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Mariulka [41]
3 years ago
15

El Niño occurs every 2 to 12 years. true false

Physics
2 answers:
wlad13 [49]3 years ago
8 0

yep this is true i took the test

Novosadov [1.4K]3 years ago
5 0
True
It is True I took the test
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Precision is how close a series of measurements are to ______
Leya [2.2K]

Answer:

Accuracy is how close a measured value is to an accepted value. <u>Precision is how close measurements are to one another.</u> To make measurements, you have to evaluate both the accuracy and the precision to get a correct value.

3 0
3 years ago
At a certain point in space, there is a potential of 800 V relative to zero. What is the potential energy of the system when a +
sammy [17]

To solve this problem we will apply the concepts related to electric potential and electric potential energy. By definition we know that the electric potential is determined under the function:

V = \frac{k_e q}{r}

k_e = Coulomb's constant

q = Charge

r = Radius

At the same time

U = \frac{k_e q_1q_2}{r}

The values of variables are the same, then if we replace in a single equation we have this expression,

U  = Vq

If we replace the values, we have finally that the charge is,

V = 800V

q = 1\mu C

U = (800V)(1*10^{-6}C)

U = 8*10^{-4}J

Therefore the potential energy of the system is 8*10^{-4} J

7 0
3 years ago
Which simple experiment could be conducted to show an example of how lightning is created? A) Rub a balloon so it picks up extra
alexandr1967 [171]

I think the answer is d

7 0
3 years ago
Raising 100 grams of water from 40 to 60 °C (the specific heat capacity of water is 1
ANTONII [103]
C. 2000 calories.

Explanation/calculation:

Specific heat capacity = calories / mass * (final temperature - initial temperature)

1 = calories / 100 * (60 - 40)
1 = calories / 100 * 20
1 * (100 * 20) = calories
1 * 2000 = calories
2000 = calories
5 0
3 years ago
Read 2 more answers
Zeros that follow non-zero numbers and are also to the right of a decimal point are significant.
Ivenika [448]
Yes that's correct. Also zeros in between non-zero numbers are significant figures
5 0
3 years ago
Read 2 more answers
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