2 years ago

Our Sun is a_________ star.

Physics

2 answers:

aliina [53]2 years ago

5 0

NAMASTE :)

HERE IS YOUR ANSWER:

Our Sun is a $\boxed{high- temperature }$ star.

RUDIKE [14]2 years ago

4 0

Answer:

high temp star.

Explanation:

this is the correct answer on my odyssey ware

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A 15 n force directed to the west acts on an object for 3.0 seconds, what is the change in momentum of the object?

pickupchik [31]

By definition we have that
force=dP/dt,
where
p is momentum
so
<span>momentum is force*time
p= 15*3 = 45 Ns , west.
</span><span>the change in momentum of the object is 45 N.s</span>

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2 years ago

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kati45 [8]

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We would like to place an object 45.0cm in front of a lens and have its image appear on a screen 90.0cm behind the lens. What mu

liubo4ka [24]

Answer:

the radii of curvature is 30 cm.

Explanation:

given,

object is place at = 45 cm

image appears at = 90 cm

focal length = ?

refractive index = 1.5

radii of curvature = ?

$\dfrac{1}{f} = \dfrac{1}{u} +\dfrac{1}{v}$

$\dfrac{1}{f} = \dfrac{1}{45} +\dfrac{1}{90}$

f = 30 cm

using lens formula

$\dfrac{1}{f} = (n-1)(\dfrac{1}{R_1} -\dfrac{1}{R_2})$

$R_1 = R\ and\ R_2 = -R$

$\dfrac{1}{f} = (n-1)(\dfrac{1}{R} +\dfrac{1}{R})$

$R = (n -1)\ f$

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hence, the radii of curvature is 30 cm.

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2 years ago

When you drop a ball it accelerates downward at 9.8 m/s2. If you instead throw it downward, then its acceleration immediately af

damaskus [11]

Answer:

a. 9.8 m/s2.

Explanation:

The acceleration depends on the force of gravity. It's independent of the velocity of the ball.

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2 years ago