Suppose you wanted to do an experiment to find out if changing the length of a pendulum changed the amount of time it takes the pendulum to swing back and forth. Which pendulums from the above diagram would you use for the experiment?a.1 and 4
b.2 and 4
c.1 and 3
d.2 and 5
e.all
Answers
want to use #1 and #3 for an experiment with meaningful results.
Why ?
Thinking clearly, you'd look at a swinging pendulum, and realize that
there are only two things about it that might affect its period:
==> its length, and ==> the weight on the end of it.
Since this first experiment focuses on the length, you want to keep
everything else constant. So you'd want to compare pendulums
with different lengths but the same weight.
Later on, you'll do the other experiment. You'll compare pendulums
with the same length but different weights.
Assuming that W = weight.
Weight has to be equal so that you can concentrate on time change because of varying length.
If you change weight as well, the experiment would not be very accurate and would result in a failure.
So, the right answer is C. 1 and 3.
Hope this helped!
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Answer:
the corect answer it b and c
Explanation:
b. the density of lines shows the strength of the force.
c. the arrows on the lines of force show which way a posative object will move.
youre welcome
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Answer:
Explanation:
velocity=distance/time
velocity=x
distance=45.8 meters
time=2.2 minutes
x=45.8/2.2
x=0.34 m/s
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B. casual, third-person, entertaining writing.
C. thoughtful, analytical, academic writing.
D. bullet-pointed, technical, factual writing.
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IN SUMMMMMMERRRRRRR
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Answer:
X- rays, gamma rays.
Explanation:
Ionizing radiations are used to kill microorganisms. These radiations include x-rays, gamma rays and high energy electron beam. These radiations are passed into the cell. As a result, the cell component and the molecular structure gets damaged. These rays are used to kill microorganisms because they penetrate more than other rays.