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3 years ago

8

Which lens is shown in the diagram?

2 answers:

Deffense [45]3 years ago

7 0

Answer:

Concave lens

Explanation:

mojhsa [17]3 years ago

5 0

Where's the diagram?

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Which of the following is true?

fenix001 [56]

Answer:

Its either A. Or C cause ive had a question like this before So Im sure But if not Then Im so sorry

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3 years ago

Calculate the speed of an 8.0x10^4 kg airliner with a kinetic energy of 1.1x10^9 j ...?

Over [174]

Kinetic energy is the energy possessed by an object on motion. it is expressed as follows:

KE = 0.5mv^2

where m is the mass and v is the velocity of the object. We calculate as follows:

KE = 0.5mv^2
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v = 165.83 m/s

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3 years ago

Please correct answers only, if you don’t know, ignore. Please answer this or am I correct?

Wewaii [24]

Answer:

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Explanation:

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3 years ago

Read 2 more answers

A person sitting on a pier observes incoming waves that have a sinusoidal form with a distance of 2.5 m between the crests. Of a

Doss [256]

Answer:

Part(a): The frequency is $\bf{0.2~Hz}$ .

Part(b): The speed of the wave is $\bf{0.5~m/s}$ .

Explanation:

Given:

The distance between the crests of the wave, $d = 2.5~m$ .

The time required for the wave to laps against the pier, $t = 5.0~s$

The distance between any two crests of a wave is known as the wavelength of the wave. So the wavelength of the wave is $\lambda = 2.5~m$ .

Also, the time required for the wave for each laps is the time period of oscillation and it is given by $T = 5.0~s$ .

Part(a):

The relation between the frequency and time period is given by

$\nu = \dfrac{1}{T}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(1)$

Substituting the value of $T$ in equation (1), we have

$\nu &=& \dfrac{1}{5.0~s}\\~~~&=& 0.2~Hz$

Part(b):

The relation between the velocity of a wave to its frequency is given by

$v = \nu \lambda~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(2)$

Substituting the value of $\nu$ and $\lambda$ in equation (2), we have

$v &=& (0.2~Hz)(2.5~m)\\~~~&=& 0.5~m/s$

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3 years ago

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Neko [114]

A defective protein would be produced leading to either that protein cell being killed or developing into a cancer

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3 years ago