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Ksju [112]
3 years ago
11

Rank the vector combinations on the basis of their magnitude.

Physics
1 answer:
melomori [17]3 years ago
6 0

I think this is about the 5th or 6th time I've seen this question
submitted to Brainly.  So far, nobody has yet given us any of
the rest of the question ... the part that tells us something about
the vectors, so that we have some way to know their magnitudes.
So far, nada.

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Suppose a profit-maximizing firm in a competitive market produces rubber bands. When the market price for rubber bands falls bel
Dennis_Churaev [7]

Answer:

Explained

Explanation:

In the given example, a profit-maximizing perfectly competitive firm is producing rubber bands. The average total cost of producing is higher than the price per unit of the product. The firm will be incurring a loss. But the average variable cost is lower than price. This means the price is able to cover variable costs.  

The firm in this situation will continue to produce in the short run, Though in the long run if the price is still lower than the average total cost the firm will exit the market because of incurring losses.

3 0
3 years ago
A 75 kg astronaut has become detached from their her space ship. To get back to the ship she throws a tool in the opposite direc
Volgvan

Answer:

0.21 m/s/s.

Explanation:

Whenever there is an action force acting on a body, there will be a reaction force.

Here the force with which the astronaut throws the tool is given as 16 N.

Force is measured in newtons and is equal to the rate of change of momentum.

Since the astronaut has a mass, she experience a reaction force. It is given by F = ma, according to Newton's 2nd law.

16 = 75 a

⇒ Acceleration = a = F/m = 16/75 = 0.21 m/s/s

4 0
4 years ago
1. Which of the following explains why a bicycle uses the pedals as a lever to move the heavy rider along the sidewalk?
olga_2 [115]
<span>1. Which of the following explains why a bicycle uses the pedals as a lever to move the heavy rider along the sidewalk?
</span>
C. reduces the resistance force
The mechanical advantage of a compound machine is related to the mechanical advantage of all the simple machines involved.
True
5 0
3 years ago
Read 2 more answers
The above stress can be also approximated by a sinusoidal function (i.e. sine wave) with an average 3,811 kPa, amplitude 430 kPa
stepan [7]

Answer:

306.08 kPa

Explanation:

Given data

Average stress of first wave = 3811 kPa

amplitude of first wave ( A1 ) = 430 kPa

Frequency of first wave = 6 Hz

<u>Determine the average stress of the second sinusoidal component in kPa </u>

Amplitude of the additional wave (A2add) = \frac{A1}{2}  =  430 / 2 = 215 kPa

next we will determine the resultant amplitude of the second wave

A2 = \sqrt{A^{2} _{1} }  + A^{2} _{2add} + 2A_{1}A_{2add}  Cos\alpha

     = \sqrt{430^2+ 215^2 + 2(430*215) * cos 90}

     = \sqrt{184900 + 46225  }

     = \sqrt{231155}  = 480.79

hence the average stress of the second sinusoidal component

= \frac{2A_{2} }{\pi }

=  \frac{2 * 480.79 }{\pi }  =  306.08 kPa

6 0
3 years ago
A highway curves to the left with radius of curvature of 36 m and is banked at 28 ◦ so that cars can take this curve at higher s
iVinArrow [24]

Answer: 30.34m/s

Explanation:

The sum of forces in the y direction 0 = N cos 28 - μN sin28 - mg

Sum of forces in the x direction

mv²/r = N sin 28 + μN cos 28

mv²/r = N(sin 28 + μcos 28)

Thus,

mv²/r = mg [(sin 28 + μ cos 28)/(cos 28 - μ sin 28)]

v²/r = g [(sin 28 + μ cos 28)/(cos 28 - μ sin 28)]

v²/36 = 9.8 [(0.4695 + 0.87*0.8829) - (0.8829 - 0.87*0.4695)]

v²/36 = 9.8 [(0.4695 + 0.7681) / (0.8829 - 0.4085)]

v²/36 = 9.8 (1.2376/0.4744)

v²/36 = 9.8 * 2.6088

v²/36 = 25.57

v² = 920.52

v = 30.34m/s

5 0
4 years ago
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