Answer:
The greater wax moth developed the ability to hear frequencies up to 300kHz to trick bats, their chief predators.
Explanation:
Dogs commonly listen to frequencies of about 30 kHz. But nothing matches the moths 300-kHz maximum. Since there aren't any noises in an environment that get close, scientists hypothesize that greater wax moths developed super sensitive hearings to trick bats, their chief predators. it can hear wavelengths up to 300 kHz, well exceeding the range of any other creature and higher than any bat can sound.
Answer:any speed greater than 4.22 m/s
Explanation:
Given
Length of substation =24.5 m
speed of escalator =2 m/s
Time to cross the escalator is 11 s
let v be the speed of boy
Therefore minimum speed to match the record time is
24.5=(v-2)11
v-2=2.22
v=4.22 m/s
Therefore a speed greater than 4.22 m/s is required to beat the record
We have to convert Gm/s to m/s.
As
Therefore the speed of light in vacuum,
Thus, the speed of light in m/s is
Answer:
The output power is 24.68 mW.
Explanation:
Given that,
Power = 110 mW
Range = 38 m
Reduced range = 18 m
We need to calculate the power
Using formula of intensity
As intensity is constant
So,
Put the value into the formula
Hence, The output power is 24.68 mW.
Answer:
read this it might help some
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Explanation: