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2 years ago

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Physics

2 answers:

zubka84 [21]2 years ago

8 0

Thank you very much, very much appreciated.

Eddi Din [679]2 years ago

5 0

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You might be interested in

How is pressure and density related?

enyata [817]

Answer:

Density is directly proportional to pressure

Explanation:

As pressure increases (with constant temperature), density also increases.

Density is inversely proportional to temperature.

5 0

2 years ago

In which activities is speed helpful? Running track Swimming Riding in a bike race All of the above

Burka [1]

Answer:

all of the above

Explanation:

they all require speed to beat

6 0

2 years ago

Read 2 more answers

an air craft is travelling due north with velocity of 100m/s astrong wind blow from the west with in velocity of 25m/s the reshs

OleMash [197]

Explanation:

The aircraft is traveling north at 100 m/s.

The wind blows from the west (towards the east) at 25 m/s.

The two vectors form a right triangle. The magnitude of the resultant velocity can be found with Pythagorean theorem:

v² = vx² + vy²

v² = (25 m/s)² + (100 m/s)²

v = 103 m/s

The direction can be found with trigonometry:

θ = atan(vy / vx)

θ = atan(100 / 25)

θ = 76.0°

The resultant velocity is 103 m/s at 76.0° north of east.

8 0

2 years ago

A flask is filled with 1.57 L (L: liter) of a liquid at 90.6 °C. When the liquid is cooled to 10.2 °C, its volume is only 1.38 L

nydimaria [60]

The coefficient of volume expansion of the liquid = 1.97 × 10⁻³ /⁰C

<h3>What is the coefficient of volume expansion of the liquid?</h3>

The amount of volume that a substance expands by per unit of its original volume for each degree that its temperature rises is known as the coefficient of volume expansion.

As we know, The coefficient of volume expansion of the liquid

= change in volume/(original volume × temperature difference)

= (V₂ - V₁)/[V₁ × (T₂ - T₁)]

Change in volume = (V₂ - V₁)

Here, V₂ ( final volume) = 1.31 L

V₁ (initial volume)= 1.55 L

T₂ (final temperature) = 14.7 degrees

T₁ (initial temperature) = 96 degrees

The coefficient of volume expansion of the liquid

= (1.31 - 1.55) / [1.5 × (14.7- 96)]

= 1.97 × 10⁻³ /⁰C

Thus, the coefficient of volume expansion of the liquid = 1.97 × 10⁻³ /⁰C

To know more about coefficient of volume expansion refer to:

brainly.com/question/24042303

#SPJ1

8 0

1 year ago

A point source is fixed 1.0 m away from a large screen. Call the line normal to the screen surface and passing through the cente

lubasha [3.4K]

Answer:

d=0.02m

Explanation:

The key of the exercise is to be able to graph the problem to be able to develop it. After that you simply proceed through a triangular relationship.

Then I leave the graph of the problem and give the solution.

So things, under the given relationship, we have,

$\frac {0.04} {0.5} = \frac {d} {0.25}$

<em> *The value of 0.04 is taken because the triangle given in the graph must be divided in half, to obtain rectangular triangles.</em>

$d = \frac {0.04 * 0.25} {0.5}$

$d = 0.02m$

3 0

3 years ago