A star's life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star's mass is determined by the amount of matter that is available…so initial mass I think
Answer:
I think it is A
Explanation:
Below, what belongs to the organs of the circulatory system in humans is...
<em>a. heart - kidneys - lungs</em>
b. heart-blood vessels - blood
c. heart - kidney - liver
d. heart - lungs
when water in a metal pot is heated over a campfire. Primarily, by means of convection energy transfer is thermal energy moved from the fire to the bottom of the pot
<h3 /><h3>What is thermal energy?</h3>
It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
Thermal energy can flow by different means such as conduction, convection, and radiation.
As given in the problem when water in a metal pot is heated over a campfire. The energy we receive around the campfire is mostly due to the effect of the radiation of the heat but the Primary means of energy transfer is thermal energy moved from the fire to the bottom of the pot because of the convection.
Thus, when water is heated in a metal pot over a campfire. Thermal energy is primarily transferred from the fire to the bottom of the pot through convection.
Learn more about thermal energy from here
brainly.com/question/3022807
#SPJ1
Answer:
a. 2.959kgm/s
b. 7.63kgm/s
Explanation:
We were given Mass= 0.25kg
Velocity = 13m/s
Angle = 46°
a) Along the x axis we have =
0- 0.25(13)cos(46°) = (- 2.26)i kgm/s
Along the y axis we have =
-0.25(20) +0.25(13)sin(46°) = (-1.91)j kgm/s
Magnitude of change in momentum
=√ i²+ j²
= √ (-2.26)²+ ( -1.91)²
= √8.7557
= 2.959 kgm/s
b.
Along the x axis
-0.25(20) - 0.25(13)cos(46°) = (-7.26)i kgm/s
Along the y axis
0 + 0.25(13)sin(46°) = (-2.34)j kgm/s
Magnitude of change in momentum
= √ i²+ j²
= √( -7.26)² + (-2.34)²
= √58.1832
= 7.63kgm/s
