What’s up world or people

What is the most likely place for a star to begin to form?

Rufina [12.5K]

Answer:

Stars are born within the clouds of dust and scattered throughout most galaxies. Deep within these clouds, turbulence creates knots with enough mass to cause the gas and dust to collapse under its own gravitational force.

4 0

3 years ago

A block of mass 12.2 kg is sliding at an initial velocity of 6.65 m/s in the positive x-direction. The surface has a coefficient

valentina_108 [34]

Explanation:

Given that,

Mass of the block, m = 12.2 kg

Initial velocity of the block, u = 6.65 m/s

The coefficient of kinetic friction, $\mu_k=0.253$

(a)The force of kinetic friction is given by :

$f=\mu_k mg$

mg is the normal force

So,

$f=0.253\times 12.2\times 9.8\\\\f=30.24\ N$

(b) Net force acting on the block in the horizontal direction,

f = ma

a is the acceleration of the block

$a=\dfrac{f}{m}\\\\a=\dfrac{30.24}{12.2}\\\\a=2.47\ m/s^2$

(c) Let d is the distance covered by the block before coming to the rest. Using third equation of motion as follows :

$v^2-u^2=2ad\\\\d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{-(6.65)^2}{2\times 2.47}\\\\d=-8.95\ m$

Hence, this is the required solution.

3 0

3 years ago

A molecule moves down its concentration gradient using a transport protein in the plasma membrane. This is an example of

nydimaria [60]

Since they move down their concentration gradient through a transport protein, they can release energy as a result of chemiosmosis. One example is GLUT1 which moves glucose down its concentration gradient into the cell.

4 0

3 years ago

A car and a motorcycle leave at noon from the same location, heading in the same direction. The average speed of the car is 30 m

jonny [76]

Answer:

Speed of motorcycle is 40 mph and speed of car is 50 mph

Explanation:

Let the peed f the motorcycle is v m /sec

According to question speed of motorcycle = 2v-30 mph

Now it is given that in two hours car is 20 miles ahead from motorcycle

Distance traveled by motorcycle in 2 hour = 2v

And distance traveled by car in two hour = 2×(2v-30)

Now according to question

$2(2v-30)=2v+20$

4v-60 = 2v+20

2v = 80

v = 40 mph

So speed of motorcycle is 40 mph

And speed of car = 2v-30 = 2×40-30 = 50 mph

6 0

3 years ago

Question: Why do both the moon and the earth pull on the spaceship the entire time? Why must you be closer to the moon before th

Ira Lisetskai [31]

-- There's no limit to the distance of gravitational forces.
There's gravitational force between Pluto and the lint in your
pocket ... not much, but it's there, and it can be calculated.

So there's ALWAYS gravitational force between the Earth and the
spaceship, AND ALSO between the Moon and the spaceship.
Even before it's ever launched !

-- The Earth has about 80 times as much mass as the Moon has,
so you have to be much closer to the Moon before the gravitational
forces in each direction are equal.

8 0

3 years ago