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elixir [45]
3 years ago
11

Explain how you calculate the speed of a wave

Physics
1 answer:
Scilla [17]3 years ago
4 0
Frequency times wavelength
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What determines the voltage of a light bulb?
valentinak56 [21]
The power source its getting usually determines its voltage.
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3 years ago
A metal wire of resistance R is cut into six equal pieces that are then placed together side by side to form a new cable with a
STALIN [3.7K]

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3 0
3 years ago
According to Ohm's law, which is stated as I = V + R, which two sentences are true?
Novay_Z [31]

So, If the resistance decreases, then the current increases. Assume voltage is constant.

If the voltage increases, then the current increases. Assume resistance is constant.

Explanation:

According to the ohm's law; I = V/R;

  • If the resistance decreases the current increases assuming that the voltage is constant
  • if the voltage increases, then the current increases assuming that the resistance is constant.

Based on Ohm's law, we know that the current through a metallic conductor is directly proportional to the voltage across the ends.

From the relationship;

                 I = \frac{V}{R}

        we see that  V = IR

These equations affirms that

  • If the resistance decreases the current increases assuming that the voltage is constant based on the second equation

  • if the voltage increases, then the current increases assuming that the resistance is constant based on the first equation.

learn more:

Electric circuit brainly.com/question/10421964

#learnwithBrainly

7 0
3 years ago
A 150 kg cart is being accelerated by a tractor at a rate of 5 m/s². How much force is the tractor putting on the cart?
Hunter-Best [27]
Force = mass * acceleration
so, F = 150* 5
F = 750 N
5 0
3 years ago
If the absolute pressure inside the bottom of a container open to the atmosphere and filled with an unknown substance is 300 Pa.
anyanavicka [17]

Answer:

2.5 kg/m³

Explanation:

Absolute pressure = gauge pressure + atmospheric pressure

P = Pg + Pa

The gauge pressure caused by the weight of a fluid is called the static pressure.  It is equal to the density of the fluid × acceleration due to gravity × depth of the fluid,

Pg = ρgh

Therefore:

P = ρgh + Pa

300 Pa = ρ (10 m/s²) (8.00 m) + 100 Pa

ρ = 2.5 kg/m³

6 0
3 years ago
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