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2 years ago

Describe a situation when you might travel at a high velocity bit with low acceleration

1 answer:

5 0

I am sitting in my seat.
I am listening to my mp3 and reading my book.
My eyes are getting heavy. They start to close.
I try to stay awake, but it's no use.
I am so warm and comfortable and sleepy,
and I have just finished my dinner.
Finally I can't help it. Resistance is futile.
I give up, and fall deep asleep.
My head rests back against my soft, comfy seat.

My seat is in row 26 on the airplane I'm flying in
to visit my grandmother on the coast.
We are cruising at 560 miles an hour, bearing 280°,
at flight level 320 .
The temperature outside my window is -60°F .

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2 years ago

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3 years ago

A and B start walking in the same direction at the same time around a circular park of diameter 4200 m. If A walks 10 m more tha

Liono4ka [1.6K]

Answer:

Va = 5000 m / 3600 s = 1.39 m/s

(Va - Vb) 60 = 10

Vb = Va - .167 = 1.22 m/s

(Va - Vb) T = 4200 Π where T is time for A to complete 1 more lap

.17 T = 4200 Π

T = 24700 Π time for A to again catch B

N = 1.39 * 24700 Answer:

Va = 5000 m / 3600 s = 1.39 m/s

(Va - Vb) 60 = 10

Vb = Va - .167 = 1.22 m/s

(Va - Vb) T = 4200 Π where T is time for A to complete 1 more lap

.17 T = 4200 Π

T = 24700 Π time for A to again catch B

N = 1.39 * 24700 Π / (4200 Π) = 8.2 laps

A will make 8 but not 9 rounds before catching B

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1 year ago

Two people with a combined mass of 127 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress

Elena-2011 [213]

Answer:

Total load = 2999.126 kg

Explanation:

Let the spring constant of the shock absorber be k.

We know that the force applied on a spring is directly proportional to elongated length and the constant of proportionality is called spring constant.

Thus

Force, F = kx

where,

x = elongation = 9.1 cm 0.091 m

mass of the people, m = 127 kg

F = weight of the people = mg = 127 x 9.8 = 1244.6 N

substituting these values in the first equation,

1244.6 = k x 0.091

thus, k = 13,676.923 N/m

Now we know that the time period, T of an oscillating spring with a load of mass m is

$T = 2\pi \sqrt{\frac{m}{k} }$

$\frac{m}{k} = \frac{T^{2} }{4\pi ^{2} }$

thus,

$m = k\frac{T^{2} }{4\pi ^{2}}$

T = 1.66s

substituting these values in the equation,

$m =13,676.923\frac{1.66^{2} }{4\pi ^{2} }$

m = 2999.126 kg

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3 years ago

Why is the core the only layer of the Sun where energy is produced?

son4ous [18]

Answer:

The core is the only layer of the Sun where energy is produced because that is where the fusion process occurs between hydrogen and helium atoms.There, the hydrogen atoms being converted into helium molecules.

HOPE IT HELPS!

6 0

3 years ago

Read 2 more answers