Paracrine signaling .. Hope this helps :)
Mark Brainliest..
The formula for calculating velocity of wave is expressed as
v = fλ
where
v = velocity of the wave
λ = wavelength
f = frequency of the wave
From the information given,
v = 340
f = 502
Substituting these values into the formula, we have
340 = 502λ
Dividing both sides of the equation by 502,
340/502 = 502λ/502
λ = 0.68 m
The wavelength is 0.68 m
Had to look for the options and here is my answer.
Based on the listed choices, the one that is considered as a disadvantage of radio telescopes over optical telescopes is that "t<span>hey have greater resolution for similar size collectors." Hope this answers your question.</span>
Explanation:
string roller is called an example of wheel and axel because The thin rod which needs to be turned is called the axle and the wider object fixed to the axle, on which we apply force is called the wheel.
hence the we apply force on the roller and the string gets tight.
Since the track is friction less, block’s kinetic energy at the bottom of the track is equal to its potential energy at the top of the track.
PE = 81 * 9.8 * 3.8 = 3016.44 J
Work = 1/2 * 1888 * d^2
PE = Kinetic energy at the base.
1/2 * 1888 * d^2 = 3016.44
d = 1.78 approx 1.8
F = Ke = 1888 * 1.8 = 3398.4N
