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3 years ago

Momentum has a _____. a. direction only b. magnitude only c. direction and magnitude

Physics

2 answers:

Elina [12.6K]3 years ago

8 0

C. Direction and Magnitude

It is a vector quantity

weeeeeb [17]3 years ago

5 0

Momentum has both direction and magnitude.

It is a vector quantity.

Its formula is = Mass * Velocity, Mass you know is associated with size and velocity of course is associated with direction.

C. direction and magnitude

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The moon is in a nearly circular orbit of radius r = 384000000 meters

PSYCHO15rus [73]

Answer:

$2.72\cdot 10^{-3} m/s^2$

Explanation:

The centripetal acceleration of an object in circular motion is the acceleration with which the object is attracted towards the center of the circular orbit. Mathematically, it is given by

$a=\frac{v^2}{r}$

where

v is the speed of the object

r is the radius of the orbit

The speed of the object is also given by the ratio between the circumference of the orbit and the orbital period, T:

$v=\frac{2\pi r}{T}$

Substituting into the previous equation, we find a new expression for the centripetal acceleration:

$a=\frac{4\pi^2 r}{T^2}$

In this problem:

- The radius of the orbit of the Moon is

$r = 384000000 m = 3.84\cdot 10^8 m$

- The period of the orbit is

$T=27.32 d \cdot 24\cdot 60\cdot 60 =2.36\cdot 10^6 s$

Therefore, the centripetal acceleration is:

$a=\frac{4\pi^2 (3.84\cdot 10^8)}{(2.36\cdot 10^6)^2}=2.72\cdot 10^{-3} m/s^2$

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3 years ago

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yulyashka [42]

Yes, if weather was hot you need more fluids in your body due to the sweat pores needing to cool you down.

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3 years ago

Using the picture below, what is the displacement of the triangle?

zavuch27 [327]

Answer:

i think it is 40 kilometers in the positive direction... if not im sorry

Explanation:

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Whitepunk [10]

The answer I believe is c
Explanation
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3 years ago

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An automobile light has a 1.0-a current when it is connected to a 12-v battery. determine the resistance of the light.

Elis [28]

<span>Resistance of automobile light is equal to 12 ohms.
</span>Resistance = Voltage / Current
where
Voltage = 12 volts
Current = 1.0 Amperes
Resistance = 12 volts/ 1.0 amperes
Resistance = 12 ohms.
Automobile light has 12 ohms resistance when it is connected to 12volts battery with 1.0 ampere current.

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3 years ago