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Gnoma [55]
3 years ago
6

A subway car moves at a constant speed of 10 m/s over a period of 10 s. What is the instantaneous speed halfway through this mot

ion​
Physics
1 answer:
andre [41]3 years ago
5 0

Answer:  10 m/s

We're told the speed is constant, so it's not changing throughout the time period given to us. So throughout the entire interval, the speed is 10 m/s.

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The closest star to our solar system is Alpha Centauri, which is 4.12 × 10^16 m away. How long would it take light from Alpha Ce
bonufazy [111]

Time = (distance) / (speed)

Time = (4.12x10^16 m) / (3 x10^8 m/s)

Time = 1.37 x 10^8 seconds

Divide the seconds by 86,400 to get days. Then divide the days by 365 to get years.

Time = about 4.35 years

4 0
3 years ago
Why is argon gas used instead of air in light bulbs that contain a filament that is heated to glowing?
tamaranim1 [39]
<span>the heated filament will react with the oxygen in the air but now with the argon, which is a noble gas and hardly ever reacts.</span>
3 0
3 years ago
You see a lightning bolt flash in the distant sky. You hear the corresponding thunder 6.8 seconds later. If the temperature is 2
Anna35 [415]

Answer:

Distance = 2.4\ km

Explanation:

Given

Time (t) = 6.8s

Temperature = 28C

Required

Determine the distance at which the lighting struck

First, we need to determine the speed at which the lighting struck because the peed of sound varies with temperature.

At about 28C, the speed of sound is 346m/s

So, we have the following:

Speed = 346m/s

Time = 6.8s

Distance is calculated as thus:

Distance = Speed * Time

Distance = 346m/s * 6.8s

Distance = 2352.8

Divide by 1000 to get distance equivalent in kilometers

Distance = \frac{2352.8km}{1000}

Distance = 2.3528km

Distance = 2.4\ km ---- Approximated

7 0
3 years ago
Dhorpatan hunting reserve doesn't affect rare animals.​
Eddi Din [679]

Answer:

Pheasants and partridge are common and their viable population in the reserve permits controlled hunting. Endangered animals in the reserve include Musk deer, Wolf, Red panda, Cheer pheasant and Danphe. The hunting license is issued by the Department of National Parks and Wildlife Conservation.





HOPE THIS HELPS, HAVE A GREAT DAY!!

Explanation:

4 0
2 years ago
I’ll name u BRAINLIEST if u get this right
nekit [7.7K]
V = m1 u1 - m2 u2 / m1
v = 0.01 * 500 - 2 * 1.4 / 0.01
v = 220 m/s
7 0
2 years ago
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