If a ray hits a plane mirror at 45 degrees, what angle will it bounce off at?
Answers
Answer:
up towards space lol it's 190
Explanation:
Related Questions
HELP FAST
What is the fuel for the nuclear fusion reaction that occurs in the Sun?
A. helium
B. oxygen
C. plutonium
D. hydrogen
Answers
Hydrogen is the fuel for the nuclear fusion reaction that occurs in the Sun, therefore the correct answer is option D.
What is nuclear fusion?A reaction known as nuclear fusion occurs when two or more atomic nuclei combine to create new atomic and subatomic particles. Energy is released or absorbed depending on how much mass there is between the reactants and products.
The fusion of hydrogen to form helium is the main source of energy for the sun and other stars of a similar size.
The nuclear force, which brings protons and neutrons together, and the Coulomb force, which makes protons repel one another, interact to produce the energy release associated with the fusion of light elements. Despite being positively charged and repel one another due to the Coulomb force, protons can still stick together, proving the existence of a different, more localized force known as nuclear attraction.
Thus, The correct answer is option D because hydrogen serves as the fuel for the nuclear fusion reaction that takes place in the sun.
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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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What is something that is artificially pressurized to to outside air pressure, no links.
Answers
The anwser is a plane because it protects pilot, crew and passengers from hypoxia.
assuming that voltage remains constant, what happpens to the current in a wire as its diameter decreases?
Answers
Thermal energy is transferred from the warm Gulf Stream ocean water to the cooler air above it by the process of convection?
True or false?
PLEASE HELP MEEE
Answers
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
Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:
Answers
Answer's C
Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
How does the Wikileaks scenario show the negative power of the media?
A. The media compromised national security.
B. The media released popular information.
C. The media got someone in trouble.
D. The media can break the law.
Answers
Answer:
B. The media released popular information.
Explanation:
We do not share the power in our media.
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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Which is a characteristic of the part of the atom marked
"A"?
It contains most of the mass.
It is negatively charged.
It is mostly empty space.
It is composed of electrons.
Answers
Answer:
Order can include highly organized structures such as cells, tissues, organs, and organ systems.
Interaction with the environment is shown by response to stimuli.
The ability to reproduce, grow and develop are defining features of life.
The concepts of biological regulation and maintenance of homeostasis are key to survival and define major properties of life.
Organisms use energy to maintain their metabolic processes.
Populations of organisms evolve to produce individuals that are adapted to their specific environment.
Answer:
Order can include highly organized structures such as cells, tissues, organs, and organ systems.
Explanation:
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
Hello! needing assistants :p would be well appreciated like alot.
*brainlest included *
Finn listed two of the three steps involved in gene therapy. 1. The normal allele is removed from the chromosome. 2. The normal allele is added to the cells of a person with the disorder.
Which step should he also include, and where?
a) The normal allele is copied before step 1.
b) The normal allele is copied after step 1.
c) The unhealthy gene is cut from the DNA before step 2.
d) The unhealthy gene is cut from the DNA after step 2.d
Answers
Answer:
its b
Explanation:
Would a moon much smaller than our moon exert a gravitational pull on objects, too? How about something the size of a mountain? Or a building? A car? An apple? Describe the effect that mass has on the gravitational pull of an object.
Answers
Answer: no
Explanation:
In this activity, you modeled the Sun–Earth–Moon system. If you removed one object from this system model, would the model still explain the changes to the Moon’s appearance?
Answers
The correct answer is NO because the moon appearance is relatively base on the positioning of Sun - Earth - Moon
What is the nature of Moon ?A moon is an opaque object. It does not give or illuminate light on its own, It reflects light from from the sun to the earth. The appearances of moon are;
waxing crescentwaxing gibbouswaning crescentwaning gibbousIn this activity, if you modeled the Sun–Earth–Moon system and you remove one object from this system model, would the model still explain the changes to the Moon’s appearance?
The answer is capital NO.
The reason is simply because the moon appearance is relatively base on the positioning of Sun - Earth - Moon relationship. That is, the moon appearances of waxing crescent, waxing gibbous, waning crescent and waning gibbous, all depend on the position of the Sun, Moon and the earth.
Therefore, If you removed one object from this system model, the model cannot explain the changes to the Moon’s appearance again.
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1. How would increasing the magnitude of the charges on two charged particles and decreasing the distance between the particles affect the strength of the electric force between the particles?
Answers
Answer:
Explanation:
Coulomb's law of electrostatics states that the Coulomb force between two charged objects is proportional to the size of the charges, and inversely proportional to the separation distance. The constant of proportionality is called Coulombs constant. In math words, it says:
\(F=kq_1q_2/r^2\)
If you decrease the magnitude of the charges, the total Coulomb force would also decrease. If the distance between the particles was decreased, the total Coulomb force would increase. A smaller term in the denotator would cause the Coulomb force to increase.
What is a major drawback of nuclear energy? (1 point)
Answers
Answer:
Nuclear waste
Explanation:
It is extremely radioactive and can remain radioactive for hundreds of years.
Nuclear disasters are also very important and one of the major downsides of nuclear energy. Take Chernobyl for an example, the radiation produced by nuclear energy can cause plants animals and humans to suffer from diseases, mutations, and malfunctions. They also cosmetically damage skin and the environment with chemicals.
In your own words, describe the purpose of using a chemical eA green box contains a blue box and a pink box. The blue box contains 2 H subscript 2 O. An arrow then leads in the green box to the pink box, which says 2 H subscript 2 + O subscript 2. Lines lead from labels to parts of the boxes. Label A leads to the beginning of the green box. Label B leads to the blue box. Label C leads to the arrow. Label D leads to the end of the pink box.
Identify each part of this chemical equation, which describes the breakdown of water into hydrogen and oxygen.
A (the entire green box):
B (the blue box):
C (the arrow):
D (the purple box):
quation.
Answers
Answer:
Oxygen , eA(unknown chemical), Hydrogen,
Explanation:
Answer:
A. Chemical Equation, B. Reactants C. Reacts to form, D. Products
Explanation:
I got it correct on edge! :)
can someone help me please
Answers
A semi truck traveling at 80mph
A semi truck has the most mass and weight out of each of the options. Because it going at the same speed as the others, and because it has a higher weight and mass than the others, it requires more kinetic energy.
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
Which factor can increase both potential energy and kinetic energy of an object?
Increase in speed
Increase in mass
Decrease in temperature
Decrease in height from the ground
Answers
rush order
When I increased the mass, the total energy __________ and the speed __________. When I increased the friction, there was too much thermal energy. Due to that the skater didn't make the full loop.
Answers
1) Increases
2) decreases
Explanation:
The reason the speed decreased and energy increased is because as the energy increased the thermal energy (heat) was slowing down the skate board due to friction.
I hope this helped!! :)
If a person weighs 100 pounds what is the gravitational force that is pulling downwards on the person.
Answers
Answer: 444.5N (Newtons)
25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1.maximum kinetic energy minimum GPE
2.GPE is equal to kinetic energy
3 this time there will be maximum GPE
How are electricity and magnets connected?
Answers
Answer:
Magnets are employed to generate electricity.
Explanation:
Magnets' characteristics are employed to generate electricity. Electrons are pulled and pushed by moving magnetic fields. When you move a magnet around a coil of wire, or a coil of wire around a magnet, the electrons in the wire are pushed out and an electrical current is created.
Answer:
they are closely related, because flowing electrons produce some magnetic field and spinning magnets make a flow of electricity, make them interact and it's called electromagnetism
Explanation:
up there↑
rube goldberg machine ideas closing a fridge door
Answers
Here are a few ideas for a Rube Goldberg machine that closes a fridge door:
A marble rolls down a ramp and hits a small lever.
The lever activates a toy car that rolls down a track and hits a domino.
The domino falls and triggers a chain reaction that results in a weight falling onto a lever.
The lever pulls a string that is attached to a door handle.
The door handle turns and the fridge door closes.
Answer:
A marble rolls down a ramp and hits a small lever.
Please select the word from the list that best fits the definition
Gives a pictorial indication of how far and fast an object has moved
a. speed
b. velocity
c. frame of reference
Answers
Answer: the answer is C
Explanation:
hope it helps friend :)
If a ray hits a plane mirror at 45 degrees, what angle will it bounce off at?
Answers
Answer:
up towards space lol it's 190
Explanation:
A car of mass 940kg is traveling at 16m/s calculate the kinetic energy
A-120320 j
B-150965 j
C-179035 j
D-190045 j
Answers
Answer:
B......................................................................
= 1/2x940x16^2
= 120320 j
Explain how astronomers discovered that there are other galaxies beyond the milky way.
Answers
Answer:
Using Cepheid variables, astronomers were able to measure distances to those stars that were in distant galaxies and determine there were other galaxies at great distances.
Explanation:
Apologies if this isn't the right answer, though I hope it is. Have a good day/night!