What is the minimum total energy released when an electron and its antiparticle (positron) <span>annihilate each other?
The </span>minimum total energy released when an electron and its antiparticle (positron) annihilate each other is <span>2.73 × 10^–22 J. The answer is number 4.</span>
Answer:
The correct answer is C
Explanation:
Change is momentum can be described as the change in the product of mass and velocity of a body. Every moving object as a momentum and the higher the momentum of this object, the harder it is to stop. Impulse (a force), which is sometimes used to describe change in momentum can be described as the product as force multiplied by time.
From the description above, it can be deduced that an increase in impulse can lead to a greater change in momentum. And an increase in impulse can be brought about by an increase in the time it takes a body to be brought to rest after collision. And since the car that hit the water barrels was brought to rest at a longer time, it has a greater change in momentum
Answer: 5.34 MJ
Explanation: The window is a rectangle with area:
A = 1.1(1.5)
A = 1.65 m²
We know that only 0.9 kW/m² reaches Earth so:
P = 
P = 1.485 x 10³ W
Watts is an unit of Power and it can also be written as J/s.
An hour has 3600s or 3.6 x 10³s, so:
E = 1.485 x 10³ 
(3.6 x 10³s)
E = 5.346 x 10⁶ J
Mega is equal to 10⁶, then:
E = 5.35 MJ
A 1.1 m by 1.5 m window collects, during 1 hour of daylight, 5.35 MJ
