Answer:
4.29 millimeters
Explanation:
Bats emit ultrasound waves: in air, ultrasound waves travel at a speed of

The frequency of the waves emitted by this bat is:

Therefore we can find the wavelength of the wave emitted by the bat by using the relationship between speed, frequency and wavelength:

Answer - There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.
45km/h * 0.5h= 22.5km
The car can travel 22.5km in 0.5 hours
Answer:
horizontal component = 10.54m/s
Explanation:
horizontal component = 13.2cos37°
horizontal component = 10.54m/s
The first one:
Like poles repel each other and opposite poles attract each other