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3 years ago

Please help me with this science question.

Physics

1 answer:

drek231 [11]3 years ago

8 0

The answer would possibly be H in my mind

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The Fitness Gram push-up test is a measure of

Morgarella [4.7K]

Answer:

The answer is B.

Explanation:

I meant B. not C so sorry

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3 years ago

State two factors that affect the type of Shadows formed

Vadim26 [7]

Answer:

The two factors that affect the type of Shadows formed are stated below ::

The distance between the source of land and the object.
The angel where the ray of light falls on the object.

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2 years ago

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9. If the frequency of a certain light is 3.8 x 10<br> Hz, what is the energy of this light?

ddd [48]

Answer:

E = h*f = (6.63*10^-34) *( 3.8*10)

E = 2.5 *10^-32

Explanation:

e= Energy

h = Planck's constant

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3 years ago

If you travel from Yakima to Ellensburg (Yakima to Ellensburg is 50 miles) with a speed of 60 miles/hour for half of the

koban [17]

Answer:

$\displaystyle \frac{480}{7}\approx 68.6\; \rm mph$ .

Explanation:

The average speed of an object is equal to total distance over total time.

Distance traveled: $\rm 50 \; mi$ .

How much time is taken? This trip is divided into two halves, each of distance $\displaystyle \frac{50}{2} = 25\;\rm mi$ .

Time spent on the first half of the trip:

$\displaystyle t_1 = \frac{s_1}{v_1} = \frac{25}{60} = \frac{5}{12}\; \rm hours$ .

Similarly, time spent on the second half of the trip:

$\displaystyle t_2 = \frac{s_2}{v_2} = \frac{25}{80} = \frac{5}{16}\; \rm hours$ .

In total:

$\displaystyle \frac{5}{12} + \frac{5}{16} = \frac{35}{48} \; \rm hours$ .

Average speed:

$\begin{aligned} \text{Average speed} &= \frac{\text{Total Distance}}{\text{Total Time}}\\ &= 50 \left/\frac{35}{48}\right.\\ &= 50 \cdot \frac{48}{35} \\&= \frac{480}{7}\approx 68.6\; \rm mph \end{aligned}$ .

This value turned out to be slightly different from the average of the speed during the two halves of the journey. The reason is that the object traveled at each speed for a different amount of time. It spent more time at the slower speed, which gives that speed a greater weight in the average. That explains why the average speed is closer to $\rm 60\; mph$ rather than $\rm 80\; mph$ .

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3 years ago

why does electrical process signals often take the form of a current instead of voltage? two specific reasons for this.

wolverine [178]

voltage signals drop over distance due to resistance while current remains the same.

also the building blk of electronic device is a transistor n transistor is turned on/off by current; so dats the signal instead of voltage.

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3 years ago

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