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Makovka662 [10]
3 years ago
7

Astronauts think planets formed from interstellar dust and gases that clumped together in a process called _

Physics
1 answer:
lora16 [44]3 years ago
8 0

planetary accretion is the term that is used

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a hammer drops from a height of 8 meters. calculate the speed with which it hits the ground. show work
ioda

Answer:

12.5 m/s

Explanation:

The motion of the hammer is a free fall motion, so a uniformly accelerated motion, therefore we can use the following suvat equation:

v^2-u^2=2as

Where, taking downward as positive direction, we have:

s = 8 m is the displacement of the hammer

u = 0 is the initial velocity (it is dropped from rest)

v is the final velocity

a=g=9.8 m/s^2 is the acceleration of gravity

Solving the equation for v, we find the final velocity:

v=\sqrt{u^2+2as}=\sqrt{0+2(9.8)(8)}=12.5 m/s

So, the final speed is 12.5 m/s.

3 0
3 years ago
There’s an image here . Please help out !
ra1l [238]

Answer:

magnet 4

because opposite direction i.e north and south will attract each other

6 0
3 years ago
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Please, Help!!
Elenna [48]

Let, 1st force = a

2nd force = b

A.T.Q,

a+b = 10

a-b = 6

Calculate for a & b, you'll get a=8 & b= 2

After increasing by 3, it'll be a = 8+3 = 11 & b=2+3 = 5

Resultant force at 90 degree angle = 11+5 = 16 Newtons

7 0
3 years ago
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Why do you think a clothes dryer requires a 220-volt outlet, while a toaster only requires a 110-volt outlet?
hammer [34]

A toaster needs a 110-volt outlet because it doesn’t need too much electricity.  Electricity can be converted to heat, and toaster only needs to be heated and nothing else that requires extra electricity while clothes dyer requires higher voltage because it needs more effort and electricity in order to do its function.

3 0
3 years ago
Short-wavelength radiation from the Sun passes through a planet's atmosphere but some of the outgoing long-wavelength energy is
serious [3.7K]

Answer:Greenhouse effect

Explanation:

Short wavelength radiation from the sun passes through a  planet's atmosphere but some of the outgoing long-wavelength energy is absorbed and radiated again this process is known as Green house effect which increases the temperature of earth and as a result causes more to be trapped inside earth atmosphere.      

8 0
3 years ago
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