The uncertainty in a measured value is the possible variation in a measured value arising due to inaccuracies in the instrument being used. In the case described, the beats are 127 per minute, and the uncertainty is +/-4 beats. This means that the beats may actually be between 123 and 131.
The fractional uncertainty is: 4/127 = 0.031
And the percentage uncertainty is: 4/127 * 100 = 3.1%
The initial speed at which you threw the first three rocks is 13 m/s.
<h3>What is horizontal component of velocity?</h3>
The horizontal velocity component (vx) describes the influence of the velocity in displacing the projectile horizontally.
The horizontal component of velocity remains constant as their is no force in the horizontal direction.
The initial speed at which you threw the first three rocks is calculated as follows;
v(xi) = v(xf)
where;
- v(xi) is initial horizontal speed
- v(xf) is the final horizontal speed
v(xf) = 13 m/s = v(xi)
Thus, the initial speed at which you threw the first three rocks is 13 m/s.
Learn more about horizontal speed here: brainly.com/question/24949996
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Newton's First Law states that when an object is not in motion, it will stay motionless until a force is acted upon it. In this case, you are not moving, so unless a force acts upon you, you will stay in place.
Answer:
Explanation: A is the best ranking
As we have four different equipment then for house hold system we know the default power of all
Coffee maker = 1400 W
Vacuum Cleaner = 700 W
Toaster = 1800 W
Electric Drill = 1000 W
now the energy consumed will be given as
here time is same for all that is for 1 hour we used all components
so here maximum energy will be consumed by the component which will have maximum power
So answer must be Toaster which is having maximum power of 1800 W
