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liq [111]
2 years ago
7

Which of the following is happening right now in the Milky

Physics
2 answers:
Oduvanchick [21]2 years ago
6 0
Its D. All of the above
serious [3.7K]2 years ago
5 0

Answer:

D) All of the above

Explanation:

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a car is moving 8.80 m/s when it begins to accelerate at 2.45 m/s^2. how much time does it take to trav 138m. please help me (':
Ulleksa [173]

Answer:

7.6 s

Explanation:

Considering kinematics formula for final velocity as

v^{2}=u^{2}+2as

Where v and u are final and initial velocities, a is acceleration and s is distance moved.

Making v the subject then

v=\sqrt{u^{2}+2as}

Substituting 8.8 m/s for u, 138 m for s and 2.45 m/s2 for a then

v=\sqrt{8.8^{2}+2*2.45*138}\\v=27.45 m/s

Also, v=u+at and making t the subject of the formula

t=\frac {v-u}{a}

Substituting 27.45 m/s for v, 8.8 m/s for u and 2.45 m/s for a then

t=\frac {27.45-8.8}{2.45}=7.6122448979591\approx 7.6s

Therefore, it needs 7.6 seconds to travel

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3 years ago
What would whales communicate about?
jeyben [28]
Where danger is and how to avoid it as well as to locate other whales
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3 years ago
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Two people are pushing on a desk to the right with a force 15n each what is the net force on the desk
dybincka [34]
30N to the right direction
3 0
3 years ago
a kid is on a skate board going 14kph and trows a set of keys on the ground at 8kph. the spped of the keys relitive to the gound
Vanyuwa [196]
To determine the speed relative to the ground, since the ground is our reference frame, it would be v = 0, for the kid on the skateboard, you would need to take into account the speed that he/she is going and the speed of the keys thrown at.

I believe.
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3 years ago
What is the standard used by scientist for mass
Licemer1 [7]
The standard measurement system used by the scientists is called: International System Of Units, or SI. The units of measurement of a few physical quantities are considered to be base units. (Also do you need the base units too cuz I can help you with that) :)
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