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3 years ago

Carlos uses a rope to pull his car 30 m to a parking lot because it ran out of gas

Physics

1 answer:

hodyreva [135]3 years ago

3 0

Carlos used a rope to pull his car 30m to a parking lot because it ran out of gas.

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3 years ago

65 Points! 9 Questions!

alekssr [168]

Answer:

energy : the ability to cause change

work : is force x distance or when an object moves a distance due to a specific force (measured in units of newtons-meters)

potential energy : is stored energy

kinetic energy : is energy in motion

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chemical : energy stored in chemical bonds, like in plants

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4 years ago

A number line goes from negative 5 to positive 5. Point D is at negative 4 and point E is at positive 5. A line is drawn from po

saul85 [17]

The location of the point F that partitions a line segment from D to E ( $\overline{DE}$ ), that goes from negative 4 to positive 5, into a 5:6 ratio is fifteen halves (option 4).

We need to calculate the segment of the line DE to find the location of point F.

Since point D is located at negative -4 and point E is at positive 5, we have:

$\overline{DE} = E - D = 5 - (-4) = 9$

Hence, the segment of the line DE ( $\overline{DE}$ ) is 9.

Knowing that point F partitions the line segment from D to E ( $\overline{DE}$ ) into a 5:6 ratio, its location would be:

$F = \frac{5}{6}\overline{DE} = \frac{5}{6}9 = 5*\frac{3}{2} = \frac{15}{2}$

Therefore, the location of point F is fifteen halves (option 4).

Learn more about segments here:

brainly.com/question/24472171?referrer=searchResults

brainly.com/question/13270900?referrer=searchResults

I hope it helps you!

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3 years ago

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Q. No. 9 A body falls freely from the top of a tower and during the last second of its fall, it falls through 25m. Find the heig

HACTEHA [7]

Answer:

45.6m

Explanation:

The equation for the position y of an object in free fall is:

$y=-\frac{1}{2} gt^2+v_0t+y_0$

With the given values in the question the equation has one unknown v₀:

$v_0=\frac{y-y_0}{t}+\frac{1}{2}gt$

Solving for t=1:

1) $v_0=y-y_0+\frac{g}{2}$

To find the hight of the tower you can use the concept of energy conservation:

The energy of the body 1 sec before it hits the ground:

2) $E=\frac{1}{2}m{v_0}^2+mgy_0$

If h is the height of the tower, the energy on top of the tower:

3) $E=mgh$

Combining equation 2 and 3 and solving for h:

4) $h=\frac{{v_0}^2}{2g}+y_0$

Combining equation 1 and 4:

$h=\frac{{(y-y_0+\frac{g}{2}})^2}{2g}+y_0$

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3 years ago

What is the effect on an electric current when the voltage is increased? An increase in voltage causes the flow of electric curr

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the answer is increase.

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