The factors that relate to a streams ability to erode materials are discharge, load, and gradient.
Answer:
Average acceleration is- 4.5
Given:
= 45 m/s
= 0 m/s
t = 10 s
To find:
Average acceleration = ?
Formula used:
Average acceleration =
Solution:
Average acceleration is given by,
a = =
a =
a = - 4.5
Thus average acceleration is - 4.5 . Negative sign shows that it is deceleration.
Answer:
14.68m/s
Explanation:
As per the question, the data provided is as follows
Mass = M = 0.148 kg
Height = h = 11 m
Initial velocity = U = 0 m/s
Final velocity = V
Gravitational force = F
Mass = M
Based on the above information, the speed that hit to the ground is
As we know that
Work to be done = Change in kinetic energy
= 14.68m/s
Answer:
Frequency =3.5×10^14hertz
Wavelength = 8.6×20^-7m
Explanation:
Energy of photon is expressed as;
E = hf where;
h is the Planck constant
f is the frequency of the photons
From the formula f = E/h
Given E = 2.32 × 10^ − 19 J
h = 6.63×10^-34Js
f = 2.32×10^-19/6.63×10^-34
f = 0.35×10^(-19+34)
f = 0.35 × 10^15
f = 3.5×10^14hertz
To get the wavelength, we will use the relationship:
f = c/λ
λ = c/f
Given c = 3×10^8m/s
f = 3.5×10^14hertz
λ = 3×10^8/3.5×10^14
λ = 0.86×10^-6m
λ = 8.6×20^-7m
Answer:
i. 0.34
ii. 0.4
iii. 1700 w/m²
iv. 2211.36 w/m²
Explanation:
Given that
Irradiation of the plate, G = 2500 w/m²
Reflected rays, p = 500 w/m²
Emissive power, E = 1200 w/m²
See attachment for calculations