mole. Show that this
reaction can produce light.
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