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3 years ago

13

The temperature of an object is a measure of the average potential energy of the molecules in the object.

1 answer:

pav-90 [236]3 years ago

3 0

Answer:

false

Explanation:

the temperature of an object is a measure of the average KINETIC ENERGY of the molecules in the object (not potential energy)

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A transformer connected to a 120 V (rms) ac line is to supply 13,000 V (rms) for a neon sign. To reduce shock hazard, a fuse is

TiliK225 [7]

Answer with Explanation:

We are given that

$V_1=120 V$

$V_2=13000 V$

$I_{2}=8.5 mA=8.5\times 10^{-3} A$

$1 mA=10^{-3} A$

a.We know that

$\frac{N_2}{N_1}=\frac{V_2}{V_1}$

$\frac{N_2}{N_1}=\frac{13000}{120}=108.3$

b. $P_{avg}=I_2V_2$

$P_{avg}=13000\times 8.5\times 10^{-3}=110.5 Watt$

c. $I_1=\frac{P_{avg}}{V_1}$

$I_1=\frac{110.5}{120}=0.92 A$

5 0

4 years ago

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Which of the following is the correct equation we get

UkoKoshka [18]

Answer:

$\frac{a}{b}=c$ which agrees with the third answer in your list of answer options

Explanation:

Start with:

$a=b\,*\,c$

divide both sides by b to isolate c on the right:

$\frac{a}{b} =\frac{b\,*\,c}{b} \\\frac{a}{b} =c$

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3 years ago

A metal ball has a mass of 2kg and a volume of 6 m3. What is its density

Lena [83]

Answer: The answer is 333.3333 repeating

Explanation:

Divide the mass by the volume.

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3 years ago

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One billiard ball is shot east at 2.2m/s. A second, identical billiard ball is shot west at 1.2m/s. The balls have a glancing co

Kruka [31]

Answer:

$v_{1}=1.886 \frac{m}{s}$

β= 57.99 south of east

Explanation:

$v_{1}=2.2 \frac{m}{s} \\v_{2}=1.2 \frac{m}{s} \\m_{1}=m_{2}=m\\v_{fx}=1.6 \frac{m}{s} \\v_{fy}=$ ?

Velocity in axis x the two balls come one from east and west

$m_{1}*v_{1x}+m_{2}*v_{2x}=m_{1}*v_{fx1}+m_{2}*v_{fx2}\\m*(v_{1x}+v_{2x})=m*(v_{fx1}+v_{fx2})\\v_{fx2}=0\\v_{1x}+v_{2}=v_{f1}+0\\v_{fx1}=2.2 \frac{m}{s}+(1.2\frac{m}{s})\\ v_{fx1}=1 \frac{m}{s} \\$

Velocity in axis y initial is zero so:

$v_{y1}+v_{y2}=v_{y1f}+v_{y2f}\\v_{y1}=0\\v_{y2}=0\\v_{y1f}+v_{y2f}=0\\v_{y1f}=-v_{y2f}\\v_{y2f}=1.6\frac{m}{s}$

$v=\sqrt{v_{1fx}^{2}+v_{1fy}^{2}}\\ v=\sqrt{1^{2}+1.6^{2}}\\v=1.886 \frac{m}{s}$

Angle is find using:

tan(β)= $\frac{v_{fy}}{v_{fx}}$

$\beta =tan^{-1}*\frac{1.6}{1}=57.99$

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4 years ago

Newton's law of gravitation states that two masses will ______.

spin [16.1K]

Pretty sure the answer is B. Attract each other

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3 years ago

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