Answer:
2 they are equal
Explanation:
A gas at constant temperature is confined to a cylinder with a movable piston. The piston is slowly pushed into the cylinder, decreasing the volume of a gas. The pressure increases. What are the variables in this experiment? (What is changing?)
a. temperature and time
b. time and volume
c. volume and pressure
d. pressure and temperature
The variables in this experiment are pressure and volume. So, option c is correct.
What is Boyle's law ?Boyle's law states that, the pressure of an ideal gas of a given mass is inversely proportional to its volume at constant temperature.
Here,
The gas is confined to a cylinder with a movable piston, at constant temperature. So, the temperature does not changes. The piston of the cylinder is pushed into it such that the volume of the gas decreases.
According to Boyle's law, the pressure of the gas is inversely proportional to the volume of the gas.
So, as the volume of the gas decreases, the pressure will increase.
This is because, since the the volume of the gas in the cylinder is decreasing, the gas molecules will come closer such that the space for their movement is decreased. As a result, the gas molecules collide with each other and thus resulting in an increased pressure, keeping the temperature constant.
Hence,
The variables in this experiment are pressure and volume.
To learn more about Boyle's law, click:
https://brainly.com/question/1437490
#SPJ3
geologists use the blank test to determine the hardness of a mineral
Answer:
Mohs Harness Scale
Explanation:
12.13) PLZ HELP ASAP
I don't know if I am right or wrong
Compare and contrast heat and temperature. Cite examples from the readings to support your comparison. Also cite examples from what you may already know to support your comparison.
Answer:
The term "heat" refers to a type of electricity. Joules are the units of measurement. The kinetic energy of an object's particles, as well as the number of particles, affect its temperature. The average kinetic energy of the particles in a material is defined as temperature.
Explanation:
will give brainliest
Briefly explain Sir Isaac Newton’s prism experiment this text is your resource:
"In 1665, Isaac Newton was a young scientist studying at Cambridge University in England. He was very interested in learning all about light and colors. One bright sunny day, Newton darkened his room and made a hole in his window shutter, allowing just one beam of sunlight to enter the room. He then took a glass prism and placed it in the sunbeam. The result was a spectacular multicolored band of light just like a rainbow. The multicolored band of light is called a color spectrum."
Answer:
His investigations into optics commenced in 1666 at the end of an annus mirabilis when, at home in Wools Thorpe, Lincolnshire due to the bubonic plague which was raging in Cambridge, he investigated gravity, calculus and the laws of motion. He determined to ‘try therewith the celebrated Phenomena of Color’. It had been thought previously that colour was created by the mixing of light and darkness. Newton noted, however, that the blended print on the white page of a book appears grey, not coloured, when viewed from a distance. His experiments in bending light through prisms led, eventually, to the revolutionary discovery of the existence in white light of a mixture of distinct coloured rays, distinguishable when refracted in a prism. In his first experiment he projected the light via a round hole in his shutters.
Explanation:
5) help plz I need help
I don't know if I am right so if I am not can you plz help me
the answer is waning Gibbous
The Waning Gibbous is an intermediary Moon phase. It starts right after the Full Moon, and it lasts until the Third Quarter.
Answer:
the answer is waning gibbous
Help with 3 and check the other ones please :(
Answer:
number 3 The wind because the wind has strong pressure which causes to change peoples directions in where they are going
Explanation:
hope this helped by the way i think you answered b and 4 i don't know if this is a test and i sent this at the wrong time :(
Describe the war’s effect on the South:
I NEED THESE RNNN HELPPPP PLZZZZ
Answer:
If your talking about the civil war, many railroads, farms, and buildings were destroyed. Their financial system was ruined, and confederate money was useless.
Explanation:
What type of device is a coal-fired power plant?
A. A heat pump that uses heat to do work
B. A heat pump that uses work to move heat
C. A heat engine that uses work to move heat
D. A heat engine that uses heat to do work
A coal-fired power plant is a type of heat engine that uses heat to do work. So, the correct option is D.
What is meant by a power plant ?A power plant or power station is defined as a facility designed for producing electrical energy from various other forms of energy.
Here,
A coal-fired power plant is a type of power plant, which is used for the production of electricity by using fuels such as coal, oil, etc.
The coal-fired power plants are the most common type of power station. In these power plants, the main burning materials used are the fossil fuels. The coal is pulverized and then burned into a coal-fired boiler. Then, the boiler water is converted into steam using a heat engine. As a result, this steam is used for the spinning of turbines.
Hence,
A coal-fired power plant is a type of heat engine that uses heat to do work.
To learn more about power plant, click:
https://brainly.com/question/1474542
#SPJ2
Gregor Mendel finished his pea plant experiments in 1863 and published his results in 1866. However, few scientists saw Mendel's paper for three decades. Even after all that time, Mendel's discoveries revolutionized the field of genetics. What did Mendel discover about the principles of heredity? Choose the two statements that apply. Select 2 correct answer(s) Question options: A Individuals get one factor for a trait from each parent. B Genetic material is genes on DNA. C A dominant factor can hide the expression of a recessive factor when both are present. D Mothers contribute factors for some traits while fathers contribute factors for others. if you do not know do not answer or you will be reported selet two answer
Answer:
it would be Individuals get one factor for a trait from each parent. and dominant factor can hide the expression of a recessive factor when both are present.
Mendel discovered about the principles of heredity: A) Individuals get one factor for a trait from each parent and C) A dominant factor can hide the expression of a recessive factor when both are present.
What are Mendel's discoveries revolutionized the field of genetics?Gregor Mendel uncovered the basic principles of inheritance through his study on pea plants. He concluded that genes are inherited from each parent as separate, paired units. Mendel observed how parental genes separated and if they showed up as dominant or recessive qualities in the children. He was aware of the mathematical patterns passed down from one generation to the following.
Mendel's Laws of Heredity are typically expressed as follows:
1) The Law of Segregation: A gene pair determines each inherited trait. So that each sex cell only contains one of a pair of parental genes, parental genes are arbitrarily distributed to the sex cells. Therefore, when sex cells combine to form offspring during fertilisation, they receive one genetic allele from each parent.
2) The Law of Independent Assortment: Different qualities' genes are grouped independently of one another so that inheriting one trait does not affect inheriting another.
3) The Law of Dominance states that an organism with two possible gene variants will express the dominant form.
Learn more about genetics here:
https://brainly.com/question/8868332
#SPJ2
An atom of nitrogen contains seven electrons. Describe the number of
electrons in each energy level in an atom of nitrogen.
Answer:
Two of the electrons are in the first energy level while the other five are in the second energy level.
Explanation:
.
An atom of nitrogen has 2 electrons in first energy level and 5 electrons in second energy level.
What is an energy level?Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.
Energy of the stationary state is given as E= -R
1/n² where R
is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.
They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.
Learn more about energy level,here:
https://brainly.com/question/14205129
#SPJ5
Pls help me I want to get this done
unlike an observational study, an experiment can prove:
A. Cause and effect.
B. The nature of the mind.
C. Correlation.
D. The lack of bias.
help asap pls and thank you
1. James Naismith
2. 1891
3. City College of New York
How does the average speed of the atoms in a substance compare to the average speed of the atoms in a substance with a lower temperature?
Answer:
yes it does
Explanation:
The beam in a cathode ray tube is moved by an electric force. What did
scientists infer about atoms from this experimental result?
O
A. Atoms are small particles that cannot be destroved or divided.
O
B. Atoms have a dense, positively charged center.
O
C. Electrons have more energy the farther they are from the nucleus.
O
D. Atoms are made up of smaller particles.
The beam in a cathode ray tube is moved by an electric force. what scientists inferred about atoms from this experimental result is that atoms are made up of smaller particles. This is further explained below.
What is an atom?Generally, The fundamental of chemistry is the atom. It's the smallest unit of matter that can be split without releasing electrically charged particles.
In conclusion, Scientists deduced from this experimental result that atoms are formed up of smaller particles.
Read more about Atom
https://brainly.com/question/13981855
#SPJ2
During a camping trip, Ming gathers firewood and arranges it in the fire
pit. She sets it on fire, and the result is a roaring blaze. Which statement
best shows all the energy transformations that took place?
Answer: motion, heat and air
Explanation:
How long will it take Matthew to jog 321 m at 5.8m/s?
What is the relationship between an object's mass and an object's inertia?
Referring to Newton's 2nd Law of Motion, what is the relationship between force and acceleration?
What do organisms need in order to reproduce? This is Science Btw
Answer:
Energy. They need energy.
Explanation:
explain how climbing a mountain is similar to hiking from the equator to one of the poles
Climbing a mountain is similar to hiking from the equator to one of the poles is same as in both cases acceleration due to gravity and weight of the object falls as the object goes far.
What is weight?The amount of a body's weight indicates how much gravity is pulling on it. Weight is calculated using the method w = mg. Since weight is a force, it has the same SI unit as a force, which is the Newton (N).
When an object climbs a mountain, altitude of the object increases - that's way - acceleration due to gravity and weight of the object decreases. Similarly, when an object hikes from the equator to one of the poles, acceleration due to gravity and weight of the object decreases. In this way, climbing a mountain is similar to hiking from the equator to one of the poles.
Learn more about weight here:
brainly.com/question/23312072
#SPJ5
2 Physic Questions For 20 Points ✨
1. Pick a planet (other than Earth) and describe 5 characteristics that you know about it. Be as specific as possible.
2. What are various features of the moon and how did they form?
All answers need an explanation
Sometimes people refer to Mars as the Red Planet. Because of the rusty iron in the earth, it is red. Mars features weather, polar ice caps, canyons, volcanoes, and seasons just like Earth. Its atmosphere, which is composed of carbon dioxide, nitrogen, and argon, is extremely thin. These define Mars' characteristics.
These are some of the characteristics of the moon, which is the only natural satellite of Earth and the nearest huge celestial body. It is a spherical rocky body that revolves around Earth in a somewhat eccentric orbit at a mean distance of around 384,000 km (238,600 miles), perhaps with a tiny metallic core. It has a 1,738 km (1,080 miles) equatorial radius.
What is planet ?A celestial body inside the Solar System that meets the following criteria is referred to as a "planet": (a) it must be in orbit around the Sun; (b) it must have enough mass to overcome rigid body forces and take on a hydrostatic equilibrium form that is almost circular; and (c) it must have cleared the area in and around its orbit.
To know more about planet :
https://brainly.com/question/14581221
#SPJ2.
ILL GIVE BRAINLYIST!!
If earth receives more energy than it spends back to space, what can we expect to happen?
A ) The temperature on earth will decrease
B ) The temperature on earth will increase
C ) The temperature on earth will stay the same.
D ) earths energy budget will be balanced.
2. If a earth receives more energy than it emits, what would you expect to happen
A ) The temperature on earth will decrease
B ) The temperature on earth will increase
C ) The temperature on earth will stay the same.
D ) earths energy budget will be balanced.
ANSWER : A.. The temperature on earth will decrease
ik this is a lot but I am super confused, could you pls helpppp
Explanation:
So basically yh first off the number for protons and electrons are the same and to find them is to look at the atomic number because the atomic number is the same as protons and electrons.
To find the neutrons you need to take the actual atomic number from the atomic mass unit.
Hope that helps yh don't stress it.
How can you increase the rate of a reaction? Select all that apply. *
Introduce a catalyst
Increase temperature
Increase the concentration of products
Decrease concentration of reactants
Answer:
- Increase the concentration of the reactants
-increase the temperature
- introduce a catalyst
The rate of reaction is increased by:-
Increase the concentration of the reactantsincrease the temperatureintroduce a catalyst.What is the rate of reaction?The speed at which a chemical reaction occurs is known as the reaction rate or rate of reaction. It is proportional to the rise in product concentration per unit of time and the fall in reactant concentration per unit of time. Reaction times can differ wildly.
A chemical reaction is a procedure that causes one group of chemical substances to change chemically into another.
The rate of a chemical reaction can be increased by Increasing the concentration of the reactant by increasing the temperature and by introducing a catalyst.
Therefore, the rate of reaction can be increased by doing the actions explained above in the answer.
To know more about the rate of reaction follow
https://brainly.com/question/24795637
#SPJ6
1. Space probes have not landed on Pluto yet. Describe three types of information you would collect if you were designing the probe.
2. Pick a planet (other than Earth) and describe 5 characteristics that you know about it. Be as specific as possible.
3. What are the various features of the moon and how did they form?
All answers must come with an explanation.
Answer:
Space probes are made to conduct science experiments. They do not have people on them. Space probes have helped scientists get information about our solar system. Most probes are not designed to return to Earth. Some have landed on other planets! Others have flown past the planets and taken pictures of them for scientists to see. There are even some space probes that go into orbit around other planets and study them for a long time. The information they gather is used to help us understand the weather and other changes which happen on planets other than the Earth. This information is important in helping to plan other space missions such as ones to Mars and to Saturn.
Explanation:
In Mendel’s day, many people thought that offspring inherited a blend of their parents’ traits. For example, they thought that an animal with white fur and an animal with black fur would produce offspring with grey fur. This is called the blending theory of inheritance. How did Mendel show that the blending theory was incorrect?
Answer:
Explanation:In Mendel's time, many people thought that offspring inherited a combination of traits from their parents. For example, they thought that an animal with white fur and an animal with black fur would produce pups with gray fur. This is called the theory of combined inheritance. How did Mendel show that the combination theory was wrong?
What is the role of the nervous system?
Which parts of the body make up the central nervous system?
Name the two main categories of the nervous system.
How do the muscular, skeletal, and nervous systems work together to maintain homeostasis?
What do sensory neurons do?
What do motor neurons do?
Nervous System Video: Please answer each question by filling in the blanks, using the words from the bank below.
Word Bank: brain, instincts, interpreted, organs, reflexes, spinal cord, senses
The central nervous system includes the _______ and _______.
Signals from _______ and the body's _______ are received by the brain and the spinal cord.
Once signals are processed and _______ by the central nervous system, a response is sent back to the body.
A central nervous system is also responsible for programming _______ and _______.
Paraplegic Will Walk Again with Exoskeleton at the World Cup Video:
What animal did scientists study to create the brain–machine interface?
What does the exoskeleton use to power its movements?
What is the importance of this research?
What happens when a light beam passes from air into water? Select all that app
the light wave slows down in water
refracted light bends in the water
some of the light is reflected off of the surface
total internal reflection
the light wave speeds up in water
Answer:
Some light is reflected off of the surface of the water
which material would you use as the metallic core of an electromagnet?
Milk carton assessment graphic
Group of nails assessment graphic
Wooden dowels assessment graphic
Can of cola assessment graphic
Answer:
group of nails assessment graphic,
Explanation:
Which type of wave does the illustration depict?
a longitudinal wave
b surface wave
c transverse wave
