What is a scalar quantity? Vector quantity? How are these two different?
Answer: Scalar quantity has magnitude but no direction while a vector quantity has both magnitude and direction.
Explanation:
A scalar quantity is a physical quantity that has magnitude but no direction. Examples are
- temperature, measured in Kelvin
- distance, measured in metres
- speed, measured in metres per second
Vector quantity, on the other hand, is a physical quantity that have both magnitude and direction. Examples are:
- velocity, measured in metres per second (m/s)
- force, measured in newton
- displacement, measured in metres
Which type of motion most accurately describes the behavior of a friction -less pendulum?
A) Circular motion
B) Periodic Motion
C) One - dimensional Motion
D) Two - dimensional Motion
Answer:
B) Periodic Motion
Explanation:
When a pendulum is friction-less, i.e there are no damping forces acting on it, its motion will be periodic, i.e it will bob up and down going from potential energy to kinetic energy and back. Thus, the motion of the pendulum can be best described by the term "period motion", hence choice B.
If however, forces do act on the pendulum, and if they acts as to damp the pendulum, it will oscillate less and less as time goes by, and eventually come to a stop (in the real world this damping force is usually air resistance ). And if the force acts in such a way that it increases the oscillations, the pendulum will swing higher and higher, and the system will go haywire! :)
Approximately eleven million people are diagnosed with cancer each year. Thus, many countries, including the United States, spend millions of dollars annually on cancer research. Which of the following statements is best supported by the above information?
A.
The United States is the only country concerned about cancer.
B.
More money should be spent on science.
C.
Social concerns can affect science.
D.
Cancer is the only disease that should be researched.
Answer this question and you get brainliest. Ok, ok
9+10=?
Answer:
C.
Explanation:
(Coronita virus)
17
Answer:
i dont know
Explanation:
The current in a lamp is 0.5 ampere when it is plugged into a standard wall outlet. What is the resistance of the lamp when it is plugged into a standard wall outlet?
The resistance of the lamp plugged in to a standard wall outlet with a current of 0.5 amps is 240 Ω (ohms)
Explanation:
In the United States Of America the standard voltage is 120 v and their frequency is 60 Hz
Standard wall outlet voltage is 120 V
The current in the lamp is 0.5 ampere
Resistance (R) = V/ I
= 120/0.5
= 240Ω (ohms)
Thus the resistance of the lamp plugged in to a standard wall outlet with a current of 0.5 amps is 240 Ω (ohms).
The resistance of the lamp when it is plugged into a standard wall outlet is 240 Ohms.
Given the following data:
Current = 0.5 AmpereNote: In the United States of America, a standard wall outlet supplies a voltage of 120 Volts.
To determine the resistance of the lamp when it is plugged into a standard wall outlet, we would apply Ohm's law:
Ohm's law states that at constant temperature, the current flowing through an electrical circuit is directly proportional to the voltage (potential difference) applied across its terminals and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex]V=IR[/tex]
Where;
V is the voltage measured in Volts.I is the current measured in Ampere.R is the resistance measured in Ohms.Making R the subject of formula, we have:
[tex]R=\frac{V}{I}[/tex]
Substituting the given parameters into the formula, we have;
[tex]R=\frac{120}{0.5}[/tex]
Resistance, R = 240 Ohms
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How do lines of latitude affect how direct or indirect the Sun’s rays are on the Earth?
Answer:
Explanation: We have seasons because Earth's axis – the imaginary line that goes through the Earth and around which the Earth spins — is tilted. It's tilted about 23.5 degrees relative to our plane of orbit (the ecliptic) around the Sun. As we orbit our Sun, our axis always points to the same fixed location in space. Our northern axis points almost directly toward Polaris, the North Star.
What is electrical
energy?
A
holds the atoms in the molecule
B holds protons and neutrons in the nucleus
C energy carried by light
D energy of moving electrons
Help meeeeeeee
30 points
Please help!
SELECT ALL THAT APPLY
The following diagram shows the path of a planet around the Sun. Kepler discovered that ____.
1. area A = area C.
2. the distance from P2 to P3 equals the distance from P5 to position P6
3. the speed in the interval from P4 to be P5 equals the speed in the intervals from P6 to P1
4. the speed on the interval from P4 to P5 is greater than the speed in the interval from P1 to P2
SELECT ALL THAT APPLY
Answer:
I think the answer is 3 and 4
Answer:3 and 4
Explanation:
Which point has the greatest electric potential energy?
Answer:
D on Edge
Explanation:
The molecular compound that has a ratio of two oxygen atoms
to one carbon atom is named
Carbon dioxide
MoleculesA molecule is a chemically bound collection of two or more atoms that are electrically neutral. The absence of an electrical charge distinguishes molecules from ions. A molecule is a group of two or more atoms of the same or distinct elements that are chemically linked together.The chemical molecule with a two-to-one oxygen-to-carbon atom ratio is known as carbon dioxide.Find out more information about the carbon dioxide:
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A student adds 10 mL of hydrochloric acid to a 20 ml sodium hydroxide solution. What will most likely happen to the pH of the solution?
Answer: The pH decreases
Explanation:
- Hydrochloric acid, as an acid has a pH value below 7
- Sodium hydroxide, as an alkali has a pH value above 7.
The alkali neutralizes the acid to give a salt as in the equation:
HCl(aq) + NaOH(aq) --> NaCl(aq) + H2O(l)
Hence, the aqeous sodium chloride, NaCl has a pH value of 7 (neutral) which is then a decrease from the above 7 pH value of the sodium hydroxide solution.
Thus, the pH decreases
Car A and Car B are both driving towards each other. Car A's speedometer shows that it is going 30 mph. Car B's speedometer shows that is going 45 mph. What is Car B's speed relative to Car A?
Select one:
-120 mph
-45 mph
-30 mph
-30 mph
-75 mph
Answer:
120 mph I don't know for sure but still this came in my mind
HELP PLEASE!
Which of the following statements is a true statement about the use of nuclear energy as an alternative energy source?
A. Production of electricity from nuclear energy does not produce dangerous radioactive waste products.
B. Production of electricity from nuclear energy is a lot more expensive than production of energy from fossil fuels.
C. Production of electricity from nuclear energy does not produce greenhouse gases that contribute to global warming.
D. Uranium is a renewable resource
Answer: C
Production of electricity from nuclear energy does not produce greenhouse gases that contribute to global warming
Explanation: Nuclear energy is considered as non-renewable energy source. Although nuclear energy itself is a renewable energy source, the material used in nuclear power plants is not.
Nuclear power emits more greenhouse gases per kilowatt hour than all renewables, including biomass, hydroelectric, solar and wind. Reactors produce significantly less carbon dioxide than all fossil fuels. We can therefore conclude that Production of electricity from nuclear energy does not produce greenhouse gases that contribute to global warming.
The answer is C. Production of electricity from nuclear energy does not produce greenhouse gases that contribute to global warming. Sorry that this is super late, but I still wish you good luck with the rest of your work!
Electrons are transferred in the formation is blank bonds
Answer:Electrons are transferred in the formation is ionic bonds.
Explanation:Why is because ionic bonds are caused by electrons transferring from one atom to another.
Electrons are transferred in the formation of ionic bonds, leading to the creation of oppositely charged ions that attract each other due to electrostatic forces. This process differs from covalent bonding, which involves the sharing of electrons instead of a full transfer.
Electrons are transferred in the formation of ionic bonds. When an electron is transferred from one atom to another, it results in the creation of two oppositely charged ions: a cation, which is positively charged, and an anion, which is negatively charged. These ions are then attracted to each other due to their opposite charges, and this electrostatic attraction is what constitutes the ionic bond.
Unlike covalent bonds, where electrons are shared between atoms, ionic bonding involves a full transfer of electrons. Ionic compounds, such as sodium chloride (NaCl), are typical examples where the sodium atom donates an electron to the chlorine atom, leading to the formation of Na+ and Cl- ions.
Furthermore, ionic bonds are essential in creating compounds with stable electron configurations, often resulting in the formation of a crystalline lattice structure. The strength of the ionic bond is influenced by the charge and size of the ions. Highly charged and smaller ions will tend to form stronger ionic bonds due to the greater electrostatic forces at play.
What is the current in a 160V circuit if the resistance is 2Ω? V= I= R =
Answer:
80 amperes
Explanation:
Current in the circuit = ?
Voltage in the circuit = 160 Volts
Resistance = 2 Ω
Voltage = Current x Resistance
V = IR
160V = I x 2 Ω
I = 160V / 2 Ω
I = 80 Amperes
Therefore the current in the circuit is 80 amperes :)
The current through the 160V circuit with a resistance is 2Ω is 80 Ampere.
What is the current flowing through the circuit?From Ohm's law, the relationship between voltage (V), current (I), and resistance (R) can be expressed as:
V = I × R
Given the parameter:
Voltage V = 160 V
Resistance R = 2 ohms
Current I = ?
Plug the given value into the equation and solve for the current I:
V = I × R
160 = I × 2
I = 160/2
I = 80 Ampere
Therefore, the current I is 80 Ampere.
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ANSWER PLS THIS WILL BRING MY GRADE REALLY HIGH UP Which of the following is not a compound
Question 7 options:
H2
CH4
C2 + H3 + O2 = C2H3O2
H2O
Earthquakes can cause great damage and injury. The solution to this problem is to warn people about possible earthquakes through various forms of media: radio, television, on-line sources. Scientists constantly monitor seismic data to warn people of potential earthquake danger. Which statement BEST summarizes the quality of the solution to this problem?
A) The solution is well designed as early warning can help scientists control earthquakes.
B) The solution is poorly designed since we are not doing anything to stop the destruction of an earthquake.
C) The solution is adequate considering the resources we have; we cannot stop an earthquake but we can alert people so they can protect themselves.
D) The solution is well designed because seismic data can help scientists stop earthquakes as well as warn the human population of the up-coming possible dangers.
Why is your reflection upside down (inverted) on a spoon when you are far away from it
Answer:
because the spoon it is concave
Explanation:
We all know that the Earth cycles through a regular pattern of days and nights.
What causes this pattern?
A) The tilt of the Earth on its axis.
B) The sun turns on, and then goes out.
C) The rotation of the Earth on its axis.
Eliminate
D) The rotation of the sun around the earth.
Which of the following is NOT a
state of matter?
A. gas
B. light
C. liquid
D. solid
Answer:B
Explanation:
Answer:
b
Explanation:
Because light is not a state of matter
Which of the following best describes a direct current?
A. A circuit that has only series or only parallel components
B. Charge that jiggles back and forth very quickly
C. Charge that moves in a single direction
D. A circuit that has both series and parallel components
Best description a direct current is Charge that moves in a single direction.
What is charge?Charged material experiences a force when it is exposed to an electromagnetic field due to the physical characteristic of electric charge. You might have a positive or negative electric charge. Unlike charges attract one another while like charges repel one another.
A positively charged nucleus and one or more negatively charged particles known as electrons make up an atom.
Best description a direct current is Charge that moves in a single direction.
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Answer:
C. Charge that moves in a single direction
Explanation:
Using the periodic table, predict the formulas of stable ionic compounds. Select THREE that are correct.
Bas, barium sulfide
MgCl2, magnesium chloride
KO, potassium oxide
LiBr2, lithium bromide
Na20, sodium oxide
The formulas of stable ionic compounds are:
MgCl₂, magnesium chloride
LiBr₂, lithium bromide
Na₂O, sodium oxide
What are Ionic compounds?They are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions.
The stable ionic compounds out of the given option are:
MgCl₂, magnesium chloride
LiBr₂, lithium bromide
Na₂O, sodium oxide
They are formed when a cation and anion reacts to form a stable compound. It is based on the valency or the charge of the particular ion.
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Meclanical Energy
Which of the following has the most
kinetic energy?
A. stretching a rubber band
B. a jet flying through the air
throwing a paper airplane
D. pitching a baseball
C
INS
SENES
F
11IBRE
IRST
Tilt IIIIIIIIIIIIIIIII
HIPERTIRERERTIF
I
TTI
TETE
BREITE
SAR
THIERRE FEITER
THE
TITRE
NESE
214
HHHHEEE
DELLE HHI
HELEHHHHHHHHHHHHHHHHHHHHH
T
RETILI
TERSEHEHEEEEVE
CETTE
PITHEELIEBTEILULITRIIL
E
ETTERITIE
D EPPS
HELHEFTIRILATEESEEN
HILTI TITULI
HTETITELLEH
TITUTI
TIITTIILIDE
HEHEHE
ETILIHITTE
Answer:
a jet flying through the air making a paper airplane
compare water(H20) to a single atom of oxygen(O) . is each an element or a compound explain
Answer:
compound
Explanation:
A compound is composed of two or more different elements combined together. Water is made up of 2 atoms of hydrogen and one atom of oxygen combined together. Water is therefore made up of two separate elements, which makes it a compound.
Water (H₂O) is a compound made of hydrogen and oxygen in a fixed ratio, while a single atom of oxygen (O) is an element.
Elements consist of only one type of atom, while compounds are made of multiple types of atoms.
Groups of stars that are smaller than galaxies are called
(two words)
Enter the answer
Final answer:
Groups of stars smaller than galaxies are known as star clusters, including open clusters with younger stars, and are much smaller than galaxies like the Milky Way.
Explanation:
Groups of stars that are smaller than galaxies are known as star clusters. These formations range from hundreds to thousands of stars bound together by gravity. Among star clusters, there are two main types: open clusters and globular clusters. The former consists of younger stars that typically have formed out of the same nebula and can include up to a few thousand stars.
Examples include entities like the Jewel Box. On the larger scale, galaxies like the Milky Way are vast collections of stars, with numbers ranging from a few million to many billions. The Milky Way, which contains all the stars we can see in the night sky, has a diameter of about 100,000 light-years, contrasting with the smaller star clusters.
Help ASAP, will give brainliest!!!
Which type of nuclear reaction produces a neutron, energy, and one large nuclei?
A. nuclear fission
B. nuclear fusion
C. thermodynamic reaction
D. combustion
Answer:
A
Explanation:
I think it is Nuclear fission because it can release a large amount of energy.i hope this helps☺️
16. Compared to your weight and mass on Earth, if you were on the moon: *
A. your weight and mass would be less.
B. your weight would be less but your mass would remain the same.
C. your weight would remain the same, but your mass would be less.
D. your weight would increase, but your mass would remain the same.
Answer:
The answer is D.
Explanation:
There is no gravity in Space so that means that it will decrease your weight but not your mass.
Please give BrainiestYour mass would remain the same on the Moon or any other celestial body because it is a constant measure of the matter within you. However, your weight would be less on the Moon due to its weaker gravitational pull compared to Earth. The correct answer, therefore, is B - your weight would be less but your mass would remain the same.
Explanation:When considering the comparison of weight and mass on the Moon versus the Earth, it's important to clarify the difference between the two concepts. Mass is a measure of the amount of matter in an object, and it remains constant regardless of location. On the other hand, weight is the force exerted on an object due to gravity and varies depending on the gravitational pull of the celestial body you're on.
The acceleration due to gravity on the Moon is approximately 1.625 m/s², significantly less than the Earth's gravitational acceleration of 9.80 m/s². So, if you were to move from Earth to the Moon, your mass would remain the same because the quantity of matter you consist of does not change. However, because the Moon's gravity is weaker, you would weigh less. This decrease in weight is attributed to the lower gravitational pull, not to a loss of mass.
The correct answer to the question posed is: B. your weight would be less but your mass would remain the same. This reflects the understanding that while the gravitational force acting on you decreases, the actual matter that you are made of does not change.
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In the Bronsted-Lowry Theory of acids and bases, an acid is this.
In the Brønsted-Lowry theory, an acid is a species that can donate a proton, expanding the definition of acids and bases beyond the Arrhenius theory to include a wider variety of chemical reactions.
Explanation:According to the Brønsted-Lowry theory of acids and bases, an acid is defined as a species that can donate a proton (hydrogen ion, symbolized as H+) to another molecule. This concept was introduced in 1923 when Johannes Brønsted and Thomas Lowry independently proposed that acids and bases should be defined by their ability to donate and accept protons, respectively. This definition broadened the understanding of acids and bases beyond the previous Arrhenius definition, which was limited to substances dissociating in water to provide hydronium and hydroxide ions.
For example, in the reaction between ammonia (NH3) and water (H2O), ammonia acts as a Brønsted-Lowry base by accepting a proton from water, which acts as a Brønsted-Lowry acid. As a result, the ammonium ion (NH4+) and hydroxide ion (OH−) are formed:
NH3(aq) + H2O(l) ⇒ NH4+(aq) + OH−(aq)
What is the dry adiabatic rate?
Answer:
Explanation:
he dry adiabatic rate is the rate at which dry air changes its temperature as a result of expansion or compression. The dry adiabatic rate is 1.0o C/100 meters. Air rises and cools at the dry adiabatic rate up to the level of condensation where dew point temperature is reached.
The dry adiabatic rate is the rate of temperature change in unsaturated air as it ascends or descends in the atmosphere, approximately 1 degree Celsius per 100 meters. This rate applies until the air becomes saturated, after which it cools at the wet adiabatic rate.
Explanation:The dry adiabatic rate, often used in meteorology, refers to the rate at which a parcel of dry or unsaturated air changes temperature as it moves vertically in the atmosphere. This rate is approximately 1 degree Celsius per 100 meters (or 10 degrees Celsius per kilometer) of ascent or descent. However, this rate holds true only for dry or unsaturated air; once air becomes saturated, it cools at a different rate known as the wet adiabatic rate.
To illustrate, imagine a balloon filled with air that's heated and starts to rise. As the balloon ascends, the pressure around it decreases. This causes the air in the balloon to expand and cool. This cooling process continues at the dry adiabatic rate until the air in the balloon becomes saturated.
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IF SOMEONE CAN ANSWER THESE QUESTIONS ILL GIVE BRAINLIEST!!!!! Pls
Answer:
4.Gravity
5.compressible
6.shear force
Explanation:
Which of the following is true for the image formed in a plane mirror? (Select all that applies) The image...
A. is behind the mirror
B. has the same size as the object
C. is formed as the same distance from the mirror as the object
D. is flipped relative to the mirror
E. cannot be seen
Answer:
right options are:
A
B
C
D