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:
which is necessary to keep the building warm. Light colors reflect the light hence they are wisely used in tropical ...
Here in the US, not all houses are painted dark colors. In years past, it was common for the ...
The correct answer is C) the focus
Answer:
Height of the tree is <u>9.6 cm</u>
Explanation:
We know that, Magnification of an image is written as follows.

Where,

As per given question,

Substitute the values in the above formula,

Height of the tree is 9.6 cm.
Answer:
230.53°
Explanation:
α = angle in rad / t^2
t =2mins = 2 × 60 = 120sec.
α = angle in rad / 2^2
α = angle in rad / 16
15+4(2) = angle in rad /4
23 = angle/4
23× 4 = angle in radian
92 = angle in radian
But π rad = 180°
1 rad = 180 /π
Therefore
92 rad = 92 ×180/π = 5270.53°
This value is far more so we subtract from 360° continuously till we get a value less than 360°
5270.53- (360×14) =5270.53- 5040
230.53°