Match the units in the right hand column with the terms in the right hand column​

Answer:

400*25

W = 10000 J

Explanation:

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

Answer: A

Elements on the bottom left

Explanation:

Electronegativity of an element increases across the group in a periodic table. And decreases across the period in a periodic table. That is

Group 7, the halogen family has the highest Electronegativity and period one in that group has the highest.

Answer:

(10°C × 9/5) + 32 = 50°F

10°C + 273.15 = 283.15K

Explanation:

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:

C. It remained at a constant speed

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:

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:

a. 75 joules

b. 37.5 joules

c. 0 joules

Explanation:

work is defined as the product of force times the distance moved in the direction of the force

Given data

force F= 15N

distance S= 5m

[tex]force= 15*5\\force= 75 joules[/tex]

     2. In the direction at 60 degrees to the direction of the force

[tex]force= 15cos 60* 5\\force= 15*0.5*5\\force= 37.5 joules[/tex]

      3.  At right angles to the force

[tex]force= 15cos 90* 5\\force= 15*0*5\\force= 0 joules[/tex]

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: 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: 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:

12.5 meters

Explanation:

Answer:

D - More than 50

Explanation:

Since the middle of the last century, the beetle has developed resistance to 52 different compounds belonging to all major insecticide classes.

Answer: the wavelenght is 9.8 meters

Explanation:

We can use the relationship:

Velocity = wavelenght*frequency.

Initially we have:

wavelenght = 4.9m

velocity = 9.8m/s

then:

9.8m/s =  4.9m*f

f = 9.8m/s/4.9m =  2*1/s

now, if the velocity is doubled and the frequency remains the same, we have:

2*9.8m/s = wavelenght*2*1/s

wavelenght = (2*9.8m/s)*(1/2)s = 9.8 m

Answer:

B on Edge

Explanation:

Took the test

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:upper right hand side i think

Explanation:

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: A force

Explanation:

Answer:

it's a force because magnetics can act on a object from a distance because of gravitational force

Explanation:

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:

When a dying star has a mass which is 1.4 to 3 times that of the sun, it will form a neutron star. Stars with a mass greater than thrice the sun's mass, black hole is formed.

Explanation:

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

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:

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:

it has the highest potential energy when it is at the peak of it's height. why? cause PE = mgh where 'h' is the height. so PE will be maximum at max height!!

Answer:

It is when it is falling down it has its greatest amount of gravitational potential energy

Explanation:

This is because the gravitation of the earth pulls things closer to the earth

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:

A

Explanation:

A because its in large areas and there all spread apart more and there all going up and down.

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 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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