A car travels from boston

For this case, the first thing we are going to do is define a reference system.

We define the vertical axis of the reference system, pointing upwards.

Therefore, doing summation of forces in vertical direction we have:

Then, since we want the net force to be equal to zero, then:

From here, we clear the force that we must apply on the object:

The positive sign means that the force points upwards.

Answer:

to create a net force of zero on the object you must apply:

33 Newton upwards.

C. 4 beats per second is correct

The longest wavelength within the visible spectrum is red light. The correct option is C.

The visible spectrum of light consists of different colors ranging from red to violet. Each color corresponds to a different wavelength. Among the given options, red light has the longest wavelength within the visible spectrum.

A. blue: Blue light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum.

B. orange: Orange light has a shorter wavelength compared to red light. It falls between red and yellow on the visible spectrum.

C. red: Red light has the longest wavelength among the visible colors. It is located on the longer end of the visible spectrum.

D. violet: Violet light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum, just after blue.

Therefore, the correct option is C. red as it has the longest wavelength within the visible spectrum.

To learn more about  the visible spectrum click:

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Answer:

Valence electrons

Explanation:

The valence electrons are found in the outermost shell of an atom. They are the most loosely held electrons found within an atom. These valence electrons are involved and are used to form bonds when atoms combines together.

The energy required to remove these loosely held electrons is relatively low compared to electrons located in the inner orbitals. This is why when atoms combines, they use the outermost electrons to form bonds and mimic stable atoms like those of the noble gases.