When a star is in the main-sequence stage of its life, it is fusing __________ into _______

An increase in temperature the kinetic energy and average speed of the gas particles. As a result, the pressure on the walls of

Cerrena [4.2K]

Answer:

a

The pressure will increase

b

$T_2 = 576^oC$

Explanation:

From the ideal gas law we have that

$PV = nRT$

We see that the temperature varies directly with the pressure so if there is an increase in temperature that pressure will increase

The initial temperature is $T_i = 10^oC = 10 + 273 = 283 \ K$

The objective of this solution is to obtain the temperature of the gas where the pressure is tripled

Now from the above equation given that nR and V are constant we have that

$\frac{P}{T} = constant$

=> $\frac{P_1}{T_1} =\frac{P_2}{T_2}$

Let assume the initial pressure is $P_1 = 1 Pa$

So tripling it will result to the pressure being $P_2 = 3 Pa$

So

$\frac{1}{283} =\frac{3}{T_2}$

=> $T_2 = 3 * 283$

=> $T_2 = 849 \ K$

Converting back to $^oC$

$T_2 = 849 - 273$

=> $T_2 = 576^oC$

8 0

2 years ago

In the process of making a rainbow, light enters the water droplet at location 1 and exits at location 3. Which

elena-s [515]

Answer: D, Refraction, Reflection, Refraction.

Explanation: Refraction is a rainbow. See image for info.

6 0

2 years ago

A 25 kg child runs at a speed of 5.0 m/s and jumps onto a stationary shopping cart and holds on for dear life. The cart has mass

makkiz [27]

Answer:

3.38 m/s

Explanation:

Mass of child = m₁ = 25

Initial speed of child = u₁ = 5 m/s

Initial speed of cart = u₂ = 0 m/s

Mass of cart = m₂ = 12 kg

Velocity of cart with child on top = v

This is a case of perfectly inelastic collision

$m_1u_1+m_2u_2=(m_1+m_2)v\\\Rightarrow v=\frac{m_1u_1+m_2u_2}{m_1+m_2}\\\Rightarrow v=\frac{25\times 5+12\times 0}{25+12}\\\Rightarrow v=\frac{125}{37}\\\Rightarrow v=3.38\ m/s$

Velocity of cart with child on top is 3.38 m/s

7 0

2 years ago

A string attached to an airborne kite was maintained at an angle of 40.0 with the ground. if 120m of string was reeled in to ret

AleksAgata [21]

The hypotenuse is measured at 120 meters of string, and you need to solve for the leg of the triangle that is horizontal. The degree is 40, so use trigonometry to figure it out.
Cosin (40) is equal to around .766
Adjacent/Hypotenuse
x/120 = cos40
Answer: 91.92533.
If you use 3 significant figures it should be 91.9 meters.

5 0

3 years ago

True or false. A convection current is the circular motion of a fluid caused by the rising of heated fluid

xz_007 [3.2K]

True that is what a convection current is

7 0

2 years ago

When a star is in the main-sequence stage of its life, it is fusing __________ into ________

When a star is in the main-sequence stage of its life, it is fusing __ into