As the motion of the source of sound is moving,the percieved sound frequency varies .this is known as Doppler effect.the sound waves emited by the sources tends to bunch up in front of the source and spread out behind the source.

Since the falcon is moving towards the sound,the frequency increases and so does the pitch of the sound

8 0

4 years ago

If a 10mL object has a density of 1.5g/mL, what would its mass be (in g)?

kakasveta [241]

Answer:

15 g

Explanation:

The density of an object can be found using the following formula:

$d=\frac{m}{v}$

We want to find the mass, so we must rearrange the formula for $m$ . Multiply both sides of the formula by $v$ .

$d*v=\frac{m}{v}*v$

$d*v=m$

The mass can be found by multiplying the density and volume.

The density of the object is 1.5 g/mL and the volume is 10 mL.

$d=1.5 g/mL \\v=10 mL$

Substitute the values into the formula.

$m=d*v$

$m=1.5 g/mL * 10 mL$

Multiply. When multiplying, the milliliters, or mL will cancel out.

$m= 1.5 g*10$

$m=15 g$

The mass of the object is 15 grams.

6 0

4 years ago

10. the difference in the concentration of a substance across a space

vampirchik [111]

Answer:

C. Concentration gradient

8 0

2 years ago

PLEASE HELP, WILL MARK BRAINLEST TO WHO EVER ANSWERS FIRST

lidiya [134]

Answer:

Original Horizontality Principle is the Relative Chronology Principle which states that sediments are always deposited in horizontal layers. Any geological phenomenon that changes the horizontality is always after sedimentation.

Explanation:

8 0

3 years ago