Which task would be impossible without radio waves ?

Physics

2 answers:

lianna [129]3 years ago

7 0

Yup exactly what the other person said ! ^^i was gonna say the same

nordsb [41]3 years ago

5 0

Answer:

<em>checking your e-mail on your computer using a coffee's shop WiFi. </em>No need radio waves for this.

Explanation:

Because you are only checking it, nothing else.

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A 67 kg soccer player uses 5100 kJ of energy during a 2.0 h match. What is the

Oksanka [162]

The average power produced by the soccer player is 710 Watts.

Given the data in the question;

Mass of the soccer player; $m = 67kg$

Energy used by the soccer player; $E = 5100KJ = 5100000J$

Time; $t = 2.0h = 7200s$

Power; $P =\ ?$

Power is simply the amount of energy converted or transferred per unit time. It is expressed as:

$Power = \frac{Energy\ converted }{time}$

We substitute our given values into the equation

$Power = \frac{5100000J}{7200s}\\\\Power = 708.33J/s \\\\Power = 710J/s \ \ \ \ \ [ 2\ Significant\ Figures]\\\\Power = 710W$

Therefore, the average power produced by the soccer player is 710 Watts.

Learn more: brainly.com/question/20953664

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3 years ago

The conductors that carry the current to electrical devices and ? equipment are the heart of all electrical systems. There are a

MariettaO [177]

Answer:

utilization / effects

Explanation:

Utilization equipment are those equipment that makes use of electric energy for the purpose of chemical, electronic, lighting, heating, electro-mechanical or other alike purposes. Hence utilization best suits the first question mark in the question. Secondly, there are associated effects when current flows through a conductor, not responses.

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3 years ago

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Rom4ik [11]

The data is inadequate

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3 years ago

What is the meaning of joule

SOVA2 [1]

A joule is a unit of energy.

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3 years ago