What scientific evidence supports the Big Bang theory?
Universe expansion
Redshift
Composition of the universe
All of the above
None of the above
Answers
Answer:A universe expansion
Explanation:
The earliest and most direct observational evidence of the validity of the theory are the expansion of the universe according to Hubble's law (as indicated by the redshifts of galaxies), discovery and measurement of the cosmic microwave background and the relative abundances of light elements produced by BBN.
Related Questions
Your 20-kg brother Mickey is on a see-saw. If you have a mass
of 50-kg and are 2 meters away from the center of the see-
saw, how far out would Mickey have to sit if he wants to apply
the same force onto you that you apply onto him? meters
Answers
Answer:
5
Explanation:
To apply the same force as the person, the brother have to sit at a distance of 5 m.
What is meant by torque ?
Torque is defined as the rotational analogue of force. It is the cross product of force and the displacement of the object.
Here,
Mass of the person, m₁ = 50 kg
Mass of the brother, m₂ = 20 kg
Distance of the person, d₁ = 2 m
For the see-saw to get balanced, the torque applied by the two persons each side must be equal.
τ₁ = τ₂
where τ₁ is the torque applied by the person and τ₂ is that applied by the brother.
So, F₁d₁ = F₂d₂
m₁g x d₁ = m₂g x d₂
m₁d₁ = m₂d₂
Therefore, distance of the brother,
d₂ = m₁d₁/m₂
d₂ = 50 x 2/20
d₂ = 5 m
Hence,
To apply the same force as the person, the brother have to sit at a distance of 5 m.
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A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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How far does a car travel if it exerts 10 N of force and does 5 J of work?
Answers
Answer:
0.5 meters
Explanation:
W=Fd, where W is work, F is force, and d is distance.
5J=10N * x
x= 5J/10N=0.5m
Hope this helps!
Substitute the knowns: 5J= 10 N * d
So you want the Distance(d) to by on its own side so you divide 10 N so 5/10 is 0.5 so the car would travel 0.5 meters
Can someone help me ASAP on this science question
Answers
Let me know if I’m right
Explain your results: How can Earth’s gravity affect the water when the water isn’t actually touching the Earth? Do you think the Moon’s gravity is affecting the water in the beaker? Why or why not? If you were on the Moon, do you think you would feel the pull of Earth’s gravity? Explain
Answers
Answer:
no
Explanation:
because i am not even in the earths atmosphear i am staying on the moon because of the moons gravitational pull, but if i could feel the earths graitational pull there would be alot more junk and other stuff also falling down onto earth.
Answer:
Because the Earth has so much gravity, it can hold water, land, and life in it's atmosphere.
(Not sure what beaker you are talking about, so sorry) But I don't think the moon's gravity would have an effect on a beaker of water because the Earth's gravity is much more than the moon's.
I think you would be able to feel a little bit of Earth's gravity on the moon because the Earth's gravity pulled the moon into orbit, therefore, gravity on Earth my have some effect on the moon.
A student jogs for a mile when their heartbeat starts racing and the student feels too fatigued to keep jogging. The student stopped to rest in response to the body's —
A. external stimulus of fatigue.
B. external stimulus of traveling a mile.
C. internal stimulus of sweating.
D. internal stimulus of a increased heart rate.
Answers
The student stopped to rest in response to the body's internal stimulus of a increased heart rate. That is option D.
What is heart rate?The heart rate is defined as the number of times the heart beats per minute. Depending on the state of the body it can increase or decrease per minute time
During exercise, the heart rate increases during exercise because the body need more oxygen which can be gotten by increased cardiac output.
Therefore, The student stopped to rest in response to the body's internal stimulus of a increased heart rate.
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BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
what type of vehicle is this. and does it have more or less kinetic energy. pls answer the type of vehicle first pls ty.
Answers
Answer:
koenigsegg jesko
Explanation:
Under braking, the kinetic energy recovery system in the Regera can regenerate up to 150 kW of power to recharge the battery during operation.
hoped that helped! :)
Answer:
koenigsegg jesko
Explanation:
and more kanedic energy
HELP ME PLEASE! IF NOT THEN DON'T ANSWER PLEASE. THANK YOU!
Answers
Using the periodic table, determine which element these characteristics MOST LIKELY describe.
A(fluorine) (B iodine ) D (oxygen) C (sodium)
Answers
Answer: A) F
B) I
C) O
D) Na
Explanation: not sure if this is what ur asking for but those are the symbols
How is energy connected? CORRECT ANSWER GETS BRAINILIEST!
a) Energy is connected through chemical bonds
b) Energy is not connected
c) energy is connected through light waves
d) Energy is connected as it constantly moves from one place to another
(Explanation is unnecessary, only answer! Thank you in advance!)
Answers
Explain one way you could set up a tug-of-war that was imbalanced. What did you observe? What did you notice about the forces?
Answers
How has the car affected the way people live? Give three ways
Answers
2. The automobiles (cars) gave people access to jobs, places to live, and services.
3. Being able to travel from one to place to another in just a matter of minutes.
2. companies, like Amazon can deliver packages by car.
3. You can easily listen to music or de stress while in the car.
that 3rd is bad but the other two are good. :)
Hii! please answer this and have a nice day. :)
no bots please.
unrelated answer = report
unrelated comment = report
What is the net force in this image?
A. 15 N
B. 35 N
C. 250 N
D. -15
Answers
Answer:
a
Explanation:
Brandon has a Nissan GTR. He drives 198.5 miles in 2.3 hours. What is his average speed?
Answers
True or False: The Earth’s core is about as hot as the surface of the sun.
Answers
Answer: false
Explanation:
HELP ASAP
The existence of comets provides possible evidence for _____.
solar origin of comets
a young solar system
an ancient solar system
Answers
Why is it important for a peer to review your writing, in addition to reviewing it yourself?You still have the ideas in your head, so you may not notice when they did not make it onto the page.
You will ignore all of the problems in your report because you won’t want to fix the problems.
All of the above
A peer has a better understanding of your topic than you do and can find mistakes.
Answers
Answer:All of the above
Explanation:
Could the snowboarder stop himself in mid-air, even for a moment?
Answers
Answer:
No i dont think so
Explanation:
Pretty sure thats not how it works if he stopped then he would go down because of Gravity.
Answer:
Quite possibly
Explanation:
He maybe could but it would take a bit and he would probably end up just falling after that due to the gravitational pull of the Earth.
PLEASE HELP!!!!
refer to the diagram below, which of the following is the best predictor of what would happen if the distance across section 1 in the diagram were to decrease.
a. the energy would decrease
b. the frequency would increase
c. the amplitude would decrease
d.the wavelength would increase
Answers
Answer:
B
Explanation:
As the wavelengths get closer, the frequency increases.
ex: Ultra Violet has less frequency than xray's because the distance between the waves are longer.
What fraction of the Moon model was always lit up by the light in your model?
Answers
Answer:10
Explanation:
In the context of the Moon model, the fraction of the Moon that was always lit up by the light is half, or 1/2.
The explanation for this is that the Moon model discussed previously most likely depicts the Moon's phases as seen from Earth. The phases of the moon are caused by distinct areas of the lit side of the moon that are visible from Earth at various times during its orbit.
The Sun always illuminates half of the Moon's surface, leaving the other side in darkness. From Earth, we can only see the bright portion; the unlit portion is invisible. Different phases result from variations in the visible fraction of the lighted half of the Moon as it revolves around the Earth.
Therefore, the fraction of the Moon that was always lit up by the light is half, or 1/2.
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1. In Physics, we distinguish between wave motion and particle motion Wave motion
refers to the movement of a wave-like pattern from one location on the medium to
another. When you view a water wave moving along the surface of water, you are
observing wave motion. There is a very obvious movement of a collection of crests and
troughs along the water surface. In the Simple Wave Simulator, there is a collection of
crests and troughs moving through a rope this is wave motion. But there are also three
points on the rope that are colored red. When you observe the motion of these points.
you are observing particle motion - the motion of particles of the rope. Describe the
motion of these particles.
Answers
Answer:
Look at explanation
Explanation:
One of the easier ways to define wave motion is the continuous movement of particles. When we have a rope for example and whip it, the first particle bumps into the second one then into the third and so on and so forth until the end of the rope. Particles can only move up and down or left and right and the vibration caused by each particle is what sets off the wave motion.
WILL RATE BRAINLIEST!!!
When you use electricity in your home,
which resources are powering it?
Research the energy resources used
to power your state’s electrical grid
(that’s what supplies your home with
electricity). In the space below or on
a separate sheet of paper, create an
informative handout to provide to the
people of your state.
Include the following information in your handout:
• Which state do you live in?
• What is the population of your state?
• What percent of the electricity in your state comes from
nonrenewable resources?
• What percent of the electricity in your state comes from
renewable resources?
• What percent of the electricity in your state comes from
nuclear energy?
• Which renewable resource is used the most in your state?
• What is an interesting fact about energy usage in your
state?
I live in United Arab Emarates/Dubai
Answers
Powering Your Home: Understanding Energy Resources in Dubai, United Arab Emirates
Dubai, one of the seven emirates of the United Arab Emirates, is a rapidly growing city with a population of over 3.3 million people. With the increase in population and development, the demand for electricity has also risen significantly. Have you ever wondered where the electricity that powers your home comes from? In this handout, we will provide you with information about the energy resources used to power the electrical grid in Dubai.
Nonrenewable Resources:
Dubai relies heavily on nonrenewable resources such as natural gas and oil to generate electricity. As per Dubai Electricity and Water Authority (DEWA), in 2020, 94% of the electricity generated in Dubai came from natural gas and 6% from coal.
Renewable Resources:
Dubai has been working to diversify its energy mix by investing in renewable resources. According to DEWA, 6% of Dubai's electricity in 2020 was generated from renewable sources, such as solar and waste-to-energy. DEWA has set a target to increase the share of renewable energy in Dubai's energy mix to 75% by 2050.
Nuclear Energy:
Dubai is also investing in nuclear energy to diversify its energy mix. The first nuclear power plant in the UAE, the Barakah Nuclear Energy Plant, started operations in 2020. It is expected to generate 5.6 GW of electricity and will contribute to reducing carbon emissions.
Most Used Renewable Resource:
Dubai has the world's largest single-site solar energy project, the Mohammed bin Rashid Al Maktoum Solar Park. It is a key component of Dubai's clean energy strategy, and its capacity is expected to reach 5 GW by 2030. The solar park uses photovoltaic solar panels to convert sunlight into electricity.
Interesting Fact:
Dubai is home to the world's tallest building, the Burj Khalifa, which has been designed to be energy-efficient. It uses a combination of technologies such as a high-performance glass facade, an efficient air-conditioning system, and a double-decker elevator system that reduces energy consumption by 20%.
Conclusion:
Dubai's energy mix is currently dominated by nonrenewable resources, with natural gas being the primary source of electricity generation. However, the city is making significant strides to increase the share of renewable energy and diversify its energy mix. By investing in nuclear energy and the Mohammed bin Rashid Al Maktoum Solar Park, Dubai is working towards achieving its goal of becoming a sustainable city and reducing its carbon footprint.
Answer: Windmills and solar panels
Explanation: It is used by solar energy from energy and friction with the atmosphere and CO2
Edward deposited $10,000 into a savings account 5 years ago. The simple interest rate is 3%. How much money did earn in interest?
Answers
Please someone help with all of these 3
Answers
Answer: Because they all share the same square root
Explanation:
h = 6.63 × 10−34 J.s = 4.136 × 10-15 eV.s
Answer:
A=12 B=36 C=1 D=36
Explanation:
Now, imagine that you are helping a library move. You are lifting boxes of books onto a cart. Most of the boxes are full of many books, but one of the boxes was closed, only having a few books in it. You go to lift this box, not knowing it has less mass, with the same amount of force as you used to lift the full boxes. How will the acceleration of this box compare to the acceleration of a full box? Newton’s second law of motion tells us that if the force remains constant and the mass is decreased, the object will accelerate at a faster rate. Because the acceleration increases when the mass decreases, we say that acceleration is inversely proportional to mass.
Give an example of a situation where you might use the mathematical formula for Newton's second law to solve a problem. Explain how the formula would be useful in this situation.
Answers
Answer:
25 is it
Explanation:
A skydiver dives from an airplane. Air resistance is measured each second following the skydiver’s jump. Which statement BEST identifies the skydiver’s speed at each second?
PLS HELP QUICK
Answers
Answer: (B) 4 Seconds
Explanation: The Balance of weight and air resistance equals out after 4 seconds giving you your terminal velocity. (the fastest speed you can travel at your given weight and air resistance)
Answer : B. The sjydriver has the fastest speed at 4second.
What is air resistances ?
--Air resistance is a type of friction force.
-- Air resistance, there are not two solid surfaces in contact.
-- Air resistance is the frictional force acting on an object and the air around them.
--This means that friction always pushes in the opposite direction than the skydiver is travelling, therefore slowing the skydiver down.
Concept Used
-- When the skydiver jumps off the plane, their speed would accelerate because the pull of gravity on the person, or their weight force, is greater than the air resistance slowing them down.
-- A person’s weight force will always stay the same.
-- The weight force of the person will equal their air resistance.
-- This would make the skydiver travel at constant speed.
--To travel at constant speed forces have to be equal to zero.
--This constant speed is called terminal velocity
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Fun fact
An apple, potato, and onion all taste the same if you eat them with your nose plugged
<3
Answers
Answer: NICE that is a fun fact and nice 1 day answer streak
Explanation:
Answer:
yes indeed that's the fun fact for day one answer streak.
Explanation:
Have a good rest of your day! :)
what is the answer i need answers now
Answers
Answer:
listening ,communication ,resolution
Explanation:
Do nutrients cause seagrass to grow more in this area? If so, are both nitrogen and phosphorus equally important? Explain your answer.
Answers
Seagrasses are a vital part of the marine ecosystem..
Seagrasses are submerged flowering plants found in shallow marine waters, such as bays and lagoons and along the continental shelf in the Gulf of Mexico. A vital part of the marine ecosystem due to their productivity level, seagrasses provide food, habitat, and nursery areas for numerous vertebrate and invertebrate species. The vast biodiversity and sensitivity to changes in water quality inherent in seagrass communities makes seagrasses an important species to help determine the overall health of coastal ecosystems. Seagrasses perform numerous functions:
Stabilizing the sea bottom
Providing food and habitat for other marine organisms
Maintaining water quality
Supporting local economies