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nexus9112 [7]
3 years ago
15

The specific heat of a liquid Y is 4.2 cal/g degrees Celsius. A sample grams of this liquid at 137 K is heated to 265K. The liqu

id absorbs. 7.82 kcal. What is the sample of liquid in grams?
Physics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer:

54

Explanation:

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What are the top two gasses in the earth’s atmosphere ?
ch4aika [34]

Answer:

Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen (O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases.

7 0
3 years ago
Object approaching or receding, and at what speed?
julia-pushkina [17]

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where is the figure...

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2 years ago
What are the signs of the velocity, force, and acceleration (components) afterthe cart is released and is moving qway from the m
SVETLANKA909090 [29]

Answer:

car is moving away its direction is negative.

the speed must also be negative.

speed this distance decreases the acceleration is negative and if the speed is increasing the acceleration is positive.

Explanation:

In the exercise they indicate that the direction to the motion sensor is positive, as they indicate that the car is moving away its direction is negative.

The speed of the car is

           v = (x₂-x₁) / t

As the positions are negative, and the car moves away the speed must also be negative.

The analysis for acceleration must be very careful if the speed this distance decreases the acceleration is negative and if the speed is increasing the acceleration is positive.

3 0
2 years ago
What does the dashes line represent
Yuki888 [10]
 dashed lines<span> represent bonds away from the viewer.</span>
3 0
3 years ago
According to your graph, does the wave speed change with wave length?
fiasKO [112]

Yes

Explanation:

From the graph, we can deduce that the wavelength changes with the speed of the wave.

This is a simple linear graph. A linear graph has a steady gradient and it shows two variables that increases proportionately.

Using the graph, we can establish that as the wavelength of the wave increases the time taken for one wave to pass through increases.

The speed of a wave is given as:

                     V = fλ

   f is the frequency of the wave i.e the number of waves that passes through a point per unit of time

  λ is the wavelength of the wave

The vertical axis on the graph shows the time for 1 wave trip, this is the wave period, T

            f = \frac{1}{T}

Therefore;

    speed of the wave = \frac{λ}{T}

This can be evaluated by solving slope of the graph and finding the inverse.

We can see that as the speed of the wave changes, the wavelength will change.

 

learn more:

Wavelength brainly.com/question/6352445

#learnwithBrainly

3 0
3 years ago
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