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3 years ago

8

If you have a 100-watt light bulb, how much energy does it use each minute?

1 answer:

Mamont248 [21]3 years ago

3 0

A 100-watt light bulb uses 6,000 joules per minute.

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Devon has several toy car bodies and motors. The motors have the same mass, but they provide different amounts of force, as show

Grace [21]

Answer:

pretty sure its motor 2, with body 1

Explanation:

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3 years ago

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Which of the following is true in regard to a charged atom?

anzhelika [568]

I believe a charged Atom is an ion. And that a charged atom possess it's charge due to the different number of electrons that it possess. Unlike an uncharged atom or neutral atom, a charged atom may possess more or less than the number of electrons found in an uncharged atom.

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3 years ago

The animation shows a ball which has been kicked upward at an angle. Run the animation to watch the motion of the ball. Click in

sergejj [24]

Answer:

The acceleration of the ball is $a_y = - 0.3672 \ m/s^2$

Explanation:

From the question we are told that

The maximum height the ball reachs is $H_{max} = 42.24 \ m$

The horizontal component of the initial velocity of the ball is $v_{ix} = 5.57 \ m/s$

The vertical component of the initial velocity of the ball is $v_{iy} = = 16.18 m/s$

The vertically motion of the ball can be mathematically represented as

$v_{fy}^2 = v_{iy} ^2 + 2 a_{y} H_{max}$

Here the final velocity at the maximum height is zero so $v_{fy} = 0 \ m/s$

Making the acceleration $a_y$ the subject we have

$a_y = \frac{v_{iy} ^2}{2H_{max}}$

substituting values

$a_y = - \frac{5.57^2}{2* 42.24}$

$a_y = - 0.3672 \ m/s^2$

The negative sign shows that the direction of the acceleration is in the negative y-axis

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3 years ago

Which of the following is not a major function of the roots?

sashaice [31]

it is c. it is photosynthesis because is under the ground and away from the sun

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3 years ago

Which statement best describes balancing equations and the law of conservation of mass?

Sauron [17]

Answer:

it would be c, there are fewer atoms in the reactants than in the products, and the total mass is less in the reactants than in the products.

Explanation:

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