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2 years ago

12

If the radius of the atom is the distance from point A to D, where is the MOST likely location of the LEAST concentration of mas

s?
A)
A

B)
B

C)
C

D)
D

1 answer:

marshall27 [118]2 years ago

4 0

Answer:

i think b

Explanation:

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Electron can only lose energy by transition from one allowed orbit to another ______ electromagnetic radiation

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this problem occurs in petroleum firefighting when fire streams are applied to the burning liquid surface at such an angle that

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Petroleum has less density than water. So, when fire streams are applied to the burning liquid surface at such an angle that hot and / or burning oil is forced over the edge of the tank, the oil then flows down the side of the tank and you are now confronted with a fire on the ground as well as the one in the tank.

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When you spray water on a regular fire, you're attempting to lower the flame's temperature and contain the fire.

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10 months ago

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3 years ago

How does the kinetic energy of an object relate to its mass and velocity?

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3 years ago

A hovering mosquito is hit by a raindrop that is 50 times as massive and falling at 8.4 m/s, a typical raindrop speed. How fast

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The final velocity after the collision is 8.2 m/s

Explanation:

We can solve this problem by using the law of conservation of momentum: in fact, if we consider the system to be isolated (=no external unbalanced forces), the total momentum of the raindrop+mosquito must be conserved before and after the collision.

If the collision is perfectly inelastic, moreover, the raindrop and the mosquito stick together and travel at the same velocity v after the collision.

Mathematically:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v$

where:

$m_1$ is the mass of the first mosquito

$u_1 = 0$ is the initial velocity of the mosquito

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$u_2 = 8.4 m/s$ is the initial velocity of the raindrop

$v$ is the final combined velocity of the raindrop+mosquito

Re-arranging the equation and substituting, we find:

$m_1 u_1 + 50 m_1 u_2 = (m_1 + 50 m_1) v\\50 m_1 u_2 = 51 m_1 v\\50 u_2 = 51 v\\v=\frac{50}{51}u_2 = \frac{50}{51}(8.4)=8.2 m/s$

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3 years ago