Answer:
New technology allowed microscopes to make it easier to view things that had never been seen before, such as cells.
Explanation:
Answer:
BCDE
Explanation:
Laws that implemented the consumers' right to be informed forbid __________.
A.
informative advertising
B.
competitive advertising
C.
misleading advertising
D.
consumer advertising
Laws that implemented the consumers' right to be informed forbid misleading advertising.
Answer is C.
Laws that implemented the consumers' right to be informed forbid misleading advertising.
Answer: Option C
Explanation:
The laws that are implemented to protect consumer’s rights include the things discussed below.
The advertisements about any product should be informative. It should provide valid advertisements about that product. It prohibits the act of advertising falsified information about the product.
Business sellers usually advertise their product with false information to cheat the customers and make them buy their product just to attain profit. They usually aim to sell the product without any advertised usage. So, this kind of act is highly prohibited by the laws of Consumer’s rights.
What is a temporary magnet
A piece of iron that behaves like a magnet when it is touching a permanent magnet.
Can you complete and EXPLAIN please?????:(
Answer:
Explanation:
Well you have the voltages right, and that is no trivial matter. Each one of the resistors in a parallel circuit sees the same input voltages (in this case 6).
Now I think it would be a good idea to fill in the the resistance column.
R1 = 3 ohms
R2 = 6 ohms
R3 = 2 ohms
The total resistance can be calculated in two ways. I'll get around to doing both of them but I'll do the conventional way first. One hint: the total resistance must be smaller than the smallest resistor. Read that sentence over a couple of times. What it means is that it must be less than 2 ohms in a parallel circuit.
1/r1 + 1/r2 + 1/r3 = 1/rt
1/3 + 1/6 + 1/2 = 1/rt
Change all the denominators to 6ths.
2/6 + 1/6 + 3/6 = 1/rt
(2 + 1 + 3)/6 = 6/6 = 1
rt = 1
====================
So the current I is V/R
V = 6
R = 1
Current = V/R = 6/1 = 6 amps.
====================
The current in each resistor is
I1 = V / R1
I1 = 6/3 = 2 amps
I2 = V/R2
I2 = 6/6 = 1 amp
I3 = 6/2 = 3 amps
The total is I1 + I2 + I3 = 2 + 1 + 3 = 6 amps.
======================
Remember I said there was 2 ways of figuring out the total resistance. I did one of them about. Here's the other.
R = V / It
R = 6 / 6
R = 1 ohm just what you got before.
====================
Power
P = V * I
P1 = 6 * 2 = 12 watts
P2 = 6*1 = 6 watts
P3 = 6*3 = 18 watts
Pt = 36 watts.
Pt can be done by using the voltage * the total current
Pt = 6 volts * 6 amps = 36 watts, just what you would expect.
2. A rock is projected upward from the surface of the moon, at time t = 0.0 s, with a velocity of The acceleration due to gravity at the surface of the moon is What is the maximum height of the rock above the surface?
278 m
125 m
245 m
115 m
202 m
Answer:
278m
Explanation:
A rock is projected upward from the surface of the moon, at time t = 0.0 s, with a velocity of The acceleration due to gravity at the surface of the moon is What is the maximum height of the rock above the surface?
A wave has a wavelength of 2.30 m and a frequency of 370.0 Hz. What is the speed of the wave?
Answer:
Speed =
Explanation:
Speed = wavelength × frequency
Speed = 370 × 2.30 = 851m/s
Answer:
851 m/s
Explanation:
just got it right on edge
According to the concept of length contraction, what happens to the length of an object as it approaches the speed of ligh and then slows down, eventually coming to a stop? O It is always observed as contracting It is always observed as the same length O It is observed as expanding and then contracting back to its original length O It is observed as contracting and then expanding back to its original length
Length contraction causes an object moving at a significant fraction of the speed of light to appear shorter along its direction of motion to an outside observer, and when the object stops, it returns to its original length.
According to the concept of length contraction, the length of an object as it approaches the speed of light, observed by someone in a different rest frame, contracts or shortens in the direction of motion. When the object slows down and eventually comes to a stop, it is observed to expand back to its original length. The correct phenomenon that occurs is that it is observed as contracting and then expanding back to its original length.
Atoms from which two elements would form ionic bonds?
Ionic bonds are formed between atoms of metals and nonmetals, resulting in the transfer of electrons from the metal to the nonmetal, creating a stable crystalline compound with zero net charge.
Explanation:Atoms from metals and nonmetals would form ionic bonds. Ionic bonds are electrostatic attractions between positively charged ions, or cations, and negatively charged ions, or anions. These attractions lead to the formation of a crystalline lattice in which the compound has a zero net charge. For example, sodium (Na), a metal, will donate its valence electron to chlorine (Cl), a nonmetal, leading to the formation of Na+ and Cl- ions. These ions will then attract each other, forming NaCl, also known as table salt, which exhibits a stable crystalline structure.
Another example is the formation of magnesium oxide (MgO) when magnesium (Mg), a metal with two valence electrons, reacts with oxygen (O2), a nonmetal with six valence electrons. Magnesium will lose two electrons to become Mg2+, while oxygen will gain those electrons to become O2-. The resulting compound is an arrangement of oppositely charged ions held together by the force of their attraction, resulting in MgO's stable ionic crystalline structure.
Which of the following groups of atoms are most likely to have similar properties?
nickel (28), calcium (20), bromine (35)
aluminum (13), germanium (32), antimony (51)
oxygen (8), selenium (34), tellurium (52)
Answer:
Oxygen, Selenium, Tellurium
Explanation:
Elements in the periodic table are arranged into rows and columns. Rows are called periods and columns are called groups. Elements that fall under the same group have common chemical properties.
Oxygen, selenium and tellurium all fall under the same group, which is Group VI A, or Group 16. This group is called the Oxygen group or Chalcogen Group.
Answer:
c
Explanation:
immature forms of many animals, like Guinea worms, before they morph into adults
Answer:
True
Explanation: If this is a true or false question it is *T*
The immature forms of animals which they are before metamorphosis are the larva.
Explanation:
The larva in plural form is known as the larvae. The eggs are hatch into the form of larva. These larvae grow in different stages which are marked according to the stages as I or II and so on.
After the larval development, when they are ready to be converted into adults, metamorphosis occurs. This process changes the larva into adults. Here the immature form gets converted into mature adult form.
what is the acceleration of an arrow that has a mass of 0.1 kg and a force of 9 N?
please include how to solve it >
Force = Mass x Acceleration
9N = 0.1kg x Acceleration
Acceleration = 9N / 0.1kg
Acceleration = 90 m/s^2
Answer:
Hope it can help you and mark me as a brainlist...
Satellite communication is only possible using
A) analog transmission.
B) digital transmission.
C) sound waves to transmit signal.
D) cellular devices such as phones.
Answer:
its b
Explanation:
Answer:
B) digital transmition
Explanation:
using radio waves to transmit the information.
Which describe the image formed by a plane mirror? Check all that apply. virtual real upside down right-side up larger than the object smaller than the object same size as the object
Final answer:
The image formed by a plane mirror is virtual, upright, and of the same size as the object.
Explanation:
The image formed by a plane mirror exhibits specific characteristics. First and foremost, the image is virtual, meaning it cannot be projected onto a screen because it appears to be behind the mirror. The image is also upright, which means it has the same orientation as the actual object (it is not inverted). Moreover, the image is of the same size as the object, which differentiates it from images formed by curved mirrors that can be either magnified or diminished.
What type of season does Daytona Beach, FL most likely have?
very cold winters
mild winters
very hot summers
no winters
i believe its mild winters
Answer:
Very hot summers.
Explanation:
The temperature of the Daytona Beach of FL is mostly varies within the range of 50° F to 89° F and this temperature is rarely go below 36°F and rarely go above 93°F.
The summers of the Daytona Beach is very long, and the days are very cloudy and hot.
And the winters are very short and the are partly cloudy and warm.
PLEASE HELP ASAP!!
Which of the following diagrams represents a complete parallel circuit?
Answer:
Explanation:bottom left is the answer just did this and the other answer is wrong
Answer:
bottom left
Explanation:
what happens when the temperature of an object decreases
The molecules become more stiff and move slowly
All of the planets in Earth's solar system must follow the same plane of motion. What's this plane called? A. Plane of the ecliptic B. Plane of spherical motion C. Plane of triangulation D. Plane of orbital rotation
Answer:
D. Plane of orbital rotation
Explanation:
The orbital plane of an object orbiting around another is the geometric plane that contains the orbit in question.
By definition, the inclination of a planet in the solar system is the angle between the orbital plane of the solar system and the orbital plane of the Earth.
Final answer:
The plane that all the planets in Earth's solar system must follow is known as the plane of the ecliptic (option A), which is approximately the same plane as Earth's orbit around the Sun.
Explanation:
The plane that all the planets in Earth's solar system must follow is called the plane of the ecliptic. This plane extends through the center of the Sun and the orbit of the Earth. All the planets revolve around the Sun approximately in this plane, and the Earth's axis of rotation is tilted at about 23.5° from being perpendicular to the ecliptic plane. As a result, Earth's rotational axis remains parallel to its previous position as it orbits around the Sun. Conversely, the so-called invariable plane, as discovered by La Place in 1784, is one where the angular momentum vector of the solar system remains constant and is not influenced by the planetary motions. However, for practical purposes, as observed from Earth, the ecliptic is the apparent path of the Sun and planets across the sky.
How much heat is needed to raise the temperature of 50.0 g of water from 277 K to 315 K?
Answer:
You will need 7.953 kJ heat energy to raise the temperature of water from 277K to 315K.
Explanation:
To calculate how much heat is needed to raise the temperature of any substance, you need:
The mass of the substance, m, which for you is 50.0 g
The temperature change that occurs, ΔT, which for you is:
Δ[tex]T=(315-277)K=38K[/tex]
The specific heat capacity of the substance, c,
For water, the value of c is 4.186J/gK
Then, this is the equation you need:
[tex]Q=mc[/tex]ΔT
Where Q is the heat needed
So,
[tex]Q=(50.0g)(4.186J/gK)(38K)=7953.4J=7.9534kJ[/tex]
You need 7.953 kJ to raise the temperature of water from 277K to 315K.
The heat required to raise the temperature of 50.0 g of water from 277 K to 315 K is 7964 joules, using the specific heat capacity of water, which is 4.18 J/g°C and the formula Q = mcΔT.
To calculate the amount of heat required to raise the temperature of water, we use the specific heat capacity of water, which is 4.18 J/g°C. The formula we'll use is Q = mcΔT, where Q is the heat energy, m is the mass of the water, c is the specific heat capacity, and ΔT is the change in temperature.
For 50.0 g of water being heated from 277 K to 315 K, the change in temperature (ΔT) is (315 K - 277 K) = 38 K. Since the Kelvin and Celsius scales are offset by a constant but rise at the same rate, an increase of 1 K is equivalent to an increase of 1 °C. Therefore, the heat energy required can be calculated as follows:
Q = mcΔT
Q = (50.0 g) × (4.18 J/g°C) × (38 °C)
Q = 7964 J
Therefore, 7964 joules of heat energy is needed to raise the temperature of 50.0 g of water from 277 K to 315 K.
What is the correct path of sperm cells through the male reproductive system?
Epididymis, seminiferous tubules, urethra, vas deferens
Seminiferous tubules, epididymis, vas deferens, urethra
Urethra, seminiferous tubules, epididymis, vas deferens
Seminiferous tubules, vas deferens, epididymis, urethra
The correct path of sperm cells through the male reproductive system is seminiferous tubules, epididymis, vas deferens, and then the urethra.
Explanation:The correct path of sperm cells through the male reproductive system is from the seminiferous tubules, where they are formed, to the epididymis, where they mature and are stored. From there, during ejaculation, the sperm move through the vas deferens, which is part of the spermatic cord, towards the ejaculatory duct. Finally, the sperm cells travel through the urethra and are expelled from the body. Thus, the complete path is: Seminiferous tubules, Epididymis, Vas deferens, Urethra.
PLEASE HELP ASAP!!
Which of the following diagrams represents a complete series circuit?
your answer would be The one in the top right corner that looks a bit like this..
Diagrams B represents a complete series circuit. The two bulbs are connected with a series with a battery.
What is series circuit?In the series circuit, the amount of current flowing through any component in a series circuit is the same and the sum of the individual resistances equals the overall resistance of any series circuit.
The voltage in a series circuit, the supply voltage, is equal to the total of the individual voltage drops. The two bulbs are connected with a series with a battery.
Hence, diagrams B represents a complete series circuit.
To learn more about the series circuit, refer to the link;
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Which of the following statements is true?
Question 13 options:
You are exposed to nuclear radiation every day.
Most of the nuclear radiation you are exposed to in the environment is man-made.
Naturally occurring nuclear radiation is called background decay.
All natural radiation is at a level low enough to be safe.
A. You are exposed to nuclear radiation every day.
Answer:
A. You are exposed to nuclear radiation every day.
What causes a bolt of lightning
Answer:
The friction between two or more clouds cause them to heat up then it turns to static electricty and then hits the ground i hope you are happy anfd i hope this is correct :)
-Hello There-
This Is A Great Question That You Asked!
Lightning Is Caused When The Upper Clouds Have A Positive Charge And The Lower Clouds Have A Negative Charge. So When The Negative Charge And Positive Charge Meet That Means Lightning Happens Also When This Happens, The Air Separates Into Ions And Electrons.
Have A Great Day!
which of the following solids will have the highest wave speed? one that has a high level of stiffness combines with low density - one that has a low level of stiffness combined with a low-density - one that has high level of stiffness combined with a high density - one that has low level of stiffness combined with a high density.
Answer: The first option (ONE THAT HAS A HIGH LEVEL OF STIFFNESS COMBINED WITH LOW DENSITY)
Explanation: Low density means volume is high compare to mass and stiffness is about hardness
Answer:
One that has a high level of stiffness combined with low density.
Explanation:
Velocity of wave in a solid = √ Y/σ ; Y is young's modulus of elasticity, or stiffness and σ is the density of the solid medium.
Scientists believe that during the Late Cretaceous period, many small seas dried up and new mountains began to rise. Which would MOST LIKELY cause them to believe the temperature decreased during this time?
A) The absence of fossils of warm-weather plants.
B) The absence of fossils of many species of fish.
C) The discovery of fossils of fish with small legs.
D) The discovery of fossils of warm-weather insects.
Answer:
A) The absence of fossils of warm-weather plants
Explanation:
During the later stages of the Cretaceous period, the climate started to change. From the predominantly warm, tropical and subtropical, the climate started to have more variations, with mountainous climates starting to develop, as well as temperate climate types. This was caused by the movement of the tectonic plates, as it cause lot of changes in the landscape, positions of the continents, movement of the ocean currents, movement of the air masses. One indicator that the climate cooled down is that the fossils of tropical plants are lacking in most of the planet, and they are only limited to the lowest latitudes, while fossils from plants that are much better suited to temperate climates and colder climate are dominating.
Answer:
The absence of fossils of warm-weather plants might cause them to believe that the Earth grew cooler during this time. Tropical plants would not survive in cold temperatures.
What are the complementary colors of magenta? Blue? And cyan?
Answer:
Magneta is a mix of blue and red and is a secondary colour.
Explanation:
As we can see green is the complementary colour of Magneta.Complementary colours are the pairs of colours which when combined cancel each other out. This means that when combined they produce a grayscale colour like white or black .
The complementary colors are opposite on the color wheel, with green being the complement of magenta, yellow the complement of blue, and red the complement of cyan.
The complementary colors on a color wheel are those that are directly opposite to each other. When combined in the additive color system, they produce white light. The complementary color of magenta is green, as magenta is a mixture of blue and red, and green is the opposite of that combination on the color wheel. The complementary color of blue is yellow, which is a mixture of red and green. Lastly, the complementary color of cyan, which is a mixture of blue and green, is red.
An object of mass 80kg moves with a velocity of 4m/s .calculate the kinetic energy of the object
The kinetic energy of an 80kg object moving at a velocity of 4m/s is 640 Joules. This can be calculated using the formula for kinetic energy, which is K = 0.5 × m × v².
Explanation:The kinetic energy of an object can be calculated using the formula K = 0.5 × m × v², where 'K' is the kinetic energy, 'm' is the mass of the object, and 'v' is the velocity of the object. Substituting the provided values into the formula, we have K = 0.5 × 80kg × (4m/s)² = 0.5 × 80kg × 16m²/s² = 640 Joules. Therefore, the kinetic energy of the object is 640 Joules.
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25 POINTS ------------------ (usatestprep)
Two iron balls of different mass are heated to 100°C and dropped in water. If the same amount of heat is lost by the two balls to water, what can be said about the final temperatures of the two balls? (Heat lost = mCpΔT, where m = mass of the object, Cp = specific heat capacity of the material, and ΔT = change in temperature).
A) Both balls will have the same temperature as the heat lost by both balls is the same.
B) Both balls will have the same temperature as the specific heat capacities of both balls are the same.
C) The lighter ball will have a higher temperature because the change of temperature is directly proportional to mass.
D) The heavier ball will have a higher temperature because the change of temperature is inversely proportional to mass.
Answer:
D) The heavier ball will have a higher temperature because the change of temperature is inversely proportional to mass.
Explanation:
As stated in the problem, the amount of heat released by each ball is
[tex]Q=mC_p \Delta T[/tex]
where
m is the mass of the ball
Cp is the specific heat of iron (so, it is equal for both balls)
[tex]\Delta T[/tex] is the change in temperature of each ball
In this problem, we are said that the amount of heat released by the two balls, Q, is the same. Cp is also the same: this means that the product [tex]m\Delta T[/tex] must be the same for the two balls. So, the mass and the change in temperature are inversely proportional: therefore, the heavier ball will have a smaller change in temperature. And since both balls starts from the same temperature, 100 C, this means that the heavier ball will reach a higher temperature than the lighter ball.
Part 1: What are the two groups of planets based on composition?
Part 2: Describe the composition of each group.
The two groups of planets based on their composition are the terrestrial planets, and the jovian planets. The terrestrial planets are small, and their composition is different than that of the jovian planets. The terrestrial planets have a solid iron inner core, liquid iron outer core, silicate mantle, and silicate crust. The jovian planets are also called gas giants because they are much larger and are gassy, not hard as the terrestrial planets. These planets have a silicate inner core, ice outer core, liquid metallic hydrogen layer, liquid hydrogen layer, and on the top gaseous hydrogen.
Answer:
Part 1: The Terrestrial and the Jovian.
Part 2: Terrestrial are hard, rocky and solid while Jovian are composed of gases and have no solid surface.
Explanation:
how high up is a 3kg object that has 300 joules of energy
Answer: 10m (assuming gravity is 10m/s^2)
Explanation:
Energy (gravitational potential) = mass x acceleration due to gravity x change in height
E = mg∆h
300 = 3 x 10 x ∆h
∆h = 10m
what Mathematical formula is used to calculate force?
Answer:
F = m × a
Explanation:
M= Mass
A= Acceleration
F= Force
Final answer:
The main formula for calculating force is F = ma, according to Newton's Second Law of Motion. For forces like gravity and tension, specific adaptations of this principle are applied. Other situations may use formulas derived from the basic principles, depending on the context, such as impulse or material properties.
Explanation:
The mathematical formula most commonly used to calculate force is derived from Newton's Second Law of Motion, which states that force is equal to mass times acceleration (F = ma). When calculating the force of gravity on a mass, the formula F = mg can be used, where 'g' represents the acceleration due to gravity. Additionally, when dealing with the force of tension, it must equal the force of gravity plus any force necessary to accelerate the mass. Note that for the calculation of normal force and tension force, if it is not given, Newton's 2nd Law should be applied.
Relativistic force considers force as the time derivative of momentum. The average force can also be computed using the concept of impulse, where average force equals the force time curve area divided by the time interval. Furthermore, when dealing with specific situations like the force on a cable, the force can be found using the formula F = (Y * A * ΔL) / L, where 'Y' is the Young's modulus of the material, 'A' is the cross-sectional area, 'ΔL' is the change in length, and 'L' is the original length.
Which model is most similar to that of Aristarchus?
Answer:The first one , option a
Explanation:
Answer:
A. First one with Sun at the center.
Explanation:
Aristarchus was a Greek scientist who proposed the theory that its not Earth which is fixed, its the Sun that has a fixed position and is placed at center where are all other planets are located at some distance from it and revolve around it.
This theory is referred as "Heliocentric". His theories were even attributed by Nicolaus Copernicus and was even know as Copernicus heliocentrism.