Answer:
The speed of a turtle is 4m/s
Explanation:
speed = distance/time
distance = 100m
time = 25s
s = 100/25
= 4m/s
1. It’s true
4 ,7 ,8 is correct
Answer:
Explanation:
P = Power = 50 kW
n = Number of photons per second
h = Planck's constant =
= Frequency = 781 kHz
r = Distance at which the photon intensity is i = 1 photon/m²
Power is given by
Photon intensity is given by
The distance is