3 years ago

What Type of Wave is Shown Below? PLZ ANSWER I'M ALREADY FAILING AT THIS SUBJECT!

Physics

1 answer:

uranmaximum [27]3 years ago

8 0

Answer:

A......................

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Pierre is a 375 kg great white with an average speed of 3 m/s. When Pierre spots a seal, he increases his velocity to 7 m/s. Aft

tangare [24]

Answer:

1890J

Explanation:

375+45 = 420kg (total mass)

kinetic energy = 1/2 × mass × velocity²

1/2 × 420 × 3² = 1890J

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3 years ago

An element has a charge of -3, has 8 protons, 11 neutrons, and electrons

Sati [7]

Question isn’t clear
If it’s asking the no of electrons then -
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3 years ago

Which of the following are common sorces of radio waves ?

alexgriva [62]

It would help if there are some options, but some common sources:
Televisions
Microwave Ovens
Cell Phones
Satellites
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CD players
etc.

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3 years ago

5 ohm resistor is in series with a bulb, a switch and a 12V battery.

Nikitich [7]

Answer: yo light bill finna be turnt off im just kidding 1`

Explanation:

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4 years ago

A train is traveling away from you at 120 km/h. it blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound

Vaselesa [24]

Answer:B)439.21 Hz

Explanation:

Given

velocity of train $v=120 km/h\approx 120\times \frac{5}{18}=33.33 m/s$

frequency of train $f_a=0.400 kHz\approx 400 Hz$

speed of sound $c=340 m/s$

frequency from Doppler effect can be calculated by

$f_a=(\frac{c}{c+v})\cdot f$

$400=(\frac{340}{340+33.33})\cdot f$

$400=\frac{340}{373.33}\cdot f$

$f=400\times 1.098$

$f=439.21 Hz$

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3 years ago