Answer:
Explanation:
1 ) the volume of helium in the balloon when fully inflated
= 4/3 π R³
= 4/3 x 3.14 x 5.3³
= 623.3 m³
2 ) force of gravity on the entire system ,but with no people
= (mass of the empty balloon and basket + mass of helium )x g
=( 129 + 623.3 x.18 )x 9.8
= 2363.7 N
3 ) magnitude of the buoyant force on the entire system (but with no people )
( Volume of empty balloon + basket + volume of helium ) density of air x g
( 0.057 + 623.3 ) x 1.23 x 9.8
= 7513.94 N
4 ) magnitude of the force of gravity on each person
Mass of each person x g
= 71 x 9.8
= 695.8 N
B acid + base → water + salt
Explanation:
The best equation that represents a neutralization reaction is:
acid + base → water + salt
In a neutralization reaction, an acid reacts with a base to produce salt and water only.
Here, hydrogen combines with hydroxide to form water.
Titration is usually used to carry out this reaction in the laboratory.
An indicator is added to the base and at end the color of the reaction changes.
At this point the acids have completely been neutralized with the base.
Learn more:
Neutralization brainly.com/question/4455839
#learnwithBrainly
<u><em>heyaaaaa</em></u>
<u><em>Momentum before Pb = momentum after Pa</em></u>
Pb = 75*6 - 100*8 = -350kgm/s = Pa = (75+100)V where V is the velocity of the combined mass of the two players after the collision.
<u><em>Velocity has magnitude (speed) and direction. V = -350/175 = -2m/s </em></u>
So the two players are moving at 2m/s in the direction the 100kg player was moving before the collision.
<em><u>I arbitrarily chose the direction of the smaller player as positive so the opposite direction (of the larger player) had to be negative. </u></em>
hope it helpssss!!!!!!
The change of state that is occurring is from the liquid state to the solid state.
Answer:
Scientific Notation: 3.45 x 10^5
E Notation: 3.45e5
