Answer:
wavelength is 666.6933 × m
Explanation:
given data
Two slits separated d = 0.425 mm
screen away D = 3.13 m
tenth bright line (y) = 49.1 mm
to find out
The wavelength of the light
solution
let angle θ at which bright fringed occurs
so that
tanθ = y / D
here D id slits to screen distance and tanθ = θ
and
construction interference equation
sinθ = m β / d
and here sinθ = θ and β is wavelength
θ = m β / d
and
θ = m β / d
y / D = m β / d
β = y d / Dm
wavelength = 49.1 × 0.425 / 3.13 (10)
wavelength = 49.1 × 0.425 / 3.13 (10)
wavelength is 666.6933 × m
Answer:
The mass of the object is approximately 70.79 kilograms
Explanation:
We use Newton's second law to solve this problem. This law states that the net force on an object equals the product of its mass times the acceleration:
Therefore, for this case, since the net force on the object and its acceleration are given, we can use the equation above to solve for the unknown mass:
1,000 W = 1 kW
100 W = 0.1 kW
(0.1 kW) x (6 h) = 0.6 kWh <=== energy
(0.6 kWh) x (£0.1359/kWh) = £0.0815 <=== cost of it
Answer:
Average speed = 10,000 m/s
Explanation:
Given the following data;
Distance = 2m
Time = 0.0002secs
To find the average speed;
Average speed = distance/time
Average speed = 2/0.0002
Average speed = 10,000 m/s
Therefore, the average speed of the
electron is 10,000 meters per seconds.
1) d = V*t >>>as you double the av. speed the distance become doubled.
2) after you draw the victors you will find the total displacement = 1 meter to the left.
3) V =d/t =( 8km)/(1.25hr) = 6.4km/hr