<span>Of the following gasses, CH4 will have the greatest rate of effusion at a given temperature.</span>
<h2>
Answer: 1.252</h2>
Explanation:
We are given this equation and we need to find the value of :
(1)
Firstly, we have to clear :
(2)
Applying<u> Natural Logarithm</u> on both sides of the equation (2):
(3)
(4)
According to the Natural Logarithm rules , so (4) can be written as:
(5)
Finally:
Answer:
Linear and rotational Kinetic Energy + Gravitational potential energy
Explanation:
The ball rolls off a tall roof and starts falling.
Let us first consider the potential energy or more specifically gravitational potential energy (; = mass of the ball, = acceleration due to gravity, = height of the roof). This energy comes because someone or something had to do work to take the ball to the top of the roof against the force of gravity. The potential energy is naturally maximum at the top and minimum when the ball finally reaches the ground.
Now, the ball starts to roll and falls off the roof. It shall continue rotating because of inertia (Newton's first law). This contributes to the rotational kinetic energy (; =moment of inertia of the ball & = angular velocity).
Finally comes the linear kinetic energy or simply, kinetic energy () which is caused due to the velocity of the ball.
Answer: Friction is an important thing in life and we use it to move things or friction is used on us.
Explanation: Friction happens when you rub against something or when someone or something rubs against you.
In hotter temperatures, The speed of sound would move slower, since the air particles(The medium for sound to travel) would be more spread out in lower air pressure, for colder temperatures, the particiles are more compact, allowing sound to go farther, faster.