We have no idea. There are probably many things involved ... the planet's mass,
the availability of small bodies in the neighborhood that can be captured, etc.
Answer:
Transverse wave- Back and forth at right angles to the direction of the wave arrow.
longitudinal wave- bask and forth in the direction of the motion of the motion of the wave.
electromagnetic wave- two alternating waves moving at right angles to each other.
Explanation:
In a longitudinal wave, the particles vibrate at right angles in reference to the wave motion.
In a transverse wave, the particles vibrate parallel to the wave motion
Electromagnetic waves occur as a result of the interaction between two waves and are normally transverse in nature.
D, it provides greater accuracy for measuring stars far from the earth.
Answer:
The number of photons per second are 
.
Explanation:
Given that,
Wavelength = 650 nm
Power = 45 W
Distance R= 17 m
Diameter = 5.0 mm
We need to calculate the number of photon per second emitted by light bulb
Using formula of energy
The power is
Put the value of E
Put the value into the formula
We need to calculate the surface area
Using formula of area
We need to calculate the number of photons entering into eye
Hence, The number of photons per second are .
