All life that we know of is based on carbon. Carbon's ability to form many chemical bonds is an important characteristic that allows it to form the basis of life. Identify two other elements that can probably also form a large number of bonds and that probably have similar properties to carbon.

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Answer 1

Answer: One answer I think would be Oxygen

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Name 2 forces acting on an object at rest Only need 1 got gravity

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You mean like a box sitting on a table.

One force is the force of gravity, pulling downward on the box.

Now, you know that the forces acting on the box must be balanced, because
if they're not, then the box would be accelerating. But it's just sitting there, so
there must be some other force, just exactly the right strength and direction to
exactly cancel the force of gravity on the box, so that the net force on it is zero.

The other force is the force of the table pushing upward on the box. It's called
the "normal force".

If you apply 100.0 N of force to lift an object with a single, fixed pulley, then what is the resistive force?

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If you apply 100.0 N of force to lift an object with a single, fixed pulley, then the resistive force is also equivalent to 100 Newtons of force. Since the weight of the object was not mentioned, it is assumed that it has already been taken into account in the 100 N value of force. This follows Newton's law of motion of equal action and reaction.

The precision of a voltmeter is ±0.005 V. The accepted value for a measurement is 9.016 V. Which measurement is in the accepted range?

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Since there are no choices given, let us just solve for the acceptable range of values. The problem states that the precision of a voltmeter is +- 0.005 V. Meaning, the value can deviate by this amount positively or negatively. Since our accepted value is 9.016 V, then the acceptable range would be 9.011 V ~ 9.021 V.

After a large snowstorm, you shovel 2,500 kilograms of snow off of your sidewalk in half an hour. You liftthe shovel to an average height of 1.5 meters while you are piling the snow in your yard.
a. How much work did you do? Hint: The force is the weight of the snow.
b. What was your power in watts? Hint: You must always convert time to seconds when calculating power.

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Well, the snow has a total weight G=mg=25,000 N. The work is L=Fd=Gh=1.5*25,000=37,500 J. The power is L/t, where t=1800 seconds. P=37,500/1800=20.833 W.

Can a vector be shorter than one of its components

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It can never be shorter than a component - magnitude of avector is the square root of the sum of the components squared, and a square function never produces a negative number. However, it can be the same size as its component, if that component is the only one

Which geochemical cycle involves mantle convection

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the answer is rock cycle

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