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lisabon 2012 [21]
3 years ago
10

Lila is using a Bunsen burner. She has all of her chemicals on her workstation. Which would be the best lab practice?

Physics
2 answers:
morpeh [17]3 years ago
8 0
<span>
putting the burner on a stand to keep it away from chemicals 
</span>Lila is using a Bunsen burner. She has all of her chemicals on her workstation. Which would be the best<span> lab practice? 
</span>
Semmy [17]3 years ago
7 0

Answer:

a, putting the burner on a stand to keep it away from chemicals.

Explanation:

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Four springs with the following spring constants, 113.0 N/m, 65.0 N/m, 102.0 N/m, and 101.0 N/m are connected in series. What is
Llana [10]

Answer:

K_e_q=22.75878093\frac{N}{m}

f=1.363684118Hz

Explanation:

In order to calculate the equivalent spring constant we need to use the next formula:

\frac{1}{K_e_q} =\frac{1}{K_1} +\frac{1}{K_2} +\frac{1}{K_3} +\frac{1}{K_4}

Replacing the data provided:

\frac{1}{K_e_q} =\frac{1}{113} +\frac{1}{65} +\frac{1}{102} +\frac{1}{101}

K_e_q=22.75878093\frac{N}{m}

Finally, to calculate the frequency of oscillation we use this:

f=\frac{1}{2(pi)} \sqrt{\frac{k}{m} }

Replacing m and k:

f=\frac{1}{2(pi)} \sqrt{\frac{22.75878093}{0.31} } =1.363684118Hz

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3 years ago
A large insulating sheet has a surface charge density σ. what is the electric field strength near the insulating sheet?
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Free insulative sheets and insulative sheets backed by a grounded conductor are the only cases in which it is possible to extract reliable information from a noncontacting measurement of the charged state of an insulator. In both cases, the electric field from the charge is the deciding factor.<span>

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a rural mail carrier leaves the post office and drives 22.0 km in a Northely direction. then drives in a 60° south of east direc
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Answer:

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<em> 5 Stars</em>

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Explanation:

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2 years ago
Sound waves tend to move in?
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An Arrow (0.5 kg) travels with velocity 20 m/s to the right when it pierces an apple (2 kg) which is initially at rest. After th
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Answer:

4 m/s

Explanation:

From the law of conservation of momentum,

Total momentum before collision = Total momentum after collision

mu+m'u' = V(m+m')...................... Equation 1

Where m = mass of the arrow, u = initial velocity of the arrow, m' = mass of the apple, u' = initial velocity of the apple, V = Final velocity of the apple and the arrow after collision.

make V the subject of the equation

V = (mu+m'u')/(m+m').................... Equation 2

Given: m = 0.5 kg, m' = 2 kg, u = 20 m/s, u' = 0 m/s(initially at rest)

Substitute into equation 2

V = (0.5×20+2×0)/(2+0.5)

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