Answer:
Upper cuticle and guard cells
Answer: frequency =v/π= 3×10^8/6.9 ×10^-13=5×10^20
Explanation:) the relationship between the velocity and frequency of a wave is V=fπ ,where V=velocity of wave while the π or lander represents wavelength which was given in the question.f represents frequency of wave.velocity of waves differs,e.g sound waves has a velocity of 330m/s while electromagentic spectrum waves eg UV,infrared has a constant velocity called velocity of light =3×10^8.the question did not clarify the type of wave so I assumed it should be light. Which has a V= 3×10^8.so frequency was calculate d using velocity divided by wavelength (which. Was given).
Answer:
Option C = Time
Explanation:
Speed:
''It is the distance travel in per unit time". It tells the capacity of moving object how fast it is moving. It is scalar quantity and can be explain just in term of magnitude. It does not require direction. For example we can say that someone is moving fast or moving slow. We are telling the magnitude of speed either its high or slow. If the object is not moving then its speed will be zero.
Formula:
r = d / t
r = speed (it can also be represented by v)
t = time taken to cover the distance
d = distance
Unit:
The system international unit of speed is m/s. It can also be given in Km/h
Example:
A car cover the 300 Km distance in a four hour. what is the speed of car?
Given data:
Distance = 300 km
Time = 4 hr
speed = ?
v = d / t
v = 300 km / 4 hr
v = 75 km/ hr
The speed of car is 75 km/hr.