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2 years ago

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How long does light take to travel from the sun to earth? heres the exact question: light travels at 300,000 km.s. The sun is a

total of 148 million kilometres from the earth. How long does it take light to travel from the sun to the earth

1 answer:

Artist 52 [7]2 years ago

4 0

I've heard it takes around 8 min

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A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones of

ZanzabumX [31]

Answer:

I think 3

Explanation:

That makes sense

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2 years ago

A long string is wrapped around a 6.6-cm-diameter cylinder, initially at rest, that is free to rotate on an axle. The string is

lys-0071 [83]

Answer:

$\omega_f=571.42\ rpm$

Explanation:

It is given that,

Diameter of cylinder, d = 6.6 cm

Radius of cylinder, r = 3.3 cm = 0.033 m

Acceleration of the string, $a=1.5\ m/s^2$

Displacement, d = 1.3 m

The angular acceleration is given by :

$\alpha =\dfrac{a}{r}$

$\alpha =\dfrac{1.5}{0.033}$

$\alpha =45.46\ rad/s^2$

The angular displacement is given by :

$\theta=\dfrac{d}{r}$

$\theta=\dfrac{1.3}{0.033}$

$\theta=39.39\ rad$

Using the third equation of rotational kinematics as :

$\omega_f^2-\omega_i^2=2\alpha \theta$

Here, $\omega_i=0$

$\omega_f=\sqrt{2\alpha \theta}$

$\omega_f=\sqrt{2\times 45.46\times 39.39}$

$\omega_f=59.84\ rad/s$

Since, 1 rad/s = 9.54 rpm

So,

$\omega_f=571.42\ rpm$

So, the angular speed of the cylinder is 571.42 rpm. Hence, this is the required solution.

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3 years ago

What did the asymptote say to the removable discontinuity worksheet answers?

ra1l [238]

“Don't hand that holier than thou line to me” is what the asymptote said to the removable discontinuity.

The distance between the curve and the line where it approaches zero as they tend to infinity is the line in the asymptote of a curve. This is unusual for modern authors but in some sources the requirement that the curve may not cross the line infinitely often is included.

The point that does not fit the rest of the graph or is undefined is called a removable discontinuity. By filling in a single point, the removable discontinuity can be made connected.

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2 years ago

Why are all machines not 100% efficient<br> A. Mass<br> B. Gravity <br> C. Friction <br> D. Distance

Anon25 [30]

All machines are not 100% efficient because of <span>C. Friction</span>

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3 years ago

Read 2 more answers

What nuclear weapon is the biggest and who currently owns this bomb

erma4kov [3.2K]

The RDS-220 <span>hydrogen bomb, soviet </span>

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2 years ago