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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics

1 answer:

Helga [31]3 years ago

7 0

The third hour was positive acceleration and the second hour was negative acceleration

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1) When you hold your nose and go underwater, you can still hear sounds that are made above the water, in the air, if they are l

Deffense [45]

Answer:

Vibrations

Explanation:

That is why when under water it sounds muffled and you cannot hear clearly.

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2 years ago

Read 2 more answers

All magnetic fields result from the movement of

konstantin123 [22]

Don’t know sorry I’m just trying not a good person

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3 years ago

A person on a road trip drives a car at different constant speeds over several legs of the trip. She drives for 10.0 min at 50.0

irakobra [83]

<h2>The average speed for the entire trip is 47.5 m/s .</h2>

It is given that for different time span car have different speed and also the person spend $40\ min=\dfrac{40}{60}\ hrs =0.67\ hrs\ .$ in eating lunch and buying gas.

We know , average speed is total distance covered by total time taken .

Therefore , average speed , $v=\dfrac{total\ distance }{total\ times}$

$v=\dfrac{\dfrac{10}{60}\times 50+\dfrac{19}{60}\times 100+\dfrac{60}{60}\times 55}{\dfrac{10}{60}+\dfrac{10}{60}+\dfrac{60}{60}+ \dfrac{40}{60}}\\\\\\v=47.5\ m/s$

Hence, this is the required solution.

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3 years ago

If the potential difference across the bulb in a certain flashlight is 3.0 V, What is the potential difference across the combin

Svetradugi [14.3K]

Answer:

3.0 V

Explanation:

The voltage across the bulb is the voltage across the batteries, since the batteries are the only source of power for the bulb. So the voltage across the batteries is 3.0 V.

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4 years ago

A simple pendulum has a period of 3.45 second, when the length of the pendulum is shortened by 1.0m, the period is 2.81 second c

den301095 [7]

Answer:

Original length = 2.97 m

Explanation:

Let the original length of the pendulum be 'L' m

Given:

Acceleration due to gravity (g) = 9.8 m/s²

Original time period of the pendulum (T) = 3.45 s

Now, the length is shortened by 1.0 m. So, the new length is 1 m less than the original length.