Can someone help me please.
Answer:
the words are too small to see
Explanation:
sorry
Which simple machines make up scissors?
A) one lever and one wedge
B) two levers and two wedges
C) one inclined plane and two pulleys
D) two inclined planes and two levers
Why are some incomplete fossils able to be pieced together? Full fossils of large animals can be found together. Hard tissue, like bone, never breaks or chips. Fossils require salt water to be preserved fully. Impressions from the skin can be preserved.
Answer:
Explanation:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
Answer:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains are dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
What is Waves? Please help will give brainliest
Answer:
Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.
Explanation:
hope this helps, I tried to give an easy definition :)
What is the scientific term for rocks formed from lava?
gabbro
rhyolite
extrusive
intrusive
Answer:
Hi! your answer is Extrusive
Please help me por favor :'(
If two objects have different temperatures, heat will flow from the warmer object to the cooler one until _________________________.
A. one reaches a temperature of zero
B. one runs out of energy
C. they reach the same or equal temperature
D. one is absorbed into the other
Why is it necessary to ensure that unreacted chlorine gas is passed into a fume cupboard when reacting with alumnium?
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
What was the low temperature for hurricane Katrina?
Answer: 90 degrees F
Explanation:
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?(1 point)
a. She should drop two balls of the same mass from different Hights.
b.she should drop two balls with different masses from the same Hights
c.she should drop two balls with different masses from different Hights
d.she should drop two balls of the same mass from the same Hights
actinium-226 has a half-life of 29 hours if 100 mg of actinium-226 disintegrates over a period of 58 hours how many mg of actinium-226 will remain
Answer:25 g
Explanation:
in quizlet
What was one was one important impact of Supreme Court's ruling in Bush v. Gore
Answer: the answer is b or c
Explanation:
I took it
IMPORTANT
climate change could cause floods and starvationin diffrent parts of the world
explain how the burning of fossil fuels causes climate change
Answer:
Image result for explain how the burning of fossil fuels causes climate change
When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming.
Explanation:
Answer:
Correct answer: B). Global climate is changing due to burning of fossil fuels and deforestation.
Forest holds a large amount of carbon, plants are known to absorb carbon dioxide from the atmosphere as they grow, that carbon dioxide is stored in plants in the form of carbon in plant's roots, leaves and in the soil. When trees are cut down, that stored carbon is released in the environment in the form of carbon dioxide, which accounts for approximately 18% of global greenhouse gas emission.
The burning of fossil fuel like coal, petroleum, oil, gas for the energy purpose is one of the major contributors for the rising level of carbon dioxide in the atmosphere, which leads to global warming and affect the climate.
Hence, the correct answer would be option B.
Explanation:
If you worked for an oil company what types of evidence would you look for before directing the engineers to start drilling for oil or gas in a given area?
Answer:
If working for an oil company and directed to start drilling for oil or gas in a given area, you would want to gather a variety of types of evidence to support this decision. Some types of evidence to consider include:
Geological evidence: You would want to study the geology of the area, including the type of rock formations present, the depth of the rock layers, and the history of the area's geologic activity. This information can help you determine if the area has the potential for oil or gas reserves.
Geophysical evidence: You would want to use various geophysical tools to gather information about the subsurface of the area, including magnetic surveys, seismic reflection surveys, and gravity surveys. These tools can help you determine the location and size of potential oil or gas deposits.
Well data: You would want to review well data from nearby areas, including the depth of the well, the type of rock formations encountered, and any oil or gas reserves found. This information can help you predict the potential for similar reserves in the area.
Environmental data: You would want to review environmental data, including air and water quality, to assess the potential environmental impact of drilling in the area.
Economic data: You would want to review economic data, including the cost of drilling and the potential revenue from oil or gas production, to determine if drilling in the area is financially feasible.
By gathering and analyzing these types of evidence, you can make a more informed decision about whether or not to direct engineers to start drilling for oil or gas in a given area.
Answer:
conducting thorough geological surveys to identify areas with potential oil or gas reserves. This would involve analyzing rock formations, seismic data, and other geological features to determine the likelihood of oil or gas being present. Additionally, I would recommend reviewing historical drilling records and production data to identify areas that have already shown promise. It is important to ensure that drilling operations are conducted in a safe and environmentally responsible manner to minimize potential harm to the surrounding ecosystems and communities.
Explanation:
What happens to the atoms that make up hydrogen fuel as it burns?
Answer:
When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.
Explanation:
What is the kinetic energy of the 2 kg ball just before it hits the ground, travelling 28 meters per second?
Use this formula: KE=0.5mv²
Kinetic Energy (KE) is measured in Joules (J)
Mass (m) is measured in kilograms (kg)
Velocity (v) is measured in meters per second (m/s)
A) KE = 0.5 x 28 x (2)2 = 556 J
B) KE = 0.5 x 2 x 28 x 2 = 56 J
C) KE = 0.5 x 2 x (28)2 = 784 J
D) KE = 28 x 2 x (0.5)2 = 14 J
Answer:
The correct answer is C) KE = 0.5 x 2 x (28)2 = 784 J.
This is because the kinetic energy of an object is equal to one half times the mass multiplied by velocity squared.
In this case, the mass of the ball is 2 kg and the velocity is 28 m/s, so the equation would be KE = 0.5 x 2 x (28)2 = 784 J.
Answer:
KE = 784 J
Explanation:
ke= 0.5x2kgx28m/s
What is an ellipse please help)
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
What is a substrate?
a molecule that acts as a catalyst
a place on the enzyme where the reaction occurs
a place on the product where the enzyme fits
a reactant that is catalyzed by an enzyme
Answer:
D. a reactant that is catalyzed by an enzyme
Explanation:
um
search engime
What happened when the two substances were combined together in the cup? (highlight one)
The substances changed into different substances.
The substances did not change into different substances.
I am not sure if the substances changed into different substances.
Explain your answer using evidence from the Sim.
Based on evidence from Sim, when two substances were combined they did not change into different substances.
Here the word Sim is used to describe the process simulation. Simulation is defined as when two substances combined they do not change into different substances.
They just combine together and form a new substance.
Let us understand it as the first substance is liquid and the second substance is solid then when we combine both of them they form a new mixture but do not change their property.
The mixture is still liquid but it also has some properties of solid substance.
For more details about Sim,
https://brainly.com/question/31764333
The substances did not change into different substances.
Based on the information provided in the question, there is no evidence or indication of any chemical reaction or change in the substances when they were combined in the cup. The question does not mention any observations or effects that would suggest a chemical transformation.
If there were a chemical reaction or change, it would typically be accompanied by observable signs such as color change, gas production, temperature change, or formation of a precipitate. However, since the question does not provide any evidence or observations of such changes, we can conclude that the substances did not undergo any chemical transformation when combined.
It is important to note that without additional information or details about the substances and their behavior, it is not possible to make definitive conclusions. However, based on the given information, the most reasonable conclusion is that the substances remained unchanged when combined in the cup.
To learn more about substances, here
https://brainly.com/question/13320535
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Which statement is a hypothesis?
A. If an earthworm is given a choice, it will move toward darkness rather than light.
B. Most of the earthworms moved to the shaded area during the experiment.
C. The earthworms must all be the same species.
D. Do earthworms prefer bright light or darkness?
Keesha performed a chemical reaction and the products looked quite different from the reactants. She knew the amount of matter had not changed due to the law of conservation of mass. According to the law of conservation of mass, what happens in a chemical reaction?
Answer:
matter can't change, but mass can differ
Explanation:
so i don't know what the answer would be so have fun with this
Answer:
matter is not created or destoryed and the amount of mass may change after the reation
hope this helps
Explanation:
Hey there! so I have this question in chemistry where they have shown a reaction with Ammonia acid and HCL, so the question to explain the kinetic particle theory.
The experiment, I'm in a hurry so pls be fast! Thanks a lot!!!
What the I haven't even learned this yet
A hydrogen atom is made of one proton and one electron. Electrons orbit the nucleus in
A squares.
B energy levels.
C Bohr dot models.
D atomic structures.
Answer:B i think i hope this helps
Explanation:
Calculate the volume (in cm3
) of 54 g
of water at 1 ∘C
.
Express the volume in cubic centimeters to two significant figures.
Please help asap! Thanks♡♡!
Answer:
1. H - F. (Hydrogen)
2. B - G. (Boron)
3. O - J. (Oxygen)
4. Au - C. (Gold)
5. Co - I. (Cobalt)
6. He - D. (Helium)
7. Na - H. (Sodium)
8. S - A. (Sulfur)
9. K - E. (Potassium)
10. Ag - B. (Silver)
Explanation:
In order to match these together, look at the periodic table and look for the given symbols and their names.
Once you have the PT with you, find the symbols asked and the name of the element should be right below it.
Consider the chemical reaction below. Zn(s) + 2H+(aq) -> Zn2+(aq) + H2(g). Which half reaction correctly represents reduction for this equation?
Answer:
2H⁺(aq) + 2e⁻ → H₂(g)
Explanation:
In a redox reaction, one substance is oxidized (Loosing electrons) and the other substance is reduced (Gaining electrons).
In the reaction:
Zn(s) + 2H⁺(aq) → Zn²⁺(aq) + H₂(g)
The Zn is loosing 2 electrons (From oxidation state = 0 to oxidation state = +2). That means is beeing oxidized.
And the hydrogen is gaining one electron each atom (From oxidation state +1 to oxidation state 0). Hydrogen is beeing reduced.The half-reaction that represents its reduction is:
2H⁺(aq) + 2e⁻ → H₂(g)Answer:
B
Explanation:
what type of lenses do microscopes use which refract the light to a single point, causing the image of the object to appear larger?
What does scientific method mean in science.
Explanation:
the scientific method is a series of steps or procedures that scientists or anyone who has a question follows to answer any question that they may have. (it's in my own words)
In YOUR OPINION, should the United States try to reduce the amount of nonrenewable resources we use to produce electricity? Why?
Answer: Yes because nonrenewable resources will eventually run out and we can transition into a new era of renewable resource use. This transition would also benefit the environment.
Explanation:
this is a in your opinion question so i just gave a basic answer of what i think
Answer:
Yes because renewed sources will eventually run out
Explanation: