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andre [41]
4 years ago
10

Which of the following weighing balances performs measurement in a closed compartment with no air currents to disturb measuremen

t?
Spring balance
Analytical balance
Hydraulic balance
Physics
2 answers:
padilas [110]4 years ago
6 0
Out of the following choices given, hydraulic balances performs measurement in a closed compartment with no air currents to disturb measurement. The correct answer is C. 
ruslelena [56]4 years ago
3 0

Answer: the second option, analytical balance.

Explanation:

Chemical analysis may require very accurate measurements of small samples of matter, and some times that matter is in form of fine powder.

That means that air currents may interfere with the sample, either by dragging part of the sample or by depositing dust over the sample, with which the measure may result not to be as exact as desired to have an analytical result.

An analytical balance is designed to be used in labs to measure small masses with high precision. The weighing pans are inside of a compartment with glass windows which once closed avoid that the air currents to introduce dust or remove some of the sample which would lead to an erroneous measure.

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Charra [1.4K]

Answer:

b) q large and m small

Explanation:

q is large and m is small

We'll express it as :

q > m

As we know the formula:

F = Eq

And we also know that :

F = Bqv

F = \frac{mv^{2} }{r}

Bqv = \frac{mv^{2} }{r}

or Eq = \frac{mv^{2} }{r}

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3 years ago
The maximum pressure achieved during ventricular contraction is called
Bezzdna [24]
Cardiovascular system

8 0
4 years ago
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Henry can lift a 200 N load 20 m up a ladder in 40 s. Ricardo can lift twice the load up one-half the distance in the same amoun
prohojiy [21]
Henry will lift 200 N load 20 m up a ladder in 40 s.  While the Ricardo will take 400 N load in 80 seconds. So, For Henry to take 400 N load it will take him 80 seconds in two attempts. And,also, he will have to cover 40 m of distance. 
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3 years ago
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Find the rms speed of the molecules of a sample of n2 (diatomic nitrogen) gas at a temperature of 31.5°c.
Artemon [7]
The rms speed can be calculated using the following rule:
rms = sqrt ((3RT) / (M)) where:
R is the gas constant =  8.314 J/mol-K
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M is the molar mass = 2*14 = 28 grams = 0.028 kg

Substitute with the givens to get the rms speed as follows:
rms speed = sqrt [(3*8.314*304.5) / (0.028)] = 520.811 m/sec
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What circumstance would allow an officer to search a home even if they didn’t have a warrant?
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Answer:

A

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