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sergiy2304 [10]
3 years ago
8

If the motor M rotates in the direction shown by the arrow as illustrated in the diagram below, what is going on? A. 1 and 2 are

going down B. 1 goes up and 2 goes down C. 1 and 2 are going up D. 1 goes down and 2 goes up 49) For the system in the diagram below to be in equilibrium, what is the mass of P in pounds? The mass at the other end of the beam is 5 kg.
Physics
1 answer:
madreJ [45]3 years ago
7 0

Answer:

C. 1 and 2 are going up

Explanation:

The motor turns counterclockwise, so the pulley above it will also turn counterclockwise.  This means the pulley to the right will turn counterclockwise.  So block 2 will move up.

Since the belt is twisted on the left side, the pulley on the left will spin in the opposite direction (clockwise).  So block 1 will also move up.

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Coherent light of frequency 6.37×1014 Hz passes through two thin slits and falls on a screen 88.0 cm away. You observe that the
IgorC [24]

Answer:

The distance between the two slits is 40.11 μm.

Explanation:

Given that,

Frequency f= 6.37\times10^{14}\ Hz

Distance of the screen l = 88.0 cm

Position of the third order y =3.10 cm

We need to calculate the wavelength

Using formula of wavelength

\lambda=\dfrac{c}{f}

where, c = speed of light

f = frequency

Put the value into the formula

\lambda=\dfrac{3\times10^{8}}{6.37\times10^{14}}

\lambda=471\ nm

We need to calculate the distance between the two slits

m\times \lambda=d\sin\theta

d =\dfrac{m\times\lambda}{\sin\theta}

Where, m = number of fringe

d = distance between the two slits

Here, \sin\theta =\dfrac{y}{l}

Put the value into the formula

d=\dfrac{3\times471\times10^{-9}\times88.0\times10^{-2}}{3.10\times10^{-2}}

d=40.11\times10^{-6}\ m

d = 40.11\ \mu m

Hence, The distance between the two slits is 40.11 μm.

7 0
3 years ago
HELP ASAP PLSSSSSSS!!!!! The scientific method often begins by asking questions about the natural world. Which of the following
grin007 [14]

Answer:

A)How does fertilizer affect plant growth

Explanation:

there are some effects of different fertilizer on plants

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2 soil amelioration

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3 years ago
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The number line shows the graph of an inequality: which statement explains whether -3.5 can be a value in the shaded region?
guajiro [1.7K]

Yes it can, because −3.5 lies to the left of −0.5.

Yes it can, because −3.5 lies to the right of −0.5.

No it cannot, because −3.5 lies to the left of −0.5.

No it cannot, because −3.5 lies to the right of −0.5.

Yes it can, because −3.5 lies to the left of −0.5.

Answer: Option A.

<u>Explanation:</u>

This option has been chosen because the left of the 0 has been shaded and all the negative values lies on the left of zero. So -3.5 lies to the left of -0.5 and is in the shaded region of the number line.

In a number line, the figure -3.5 lies on the left side compared to the number -0.5 because the higher the value on the negative side of the number line, more left it would be on the number line.

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3 years ago
According to the Newton’s first law of motion , which of the following objects will change in motion
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The correct answer is C
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crystal of a chemical in a lab slowly disappear from their container they do not become liquid this is an example of which chang
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The answer is D sublimation
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