WILL GIVE BRAINEST + 500 PTS ... 1.Scientists have evidence that the universe is [expanding/shrinking].

2.Objects moving away from Earth appear [blue/red], and objects moving toward Earth appear [blue/red].

3. Light from most other galaxies appears [blue/red], which makes sense if the universe is [collapsing inward/spreading out].

Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?

Matter that emits no light at any wavelength is called

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?