What is shown in the diagram?


an electromagnet


a turbine


a motor


a generator

Answer:

b

Explanation:

did the quiz

Answer:

(B) The field lines go out of Earth near the South Pole, enter Earth in the North Pole, and are not aligned with the geographic poles.

Explanation:

Answer:A universe expansion

Explanation:

The earliest and most direct observational evidence of the validity of the theory are the expansion of the universe according to Hubble's law (as indicated by the redshifts of galaxies), discovery and measurement of the cosmic microwave background and the relative abundances of light elements produced by BBN.

Answer:

Ingrid is correct. The clay appears red because it is a type of matter.

Explanation:

Explanation: It is A because it only shows red because it only reflects red. If it let any other color pass through it then it could reflect any color.

Answer:

7 m^2

Explanation:

P=F/A

1=7/A

1A=7

A=7

Area is 7 meters squared

Answer:

B

Explanation:

Through air

Answer:

thermal conduction I assume

Explanation:

why because the thermal Insulator: a material that conducts thermal energy poorly. Gives off heat

Answer:

Our ears perceive then sound then it is transmitted to our brain where it is processed into something we can respond to. This all happens in less than a second and we are unaware that we are doing it.  

Explanation:

The sound wave bounces off of the ear drum into the inner ear.

Answer:

Sound waves travel from the outer ear and in through the auditory canal, causing the eardrum to vibrate. This in turn causes three small bones in the middle ear to move. The vibrations move through the fluid in the cochlea in the inner ear, stimulating thousands of tiny hair cells.

Answer:

Metric Math Mistake Muffed Mars Meteorology Mission. 1999: A disaster investigation board reports that NASA's Mars Climate Orbiter burned up in the Martian atmosphere because engineers failed to convert units from English to metric

Explanation:

hope this helps =)

Answer:

When the electric force between two charged objects change, the distance between the objects increases in Iicreasing the separation distance between objects and decreases the force of attraction or repulsion between objects.

Hope it helps.

Answer: I think 1 is 300 metres per second.

Explanation: wave speed= wave length x wave frequency

wave speed = 3 x 100

wave speed is 300 m/s

Effective resistance = 2+1.5 = 3.5 ohms

Current in the circuit = 1.2 A

Lost volts in the battery = 1.8V

Current in one of the 3 ohms resistors = 0.6 A

I hope it helps

Answer:

1. There would be two different tables, one arranged by mass and the second arranged by the chemical reactions the elements are known for

2. a. The difference is that the atomic mass is fixed and is 2 or more times the atomic number which is variable

b. The atomic number is the bases of the periodic table because it reflects the unique identity as well as the chemical and physical properties of the atoms more than the atomic number

3. The table formed by the atomic mass is not representative of the chemical properties of the elements

Explanation:

1. The elements would have been arranged by mass and by order of reaction such that there would be two tables where the first table will list all the known elements arranged by mass and the second table will group the elements in the order in which they can react or the kinds of compounds they can form such as oxides, nitrides etc

2. a. The atomic number, Z,  is determined by the definitive number of protons contained in the nucleus of an atom and it is used for the classification of an atom as a particular element based on the its equivalent atomic number

The atomic number defines the chemical behavior of an an element because it is equal to the number of electrons present in a neutral atom

The atomic mass or mass number, A, is the total of the mass of the protons and the neutrons present in an atom

The neutron is electrically neutral, allowing its quantity to vary without significantly impacting on the chemical behavior of the atom, hence two different elements can have the same number of neutrons

Therefore, the difference is that the atomic mass is fixed and is 2 or more times the atomic number which is variable

b. The atomic number is the bases of the periodic table because it reflects the unique identity as well as the chemical and physical properties of the atoms more than the atomic number

3. If the periodic table was arranged according to the atomic mass, we would have;

Groups

H

He      Li        B         C         O       F        Na      

Be      N       Ne        Mg      S        Ar      Sc

O        Si      Ca         Ti        Zn     Se      

It is seen that the above table is not representative of the chemical properties of the elements.

Answer:

B.  85  V

Explanation:

E(rms) = E(peak-to-peak) / squareroot(2)

E(rms) = 120V / 1.414 = 84.9 V

(When  rounded)  =  85  V

The correct option about peak value and effective value of AC sine wave is, “85 V”.

Peak value = 120 V (Given)

Effective value = Peak value ÷ √2

Effective value = 120 ÷ √2

Effective value = 85 V (approximately)

Thus, we can conclude that by dividing the peak value by √2, we will get effective value and multiplying the effective value with √2 will give peak value as result.

Learn more about peak value and effective value here:

https://brainly.com/question/15109247

#SPJ2

Answer:

decrease their prices

Explanation:

If we see demand curve then we can observe that demand for good decreases when price increases and demand for good increases when price decreases.

We also know intuitively that customer are price sensitive. That is their buying behavior changes with price of goods, Consumers prefer lower priced good.

So, if business owners want to increase demand for their goods and services

they should decrease their prices.

Answer:

8.2 cm

Explanation:

1/f = 1/so + 1/si

1/10 = 1/45 + 1/si

1/si = 1/10 - 1/45

1/si = 9/90 - 2/90

1/si = 7/90

si = 90/7 = 12.86 cm.

since you said that the answer was not 12 them the lens must be concave with negative (minus) focal length

1/f = 1/so + 1/si

- 1/10 = 1/45 + 1/si

1/si = - 1/10 - 1/45

1/si = -9/90 - 2/90

1/si = -11/90

si = -90/11 = - 8.2 cm

- (read: minus or negative sign) indicates the image is in the same side of the object

hope its true and can help you

Answer:

1/f = 1/u + 1/v

f=10cm

u=45cm

v=? (Image distance)

1/v = 1/f - 1/u

1/v = 1/10 - 1/45

1/v = (9-2)÷ 90

1/v = 7/90

:. v = 90/7

v=12.86cm(image distance)

Answer: B

White paper reflects some of the incoming waves,

while black absorbs all of the incoming waves.

Explanation:

Light is reflected off of white surfaces. Light is absorbed by opaque materials and transmitted through transparent objects. 

In the case of a white paper, a white paper can be considered as a translucent material in which some of the light incident on it bounces off while some pass through it. Therefore, we can conclude that White paper reflects some of the incoming waves,

while black absorbs all of the incoming waves.

Answer:

The acceleration is found as:

a = 1000 km/h²

Explanation:

Initial speed of the plane = 450 km/h

Final speed of the plane = 750 km/h

Time taken = 0.3 h

Acceleration can be defined as the change of speed of the object divided by the time taken to bring that change

Acceleration is given as:

[tex]a=\frac{v_f-v_i}{t}[/tex]

where v(f) = 750 km/h , v(i) = 450 km/h , t = 0.3 h

Substitute the values in the equation of acceleration

[tex]a= \frac{750-450}{0.3}\\a=\frac{300}{0.3}\\a=1000 km/h^2[/tex]

This is the found result

Answer: Liquefaction occurs when the structure of a loose, saturated sand breaks down due to some rapidly applied loading.

As the structure breaks down, the loosely-packed individual soil particles attempt to move into a denser configuration. Liquefaction most often occurs when three conditions are met:

loose, granular sediment or fill

saturation by groundwater

strong shaking

Answer:

heat is applied

Explanation:with metal and ice

Answer:

Explanation:

Speed is defined as the change in distance covered by a body with respect to time while velocity the change in displacement of a body with respect to time. Speed is a scalar quantity since it does not specifies direction while velocity is a vector quantity because it specifies both magnitude and direction.

Speed can only be equal to the velocity if it also specifies direction.

Based on the definition above, it can be concluded that speed is the change in distance over time and velocity is speed plus direction.

Answer:

Speed is the change in distance over time; velocity is speed plus direction.

Explanation:

I did it and got the test right

Answer:

Insulation protects you. Thats because the insulation will make a wall almost where the electrons cannot travel through. So when you touch the insulation on a live wire your SAFE. Insulations may include rubber, wood, and air.

Answer:

I'm pretty sure its insulation

Explanation:

Answer:

I didn't quite understand your question, but the moon jelly population will increase if there are either more zooplankton or less sea turtles.

More zooplankton means more food => higher population

Less sea turtles means that the moon jelly will be lest often consumed => higher population

Answer: Yes because the Orca will start to eat the moon jellies

Explanation: When the Sea Turtles start to get very low on population the Moon jellies are next in line also the sea turtles eat the moon jellies and since they eat the moon jellies the sea turtle has a bit of that taste in them so they will taste alike to the sea turtles.

Answer:

A. B

Explanation:

The image has been attached.

Reflected ray refers to the ray of light which is reflected back after striking a surface that is non-permeable.

The ray of light which is reflected before the ray touches the surface is said to the incident ray.

According to the given image, ray B is the reflected ray. Ray B is reflected in the air after the ray A strikes at the surface of the water.

B

Explanation:

Since mirrors reflect things, when you shine light at a mirror, it will bounce off of the mirror, or reflect, and shine the opposite direction of where the original light is pointed. The answer would be B because light doesn't go through the mirror, or run along it.

Think of when you through a basketball on the ground. If you bounce it at an angle, it won't just come back to you in the same angle. It will keep bouncing at the same angle you through it. This is pretty much what describes the relationship between ray A and ray B.

HOPE THIS HELPS!!!!!

Explanation:

when we use our circular coil, the magnetic field will always be perpendicular to the area vector.thus, due to this, sin wt gives sin 90 degree and that gives 1, giving maximum linking of flux associated with the coil at any position .

Answer:

When we use a circular coil, the magnetic field will always be perpendicular to the area vector. Thus, due to this, sinωt ⁡ gives sin90∘ ⁡ and that gives 1 , giving maximum linking of flux associated with the coil at any position.

Explanation:

Answer:

0.46 g/mL

Explanation:

Density can be found using the following formula.

[tex]d=\frac{m}{v}[/tex]

where d is density, m is mass, and v is volume.

We know that the object has a mass of 5.52 grams and a volume of 12 milliliters.

m=5.52 g

v=12 mL

Substitute these values into the formula.

[tex]d=\frac{5.52 g}{12 mL}[/tex]

Divide 5.52 by 12

5.52/12=0.46

d=0.46 g/mL

The density of the object is 0.46 g/mL, and option C is correct.