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3 years ago

6

if a star 100 light years from earth is beginning to expand into a giant star how long will it take for astronomers to observe t

his development explain

1 answer:

VikaD [51]3 years ago

7 0

Answer:

100years later

Explanation:

Because the lights will arrive at world after 100 years later.

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What is water potential???

melisa1 [442]

Answer:

Water potential is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure and matrix effects such as capillary action.

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3 years ago

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Pls help i give brainliest

san4es73 [151]

Answer:

a.

Explanation:

cuz whenever the ball was traveling up the staircase it was building up energy to use (potential energy) unlike b.

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A centrifuge in a medical laboratory rotates at an angular speed of 3,500 rev/min, clockwise (when viewed from above). When swit

Ratling [72]

Answer:

The magnitude of angular acceleration is $232.38\ rad/s^2$ .

Explanation:

Given that,

Initial angular velocity, $\omega_i=3500\ rev/min=366.5\ rad/s$

When it switched off, it comes o rest, $\omega_f=0$

Number of revolution, $\theta=46=289.02\ rad$

We need to find the magnitude of angular acceleration. It can be calculated using third equation of rotational kinematics as :

$\omega_f^2-\omega_i^2=2\alpha \theta\\\\\alpha =\dfrac{-\omega_i^2}{2\theta}\\\\\alpha =\dfrac{-(366.51)^2}{2\times 289.02}\\\\\alpha =-232.38\ rad/s^2$

So, the magnitude of angular acceleration is $232.38\ rad/s^2$ . Hence, this is the required solution.

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3 years ago

in the system to the right, the pulleys are frictionless and the system hangs in equilibrium. Determine the values of each of th

irga5000 [103]

Look up pulleys problem through Khan academy and a video should pop up with a problem similar and you should be able to walk through it .

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3 years ago

Ft-Fg= ma solve for a

densk [106]

The answer is a= Ft-Fg/m

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