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AlladinOne [14]
3 years ago
12

Which visible quality of smoke shows that it contains a

Physics
1 answer:
kvasek [131]3 years ago
3 0

Answer:

C: Smoke rises out of very hot substances

Explanation:

Edge

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A man has to install an instrument on top of the mast of his sailboat. He uses a bosun's chair to hoist himself up. One end of a
storchak [24]

Answer:

F - w = m a = 2 T - m g       net force on man and chair

F = 2 * 368 N = 736 N    each rope supports 368 N

a = (736 - 72 * 9.8) / 72 = .422 m/s^2

7 0
3 years ago
At a distance of 14.0 m from a point source, the intensity level is measured to be 80 dB. At what distance from the source will
Ivan

Answer:

d_2=19.8m

Explanation:

The problem can be solved easily, because the relationship between intensities I_1 and I_2 at distances d_1 and d_2 respectively can be written as:

\frac{I_2}{I_1} =\frac{d_1^2}{d_2^2}

Where:

I_1=Intensity\hspace{3}1\\I_2=Intensity\hspace{3}2\\d_1=Distance\hspace{3}1\\d_2=Distance\hspace{3}2

In this case:

I_1=80dB\\I_2=40dB\\d_1=14m\\d_2=?

Solving for d_2

d_2=\sqrt{\frac{d_1^2 *I_1}{I_2} } =\sqrt{\frac{14^2*80}{40} } =\sqrt{392} =19.79898987m\approx19.8m

8 0
3 years ago
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A car drives 23 m/s east for 35 seconds. What is the displacement of the car
DedPeter [7]

Answer:

B. 805 m east

Explanation:

Δx = (23 m/s east) (35 s)

Δx = 805 m east

5 0
3 years ago
im a boy and does anyone want to be my gf im 13 and in 7th grade and if you dont i get and if you want to yell at me i get
zhannawk [14.2K]

Answer:я русский Russia

Explanation:

5 0
3 years ago
Describe factors than can make dishes in restaurants have variable nutritional values
Pavlova-9 [17]
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Overheating food This factor can decrease the number of nutrients in a food, making it less housing different amounts of ingredients than what is called for in the recipe; overcooking, which can reduce the vitamin content; substituting cooking oils, which can add or reduce the amount of calories and fat; and adjusting portion sizes, which may make them too large or too small.althy for eating.
HAve a nice day
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4 years ago
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