Answer:
frequency = 1475.45 Hz
Explanation:
given data
frequency f1 = 1215 Hz,
frequency f2 = 1265 Hz
police car moving vp = 25.0 m/s
solution
speed of sound u = 343 m / s
speed of the other car = v
when the police car is stationary
the frequency the other car receives is
f2 = f1 × 
................1
and
the frequency the police car receives is
f2 = f1 × 
..................2
now from equation 1 and 2
v = 4.77 m/s
and
frequency the other car receives is
f2 = f1 × 
......................3
and
the frequency the police car receives is
f2 = f1 × 
.......................4
now we get
f2 = f1 × 
f2 = 
f2 = 1475.45 Hz
Answer:
by making observation hope it's helpful
Answer:
Leave onions in cold water for about 15 minutes! Takes out the chemical reaction in the onion's defense system.
Explanation:
This is what people NEED to know for cooking... Lol :)
A Beam balance (or Beam scale) is a device to measure weight or mass. These are also known as mass scales, weight scales, mass balances, weight balances, or simply scales, balances, or balance scales. You can also use a graduated cylinder and determine the water displaced and figure out the mass of an object this way!
- if this answer is what you were looking for, don’t forget to heart and maybe if you really liked it brainliest :)
Well, there would have to major supports on every building that was tall even though we have very strong foundation the foundation doesn't do anything except no give us dirt as a floor.but a really strong structure to use is a triangle formation.
Hope this helped
