PHYSICS HIGH SCHOOL

The ____ states that between 15 and 20 billion years ago, the universe began expanding out of an enormous explosion. A. H-R diagram
B. binary star theory
C. Big Bang theory
D. "big crunch" theory

Answers

Answer 1
Answer: In my opinion, the correct answer among the choices listed above is option C. The Big Bang Theory states that between 15 and 20 billion years ago, the universe began expanding out of an enormous explosion. However, the exact number is approximately 13.8 billion years ago.
Answer 2
Answer:

Answer:

Big Bang theory

Explanation:

The big bang theory describes the beginning of the universe. According this theory, all the matter of the universe was confined at a point and about 15-20 billion years ago, it started expanding out of a huge explosion -the big bang. The universe has been expanding since then. The discovery of cosmic microwave background radiation provides the evidence to this theory.

Thus, the correct option is C.

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If there is no difference in the dry and wet bulb, you can assume that the relative humidity is __________.a. 100%
b. 75%
c. 50%
d. 0% E. It cannot be determined.

Answers

If there is no difference in the dry and wet bulb temperatures,
you can assume that the relative humidity is 100% . . . since
no water was able to evaporate from the wet bulb.

How many electrons does nitrogen (N) need to gain to have a stable outer electron shell?

Answers

it needs 3 electrons to have it stabled

A clever octopus swims 8 1/4km at a speedof 0.5 km/h. How long does the octopus
take to swim this distance in hours and
minutes

Answers

Answer:

33 hours or equivalently: 1980 minutes

Explanation:

Use the formula for movement under constant velocity, as the velocity equal the distance traveled divided by the time it took, and solve for the unknown time (t):

v=(distance)/(t) \nt=(distance)/(v) \nt=(8.25\,\,km)/(0.5 \,\,km/h) \nt = 33 \,\,h

which can also be given in minutes as : 33 x 60 = 1980 minutes

Final answer:

The total time taken by the octopus is 16.5 hours to swim 8 1/4 km, which is equivalent to 16 hours and 30 minutes.

Explanation:

Time is a fundamental concept that measures the progression of events and phenomena in the universe. It is a dimension in which events unfold sequentially, from past to present to future. Time is often measured in seconds, minutes, hours, days, and years and is a crucial component of our understanding of the physical world, providing a framework for organizing and comparing the durations of events and processes.

To find the time it takes for the octopus to swim 8 1/4 km, we divide the distance by the speed.

Time = Distance / Speed

= 8 1/4 km / 0.5 km/h = 16.5 hours.

Therefore, the octopus takes 16.5 hours to swim 8 1/4 km.

Since there are 60 minutes in an hour, we can convert the hours to hours and minutes. 16.5 hours is equivalent to 16 hours and 30 minutes.

Learn more about Time taken to swim a distance here:

brainly.com/question/32743661

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Atomic mass unit

a standard unit of mass used for _____ particies

Answers

Answer:

Atomic particle.

Explanation:

It is used to calculate mass at atom level .

1 amu is the mass of 1 atom of C12 carbon

Joseph lifted a parcel from the floor. If he lifts the same parcel twice as high, then it will have ____________. A) Half the weight B) The same weight C) Twice the weight D) A weight of zero

Answers

Answer: B

Explanation: He lifts the same thing just double the height

Your friend won the race that you were both running. Instead of being gracious, your friend made fun of you for losing, and now you don't want to run anymore. What is this an example of? Positive peer pressure Negative peer pressure Positive peer influence Negative peer influence

Answers

Answer: Option (d) is the correct answer.

Explanation:

When my friend made fun of me for loosing the race then obviously this thing left me with no confidence. Also, I would feel shame for losing.

As a result, i have decided not to run anymore.

This represents an example of negative peer influence as the comments or fun made by my friend has made me come to a negative decision.
negative peer influence
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