SO! I'VE GOT A COUPLE QUESTIONS RELATING TO SCIENCE (WHERE ARE MY SCIENCE WHIZZES?) TRUST ME THERE WILL BE MORE
2 answers:
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The question is incomplete. Here is the complete question.
The image below was taken with a camera that can shoot anywhere between one and two frames per second. A continuous series of photos was combined for this image, so the cars you see are in fact the same car, but photographed at differene times.
Let's assume that the camera was able to deliver 1.3 frames per second for this photo, and that the car has a length of approximately 5.3 meters. Using this information and the photo itself, approximately how fast did the car drive?
Answer: v = 6.5 m/s
Explanation: The question asks for velocity of the car. Velocity is given by:
The camera took 7 pictures of the car and knowing its length is 5.3, the car's displacement was:
Δx = 7(5.3)
Δx = 37.1 m
The camera delivers 1.3 frames per second and it was taken 7 photos, so time the car drove was:
1.3 frames = 1 s
7 frames = Δt
Δt = 5.4 s
Then, the car was driving:
v = 6.87 m/s
The car drove at, approximately, a velocity of 6.87 m/s
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
b
c
Explanation:
From the question we are told that
From the question we are told to find when t=0 equals the time constant (
)
That is to obtain .This is mathematically represented as
Substituting 12 V for and 150Ω for R
From the question we are told to find when t=0 equals the 3 times the time constant (
)
That is to obtain .This is mathematically represented as
As tends to infinity
So would be mathematically evaluated as
