A mirror works on the principle of
and a lens works on the principle of​

Answer:

3,955.2

Explanation:

I think using order of operations PEMDAS this is right

The charge applies only to the electric force.

Electrostatic force is directly related to the charge of each object. So if the charge of one object is doubled, then the force will become two times greater. Two times 0.080 N is 0.160 N.

Electric forces can only act between charged objects - either like-charged or oppositely-charged. Electric forces between two charged objects increase with increasing separation distance.

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Answer: New frequency = 103.3Hz

Explanation:

Given that the

Frequency F = 116.5 Hz

The tube is an opened tube.

The relationship between wavelength and the length of the tube is

λ = 2L/n

Where

λ = wavelength

L = length of the tube

n = number of harmonic

For 4th harmonic,

λ = 2L/4 = L/2

But wave speed V = F(λ)

Substitutes (λ) into the wave speed formula

V = FL/2

Let's assume that the V is the speed of sound = 330m/s

Substitutes the V and F into the formula above.

330 = 116.5L/2

Cross multiply

660 = 116.5L

L = 660/116.5

L = 5.67 m

Given that the first valve is pushed, it opens an extra bit of tubing 0.721m long.

New length = 5.67 + 0.721 = 6.39 m

New frequency will be

330 = 6.39F/2

Cross multiply

660 = 6.39F

F = 660/6.39

F = 103.3 Hz

Answer:

The outbreak of tornadoes that tore across the Gulf and the East Coast Tuesday and Wednesday was unusual for two reasons. For one thing, the severe weather encompassed a significant swath of the country. For another, winter is the least likely time for tornadic thunderstorms.

Explanation:

The outbreak of tornadoes that tore across the Gulf and the East Coast Tuesday and Wednesday was unusual for two reasons. For one thing, the severe weather encompassed a significant swath of the country. For another, winter is the least likely time for tornadic thunderstorms.

And yet tornadoes are an expected part of life in the United States—especially in the multi-state area known as Tornado Alley. (Florida, too, sees a disproportionately high number of tornadoes, because of its frequent thunderstorms.) The United States gets more tornadoes, by far, than any other place on the planet. It averages about 1,250 twisters a year. Canada, which sees about 100 tornadoes per year, is a “distant second,” according to the National Centers for Environmental Information.

Answer:

the first one

Explanation: the first one because they were all on two different continents so when they seperated half of the species went on one continent and the other half went onto another one

Answer:

Air currents. etc

Explanation:

I think air currents formed near the equator have something to do with this the ocean also effects the weather with it's moisture you will have to put this in your own words.

Answer:

Well, Your answer will be is 840.96 mi.

Good Luck!

[tex]^{Itsbrazts}[/tex]

Answer:

1.35 x 10^6

Explanation:

{(6.67 x 10^-11) x (2.14 x 10^22)} / (x)^2 = .779

I don't know how that works but I found it online and it was right for Acellus

Answer:

Fever or elevated body temperature might be caused by:

A virus.

A bacterial infection.

Heat exhaustion.

Certain inflammatory conditions such as rheumatoid arthritis — inflammation of the lining of your joints (synovium)

A malignant tumor.

Many illness-causing microbes do best at the body's normal temperature. A fever raises the temperature beyond which certain microbes need to reproduce. A fever also kicks your child's immune system into high gear, spurring the rapid production of bug-clobbering white blood cells.

Explanation:

google lol

Answer:

The flow speed , pressure and volume flow rate in the bathroom are 6 m/s , 3.3\times10^{5}\ Pa3.3×10

5

Pa and 0.47 L/s.

Explanation:

Given that,

Inside diameter = 2.0 cm

Pressure P= 4.0\times10^{5}\ paP=4.0×10

5

pa

Diameter of pipe = 1.0 cm

Speed at inlet = 1.5 m/s

Height = 5.0 m

(I). We need to calculate the flow speed

Using continuity equation

A_{1}v_{1}=A_{2}v_{2}A

1

v

1

=A

2

v

2

v_{2}=(\dfrac{D_{1}}{D_{2}})^2\times v_{1}v

2

=(

D

2

D

1

)

2

×v

1

Where, A₁ = area of inside

A₂ = area of

v₁ = speed at inlet

Put the value into the formula

v_{2}=(\dfrac{2.0\times10^{-2}}{1.0\times10^{-2}})^2\times1.5v

2

=(

1.0×10

−2

2.0×10

−2

)

2

×1.5

v_{2}=6 m/sv

2

=6m/s

(II). We need to calculate the pressure

Using Bernoulli equation

P_{2}+\dfrac{1}{2}\rho v_{2}^2+\rho g h_{2}=P_{1}+\dfrac{1}{2}\rho v_{1}^2+\rho g h_{1}P

2

+

2

1

ρv

2

2

+ρgh

2

=P

1

+

2

1

ρv

1

2

+ρgh

1

Put the value in the equation

P_{2}+\dfrac{1}{2}\times1000\times6^2+1000\times9.8\times5.0=4.0\times10^{5}+\dfrac{1}{2}\times1000\times(1.5)^2+1000\times9.8\times0P

2

+

2

1

×1000×6

2

+1000×9.8×5.0=4.0×10

5

+

2

1

×1000×(1.5)

2

+1000×9.8×0

P_{2}+18000+49000=4.0\times10^{5}+1125P

2

+18000+49000=4.0×10

5

+1125

P_{2}=4.0\times10^{5}+1125-67000P

2

=4.0×10

5

+1125−67000

P_{2}=3.3\times10^{5}\ PaP

2

=3.3×10

5

Pa

(III). We need to calculate the volume flow rate

Using formula of the volume flow rate

Q= vAQ=vA

Where, v = final velocity

A = area

Put the value into the formula

Q=6\times\pi\times(0.005)^2Q=6×π×(0.005)

2

Q=4.7\times10^{-4}\ m^3/sQ=4.7×10

−4

m

3

/s

Conversation:

Q=\dfrac{4.7\times10^{-4}\ m^3}{s}\times\dfrac{1000\ L}{1\ m^3}Q=

s

4.7×10

−4

m

3

×

1 m

3

1000 L

Q=0.47\ L/sQ=0.47 L/s

Hence, The flow speed , pressure and volume flow rate in the bathroom are 6 m/s , 3.3\times10^{5}\ Pa3.3×10

5

Pa and 0.47 L/s.yap

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Answer:

C. It remained at a constant speed

Answer:

5867.56 Newtons

Explanation:

KE = 0.5mv^2

KE = 0.5*0.02kg*766m/s = 5867.56N

Answer:

The initial velocity of the second stone is 34.3 m/s

Explanation:

The distance height covered by the second stone will be

75m - 15m = 60 m

Since the two stones hit the ground at the same time.

Using third equation of motion, which state that;

V^2 = U^2 - 2gH

Where

U = Initial velocity

V = final velocity

H = 60 m

g = 9.81 m/s^2

As the stone reaching the ground, that is, coming to rest, V = 0. Therefore,

Substitute all the parameters into the equation

0 = U^2 - 2 × 9.81 × 60

U^2 = 1177.2

U = 34.3 m/s

The initial velocity of the second stone is 34.3 m/s

Answer:

Explanation:

Electrons play a major role in all chemical bonds. There is one type of bonding called electrovalent bonding (ionic), where an electron from one atom is transferred to another atom. You wind up creating two ions as one atom loses an electron and one gains one.

Answer: set up a reminder so you won't forget also try clearing your schedule so you can have more time

Answer:

1.) Total distance = 70 m

2.) Total displacement = +30m

Explanation:

Distance is a scaler quantity. That is, we will be concerned about its magnitude only and not direction.

Total distance = 10 + 20 + 40 = 70 m

While displacement is a vector quantity. We will consider both the magnitude and its direction.

Forward direction will be positive while backward direction will be negative

Total displacement = +10 - 20 + 40

Total displacement = +30 m

Answer:

Force, F = 1 N

Explanation:

We have

Mass of a box is 1 kg

Acceleration with which it is pushed is 1 m/s²

It is required to find the force acting on the box.

Force, F = ma

[tex]F=1\ kg\times 1\ m/s^2\\\\F=1\ N[/tex]

So, the force of 1 N is acting on the box.

Answer:

400*25

W = 10000 J

Explanation:

I believe time is irrelevant in work although it is important in the formula for power.

Answer:

175

Explanation:

hope this helps :)

Answer:

175

Explanation:

Answer:

The carbon cycle plays a key role in regulating Earth's global temperature and climate by controlling the amount of carbon dioxide in the atmosphere. The greenhouse effect itself is a naturally occurring phenomenon that makes Earth warm enough for life to exist.

As the burning of fossil fuels and landscape alterations, such as deforestation and industrial agriculture, mobilize fossil carbon into the atmosphere, the earth's carbon cycle is pushed out of balance and climate changes. Human generated climate change is an enormous perturbation in the global carbon cycle.

Explanation:

Answer:

3.60 × [tex]10^{15}[/tex] Hz

Explanation:

[tex]\frac{2.39 * 10^{-18} J}{6.63 * 10^{-34} J.s}[/tex]

The frequency of UV light that has an energy of 2.39 × 10 -18 J is 3.60 ×  Hz.

The term frequency refers to the number of waves that pass a fixed point in unit time. It also describes the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

Moreover, frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency for clarity, and is distinct from angular frequency. Frequency is measured in hertz which is equal to one event per second.

Therefore, the number of vibrations that a sound wave is making is called its frequency ( f ). Frequency can also be defined as the number of waves passing a given point in one second. Frequency is measured in hertz (Hz).

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Answer:

The correct answer will be "2.97 × 10⁸ m/s".

Explanation:

The give values are:

Observed frequency,  [tex]F=4.26\times 10^{10} \ Hz[/tex]

Original frequency,  [tex]F_{0}=6.17\times 10^{14} \ Hz[/tex]

Let the velocity of Rigel be = V m/s

As we know,

⇒   [tex]F_{0}=F\sqrt{\frac{C+V}{C-V}}\\[/tex]

On putting the values, we get

⇒   [tex]\frac{6.17\times 10^{14} }{4.26\times 10^{10} } =\sqrt{\frac{C+V}{C-V} }[/tex]

⇒   [tex]\frac{C+V}{C-V}=(14483.56808)^2[/tex]

⇒   [tex]\frac{C+V}{C-V}=209773744.2[/tex]

⇒   [tex]C+V=209773744.2 \ C-209773744.2 \ V[/tex]

⇒   [tex]C-209773744.2 \ C=209773744.2 \ V-V[/tex]

⇒   [tex]V=\frac{209773743.2}{209773745.2} \ C[/tex]

⇒   [tex]V=0.99 \ C[/tex]

So that the Rigel's velocity will be "0.99 C".

Now,

⇒  [tex]V=0.99\times 3\times 10^8[/tex]

⇒      [tex]=2.97\times 10^8 \ m/s[/tex]

Answer:

Collector current is controlled by the Base current.

In a transistor collector current is controlled by:  Base current ( A )

A transistor is an electrical device ( semi conductor ) which is used to switch off or on electrical signals and power. It can also amplify electrical signals and power. The collector current in a transistor is called by the base current when the transistor is in its active region.

Hence we can conclude that In a transistor collector current is controlled by:  Base current ( A ) .

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Answer: Heat Cramps

Explanation:

Sunburn isn't caused by sweating. When one has heat stroke, they do not sweat. Heat cramps are a SYMPTOM of heat cramps, but heat exhaustion includes much more than just heat cramps.

Answer:

hope this helps you

..........

Answer:

The two neighboring planets with the greatest distance between them is Neptune and Uranus. This happens when they are at the opposite sides of the Sun at approximately. They are 4500 million miles away from each other.

If by adjacent you mean next to each other, in terms of the order of planets in our Solar System, then the closest would be Earth and Venus; which are separated by about 38,000,000 kilometres when in opposition.

I am not sure about the general patterns..

Venus has the longest day of any planet in our solar system. It completes one rotation every 243 Earth days.

A year on Neptune is the longest of any planet, lasting the equivalent of 164.8 years (or 60,182 Earth days). It is obvious because it is also the farthest with the longest orbit.

Outer planets are less dense than the inner planets because they posses a big volume but contains not much mass. Try to imagine 2 rocks, one is big, but is hollow or have a lot of holes; and the other is small, but solid with no holes.

Happy learning!!

The two neighboring planets with the greatest distance between them is Neptune and Uranus. This happens when they are at the opposite sides of the Sun at approximately. They are 4500 million miles away from each other.

A planet is a large, rounded astronomical body that is neither a star nor its remnant.

If by adjacent you mean next to each other, in terms of the order of planets in our Solar System, then the closest would be Earth and Venus; which are separated by about 38,000,000 kilometres when in opposition.

Venus has the longest day of any planet in our solar system. It completes one rotation every 243 Earth days.

A year on Neptune is the longest of any planet, lasting the equivalent of 164.8 years (or 60,182 Earth days). It is obvious because it is also the farthest with the longest orbit.

Outer planets are less dense than the inner planets because they posses a big volume but contains not much mass. Try to imagine 2 rocks, one is big, but is hollow or have a lot of holes; and the other is small, but solid with no holes.

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Answer:

Coordination is the ability to use the senses together with body parts during movement.

This statement is true.

For example, dribbling/juggling a soccer ball. Using feet and eyes together is called feet-eye coordination.

Hope this helps!

:)

Answer:

(10°C × 9/5) + 32 = 50°F

10°C + 273.15 = 283.15K

Explanation:

Answer:

A fluids is any substance that flows. Air is made of stuff, air particles, that are loosely held together in a gas form. Although liquids are the most commonly recognized fluids, gasses are also fluids. Since air is a gas, it flows and takes the form of its container.

Explanation:

Because it possesses the essential characteristics of fluids, air is regarded as a fluid.

A substance that may flow and take on the shape of its container is called a fluid. Here are several explanations for why air is seen as a liquid:

Thus given these qualities, air satisfies the requirements for fluidity and is frequently categorised as such in the study of fluid mechanics.

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Answer:

12.5 meters

Explanation: