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ahrayia [7]
3 years ago
11

The surface water temperature on a large, deep lake is 3°c. a sensitive temperature probe is lowered several m into the lake. wh

at temperature will the probe recor

Physics
1 answer:
Minchanka [31]3 years ago
5 0
The deep the probe goes, the lower the temperature becomes. Therefore, the probe will record temperature lower than 3°C. The figure attached shows the relationship between temperature and depth of water.

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Describe an example of an assignment that could be used in science, technology, engineering, or mathematics that would allow a s
Mashutka [201]

Answer:

A notebook because they can take notes of what they have learned

Explanation:

4 0
3 years ago
a plane is flying 120 m above the ground at an angle of 30 degrees to the horizontal, when the pilot released 2 fuel tanks to de
charle [14.2K]

Answer:

<u></u>

  • <u>2.26 seconds</u>
  • <u>97m/s</u>

<u></u>

Explanation:

1. Fall time

<u>i) Find the vertical speed of the plane when the tanks were released</u>

         V_{y,0}=84m/s\times sin(30\º)=42m/s

That is the same initial vertical speed of the tanks.

<u />

<u>ii) Find the fall time</u>

         y-y_0=V_{y,0}\cdot t+g\cdot t^2/2

         120=42t+4.9t^2

         

         4.9t^2+42t-120=0

         

        t=\dfrac{-42\pm\sqrt{(42)^2-4(4.9)(-120)}}{2\times 4.9}

Only the positive value has aphysical meaning: t = 2.26 seconds.

2. Speed when they hit the ground

<u>i) The horizontal speed is constant:</u>

          V_x=84m/s\times cos(30\º)\approx72.5m/s

<u />

<u>ii) The vertical speed is:</u>

            V_y=V_{y,0}+g\cdot t

            V_y=42m/s+9.8m/s^2\cdot (2.26s)\approx64.1m/s

<u>iii) Total speed</u>

          V=\sqrt{V_x^2+V_y^2}

          V=\sqrt{(72.5m/s)^2+(64.1m/s)^2}\approx97m/s

6 0
4 years ago
Describe the role of capacitors in the circuit in 2 sentences
sergeinik [125]

Answer:

A capacitor is an electronic component that stores and releases electricity in a circuit. It also passes alternating current without passing direct current. A capacitor is an indispensible part of electronic equipment and is thus almost invariably used in an electronic circuit.

8 0
3 years ago
Read 2 more answers
A wave which needs a medium (solid, liquid, gas) in order to propagate itself.
Vadim26 [7]

The correct answer to the question is: Sound wave.

EXPLANATION:

Before going to answer this question, first we have to understand longitudinal wave.

A longitudinal wave is a mechanical wave in which the direction of propagation of wave is parallel to the direction of particle vibration.

This wave propagates through a medium in the form of compression and rarefaction.

Compression are the regions of high pressure zones where the particles of the medium are closely aggregated to each other.

Rarefaction is the region of low pressure where particles of the medium are not so close to each other as compared to compression.

The longitudinal wave can not propagate in space. It always needs a medium for it's propagation. The medium may be solid, liquid or gas .

For instance, sound wave is a longitudinal wave.

Hence, the correct answer of this question is sound wave which needs a medium for it's propagation.

5 0
3 years ago
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Dr. gavin decides that instead of conducting a 2 ´ 4 independent-groups factorial design, he is going to conduct a 2 ´ 4 within-
vampirchik [111]
<span>If Dr. Gavin decides that instead of conducting a 2 ´ 4 independent-groups factorial design, and he is going to conduct a 2 ´ 4 within-subjects factorial design, then the things that will change are the various independent groups which are involved.</span>
8 0
3 years ago
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