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miss Akunina [59]
3 years ago
8

The ratio of change in velocity to time elapsed is

Chemistry
1 answer:
Kay [80]3 years ago
6 0
The ratio of the displacement (change in position) of an object divided by the time interval during which the displacement occurred. Velocity is a vector, having both magnitude and direction. Units: m/s (SI), cm/s (cgs), ft/s (U.S. customary system). See instantaneous velocity.
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The temperature of a sample of iron with a mass of 10.0g changed from 50.4 degrees C with the release of 114J. What is the speci
earnstyle [38]

Answer:

c = 449 \:  j   \: kg  {}^{ - 1}  \: k {}^{ - 1}

6 0
3 years ago
HELP MEEEE ASAP PLEASEEEE !!!!!!!!
jasenka [17]

Ok, I will help you answer but it is very hard to read could you enlarge it first?

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5 0
3 years ago
1) A light bulb takes in 30 of energy per second. It transfers 3j as use
natta225 [31]

Answer:

\boxed{\text{10 \%}}

Explanation:

The formula for efficiency is  

\begin{array}{rcl}\text{Efficiency} & = & \dfrac{\text{useful energy out}}{\text{energy in}} \times 100 \,\% \\\\\eta & = & \dfrac{w_{\text{out}}}{w_{\text{in}} } \times 100 \,\%\\\end{array}

Data:

Useful energy =  3 J

Energy input  = 30 J

Calculation:

\begin{array}{rcl}\eta & = & \dfrac{\text{3 J}}{\text{30 J}} \times 100 \,\%\\\\\eta & = & 10 \, \%\\\end{array}\\\text{ The efficiency is }\boxed{\textbf{10 \%}}

8 0
3 years ago
3. Your company makes 1000 boxes of 500 g baking soda per day.
inessss [21]

500,000 g of baking soda is present in 1000 boxes of 500 g baking soda boxes.

Answer:

Option C.

Explanation:

As 500 g of baking soda is taken in each box of that company. The total weight of baking soda in all the boxes can be determined by adding the weights of each box. This is possible only when the number of boxes is less. But if the number of boxes are large, then we can determine the total weight of baking soda by multiplying the number of boxes with the weight in each box.

So in this case, 1000 boxes are present and in that 500 g of baking soda are present in each box.

So total grams of baking soda will be 1000 * 500 = 5,00,000 g.

Thus, 500,000 g of baking soda is present in 1000 boxes of 500 g baking soda boxes.

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2 years ago
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C. Spacecraft are built to be airtight.
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