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2 years ago

What is the wave where the oscillation is perpendicular to the direction of motion.

1 answer:

4 0

A. Oscillating magnetic fields are parallel to oscillating electric fields, which are perpendicular to the direction of wave motion.

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Strike441 [17]

Answer:

it have to be a

Explanation:

3 0

3 years ago

Large wind turbines with a power capacity of 8 MW and blade span diameters of over 160 m are available for electric power genera

kkurt [141]

Answer:

Electric power generated= 26544kWh

Power generated by the turbine = 1105.98kw

Revenue per day = $2388.96

Explanation: Given

Air density, air=1.25kg/m3

Overall efficiency = 0.44

Diameter of turbine = 100m

Velocity= 8m/s

Unit price of electric power generated =$ 0.09

The expression for electric power generated is the product of overall efficiency and change in kinetic energy of turbine blade

n overall = W/mv^2/2

Rearranging the equation gives

W = noveral × mv2/2

W = overall × (pAv)v^2/2

W = overall × pAv^3/2

W = noverall × pAv^3/2

W = no real × pair ×pi/4 d^2×v^3/2

W = 0.44×1.25×(3.142/4 )× 100^2 × (8^3/2)

W = 1105.98kW

Electric energy power per day = E = Wt = 1105.98× 24hrs = 26544Wh

Revenue generated per day = E × Runit

= 26544 × $0.09 = $ 2388.96

8 0

3 years ago

Read 2 more answers

A book with a mass of 1.2 kg sits on a bookshelf. If it has a gravitational

Andreyy89

I'm sorry, I just saw this. I hope I'm not too late.

GPE = mass * gravity * height

height = GPE/(mass * gravity)

height = 50/(1/2 * 9.8)

height = 10.2041 Meters

6 0

3 years ago

A metallic sheet has a large number of slits, 5.0 mm wide and 20 cm apart, and is used as a diffraction grating for microwaves.

Aleksandr-060686 [28]

Answer:

The smallest microwave frequency is 1.5 GHz.

Explanation:

Given that,

Distance d= 20 cm

We need to calculate the wavelength

Using formula for maximum diffraction

$d\sin\theta=\lambda$

For maximum, $\sin\thea=1$

$d=\lambda$

$\lambda=20 cm=0.2 m$

We need to calculate the frequency

$f =\dfrac{c}{\lambda}$

$f=\dfrac{3\times10^{8}}{0.2}$

$f=1.5\times10^{9}\ Hz$

$f=1.5 GHz$

Hence, The smallest microwave frequency is 1.5 GHz.

4 0

4 years ago

Which of the following is not an accurate statement about the attitude of teenagers when driving

AVprozaik [17]

where are the following ???

7 0

4 years ago