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Dmitry_Shevchenko [17]

2 years ago

15

Which force is represented by the arrow at A?

2 answers:

Nat2105 [25]2 years ago

7 0

Answer:

B) Force of gravity

Explanation:

As it is the force which acts downward on the body towards the ground, it is clearly the force gravity represented by the arrow at A.

Tom [10]2 years ago

4 0

Which force is represented by the arrow at A?

<em>B) Force of gravity</em>

<u>Let us understand the situation first and then we will understand which type of force is represented by arrow A </u>

<em>The</em><em> </em><em>line</em><em> </em><em>to</em><em> </em><em>which</em><em> </em><em>arrow</em><em> </em><em>A</em><em> </em><em>is</em><em> </em><em>being</em><em> </em><em>touched</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>ground</em><em> </em><em>and</em><em> </em><em>the</em><em> </em><em>block</em><em> </em><em>is</em><em> </em><em>being</em><em> </em><em>slid</em><em> </em><em>down</em><em> </em><em>a</em><em> </em><em>slope</em><em>.</em>
<em>The</em><em> </em><em>arrow</em><em> </em><em>A</em><em> </em><em>is</em><em> </em><em>representing</em><em> </em><em>the</em><em> </em><em>force</em><em> </em><em>that</em><em> </em><em>is</em><em> </em><em>being</em><em> </em><em>applied</em><em> </em><em>by</em><em> </em><em>the</em><em> </em><em>earth</em><em> </em><em>on</em><em> </em><em>the</em><em> </em><em>block</em><em> </em><em>and</em><em> </em><em>that</em><em> </em><em>force</em><em> </em><em>is</em><em> </em><em>Gravitational</em><em> </em><em>Force</em><em>.</em><em> </em>
<em>So</em><em>,</em><em> </em><em>Option</em><em> </em><em>B</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>correct</em><em> </em><em>choice</em><em>!</em><em>!</em><em>~</em>

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jenyasd209 [6]

a. 5.3

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3 years ago

1. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?

umka2103 [35]

Answer:

It may not be at the sea level

Explanation:

The reason here is water only boils at sea level. This means that if you move water to a different height, say top of a mountain, the boiling temperature of water would change. This is due to the pressure drop at high place. The drop of pressure would make it harder to transform water liquid to gas, thus requiring more temperature.

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3 years ago

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Unpolarized light with an intensity of 22.4 ????ux passes through a polarizer whose transmission axis is vertically oriented. (a

irina1246 [14]

Answer:

a) I₁ = 11.2 Lux , vertical direction , b) I₂ = 1.44 Lux

Explanation:

a) A polarized is a system that absorbs light that is not polarized in the direction of its axis, therefore half of the non-polarized light must be absorbed

consequently the above the processed light has half of the incident intensity and the directional of the polarized

I₁ = I₀ / 2

I₁ = 22.4 / 2

I₁ = 11.2 Lux

is polarized in the vertical direction

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I₂ = I₁ cos² θ

I₂ = 11.2 cos² 69

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8 0

3 years ago

Some of the highest tides in the world occur in the Bay of Fundy on the Atlantic Coast of Canada. At Hopewell Cape the water dep

Nady [450]

Answer:

(a) 1.939 m/h

(b) 0.926 m/h

(c) -0.315 m/h

(d) -1.21 m/h

Explanation:

Here, we have the water depth given by the function of time;

D(t) = 7 + 5·cos[0.503(t-6.75)]

Therefore, to find the velocity of the depth displacement with time, we differentiate the given expression with respect to time as follows;

D'(t) = $\frac{d(7 + 5\cdot cos[0.503(t-6.75)])}{dt}$

= 5×(-sin(0.503(t-6.75))×0.503

= -2.515×(-sin(0.503(t-6.75))

= -2.515×(-sin(0.503×t-3.395))

Therefore we have;

(a) at 5:00 AM = 5 - 0:00 = 5

D'(5) = -2.515×(-sin(0.503×5-3.395)) = 1.939 m/h

(b) at 6:00 AM = 6 - 0:00 = 6

D'(5) = -2.515×(-sin(0.503×6-3.395)) = 0.926 m/h

(c) at 7:00 AM = 7 - 0:00 = 7

D'(5) = -2.515×(-sin(0.503×7-3.395)) = -0.315 m/h

(d) at Noon 12:00 PM = 12 - 0:00 = 12

D'(5) = -2.515×(-sin(0.503×12-3.395)) = -1.21 m/h.

4 0

3 years ago

Prior to determining the experimental design, a scientist typically? A. makes observations. B. forms a hypothesis. C. performs a

Umnica [9.8K]

Prior to determining the experimental design, a scientist typically forms a hypothesis. The answer is letter B. this is to prepare the scientist, the possible outcome of their research before the experimental design whether they are wrong or not.

7 0

3 years ago