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2 years ago

PLEASE HELP THIS IS DUE TODAY!! (GIVING BRAINLIEST TO WHOEVERY ANSWERS QUICKLY AND CORRECTLY!) 15 POINTS!

1 answer:

5 0

As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf. ... Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence

hydrogen shell burning - outer layers swell. Red Giant Branch - helium ash core compresses - increased hydrogen shell burning. First Dredge Up - expanding atmosphere cools star - stirs carbon, nitrogen and oxygen upward - star heats up.

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A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 14.0 N.

Sati [7]

Answer

given,

mass of crate = 32.5 Kg

horizontal force = 14 N

initial speed, u = 0 m/s

a) acceleration produced = ?

we know,

F = m a

$a = \dfrac{F}{m}$

$a = \dfrac{14}{32.5}$

a = 0.431 m/s²

b) using equation of motion

t = 10 s

$s = ut + \dfrac{1}{2}at^2$

$s = 0 + \dfrac{1}{2}\times 0.431\times 10^2$

s = 21.54 m

c) again using equation of motion

v = u + at

v = 0 + 0.431 x 10

v = 4.31 m/s

4 0

3 years ago

7) The acceleration due to gravity near the surface of Mars is about one-third of the value

Doss [256]

Answer:

C) three times slow than on earth

8 0

3 years ago

A man has a power of 90 W and mass 60 kg runs up a staircase in 40 s. If each staircase is 20cm high find the number of steps? (

34kurt

I showed my working in the images above. if you have any questions please feel free to ask

4 0

2 years ago

Que carro ese que está en la foto

Taya2010 [7]

Travis Scott!3&;8284$28&:!;&29395

7 0

2 years ago

Read 2 more answers

2. Three super strong teenagers pull a heavy crate across the floor. Dion pulls with a force of 18.5 N towards 0°. Shirley pulls

kogti [31]

Answer:

A) The resultant force is 43.4 [N]

B) The movement of the heavy crate is going to the right and in the negative direction on the y-axis

Explanation:

We need to make a sketch of the different forces acting on the heavy crate.

In the attached image we can see the forces and the sum of the vector with their respective angles.

Forces in the X-axis

$Fdionx=18.5N\\\\Fshix=16.5*cos(30)=14.29N\\Fjoanx=19.5*cos(60)=9.75N\\\\Forcex= 18.5 + 14.29 + 9.75 = 42.54 N$

Forces in the y-axis

$FDiony=0[N]\\Fshirley= 16.5*sin(30)=8.25[N]\\Fjoany=19.5*sin(60)=16.88 [N]\\\\Forcesy=0+8.25-16.88= -8.63[N]$

Using the Pythagorean theorem

$Tforce=\sqrt{(42.54)^{2} +(8.63)^{2} } \\\\Tforce= 43.4N$

The movement of the heavy crate is going to the right and in the negative direction on the y-axis, this can be easily seen in the graphical sum of vectors.

8 0

2 years ago