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Vera_Pavlovna [14]
1 year ago
14

A student who was training for a cross country race jogged for 2. 0 hours and covered a distance of 14. 0 kilometers. What was t

he average speed of the student?.
Physics
1 answer:
FinnZ [79.3K]1 year ago
6 0

The average speed is 116.66m/s.

Given - The path traced is 14km , time for jogging is 2 hrs=120min

To find the average speed-

  1. Speed refers to the ease of the movement and degree of mobility as a result of force application.
  2. Due to this there is involvement of velocity.
  3. Journey of average speed is the cumulative of distances and time.
  4. Kinetic theory refers to the Boltzmann constant connecting to the standards of distance traversed.

calculations-

Speed= \frac{Distance}{Time}

Speed= 14 000 / 120

= 116.66m/s

To learn more about average speed -

<u>brainly.com/question/27753148</u>

#SPJ4

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An electromagnet is created using a battery, an insulated copper wire and an iron nail. The wire is wrapped around the nail 20 t
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The strength of the electromagnet will be increased with increase in the voltage of the battery and increase in the number of turns of the coil.

Answer: Option C

<u>Explanation: </u>

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This is because each turn of the copper wire will act a small region of electromagnet which when added up will lead to increase in the strength of the electromagnet. Similarly,  the electromagnet's strength will also increase when the current flowing in the solenoid is increased.

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7 0
3 years ago
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An object with a mass of 2.0 kg is accelerated at 5.0 m/s/s. the net force acting on the mass is
Vitek1552 [10]
First we need to know the equation:
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7 0
4 years ago
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An engine extracts 452.8kJ of heat from the burning of fuel each cycle, but rejects 266.7 kJ of heat (exhaust, friction,etc) dur
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Answer: The thermal efficiency of the engine is 41.09 %.

Explanation:

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Formula for thermal efficiency of engine is

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Putting in the values we get:

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The thermal efficiency of the engine is 41.09 %.

7 0
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