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PtichkaEL [24]
3 years ago
15

HELPPP PLS BESTIES A pattern of stars that has been named is called a constellation. One winter evening, Jason found the star ca

lled Sirius in the constellation called Canis Major.
If Jason came outside again a few hours later, what would the stars in Canis Major look like?
A. The pattern would be smaller because the stars moved closer together.
B. The pattern would change because each star would have moved in a different direction.
C. The pattern of stars would appear to be in the same place in the sky.
D. The pattern of stars would appear to have moved together across the sky.
Physics
1 answer:
Damm [24]3 years ago
5 0

Answer:

D) Since the stars would move from East to West just as the Sun and Moon do.

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A pendulum has a period of 1.69 s on earth. what is its period on mars, where the acceleration of gravity is about 0.37 that on
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The formula for the period of the pendulum is
T=2 \pi  \sqrt{ \frac{L}{g} }=
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Labeling with E the Earth and with M Mars, we can write the period of the pendulum on Earth as
T_E = 2 \pi  \sqrt{ \frac{L}{g_E} }
and the period of the pendulum on Mars as
T_M = 2 \pi  \sqrt{ \frac{L}{g_M} }

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\frac{T_M}{T_E}=  \sqrt{ \frac{g_E}{g_M} }
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In February 1955, a paratrooper fell 1200 ft from an
-Dominant- [34]

Answer:

s=1.1107\ m is the minimum depth of snow for survivable stopping.

Explanation:

Given:

  • terminal velocity of fall, u=56\ m.s^{-1}
  • mass of the paratrooper, m=85\ kg
  • force on the paratrooper by the ice to stop him, F=1.2\times 10^5\ N

<u>Firstly, we calculate the deceleration caused in the snow:</u>

a=\frac{F}{m}

a=\frac{120000}{85}

a=1411.765\ m.s^{-2}

Now, using equation of motion:

v^2=u^2+2a.s ....................(1)

where:

v = final velocity of the body after stopping

u = initial velocity of the body just before hitting the snow

a = acceleration of the body in the snow

s = distance through in the snow

Putting respective values in eq. (1)

0^2=56^2+2\times (-1411.765)\times s

s=1.1107\ m

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3 years ago
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