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ICE Princess25 [194]
3 years ago
15

Why are distant objects in the universe moving away from Earth? Because the light they emit is redshifted. Because Earth's gravi

ty pushes them away Because the universe expanding Because of a supernova event
Physics
1 answer:
GarryVolchara [31]3 years ago
4 0

Distant objects in the universe moving away from Earth because the universe is expanding.

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If a 20kg object is moved across the floor and the coefficient of friction is 0.255. What is the frictional force?
Sladkaya [172]

Ff=μN=μmg=0.255*20=5.1 N

5 0
3 years ago
You just calibrated a constant volume gas thermometer. The pressure of the gas inside the thermometer is 294.0 kPa when the ther
Travka [436]

Answer: 361° C

Explanation:

Given

Initial pressure of the gas, P1 = 294 kPa

Final pressure of the gas, P2 = 500 kPa

Initial temperature of the gas, T1 = 100° C = 100 + 273 K = 373 K

Final temperature of the gas, T2 = ?

Let us assume that the gas is an ideal gas, then we use the equation below to solve

T2/T1 = P2/P1

T2 = T1 * (P2/P1)

T2 = (100 + 273) * (500 / 294)

T2 = 373 * (500 / 294)

T2 = 373 * 1.7

T2 = 634 K

T2 = 634 K - 273 K = 361° C

5 0
3 years ago
What does not contain a lens? <br>A.binoculars<br>B.a mirror<br>C. an eye<br>D. a camera
UNO [17]
That would be answer B
hope this helped you
5 0
2 years ago
Dave's sister gets very stressed out during final exam time; however, Dave isn't affected by the stress. What does this illustra
dmitriy555 [2]
The answer is b personal stress
6 0
2 years ago
You're collecting data in BeyondLabz for an object in free fall, subject to air resistance. How do you know when you've collecte
denis23 [38]

Enough data points would have been collected when specific data for upward and downward motion are collected.

<h3>What is a Data point?</h3>

A data point is a discrete unit of information. This information is always unique.

<h3>Free fall</h3>

An object subjected to free fall is under the influence of gravity. An object subjected has different time of motion for upward and downward motion.

Thus, we can conclude that enough data points would have been collected when specific data for upward and downward motion are collected.

Learn more about free fall here: brainly.com/question/10909077

6 0
2 years ago
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