Answer:
1) A> B, 2) A = B, 3) A> B
Explanation:
When a figure is given the number of significant figures to determine the precision or uncertainty the number
1) the uncertainty in the number with three significant figures is less than the number with two significant figures
statement A 2.6
statement B 2.57
A> B
2) decalration A
2,567 + 3,146 = 5,713
with two figures it remains
5.7
statement B
2.6 + 3.1 = 5.7
A = B
3) for the product the result is with the number that has the least significant figures
statement A
rectangles area
2.536 * 1.4 = 3.6
statement B
2.536 * 1.41 = 3.58
A> B
This is a pretty long question
We need to use the formula P = IV, where P is the power, I is the current and V is the voltage.
When we substitute our values in, we get:
100 = 240I, and so I = 0.42 Amps
Now, we have to work out the Resistance in the circuit at the operating temperature.
We do this using the formula V = IR
240 = (100/240) x R, and we get R = 576 Ohms
Since the resistance has gone up by a factor of 16, all we have to do now is to divide this answer by 16 to get the resistance at room temperature.
576/16 = 36 Ohms
Hope I helped!! xx
Answer:
1.)The bob of pendulum should be displaced with a small angle.
2) The amplitude of the oscillation of a simple pendulum should be small.
3) Fans should be switched off to reduce the air resistance.
4)The simple pendulum should be oscillate in a vertical plane
Hope this helped you
So since m is on both sides of the equal sign, they cancel each other out. Then multiply both sides by 2, so you get 2gh = v². Then (I'm assuming) g = acceleration due to gravity = 9.80 m/s². If you multiply it by the two, you get 19.6 m/s². I'm assuming h is the height, in meters. If you have the number for h, plug it in now and multiply that. You'll get some number x that has a value of m²/s². Since you're looking for v, and right now you only have v², take the square root of both sides of your equation and that'll give you the answer. If you don't have a value for h, though, just write your answer like √(2gh) = v or whatever format like that your teacher usually wants, and you should be good. I don't know how far the teacher wants you to simplify or solve this, but hopefully this gives you what you need! :)
