Answer:
Frequency heard by the police is 1336 Hz
Explanation:
As we know that the speed of sound in air is given as
now we know that
t = 35 degree C
so we have
now we know that if source and observer moves relative to each other then the observed frequency by the observer is given as
Answer:
Active transport requires energy in order to move molecules <u>against</u> the concentration gradient while simple and facilitated diffusion require no energy to move molecules <u>down</u> the concentration gradient.
Explanation:
Active transport requires energy as the substance move from low concentration to high concentration (<u>substances move against concentration gradient</u>).
For example, Sodium-potassium pump.
Passive transport does not require energy as the substance move from high concentration to low concentration (<u>substances move only down their concentration gradient</u>).
It is of two types: Simple and facilitated transport.
For example, Osmosis.
C
Because magnet involves 2 opposite poles so therefore it would have to be C
Answer:
Explanation:
Given the initial velocity of the clown, his mass and final height we can calculate the final kinetic energy using the <em><u>conservation of total mechanical energy</u></em>
Since