1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erastovalidia [21]
2 years ago
8

Which best describes cosmic microwave background radiation? radiation thought to exist but not yet measured radiation predicted

to exist in millions of years radiation that existed before the big bang leftover radiation from the big bang
Physics
1 answer:
grigory [225]2 years ago
8 0

Answer:  leftover radiation from the big bang

Microwave background radiation is a form of electromagnetic radiation that is present in the whole universe and completely fills it.

Its frequency belongs to the microwaves range and is one of the main demonstrations of the of the Big Bang theory model.

It is important to note the Big Bang occurred 400,000 years before the events related to the microwave cosmic radiation, this means the Big Bang occurred first.

You might be interested in
Select the statement that best describes how the forces relate. (2 points)
Anarel [89]
"D. Magnetic and electrical forces are similar because they are both related to the interactions between charged particles" best describes how the forces relate.
4 0
3 years ago
Read 2 more answers
Skid Marx set the world record for acceleration as he went from zero to 10 m/s in 3 seconds. How far did he travel in that time?
iren [92.7K]

Answer:

12000 miles per hour

Explanation:

If skid Marx went from zero to 10 miles in 3 seconds the his speed would have been 12000 miles per hour.

8 0
3 years ago
Which term describes the time it takes for half of a radioactive elements atoms to decay?
devlian [24]
I think that is half-life
6 0
3 years ago
A textbook of mass 2.10 kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose d
Lilit [14]

Answer:

the tension in the part of the cord attached to the textbook is 7.4989 N

Explanation:

Given the data in the question;

As illustrated in the image below;

first we determine the value of the acceleration,

along vertical direction; we use the second equation of motion;

y = ut + \frac{1}{2}a_yt²

we substitute;

0 m/s for u, 1.29 m for y, 0.850 s for t,

1.29 = 0×0.850  + \frac{1}{2}×a_y×(0.850)²

1.29 = 0.36125a_y

a_y = 1.29 / 0.36125

a_y = 3.5709 m/s²

Now when the text book is moving with acceleration , the dynamic equation will be;

T₁ = m₁a_y

where m₁ is the mass of the text book ( 2.10 kg )

a_y is the vertical acceleration ( 3.5709 m/s² )

so we substitute

T₁ = 2.10 × 3.5709

T₁ = 7.4989 N

Therefore, the tension in the part of the cord attached to the textbook is 7.4989 N

3 0
2 years ago
A migrating bird can travel at a speed of 30 m/s. How far will it travel in 25 minutes at this speed? Give your answer in metres
Nady [450]

Answer:

It will travel 45 km (45000 m)

Explanation:

25 minutes is equal to 1500 seconds (25*60=1500)

distance=speed*time

distance=30m/s * 1500s = 45000 m = 45 km

7 0
1 year ago
Other questions:
  • An underground tunnel has two openings, with one opening a few meters higher than the other. If air moves past the higher openin
    10·1 answer
  • Space satellites in the inner solar system (such as those in orbit around Earth) are often powered by solar panels. Satellites t
    10·1 answer
  • Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example
    10·1 answer
  • Help pls ASAP thank you
    7·2 answers
  • Which forces always push in the opposite direction of motion slow stuff down.
    13·2 answers
  • Explain how wind acts as an agent of erosion and deposition
    10·1 answer
  • What are the worst dangers of mixing bleach and ammonia-based cleaning solutions?
    15·1 answer
  • Ocean waves are hitting a beach at a rate of 3.2 Hz. What is the period of the waves? (2 decimal places)
    12·1 answer
  • Which of the following is a correct equation for total energy?
    14·2 answers
  • State Newton's first law of motion.​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!