HELLLP! PHYSICAL SCIENCE GUYS THANK YOU!!​

HELLLP! PHYSICAL SCIENCE GUYS THANK YOU!!

Answers

Answer 1
i think it is C, hope this helps

Related Questions

Every second the sun gives out 400 million joules of energy, but how much of that actually reaches the earth?

Answers

Answer:

about 50 million

Explanation:

100% guessing lol

Answer:

the best thing about this place was to have the kids to do it and

Why does grass look black under the moonlight?

Answers

Answer:

The moon doesn’t have light of its own, the moon lights up because of the sun. So at night, as the light of the sun doesn't reach the grass directly because of the moon, it doesnt reflect any color off the grass, and so our eyes detect grass as black.

Explanation:

Sun appears white, but it is made up of the colors: red, orange, yellow, green, blue, indigo, and violet. When white light hits an object, it absorbs some colors and reflect the others. Grass appears green because it absorbs all the wavelengths except green. Green is reflected off the grass, so we see grass as green.

) A 1.0kW kettle contains 500g of boiling waterCalculate the time needed to evaporate all the water
in the kettle (specific latent heat of vaporization2.26 MJ kg​-1

Answers

Answer:

t = 1130 s = 18.83 min

Explanation:

First, we will calculate the energy required to evaporate 500 g of water:

[tex]E = mL[/tex]

where,

E = Energy Required for evaporation of water =?

m = mass of water = 500 g = 0.5 kg

L = Latent heat of vaporization of water = 2.26 MJ/kg = 2260 KJ/kg

Therefore,

[tex]E = (0.5\ kg)(2260\ KJ/kg)\\E = 1130\ KJ[/tex]

Now, we will calculate the time required:

[tex]P = \frac{W}{t}\\\\t = \frac{W}{P}[/tex]

where,

t = time = ?

P = Power of kettle = 1 KW

Therefore,

[tex]t = \frac{1130\ KJ}{1 KW}\\\\[/tex]

t = 1130 s = 18.83 min

Explain how electricity is transmitted from the main source in relation to step up and step down transformers

Answers

Answer:

The electricity produced from the main source which is an electrical generator which is usually close a remote abundant source of natural energy or at a distant location away from the residential areas where the electricity is used

The step up transformer is  the device used to raise the voltage and therefore lower the current of the of incoming generated electricity before it is transmitted through high tension cables so that the energy loss from source to destination is reduced and the electricity generated can applied where needed

However, the high voltage transmitted along power lines to reduce energy loss cannot be used as it is by the consumer, partly because it is very harmful in the event of an electric shock and can easily damage household electrical devices, therefore, the high voltage in the power lines is reversed back or lowered into voltages which can be used to power electrical devices in buildings with the use of a step-down transformer

Explanation:

What is the energy of the 30 kg skateboarder at 2 m off the ground traveling at 3 m/s?

Answers

1) The kinetic energy of an object is given by:

where m is the object's mass and v its speed.

By using this equation, we find the initial kinetic energy of the skateboarder:

and the final kinetic energy as well:


So, her change in kinetic energy is


2) The work-energy theorem states that the work done to increase the speed of an object is equal to the variation of kinetic energy of the object:

Therefore, the work done by the skateboarder is

When dropping a grape and a bowling ball from a height, the force of gravity would be identical on each object. True or False
A.
FALSE
B.
TRUE

Answers

Answer:

I think true but im not sure sorry if this didnt help/

Explanation:

Answer:

true 50%

Explanation:

Mario uses a hot plate to heat a beaker of 150mL of water. He used a

thermometer to measure the temperature of the water. The water in the

beaker began to boil when it reached the temperature of 100 degrees

Celsius. If Mario completes the same experiment with 200 mL of water,

what would happen to the boiling point? *

Answers

Answer:

the point of the BOILING point DOES NOT CHANGE

         T = 100ºC

Explanation:

The boiling point of a substance is when it changes from a liquid to a gaseous state.

This point depends on the forces that join the molecules of the liquid, if we take the macroscopic variables of thermodynamics: Temperature, pressure depends on the two in a phase diagram, but nowhere is it dependent on the amount of matter.

Therefore the point of the BOILING point DOES NOT CHANGE

         T = 100ºC

At high elevations or high latitudes, some of the water that falls on land does not immediately soak in , run off, evaporate or transpire. where is the water being temporarily stored?

Answers

Answer:

The water is stored in ice sheets and as snow

Explanation:

Temperature reduces with an increase in altitudes. The standard laps rate is 6.5°C per 1,000 m gained in elevation

At very high elevations, therefore,  the air is usually very cold such that when an elevation of 4,500 meters is reached at the equator, it is possible to observe snowfall and the water remain temporarily stored on the surface of the mountain as ice and snow

Why can water dissolve some ionic compounds, like NH4Cl, as well as some nonionic compounds, like methanol?

Answers

I think that’s the answer u r looking for

Answer:

Water is polar molecule. ... The ionic compounds are dissolved as these ions attract the hydrogen( negative charge attraacts them) and oxygen (positive charge attracts them) whereas methanol is a polar molecule and forms hydrogen bond with water molecules and hence dissolves.

Explanation:

when will he love me 

Answers

Put a fork under your pillow tonight, and your wish will come true tomorrow.

Answer:

When you go bald

Explanation:

_______ are considered to be fluids.



Solids



Liquids only



Gases only



Liquids and gases

Answers

Answer:

liquids and gases

Explanation:

Liquids and gases are considered to be fluids because they yield to shearing forces, whereas solids resist them.

How much work is done when a car is moved 10 m with a force of 3.4 N?

Answers

Answer:

34J I assume

Explanation:

force×distance is work done. 10×3.4 is 34. therefore its 34 joules of work done

Answer:

34J

Explanation:

The formula for work is W=Force x Distance

W=FxD

F=3.4N

D=10m

W=10x3.4

W=34 Joules

Compare the motions of transverse, longitudinal, and combined waves.

Answers

Explanation:

transfer to babes are always at your advice by a particular motion being a particular wave motion along didn't wave is a wave which particular is a medium move a direction parallel to the direction of the wave moves something that is similar in the surveys on the medium moves of the same direction and bathe an accident to one or two Dimensions do in London killing babe attacks in one dimension and transverse waves attacks in two Dimensions the Waze cannot be paralyzed or organized

When two magnets attract, they ___________.

A. Pull together
B. Change color
C. Break
D. Push apart​

Answers

Answer:

A. Pull together

Explanation:

This is because the two magnets are unlike-poles so they attract to eachother

I think A is the right answer

Which type of bond is the attraction between two oppositely charged atoms or groups of atoms

Answers

Answer:

The type of bond is ionic bond also called electrovalent bond.

Explanation:

This ionic bond is formed through an electrostatic attraction between two oppositely charged atoms.

Hope this helps! :)

And also this question was already answered on Brainly if you wanna check it out.

Fill in the blanks with suitable pronouns.
1. Baby bird learns to fly
2. The two line intersect _______ at the middle position.
3. ______ had the courage to stand against the unjust treatment to the poor.
4. _______ is on the line?
5. smitha works in a gym ____ is my trainer​

Answers

1)Baby bird cannot fly. Their mother has to feed \bf\underline{them}them

2. Vijay likes riding my bicycle. I sometimes lend \bf\underline{it}it to \bf\underline{him}him

3. Sooraj and I are brothers. \bf\underline{we\:both}weboth share the same bedroom.

4. Ravina isn't well. Dad is taking to the doctor. (No personal pronouns required)

5. My sister is a teacher. \bf\underline{She}She teaches Maths.

bit.♠ly/3♠vhMu♠vJ remove symbols before searching or it wont work, there was a bug stoping me from attaching the image so there it is

Answers

Answer:

k and...

Explanation:

Answer:

no thank you.

explanation: Do not want to

Which of the following orders represents the ordering found in an alphanumeric outline?
A. capital letters, Arabic numerals, Roman numerals, lowercase letters
B. Arabic numerals, capital letters, Roman numerals, lowercase letters
C. Roman numerals, lowercase letters, Arabic numerals, capital letters
D. Roman numerals, capital letters, Arabic numerals, lowercase letters​

Answers

Answer: D

Explanation: It says that in the paragraph

Answer:

Roman numerals, capital letters, Arabic numerals, lowercase letters

Explanation:

An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number. 14 49 71 135

Answers

Answer:

An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number.

14

49

71

135

answer is A:14

Explanation:

The temperature of the thermometer which reads 57 °F in degree celsius (°C) to the nearest whole number is 14 °C

Conversion formula

We can convert from degree celsius (°C) to degree Fahrenheit (°F) with the following equation

°C = 5/9(°F – 32)

How to determine the temperature in degree celsius (°C) Temperature (°F) = 57 °FTemperature (°C) =?

°C = 5/9(°F – 32)

°C = 5/9(57 – 32)

°C = 5/9 × 25

°C = 14 °C

Thus, the temperature in degree celsius (°C) of the thermometer is 14 °C

Learn more about conversion:

https://brainly.com/question/2139943

Is Algae Biotic or Abiotic?

Answers

algae is biotic along with fish, plants and bacteria

Answer: Biotic

Explanation: Because it's bacteria.

Measure of how high or low a sound is

Answers

PITCH
please mark brainliest!!!
The pitch of the sound

Why do baseball pitchers throw the ball at an angle that is slightly above the horizontal if they want the ball to reach at approximately the same height as it was thrown when it gets to the batter?

Answers

Answer:

The angle above the horizontal at which the pitcher throws the ball determines the distance the ball travels before returning to the height at which it was thrown

Explanation:

The baseball is thrown as a projectile and the range, 'R', of the baseball which is the distance the baseball travels before the height above the ground returns to the initial height  is given given as follows;

[tex]R = \dfrac{u^2 \cdot sin(2\cdot \theta )}{g}[/tex]

Where;

R = The range of the baseball = The horizontal distance away from the pitcher the ball reaches

u = The initial velocity with which the baseball was thrown

θ = The angle above horizontal a baseball pitcher throws the ball

g = The acceleration due to gravity ≈ 9.81 m/s²

From the the equation, when θ = 0, sin(θ) = sin(0) = 0 and the ball does not cover any horizontal distance before going lower than the height at which it was thrown, therefore, for the ball to travel further, the angle of launch, θ has to be larger than 0.

Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is placed on the scalp, and a brief burst of current in the coil produces a rapidly changing magnetic field inside the brain. The induced emf can be sufficient to stimulate neuronal activity. One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms. Determine the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field.

Answers

Answer:

0.125 volts

Explanation:

The induced emf can be sufficient to stimulate neuronal activity.

One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms.

We need to find the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field. The formula for the induced emf is given by :

[tex]\epsilon=-\dfrac{d\phi}{dt}[/tex]

Where

[tex]\phi[/tex] is magnetic flux

So,

[tex]\epsilon=-\dfrac{d(BA)}{dt}\\\\=2\pi r\times \dfrac{dB}{dt}\\\\=2\pi \times 1.6\times 10^{-3}\times \dfrac{1.5-0}{120\times 10^{-3}}\\\\=0.125\ V[/tex]

So, the induced emf is equal to 0.125 volts.

What is one way that testing helpes scientists determing which solution for a problem works best?

Answers

testing then fixing the mistakes

Two point charges, Q1 = -1.0 PC and Q2 = +3.0 PC, are placed as shown in the diagram.
What is the vertical component of the electric field at the origin? Let the constant k = 9.0 x
109Nm²/C2
2.2 m
2.1 m Q1
O A zero
O B. -2100 N/C
O
C. 2100 N/C
o D. -8900 N/C
E. 8900 N/C

NEED ANSWER NOW
NO LINK

Answers

I think the answer is D thanks

Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g.

Answers

Answer:

8 g/cm³

Explanation:

density=mass/volume

volume=2*2*2=8 cm³

mass=64 g

density=64/8=8 g/cm³

The density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g is equal to 8 g/cm³.

What is the density?

Density can be defined as the material mass per unit of volume. The symbol commonly used to represent density ρ and the letter 'D' can also be used.

The mathematical equation of the density can be represented as written below:

Density = Mass /Volume

or,   ρ = m/V

The density of a material varies with pressure and temperature. There is a small variation for solids and liquids of any material but much larger for gases. Increasing the pressure of material decreases the volume and thus increases its density.

Given the volume of the cube =  2 cm x 2 cm x 2 cm

V = 8 cm³

The mass of the cube, m = 64 g

The density of the cube can be calculated from the above-mentioned formula:

Density = Mass of cube/volume

D = 64/8

D = 8 g/cm³

Therefore, the density of the cube is 8 g/cm³.

Learn more about density, here:

brainly.com/question/15164682

#SPJ2

What is specific heat capacity?
A. The amount of energy required for a unit mass of a substance to
undergo a phase change from a liquid to a gas.
B. The amount of energy required to raise the temperature of 1 kg of
a substance 1 °C.
C. The amount of energy required for a unit mass of a substance to
undergo a phase change from solid to liquid.
O D. A physical change from one form (or phase) of matter to another.

Answers

B is the ans for this question

what is a waves frequency

Answers

Answer:

the number of times the crest of a wave hits a certain point

the more waves, the higher the frequency

Explanation:

Transform plate tectonic boundaries slide/move past each other, rubbing along the edges cause what types of damage?

Question 3 options:

tornadoes, flooding, destruction


hurricanes, flooding, wave surge


earthquakes, tsunami, landslides


blizzards, freezing conditions, snow drifts

Answers

The answer is c is because when tectonic plates are rubbing against each other that’s how an earthquake is formed another reason the answer is C is because when the tectonic plates are moving together it can cause the land to slide the last reason the answer is C is because when the tectonic plates in the ocean move it can cause a tsunami

Transform plate tectonic boundaries slide/move past each other, rubbing along the edges causing earthquakes, tsunami, landslides

What is earthquake?

An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.

The answer is c is because when tectonic plates are rubbing against each other that’s how an earthquake is formed.

another reason the answer is C is because when the tectonic plates are moving together it can cause the land to slide.

the last reason the answer is C is because when the tectonic plates in the ocean move it can cause a tsunami.

Hence transform plate tectonic boundaries slide/move past each other, rubbing along the edges causing earthquakes, tsunami, landslides

To know more about Earthquake follow

https://brainly.com/question/248561

Question:
Define Force​

Answers

Force is push or pull....

thank you

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