What speed would a fly with a mass of 0.638 g need in order to have 74354.5 j of kinetic energy

v = 15,267 m/s

Explanation:

Kinetic Energy

Is the type of energy of an object due to its state of motion. It's proportional to the square of the speed.

The formula to calculate the kinetic energy is:

Where:

m = mass

v = speed

The kinetic energy is often expressed in Joules (J)

We are given the mass of a fly m=0.638 g and we need to calculate its speed in order to have a kinetic energy of 74354.5 J.

Converting:

m=0.638 g /1000 = 0.000638 kg

To find the speed, we solve the formula for v:

Substituting:

v = 15,267 m/s

(The fly should move faster than a rocket)

t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanatio

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.