Explanation:
The sun's gravitational force is very strong. If it were not, a planet would move in a straight line out into space. The sun's gravity pulls the planet toward the sun, which changes the straight line of direction into a curve. This keeps the planet moving in an orbit around the sun
Q = mc(T2-T1)
so if T2-T1 is POSITIVE which means, theres an increase in Temp.
then
Q = positive
<span>C. It must be positive</span>
Answer:
Explanation:
Given data
Diameter D=0.50 mm
Wavelength λ=500 nm
Length L=2.0 m
To find
Width w
Solution
Circular aperture of diameter D will have bright central maximum of diameter:
w=(2.44λL)/D
This is a question volumetric flow rate.
In 1 second, water rises with 0.4 in.
Additionally,
Volume filled in 1 second = A*0.4, A = surface area of the circular cylinder.
Where,
A = πR^2 = π*3^2 = 9π in^2
Therefore,
Volumetric flow rate = 9π*0.4 = 11.31 in^3/s
In terms of liters/s,
1 in^3 = 0.0163871 litres
Then,
11.31 in^3/s = 11.31*0.0163871 ≈ 0.19 l/s
Do it in order of the steps, then the ones that are not in the process do the definition and draw a picture. For the steps also draw pictures!