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aliya0001 [1]
2 years ago
12

Helpppppppp pleaseeeee!!

Physics
1 answer:
BabaBlast [244]2 years ago
3 0
Im pretty sure its nucleus !
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A student walks a distance of 3 km in 20 minutes calculate his average speed
serg [7]

Answer:

His average speed is 0.15 kilometer per minute or 2.5 meters per second.

Explanation:

average speed = distance/time

x = 3 km/20 minutes

x = 0.15

—

x = 3000 m/1200 s

x = 2.5

4 0
3 years ago
Can somebody help me understand this
Komok [63]
I think it’s C. Marshmallow and toothpicks are used to show the composition of a water molecule
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3 years ago
Which of these best explains why people on Earth cannot see the entire shape of the Milky Way
BartSMP [9]
I believe the answer is A.

Since the Earth is in the Milky Way and not outside it, we cannot see the exact shape of it. Physicists have been able to track and graph the movements of the planets accurately for thousands of years, but that does not mean we know the shape of the entire solar system.<span />
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3 years ago
What force is required to accelerate a body with the mass of 15 kilograms at a rate of 8m/s2?
Tom [10]
Force = mass * acceleration
F = 15 *8 = 120 Newton
8 0
3 years ago
Scientists have concluded that Earth is at risk of future impacts with meteoroids. What are some criteria that engineers conside
Aleksandr [31]
Answer:
Explain step by step
Explanation:
Collisions with asteroids, comets and other stuff from space have been responsible for huge landmarks in our planet’s history: global shifts in climate, the creation of our moon, the reshuffling of our deepest geology, and the extinction of species.

Asteroid threats pop up in the news every now and then, but the buzz tends to fizzle away as the projectiles pass us by. Other times, as with the 2013 Chelyabinsk meteor in Russia, we don’t know they’re here until they’re here.
Perhaps most useful to remember is that when near-Earth objects (including asteroids, comets and meteoroids) enter the atmosphere, they’re called meteors; and if there’s anything left when they hit the ground, the resulting object is called a meteorite. We tend to focus on asteroids when talking about potential collisions, because they’re more likely to hit us than other stuff like comets, but still big enough to pose a threat.
5 0
2 years ago
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