1. What kind of wave is in the picture above?
2. Label the following parts of waves above:
Rarefaction, compression, wavelength, direction of wave

Answer:

Kicking a ball involves you applying a force because you are pushing it with your foot and that makes it fly up. Once you shoot something into the air, the gravity force pulls it back down to the Earth, which is a different type of force.

Explanation:

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The sequence of energy conversions is; chemical energy ---> electrical energy ----> heat and light energy

According to thee first law of  thermodynamics, energy can neither be created nor destroyed but can be converted from one form to another. This is also called the principle of conservation of energy.

When the switch is turned on, chemical energy of the battery is converted to electrical energy is produced which is then converted to heat and light energy in the light bulb.'

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Answer: Thermal and Light

Explanation: When the switch is ON, the light bulb turns on, creating light. After a minute, the bulb will start to warm up, and so will the battery.

Answer:

a.) Total Momentum = 121 Kg•m/s

b.) Momentum of Azad = 94.5 Kg•m/s

c.) Momentum of Bike = 26.5 Kg•m/s

Explanation:

Now,

Mass of Azad = 21 Kg

Velocity = 4.5 m/s

P = 21 Kg × 4.5 m/s

P = 94.5 Kg•m/s

Mass of bike = 5.9 Kg

Velocity = 4.5 m/s

P = 5.9 Kg × 4.5 m/s

P = 26.5 Kg•m/s

Total Momentum = Momentum of Azad + Momentum of Bike

Total Momentum = 94.5 + 26.5 = 121 Kg•m/s

-TheUnknownScientist 72

The uses of fossil fuel causes:

Fossil fuels burn and increases in global temperature because it emits greenhouse gases. And the extreme climate change decreases biodiversity and last but not the least it increases pollution because burning of fuels emit gases like Carbon-dioxide etc...~

Answer:

All of the above

Explanation:

Fossil fuels burn causes combustion .

And we know combustion of hydrocarbons releases carbon dioxide .

The "cosmic tug-of-war" between NGC 2444 and NGC 2445 has result in the creation of new stars based on NASA's report.

A "cosmic tug-of-war" can be defined as a terminology that is used in astronomy to express the ratio of astronomical (planetary) and solar attractions on a natural satellite in space.

According to the National Aeronautics and Space Administration (NASA), NGC 2444 and NGC 2445 are both described as being engaged in a "cosmic tug-of-war" with NGC 2444 seemingly winning the battle..

In conclusion, NGC 2444 and NGC 2445 are both engaged in a "cosmic tug-of-war" because the immense gravity of NGC 2444 is pulling strands of gas from NGC 2445.

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•How does the dancing activity help you in improving fitness skills?

Answer:

•Health benefits of dancing

improved condition of your heart and lungs. increased muscular strength, endurance and motor fitness. increased aerobic fitness. improved muscle tone and strength.

Explanation:

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As resistance doesn't affect potential difference voltmeter reading remains 6V

#3

#a

So

Apply ohms law

[tex]\\ \rm\rightarrowtail I=\dfrac{V}{R}[/tex]

[tex]\\ \rm\rightarrowtail I=\dfrac{9}{3}=3A[/tex]

#b

Switch is off

Answer:

If the potential difference between the ends of the wire are the same then wire Y will experience a smaller drift speed. This is necessary to explain the difference in resistivity.

Answer: 0.99m left

Explanation:

The formula:

Distance / Time = Rate

Fill in the formula

Distance / 0.55s = 1.8 m/s

Multiply both sides by 0.55s

Distance = 0.99m

Displacement = 0.99m to the left.

Answer:

-0.99 (See attached)

Explanation:

(See attached)

Answer:

answer is 12 because 23-11=12

Explanation:

it is because the question want find one atom contains how many

Answer:

Explanation: Take the apparatus fill it with water which is enough to sink the rock, next write down the reading of the apparatus with only the water. next drop the rock in the water and write down the reading with the water and the rock. next calculate change in volume ( here volume is the reading in the apparatus). next find the weight of the rock.

Then put the values into this equation

Density = mass/volume

if you took all the units in  SI units then the unit of density is Kg/m^3

The density of a rock can be determined using normal laboratory apparatus through a method known as the "Archimedes' principle" or the "water displacement method".

Materials needed: 1. Electronic balance or scale 2. Graduated cylinder or beaker 3. Water

1. Weigh the rock: Use an electronic balance or scale to measure the mass (weight) of the rock. Record this value in grams (g).

2. Find the rock's volume:

  a. Fill the graduated cylinder or beaker with a known amount of water.

  b. Note the initial water level reading in milliliters (ml).

  c. Carefully lower the rock into the water, making sure not to splash or spill any water.

  d. Measure the new water level in the graduated cylinder or beaker after the rock is submerged. Record the final water level reading in milliliters (ml).

  e. The volume of the rock can be calculated by subtracting the initial water level from the final water level. This difference represents the volume of the rock displaced by water.

3. Calculate the density:

  The density (ρ) of the rock can be determined using the formula:

  ρ = Mass of the rock (in grams) / Volume of the rock (in milliliters)

4. Report the result:

  The density of the rock is typically expressed in grams per cubic centimeter (g/cm³) or grams per milliliter (g/ml).

This method can provide a reasonably accurate determination of the rock's density. However, keep in mind that the density may vary slightly depending on the specific rock composition and porosity. For precise measurements or for rocks with complex structures, more sophisticated laboratory techniques may be employed.

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Answer:

4.5 miles

Explanation:

20 minutes x 3 is 1 hour

1.5 x 3 is 4.5

Answer:

4.5 Miles

Explanation:

20 x 3 = 60

60 min = 1 hour

1.5 x 3 = 4.5

Answer:  it will take it about 2 1/2 minutes to reach Mercury. Not hours.

hope this helps!

The wavelength of a wave that has a frequency of 4.29 x 10^14 Hz is 6.9 × 10-⁵m.

The wavelength of a wave can be calculated using the following formula:

λ = v/f

Where;

λ = 3 × 10⁸ ÷ 4.29 × 10¹⁴

λ = 0.69 × 10-⁶

λ = 6.9 × 10-⁵m

Therefore, the wavelength of a wave that has a frequency of 4.29 x 10^14 Hz is 6.9 × 10-⁵m.

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Answer:

Currently, the magnetic south pole lies about ten degrees distant from the geographic north pole, and sits in the Arctic Ocean north of Alaska. The north end on a compass therefore currently points roughly towards Alaska and not exactly towards geographic north.

Explanation:

Answer:

12113.318mL

Explanation:

I hope this helps

Answer:

if it is totally frictionless you can only need to throw the hockey stick to one other side and wait for yourself to move slowly to the other side. this will happen by the law of conservation of momentum and Newton's First law (continues to move in the uniform velocity without external I. e. friction, Force).

Answer:

By seeing by how far away can it attract a paperclip.

Explanation:

Answer:

A rock is made from two or more minerals. A mineral might contain just one chemical element or more than one element. ...

The diamond is the Earth's hardest mineral. A diamond is so hard that it's possible to cut a diamond with another diamond

(a) The average number of charge carriers flowing past per second is 1.8 x 10⁻⁶ A

(b) The average current delivered in the given time is 2.56 x 10⁶ A.

(c) The time taken to deliver the charge is 32,166.7 s.

The average number of charge flowing per second is calculated as follows;

I = Q/t

I = (45 x 10⁻⁹) / (25 x 10⁻³)

I = 1.8 x 10⁻⁶ A = 1.8μ A

The average current is number of charge flowing in a second.

I = Q/t

Charge of one electron = 1.6 x 10⁻¹⁹ C

Charge of 56 x 10¹⁶ electrons = 56 x 10¹⁶ x 1.6 x 10⁻¹⁹ C = 0.0896 C

I = (0.0896) / (0.035 x 10⁻⁶)

I = 2.56 x 10⁶ A

Total charge in 2+ ions = 2F

1 Faraday = 96,500 C

2F = 2 x 96,500 C = 193,000 C

At the given amount of current, the time taken to deliver the charge is calculated as follows;

Q = It

t = Q/I

t = (193,000 )/6

t = 32,166.7 s = 8.9 hours

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Explanation:

F=ma=(100kg)(4m/s/s)=400N

N is Newton, the SI unit of force, which is a kg•m/s/s. F is net force and, of course, m is mass and a is acceleration.

The net force acting on a 100kg man standing in an elevator accelerating downward with a=9.8 m/s^2 is d. zero

What is force?

calculation force of a lift:-

 net force,

     Mg-F=Ma

      100*9.8-F=100*9.8

     F=100*9.8-100.9.8

        F= 0

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Answer:

240,000 J or 240 kJ

Explanation:

We can use the equation for kinetic energy:

KE = [tex]\frac{1}{2}mv^{2}[/tex]

where m = mass and v = velocity

Next, substitute the known values into the equation:

KE = 1/2 × 1200 × 20² = 240,000 J

Answer: 240,000 J or 240 kJ

Hope this helps!

Answer:

Gale force winds, lightning strikes, temperature extremes and a deluge of snow, hail or rain. These combined forces break up the rocks and erode the peaks into their stark, sculpted forms. Falling ice, rocks and gushing water wear away at the mountain slopes.

Explanation:

This is the correct answer...

I hope you understand...

The wavelength of the water wave is 15 m.

Wavelength is the distance of a complete cycle traveled by a wave.

To calculate the wavelength of the wave, we use the formula below.

Formula:

Where:

make λ the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The wavelength of the water wave is 15 m.
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vf²=vi²+2ad

12²=0+2.a.10

a = 7.2 m/s²

W = m.g

m = W/g = 98/9.8 = 10 kg

∑F=m.a

W-fr=m.a

fr(air friction)=W - m.a

fr = 98 - 10 x 7.2

fr = 98 - 72

fr = 26 N

Answer:

a wave with a time period of 2 seconds has a frequency of 1 ÷ 2 = 0.5 Hz. A sound wave has a time period of 0.0001 seconds.

This question involves the concepts of average speed, distance, and time.

The average speed of the family is "2.5 mi/hr".

The average speed is defined as the ratio of the total distance covered with the total time taken to cover it.

[tex]v=\frac{s}{t}[/tex]

where,

Therefore,

[tex]v=\frac{2.5\ mi}{1\ hr}[/tex]

v = 2.5 mi/hr

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Answer:

More energy

Explanation:

Steam is hotter than boiling water because it contains more energy