How will you demonstrate Newton's 1st Law of Motion at home? Brainstorm 2 or 3 possible demonstrations

What is the answer to this equation? M¹u¹ + M²u² = M¹V¹ + M¹V²

Rudik [331]

Answer:

m²=m¹

Explanation:

m¹v¹ + m²v² = m¹ v¹+m¹v²

m²v²= m¹v²

m²v²/v² = m¹

m² = m¹

3 0

2 years ago

Measurements show that the enthalpy of a mixture of gaseous reactants decreases by during a certain chemical reaction, which is

snow_tiger [21]

The given question is incomplete. The complete question is as follows.

Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 338 kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that 187 kJ of work is done on the mixture during the reaction. Calculate the change in energy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. Is the reaction exothermic or endothermic ?

Explanation:

The given data is as follows.

Change in enthalpy ( $\Delta H$ ) = -338 kJ (as it is a decrease)

Work done = 187 kJ,

Change in energy ( $\Delta E$ ) = ?

Now, according to the first law of thermodynamics the formula is as follows.

$\Delta H = \Delta E + P \Delta V$

Hence, putting the given values into the above formula as follows.

$\Delta H = \Delta E + P \Delta V$

Also, we know that W = $P \Delta V$

so, $\Delta H = \Delta E + W$

$-338 kJ = \Delta E + 187$

$\Delta E$ = -151 kJ

Thus, we can conclude that the change in energy of the gas mixture during the reaction is -151 kJ.

5 0

3 years ago

* WILL GIVE BRAINLIEST TO CORRECT ANSWER *

stepan [7]

I would say food but like they take weight too

3 0

3 years ago

Which statement best describes perigee?

Alex17521 [72]

Whenever you see "-gee" in the description of a point in an orbit,
you know it's talking about an orbit of the Earth. You see the same
piece of a word in "geology" and "geography". "Geometry" began
as the study of measuring places on the Earth, so that you and your
neighbor could agree on where your field ends and his begins, and
if you wanted to buy part of his field from him, the two of you could
go outside, do some measurements, and agree on what area you're
paying him for.

"Perigee" and "apogee" are the points in the orbit of the Moon, or a
TV satellite, or the International Space Station, where the orbiting body
is nearest or farthest from the Earth. "Perigee" is the lowest/nearest point.
"Apogee" is the highest/farthest point.

If the description has "-helion" in it instead of "-gee", then it's talking about
an orbit around the sun, like points in the Earth's orbit. The "-helion" comes
from the Greek word "Helios" for the Sun.
Earth is at perihelion during the first few days of January, and at aphelion
during the first few days of July. (That's right ... nearest to the sun in January,
and farthest from the sun in July.)

6 0

3 years ago

Which of the following statements is true about hydrothermal vents?

irina [24]

A because its about an opening in the sea floor and tectonic plates are the only thing.

7 0

3 years ago

Read 2 more answers