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Firdavs [7]
3 years ago
15

Convert 68852 millijoules into Calories. (Write your answer in the decimal form. Do not include units in your answer).

Physics
1 answer:
alex41 [277]3 years ago
6 0

Answer: 68852 millijoules = 16.46 calories

Explanation:

Given;

Convert 68852 millijoules to calories.

1 calorie = 4.184J = 4184millijoules

Therefore,

1 millijoule = 1/4184 calories

68852 millijoule = 68852 × 1/4184 calories

= 16.46 calories

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All of the following have been associated with amount of cortisol within the body except __________. A. experiencing problems wi
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Answer: B. development of female sex

Development of female sex characteristic is not associated with the amount of cortisol in the body.

Explanation:

Cortisol is a steroid hormone secreted by the adrenal gland. It facilitates stress response, regulates blood sugar level and helps fight infections. High cortisol level leads to Cushing syndrome and low cortisol level leads to Addison disease.

Obesity is a  symptom of Cushing syndrome while weight loss is a symptom of Addison disease. Thus levels of cortisol can affect body weight as well.  When in a stressful situation, our body pumps excess cortisol.

Cortisol level in our body is generally high in the mornings and low in the midnight.

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3 years ago
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A ball is projected upward at time t = 0.0 s, from a point on a roof 60 m above the ground. The ball rises, then falls until it
musickatia [10]
<span> y=y0 + vt +1/2gt^2
(solve for t here) cause you know y,y0,v,g
you will do quad formula here

then:
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(remember the direction of the ball too (signs))

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7 0
2 years ago
A body travels 10 meters during the first 5 seconds of its travel, and it travels a total of 30 meters over the first 10 seconds
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The total distance traveled by the body is the sum of the distance it traveled for the first five seconds which is 10 m and that of the next five seconds which is 30 meters. Thus, the total distance traveled is 40 m. Dividing this by the time, will give the average speed. The average speed is therefore, 4 m/s. The answer is letter C. 
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Which of these does NOT emit visible light?
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3 years ago
A piano wire with mass 3.50 g and length 83.0 cm is stretched with a tension of 35.0 N. A wave with frequency 120 Hz and amplitu
Mariana [72]

Answer:

The average power is 0.1570 W.

Explanation:

Given that,

Mass of piano wire = 3.50 g

Length = 83.0 cm

Tension = 35.0 N

Frequency = 120 Hz

Amplitude = 1.20 mm

Suppose we need to calculate the average power carried by the wave

We need to calculate the angular frequency

Using formula of frequency

\omega=2\pi f

\omega=2\times\pi\times120

\omega=753.9\ rad/s

We need to calculate the linear density

Using formula of linear density

\mu=\dfrac{M}{l}

Put the value into the formula

\mu=\dfrac{3.50\times10^{-3}}{83\times10^{-2}}

\mu=0.00421\ kg/m

\mu=4.21\times10^{-3}\ kg/m

We need to calculate the average power

Using formula of average power

P_{avg}=\dfrac{1}{2}\sqrt{\mu T}\omega^2\times A^2

Put the value into the formula

P_{avg}=\dfrac{1}{2}\sqrt{4.21\times10^{-3}\times35.0}\times(753.9)^2\times(1.20\times10^{-3})^2

P_{avg}=0.1570\ W

Hence, The average power is 0.1570 W.

7 0
3 years ago
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