Physics, 12.11.2020 21:00 GERIANNCAYER
Read the excerpt from A Black Hole is NOT a Hole.
Have you ever watched the Sun set? After it sinks below the horizon, Earth blocks your view of it. Even though you know it’s still out there in space, you can’t see it. Any and all events on the Sun remain invisible to you for as long as it is below the horizon. If the Sun suddenly turned purple, you wouldn’t see it happen.
In a similar way, once an object enters the extreme gravity zone of a black hole, the object disappears from view. Even though nothing physically blocks our sight, once the object is beyond the boundary of the zone, we cannot see what happens to it. Events beyond the black hole’s "horizon” are invisible to us. Because of this visual effect, scientists named the boundary the "event horizon".
What similarity is explained in this excerpt?
The sun’s disappearance after sunset is similar to the way an object disappears near a black hole.
The sun’s temperature after sunset is similar to the way an object cools near a black hole.
The sun’s color after sunset is similar to the way an object changes color near a black hole.
The sun’s speed after sunset is similar to the way an object changes speed near a black hole.
Answers: 1
Other questions on the subject: Physics
Physics, 21.06.2019 18:30, iliketurtures
Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain
Answers: 2
Physics, 21.06.2019 23:30, jetblackcap
Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.
Answers: 3
Physics, 22.06.2019 06:30, bradleydb222
5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?
Answers: 3
Physics, 22.06.2019 11:30, rwerjekrryery6750
In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque
Answers: 1
You know the right answer?
Read the excerpt from A Black Hole is NOT a Hole.
Have you ever watched the Sun set? After it sinks...
Questions in other subjects:
Mathematics, 12.11.2019 22:31
Mathematics, 12.11.2019 22:31
