3. If substance A has half the index of refraction of substance B, which is (most likely) more dense
Answers
Answer:
The correct answer is A!
Explanation:
Related Questions
What two advantages do CD’s have over long play records?
This is science
Answers
Answer:
CDs have more than 10 times the dynamic range of LPs and great sound quality. (I hope this helps)
Explanation:
I need the ones that are empty
Answers
Answer:
it is C for both 6 and 8
Explanation:
Answer:
for no. 6 the answer is c, as well as for no. 8
Explanation:
hope this helps!
~mina
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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Ken wants to jump and have some fun too! Barbie loans Ken her bungee cord. Is this a good idea? Explain with evidence and reasoning. (barbie bungee jump lab)
Answers
Answer:To ensure a safe and thrilling jump you will determine the relationship between the jump height and the
number of rubber bands used to make the bungee cord. You must allow your Barbie doll to come as
close to the floor as possible without sustaining any injuries or fatalities.
Explanation:
Malik analyzed three samples to test which element was a metalloid. The table shows the results.
A 7-column table with 3 rows. The first column titled element has entries A, B, C. The second column titled lustrous has entries yes, no, yes. The third column titled brittle has entries no, yes, yes. The fourth column titled how it reacts has entries base, acid, acid, or base. The fifth column titled boiling point (degrees C) have entries not observed, negative 34.04, not observed. The sixth column titled melting point (degrees C) has entries 97.72, not observed, 1413.85. The seventh column titled electrical conductivity has entries high, very low, medium.
Which element (A, B, or C) is most likely a metalloid?
Answers
Answer:
Answer:C is most likely a metalloid
Explanation:
it right in edu 2020
(GIVING BRAINLIEST) do what the following image says.
Answers
Answer:
that pink part that circles around is the pancreas
Answer:
Explanation:
red colour organ is liver
organ attached to oesophagues or brown type coloured organ is stomach
light yellow colur organ is pancreas.
organ which is like boarder at the bottom is large intestine.
inside large intestine is small intestine
Why did the chicken cross the road?
(excepting any answers)
Answers
Answer:
to get to other side
because it could not be stopped by death
The velocity of the rocket is not the same as the speed of the rocket. What is the difference between the velocity of an object and the speed of an object
Answers
The difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.
What is velocity?
Velocity is the time rate of change of displacement.
Speed is the ratio of distance and the time taken to travel that distance.
Thus, the difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.
Learn more about velocity.
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1. Abnormal cell division results in:
A. cancer
B. homeostasis
C. metabolism
D. microbes
2. The carbohydrates, proteins, and minerals that are vital to anorganism's point
survival are found in:
A. oxygen
B. carbon dioxide
C. food
D. water
Answers
Answer:
abormal cell division results in cancer
which types of EM radiation from the sun are most likely to reach Earth's surface, waves with short wavelengths or those with long wavelengths? Explain.
Answers
Which types of EM waves can reach Earth's surface?
Most electromagnetic radiation from space is unable to reach the surface of the Earth. Radio frequencies, visible light and some ultraviolet light makes it to sea level. Astronomers can observe some infrared wavelengths by putting telescopes on mountain tops.
Electromagnetic radiation with wavelengths between 0.01 nanometer and 20 nanometers is referred to as X-rays. Being more energetic than visible light, X-rays are able to penetrate soft tissues but not bones, and so allow us to make images of the shadows of the bones inside us. While X-rays can penetrate a short length of human flesh, they are stopped by the large numbers of atoms in Earth’s atmosphere with which they interact. Thus, X-ray astronomy (like gamma-ray astronomy) could not develop until we invented ways of sending instruments above our atmosphere (Figure 2).
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.
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
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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How is the periodic table by atomic mass
Answers
Place the parts of the human circulatory system in order from highest to lowest degree of internal organization.
→ → →
Answers
Answer: The human circulatory system can be arranged from the highest to the lowest degree of internal organization as follows: Heart, Blood Vessels, Arteries, Veins, and Capillaries.
Explanation: The human circulatory system can be arranged from the highest to the lowest degree of internal organization as follows:
Heart: The heart is a vital organ responsible for pumping oxygenated blood to the body and deoxygenated blood to the lungs. It consists of chambers (atria and ventricles) and valves that regulate blood flow.
Blood Vessels: Blood vessels form a network of tubes that transport blood throughout the body. They can be classified into three types: arteries, veins, and capillaries.
Arteries: Arteries are thick-walled blood vessels that carry oxygenated blood away from the heart to various parts of the body.
Veins: Veins are blood vessels that transport deoxygenated blood from the body back to the heart. They have thinner walls compared to arteries and contain valves to prevent backflow.
Capillaries: Capillaries are tiny, thin-walled blood vessels that connect arteries and veins. They facilitate the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.
Please note that this arrangement is based on the internal organization of the circulatory system, with consideration given to the hierarchical structure and function of each component.
To learn more about the human circulatory system,
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Answer:
Cell, tissue, organ and organ system
Explanation:
The correct order from the lowest to the highest degree of internal organization is the following Cell, tissue, organ, and organ system then at last whole body. It is because the cells are produced in order to form the tissues in the body and in order for an organ to be produced tissues are essential and are formed and in order for a system.
A bowling ball
travels at 2.0 m/s. It has 16 J of kinetic energy. What is the mass of the bowling ball in kilograms?
Answers
Answer:
E=mv2/2 use a relationship
Answer:
8.0 kg
Explanation:
Question 19 of 25
2 Points
A portable electric heater has a resistance of 8 ohms. It plugs into a wall
outlet that is 120 V. How much current, in amps, does it draw?
Answer here
SUBM
Answers
Answer:
Electric Current (I) = 15 Amperes
Explanation:
Given:
Resistance (R) = 8 ohms
Outpet (V) = 120 V
Find:
Current (I) = ?
Computation:
⇒ Electric Current (I) = Outpet (V) / Resistance (R)
⇒ Electric Current (I) = 120 / 8
⇒ Electric Current (I) = 15 Amperes
15 Amperes, current will draw.
Which method of separation of mixtures is vital to life on earth?
filtration, sifting, evaporation, or distillation?
Answers
Answer:
sifting
Explanation:
PLEASE HELP!!!!!!!!Move on to electric force. Blow up the two balloons and knot them. Then tie a thread onto each balloon. Suspend the two balloons using tape so that they’re about six inches apart, and check that they don’t move or interact. Rub both balloons with wool or fur. If wool or fur is not available, rub the balloons on your hair. Do they attract or repel (push away) each other?
Answers
Answer:
they attract
Explanation:
A couple wants to build a holiday cottage, the cottage is not connected to an electricity grid, but the cottage is next to a small river. The river is always flowing and never dries up, the weather is often windy.
Which one should they get to receive energy.
a wind turbine
solar cells
Answers
Answer:
Wind turbine since the place is often windy
Must contain at least 2 to 1 sentence in each answer for the question.
1. What kind of mixture is a solution? A suspension? A colloid? Explain.
2. Fish give off the compound ammonia, which has a pH above 7. To which class of compounds does ammonia belong? Explain using 1 short sentence.
Answers
Answer:
1: A solution is a homogenous mixture of two or more substances where one substance has dissolved the other.
2: Ammonia is formed from the metabolism of protein and is the major waste product of fish.
Explanation:
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Justin and Oscar each hit a baseball with a bat. The baseballs have the same mass, but the ball Justin hits has a greater acceleration. What might be the reason for the greater acceleration of Justin's baseball?
Answers
The acceleration is different in both cases because, the force applied is different. Acceleration is force divided by mass of the object. Thus, Justin had greater force than Oscar.
What is force ?Force is an external agent acting on body to change its motion or deform it. There are various kinds of forces such as frictional force, gravitational force, nuclear force etc.
According to Newton's second law of motion, the force acting on an object is the product of its mass and acceleration.
Thus, F = ma
Hence, as the force increases the body is accelerated more.
With the same mass for the two balls, the force used to hit it was different and thus, the acceleration differs in both cases. Therefore, Justin has the greater force.
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Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?
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
What are the positive and negative effects of the mountain-climbing trade on the local environment and economy? 3-5 sentences, please thx
Answers
True or False: Warm air has greater air pressure than cool air 21 points
Answers
Answer:
False
Explanation:
Warmer air is less dense than cold, which is why warm air tends to rise and cold air sinks. Being acted on by gravity, colder, denser air weighs more and exerts greater pressure per unit area.
Answer:
False
Explanation:
Cool air is denser than warm air, cool air has greater air pressure than warm air.
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
What is the formula to calculate the GPE of an object?
Answers
Answer:
mass x gravity x height
Explanation:
Gravitational potential energy is measured in jules
Write a report on waves. Some questions you might consider are: What makes a wave? Why are some waves small and some large? How are waves classified? Are there different kinds of waves? What happens when a wave meets the shore? Where in the world do you find the best waves for surfing?
Answers
Answer:
The waves have energy that wave back and forth because the waves are never still, they are always moving. There are different types of waves because sometimes (like a tsunami) the waves are affected by other things like the earth plates. Portugal is one of the best places to surf because they have waves that can reach up to 6 to 15 feet high!
Explanation:
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.