The answer is A.
When a substance is a gas, it fills its container no matter how many particles it's made of, however the number of particles present will directly affect the pressure and temperature of the system.
Answer:
Explanation:
For this case we know that the speed of the sound is given by:
And we have the following info provided:
represent the car leading
represent the car behind with the source
is the frequency for the observer
And we can find the frequency of the source with the following formula:
And replacing we got:
So then the frequency for the source would be the same since the both objects are travelling at the same speed.
Answer:
Define the term care lables
Explanation:
Is a permanent label or tag,containing regular care information and instructions
Answer:
The free fall acceleration on the surface of this planet is 4.35 m/s²
Explanation:
Given that,
Mass of planet
Radius of planet
We need to calculate the free fall acceleration on the surface of this planet
Using formula of gravity
Where, = mass of planet
= radius of plane
Put the value into the formula
Hence, The free fall acceleration on the surface of this planet is 4.35 m/s²
<em>projectile can only follow the straight line path when it is launched upward straightly so the correct option is <u>90 degree with respect to horizontal x -axis ..:)</u></em>