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.
Make a plot of the acceleration of a ball that is thrown upward at 20 m/s subject to gravitation alone (no drag). Assume upward is the +y direction (and downward negative y).
Lab Assignment #3
Vectors
2. Determine the magnitude and sense of the forces in cables A and B.
30°
30°
300KN
3. Determine the forces in members A and B of the following structure.
30°
B
200kN
Name:
TA:
4. Determine the resultant of the three coplanar forces using vectors. F₁ =500N,
F₂-800N, F, 900N, 0,-30°, 62-50°
30°
50°
F₁ = 500N
= 900N
F₂ = 800N
Lab Assignment #3
Vectors
Name:
TA:
1. With the equipment provided in the lab, determine the magnitude of vector A so
the system is in static equilibrium. Perform the experiment as per the figure below
and compare the calculated values with the numbers from the spring scale that
corresponds to vector A.
A
Case 1:
Vector B 40g
Vector C 20g
0 = 30°
Vector A = ?
Case 2:
Vector B 50g
Vector C = 40g
0 = 53°
Vector A ?
Case 3:
Vector B 50g
Vector C 30g
0 = 37°
Vector A = ?
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