All categories

3 years ago

When does a nebula become a star?

Physics

1 answer:

pashok25 [27]3 years ago

7 0

When the contracting gas and dust from nebula become so dense and hot that nuclear fusion starts

You might be interested in

A car moves at speed v across a bridge made in the shape of a circular arc of radius r. (a) Find an expression for the normal fo

inna [77]

Answer:

(a) FN = m (g - $\frac{v^{2} }{r}$ )

(b) vmin = 17.146 m/s

Explanation:

The radius of the arc is

r = 30m

The normal force acting on the car form the highest point is

FN = m (g - $\frac{v^{2} }{r}$ )

If the normal force become 0 we have

m (g - $\frac{v^{2} }{r}$ ) = 0

g - $\frac{v^{2} }{r}$ = 0

This way, when FN = 0, then v = vmin, so

g - $\frac{vmin^{2} }{r}$ = 0

vmin = $\sqrt[.]{g*r}$ = $\sqrt[.]{9.8 m/s^{2} * 30m } = 17.146 m/s$

4 0

3 years ago

Energy is the ability to

bekas [8.4K]

A.... As energy is the ability to do work... And exerting force and transfering heat falls under work

8 0

2 years ago

Read 2 more answers

How many electrons can a nucleas hold

Hoochie [10]

A nuclear can hold 2 electrons

5 0

2 years ago

Which of the following is not an essential feature of scientific explanations?

sineoko [7]

Answer:

D I think I might be wrong its been a while scense I did something like that

4 0

2 years ago

WILL MARK BRAINLIEST IF RIGHT & HAS EXPLINATION

Colt1911 [192]

Answer:

s= 64m I'm not 100% sure

Explanation: like 97.9%

7 0

2 years ago