Ask question

Ask question

All categories

3 years ago

5

A specific example of how light year is used in space exploration. Pick one object in space (the nearest star, the nearest galax

y, the edge of the universe, etc.) and tell how far this object is from earth and how long it would take light to travel there.

1 answer:

VladimirAG [237]3 years ago

5 0

Alpha Centauri A is about 93 million miles away from the Earth and it takes light 4.367 years to reach there.

You might be interested in

Compare the catching of two different water balloons. Case A: A 600-mL water balloon moving at 8 m/s is caught and brought to a

Vadim26 [7]

Answer:

jduruhrjrhryyrurjjrjrh4h5ghrrhrhhrhrhrhrrhrhrh sus

Explanation:

jdhshhehehehje

8 0

3 years ago

Read 2 more answers

An object is 50 cm from a converging lens with a focal length of 40 cm . A real image is formed on the other side of the lens, 2

Leno4ka [110]

Answer:

d) -4.0

Explanation:

The magnification of a lens is given by

$M=-\frac{q}{p}$

where

M is the magnification

q is the distance of the image from the lens

p is the distance of the object from the lens

In this problem, we have

p = 50 cm is the distance of the object from the lens

q = 250 cm - 50 cm is the distance of the image from the lens (because the image is 250 cm from the obejct

Also, q is positive since the image is real

So, the magnification is

$M=-\frac{200 cm}{50 cm}=-4.0$

7 0

3 years ago

When Woods hits a 0.04593 kg golf ball, the golf ball is usually traveling around 281 kilometers per hour. What average force do

Semenov [28]

Answer:

128.9 N

Explanation:

The force exerted on the golf ball is equal to the rate of change of momentum of the ball, so we can write:

$F=\frac{\Delta p}{\Delta t}$

where

F is the force

$\Delta p$ is the change in momentum

$\Delta t=0.030 s$ is the time interval

The change in momentum can be written as

$\Delta p = m(v-u)$

where

m = 0.04593 kg is the mass of the ball

u = 0 is the initial velocity of the ball

$v=281 km/h =78.1 m/s$ is the final velocity of the ball

Substituting into the original equation, we find the force exerted on the golf ball:

$F=\frac{m(v-u)}{\Delta t}=\frac{(0.04593)(78.1-0)}{0.030}=128.9 N$

7 0

3 years ago

Why are negative ions usually larger than positive ions

irga5000 [103]

A negative ion is a atom that has an extra electron, but the same # of protons

4 0

3 years ago

Read 2 more answers

Which option defines green computing?

Papessa [141]

Study and practice of environmental sustainable computing or It. such as monitors, printers, storage devices, and networking and communication systems-efficiently and effectively with minimal impact on the environment.

4 0

3 years ago

Read 2 more answers