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3 years ago

12

Maya kicks a soccer ball 40 N towards east. At the exact same time, Casey kicks

1 answer:

Akimi4 [234]3 years ago

3 0

Answer:

GDXMZC<XZDFSaYTULRSHYADTGVS

Explanation:

KJ.KHG<DCŞJHJdjhgjöfhds DCSLÇKÖJMNHBGEVCYRWX

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How is energy transferred between objects or systems?

stira [4]

by conduction within solids, by the flow of liquid or gas (convection), and by radiation, which can travel across space. Even when a system is isolated (such as Earth in space), energy is continually being transferred into and out of it by radiation.

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3 years ago

Sally travels by car from one city to another. She drives for 30 min at 80 km/hr, 12 min at 105 km/hr, and 45 min at 40 km/hr, a

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A. 53.5 km/h B. 91.0 km/h

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3 years ago

Read 2 more answers

A sound wave is moving through air. The wave has a wavelength of 0.65 m and a frequency of 512 Hz. Calculate the speed of the wa

nexus9112 [7]

Answer:

"332.8 m/s" is the right solution.

Explanation:

The given values are:

Wavelength,

$\lambda=0.65 \ m$

Frequency,

$f = 512 \ Hz$

As we know,

⇒ $Speed=Frequency\times Wavelength$

or,

⇒ $V=f\times \lambda$

By putting the given values in the above relation, we get

⇒ $=512\times 0.65$

⇒ $=332.8 \ m/s$

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3 years ago

Your car's 30.0 W headlight and 2.50 kW starter are ordinarily connected in parallel in a 12.0 V system. What power (in W) would

Tatiana [17]

Answer:

<h3>The power of headlight in series connection is 29.64 W</h3>

Explanation:

Given :

Power of headlight $P_{1} = 30$ W

Power of starter $P_{2} = 2500$ W

Voltage of headlight and starter $V = 12$ V

From equation of power,

$P = \frac{V^{2} }{R}$

$R = \frac{V^{2} }{P}$

For finding the resistance of headlight and starter,

⇒ For headlight,

$R_{1} = \frac{144}{30} = 4.8$ Ω

⇒ For starter,

$R_{2} = \frac{144}{2500} = 0.057$ Ω

Since equivalent resistance,

$R_{eq} = R_{1} + R_{2} + ........$

$R_{eq} = 4.8 +0.057 = 4.857$ Ω

So power in series is given by,

$P_{s } = \frac{V^{2} }{R_{eq} } = \frac{144}{4.857}$

$P_{s } = 29.64$ W

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3 years ago

The magnitude of the electric force between two particles depends on which factors

lubasha [3.4K]

Directly proportional to the product of the two charges and inversely proportional to the square of the distance between them

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3 years ago