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3 years ago

All of the following would be questions that could be scientifically investigated except:

Physics

1 answer:

dimulka [17.4K]3 years ago

5 0

Answer:

"What is the best advice a parent can give a child?"

Explanation:

The other answers have one clear response. Ex: Orange popsicles melt faster than grape popsicles. That would be a fact.

But parental advice can vary, depending on your opinion. I may say that all parents must teach their children not to talk to strangers, while someone else may say that parents should advice their kids to treat everyone fairly. Nothing can be proven as the only appropriate response.

Hope this helps!

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An archer draws her bow and stores 34.8 J of elastic potential energy in the bow. She releases the 63 g arrow, giving it an init

elena-14-01-66 [18.8K]

Answer:

Approximately $71\%$ .

Explanation:

The formula for the kinetic energy $\rm KE$ of an object is:

$\displaystyle \mathrm{KE} = \frac{1}{2}\, m \cdot v^2$ ,

where

$m$ is the mass of that object, and
$v$ is the speed of that object.

Important: Joule ( $\rm J$ ) is the standard unit for energy. The formula for $\rm KE$ requires two inputs: mass and speed. The standard unit of mass is $\rm kg$ while the standard unit for speed is $\rm m \cdot s^{-1}$ . If both inputs are in standard units, then the output (kinetic energy) will also be in the standard unit (that is: joules,

Convert the unit of the arrow's mass to standard unit:

$m = 63\; \rm g = 0.063\; \rm kg$ .

Initial $\rm KE$ of this arrow:

$\begin{aligned}\mathrm{KE} &= \frac{1}{2} \, m \cdot v^2 \\ &= \frac{1}{2}\times 0.063\; \rm kg \times \left(\rm 28 \; m \cdot s^{-1}\right)^2 \\ &\approx 24.696\; \rm J\end{aligned}$ .

That's the same as the energy output of this bow. Hence, the efficiency of energy transfer will be:

$\displaystyle \frac{24.696\; \rm J}{34.8\; \rm J} \times 100\% \approx 71\%$ .

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3 years ago

Which point on the standing wave is a node?

Digiron [165]

Answer: it’s c

Explanation: ap3x

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How would your mass change if you took a trip to the space station? 1. no change in mass 2. decreases; you weigh less. 3. increa

____ [38]

No chande in mass becouse of the change in gravitational force do not effect in mass

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Identify the energy transformations in the image below:

Masteriza [31]

Answer:

B. Chemical to Electrical to Radiant

Explanation:

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3 years ago

What is the percent identity between the ? and ? globin sequences?

ddd [48]

The percent of monkey globin amino acids are βidenticalto the human grouping is known as the percent character between the monkey and human globin sequences.The globins are a superfamily of heme-containing globular proteins, required in authoritative or potentially transporting oxygen. These proteins all join the globin crease, a progression of eight alpha-helical fragments.

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3 years ago