which form of the energy is used to generate electrical energy in a tidal power station

Answer:

speed /wavelength = frequency

f = 3×10*8 /6.5×10*7

f = 4.62

Answer:

9 times more kinetic energy

Explanation:

KE₀ = ½mv²

KE₁ = ½m(3v)² = 9(½mv²) = 9KE₀

Answer:me

Explanation:I do

George Washington was an American political leader, military general, statesman and Founding Father of the United States, who serves as the first president of the United States from 1789 to 1797.

During the American Revolution, the led the colonial forces to victory over the British and became a national hero. In 1787, he was elected president of the convention that wrote the U.D. constitution. Two years later, Washington became the America's first president.

Explanation:

You have already determined the components of the known forces so I won't repeat your work here. Since the resultant force [tex]\vec{\textbf{R}}[/tex] and F1 are completely along the x-axis, we can conclude that

[tex]F_{2y} = F_{3y} \Rightarrow F_{3y} = F_3\cos{\theta} = 250\:\text{lb}[/tex]

We can now solve for the magnitude of [tex]F_3:[/tex]

[tex]F_3 = \sqrt{F_{3x}^2 + F_{3y}^2} = \sqrt{(467)^2 + (250)^2}[/tex]

[tex]\:\:\:\:=529.7\:\text{lb}[/tex]

The angle [tex]\theta[/tex] is then

[tex]\tan{\theta} = \dfrac{F_{3y}}{F_{3x}} = \dfrac{250}{467}[/tex]

or

[tex]\theta = 49.2°[/tex]

Answer:

The limitations of the experiment are those characteristics of design or methodology that impacted or influenced the application or interpretation of the results of your study.

Answer:

Explanation:

Evolution is both a fact and a theory. Evolution is widely observable in laboratory and natural populations as they change over time. The fact that we need annual flu vaccines is one example of observable evolution. At the same time, evolutionary theory explains more than observations, as the succession on the fossil record. Hence, evolution is also the scientific theory that embodies biology, including all organisms and their characteristics. In this paper, we emphasize why evolution is the most important theory in biology. Evolution explains every biological detail, similar to how history explains many aspects of a current political situation. Only evolution explains the patterns observed in the fossil record. Examples include the succession in the fossil record; we cannot find the easily fossilized mammals before 300 million years ago; after the extinction of the dinosaurs, the fossil record indicates that mammals and birds radiated throughout the planet. Additionally, the fact that we are able to construct fairly consistent phylogenetic trees using distinct genetic markers in the genome is only explained by evolutionary theory. Finally, we show that the processes that drive evolution, both on short and long time scales, are observable facts.

The evolutionary theory is a scientific theory because its assumptions are well sustained by scientific data.

In conclusion, the evolutionary theory is a scientific theory because its assumptions are well sustained by scientific data.

Learn more in:

https://brainly.com/question/11555274

Answer:

downwards bro now dodododododdodo

Answer:

[tex]vertically \: downward \\ to \: the \: cenre \: of \: earth \\ thank \: you[/tex]

Answer:

50µs

Explanation:

The conversion is that 1 second equals 1,000,000 micro seconds. Since we have 0.00005 seconds, we will multiply that to a million.

0.00005 * 1,000,000 = 50µs

Keep in mind that 50 only has 1 significant figure because any trailing zeroes before the decimal point do NOT count.

Best of Luck!

0.00005 seconds = 50 μs

Thank you

hey there! the correct answer would be ozone! hope this helps!!

Answer:

» An electron is lighter than a proton.

explanation:

[tex]{ = \: \sf{an \: electron \: has \: formula \: \: }}{ \bf{ {}^{0}_{ - 1}e }}[/tex]

hence it's mass number is zero

[tex]{ = \: \sf{an \: electron \: is \: helium \: particle \: \: }}{ \bf{ {}^{4} _{2}He }}[/tex]

hence it's mass number is 4

Therefore, proton is heavier than electron

» An electron has a small charge magnitude than a proton.

Explanation:

An electron has charge of -1 while proton has charge of +2, therefore electron is less deflected by any energetic fields than a proton

If the bulb's resistance doesn't change, the power it uses is proportional to the square of the voltage. So doubling the voltage quadruples the power.

On 220 V, the bulb uses (4 • 40w)= 160 W.

It glows very brightly.

For a very short time.

Because it also gets very hot, and burns out.

After a few seconds, it uses zero watts.

Answer:

160

Explanation:

Acellus

Explanation:

[tex]\lambda = \dfrac{c}{\nu} = \dfrac{3×10^8\:\text{m/s}}{4.4×10^9\:\text{Hz}} = 0.068\:\text{m}[/tex]

Explanation:

[tex]R = \dfrac{v_0^2}{g}\sin{2\theta} = \dfrac{(25\:\text{m/s})^2}{9.8\:\text{m/s}^2}\sin{60°}[/tex]

[tex]\:\:\:\:=55.2\:\text{m}[/tex]

Answer:

-14.8 m/s

Explanation:

Unless this is a trick question the initial velocity is 14.8 m/s.  Velocity is a vector quantity, i.e. it has a magnitude AND direction.  Speed which is a scalar is certainly 14.8 m/s.  The direction of the vector depends on the axis of co-ordinates chosen; consequently velocity might be said to be - 14.8 m/s

Answer:

3 micro coulombs = 3 * 10E-6 coulombs     charge of aluminum

13 * 10E15 * 1.6 * 10E-19 = 2.08 E-3 Coulombs - charge of atoms in Al

3 * 10E-6 / 2.08 * E-3 = 1.44 * E-3 = .00144 = .144 %

.00144 of the original electrons would have to be lost

Answer:

It has 3 electrons

Explanation:

Neutral atom has an overall charge of zero.

Since atomic number is 3, it has 3 protons [ positive charges ]. So, to be neutral, the atom must have 3 electrons [ negative charges ] to cancel out the positive charge.

Answer:

7.5 miles

Explanation:

0.25 hours=15minutes.

So you do

30 miles=60minutes

x =15minutes

cross multiply

Ans-7.5

How do we find the Average Speed ?

The Average Speed is the distance traveled for the object, divided by the elapsed time taken to travel that distance, so the formula is :

S = D / T

where S = Average Speed, D = Distance, and T =  Times

Here the object is the ball, the distance is 9 meters and the time elapsed for the ball to roll down the street is 3.5 seconds. Applying the formula we get :

S = 9 / 3.5 ≈ 2.6 metres per second

The ≈ symbols (which is the wavy equal sign) means we can't write the exact result, because there is an infinite quantity of numbers after the decimal point. So we need to give an approximation, since the result is 2.57142857142857...etc. we choosed to round up the result to 2.6.

iAnswer:

The resultant vector force = 6.96i - 9.27j

The magnitude = 11.6N

The direction= -53.1 °

Explanation:

i= 10×cos(30) + 15×cos(-60) + 9×cos(-90) + 12×cos(140) = 6.96

j= 10×sin(30) + 15×sin(-60) + 9×sin(-90) + 12×sin(140) = -9.27

Answer:

176 m west of the flagpole.

Explanation:

In exact and precise interpretation of the question the answer is 0 m as they would both crash into the pole when they got there and presumably stop having suffered broken noses and serious groin injuries.

However my GUESS as to the intent of the question is that the first to reach it will sidestep the flagpole slightly and continue on their current path until they meet and slap a high five as they pass one another.

In that case, they have 6 + 5 = 11 km to traverse at a closing rate of 9 + 8 = 17 km/hr.

They will meet in 11 km / 17 km/hr = 0.647 hrs

Bradd will have covered 9 km/hr(0.647 hr) = 5.823 km

meaning that they will be 6 - 5.823 = 0.176 km or 176 m west of the flagpole.

Pitt will have covered 8 km/hr(0.647 hr) = 5.176 km

meaning they will be 5 - 5.176 = - 0.176 km east which equals 0.176 km west of the flagpole

The answer you are looking for is S=D/T, which is the formula.

It is also read as Speed=Distance/Time, or Speed=Distance divided by Time.

The "S" stands for "Speed."

The "D" stands for "Distance."

The "T" stands for "Time."

I hope this has helped answer your question. Enjoy your day, and take care.

Answer:

The formula is S=D/T.

Explanation:

Answer:

Đương nhiên quả bóng do người thổi vào thì nặng hơn quả bóng dùng bơm bơm vì:

+ Quả bóng bơm thành phần chính là oxy, còn bóng thổi thành phần chính là CO2. CO2 đương nhiên nặng hơn oxy rồi

+ Khí do người thổi chứa rất nhiều hơi nước so với không khí nên cũng nặng hơn

+ Quả bóng xẹp đương nhiện nhẹ hơn quả bóng được bơm đẩy không khí vì không khí có khối lượng mà. Tuy nhiên sự nặng hơn này rất không đáng kể. Phải có những cân siêu chính xác và độ chia nhỏ mới thấy điều này.

Explanation:

Answer:

The Great Pyramid of Giza (also known as the Pyramid of Khufu or the Pyramid of Cheops) is the oldest and largest of the pyramids in the Giza pyramid complex bordering present-day Giza in Greater Cairo, Egypt.It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact.

Explanation:

Answer:

Explanation:

While each of these can cause erosion and weathering, lightning is probably the least important as it occurs less frequently and affects a much smaller surface area when it strikes.

Wind is not very effective by itself, but it can carry abrasives which work to degrade rock surfaces. It covers a very large area at once so the net effect can be moderate to large especially desert areas where plants are not readily available to disrupt the flow.

Rain covers huge areas and is quite common.

Freezing/Thawing cycles cover large areas and are quite common in the temperate and arctic latitudes and even in tropical altitudes.

Attached is a photo taken atop Half Dome in Yosemite National Park showing two of thousands of divots in the rock there caused by lightning strikes. The current in the lightning heats the stone causing water trapped in it to flash to steam. The increased pressure inside the stone can overwhelm the material strength and blow rock chunks over a fairly good sized area. This is a fairly rapid weathering and erosion when it occurs, but that is typically limited to a few dozen days per year and occurs mostly on high ground where lightning is more likely to strike earth.

Answer:

Pressure is the force divided by the area on which the force is exerted, and temperature is measured with a thermometer. We gain a better understanding of pressure and temperature from the kinetic theory of gases, which assumes that atoms and molecules are in continuous random motion.

[tex]{\huge{\pink{↬}}} \:  \: {\huge{\underline{\boxed{\bf{\pink{Answer}}}}}}[/tex]

The lower jaws present in the vernier callipers is used to measure the external diameter or thickness of pencils etc...

Answer:

use formula a equal to v-u by t

Answer:

7 hours 30 minutes

Explanation:

Since the car will take 1 hour to cover 100 km we can conclude that it takes 7 hours to cover 700 km, and it will take half the time to cover half the remaining distance i.e. it will take 30 minutes to cover the remaining 50 kilometers.