When the orientation of the Moon is just right, the high tides from the lunar bulge and the solar bulge line up, causing a very strong "Spring tide" --- an especially high high tide and a very low low tide. At what Moon phase(s) will you see a Spring tide?

If all the components of a vector is equal to 1, then that vector is not a unit vector but .

Answer: False

Explanation:

Unit Vector

A vector which defines the direction of a physical quantity is known as a Unit Vector. For a vector, the unit vector is the vector/ mod of the value. Since the mod of a unit vector is always 1, the value is simply represented as its vector form.

If we take all the components of a vector quantity as 1, then its mod will be,

i.e. which is not a unit vector.

Hence, the given statement is false.

Final answer:

All components of a vector being equal to 1 does not necessarily define a unit vector. A unit vector is defined by having a magnitude, or length, of 1. Unless it's a 1-D vector with its single component as 1, a vector with all components as 1 won't be a unit vector.

Explanation:

In mathematics, particularly vector algebra, a unit vector is a vector of length 1. The condition you've mentioned – all components of a vector being equal to 1 – does not generally define a unit vector. When the components of a vector are all 1s (in a 2D or 3D space, for instance), the resultant vector is not a unit vector. This is because the magnitude or length of a vector is calculated by the square root of the sum of the squares of its components.

Learn more about Unit Vector here:

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The average acceleration of the ferry which leaves Guemes Island and heads back  toward Anacortes is 0.627m/s².

Given the data in the question;

• Initial speed;

• Final speed;

• Time taken;

To determine the average acceleration, we use the first equation of motion:

Where v is final speed, u is initial speed, a is acceleration and t is time taken.

We substitute our given values into the equation

Therefore, the average acceleration of the ferry which leaves Guemes Island and heads back  toward Anacortes is 0.627m/s².

Answer:

0.63m/s²

Explanation:

The average acceleration can be derived from using the formula:

V = u + at

Where v = final velocity (m/s)

u = initial velocity (m/s)

a = acceleration (m/s²)

t = time (s)

V = u + at

V - u = at

a = v - u/t

a = ∆V/t

According to the provided information; v = 5.8m/s, u = 0m/s, t = 9.25s

a = ∆V/t

a = (5.8-0)/9.25

a = 5.8/9.25

a = 0.627

a = 0.63m/s²

Hence, the average acceleration is 0.63m/s²

Answer: D. relatively inexpensive and readily available

Fossil fuels are non-renewable sources of energy these resources formed by the geological processes occurring in the earth. It takes millions of years for their formation. These includes coal, petroleum, and natural gas. Unfortunately, the distribution of these resources is not even in the regions of the world but efforts have been done by the humans to make them available everywhere. They are relatively inexpensive and readily available this contributes to the majority of the world's energy use.