The correct answer is A. Lumen
This is the so called energy of light measurement. Other mentioned measurements are used for different things such as measuring light over an area of space or similar.
Because it records speed of the car at a certain time, the independent variable should be time and dependent would be speed or velocity. Since it's taken every second, it would be considered instantaneous velocity, which is D.
Answer:
29 m
Explanation:
given,
speed of the car = 73 Km/hr
= 73 x 0.278 m/s = 20.3 m/s
Time elapses before the motorcycle is moving as fast as the car
using equation of motion
v = u + at
initial speed = 0 m/s
20.3= 0 + 7 x t
t = 2.9 s
b) distance traveled by the car in that time
d = s x t
d = 20.3 x 2.9 = 58.87 m
distance traveled by the police
s = 29.435 m
distance car is ahead = 58.57 - 29.44 = 29.13
= 29 m
I believe the answer is resonance
The circumference of the circle after t seconds = 25.12 t
Given data,
The radius of each circular wave will increase by four centimeters per second (cm/s)
In 1 second of circular wave radius = 4cm
In 1*t second of circular wave radius = 4t cm
As a result, the radius of the circular wave after t seconds is 4t cm.
We already know that the circumference of a circle is given by = 2πr, where r is the circle's radius.
As a result, the radius of a circular wave after t seconds is = 2π * radius of a circular wave after t seconds = 2π * 4t
= 8πt
( Taking π = 3.14 )
As a result, the circumference of the circle after t seconds = 8πt
= 3.14t
= 25.12t
Find more on circumference at : brainly.in/question/49774764
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