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3 years ago

What is the component of 3i^ + 4j^ along i^+j^

1 answer:

4 0

Using the Pythagorean theorem

a^2 = b^2 + c^2

when a is the hypotenuse, and b and c are opposites and adjacent in a right triangle

3^2 + 4^2 = 5^2

Therefore, the hypotenuse has a magnitude of 5

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Something stopped the force and was able to recreate the same amount of force to send it back to her. Example: A pole

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3 years ago

Read 2 more answers

Which action involves the most efficient conversion of electrical energy into thermal energy?

azamat

Answer:

the answer is option d

because in oven which works through electricity ,it will bake the cake (heat energy is produced)

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4 years ago

How long tg does it take for the balls to reach the ground? use 10 m/s2 for the magnitude of the acceleration due to gravity.

erik [133]

Answer:

1.0s

Explanation:

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3 years ago

What are the only elements that exist in nature as isolated atoms

agasfer [191]

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The only such elements are the Noble Gases (He, Ne, Ar, Kr, Xe, Rn)

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3 years ago

Equations to use: v= λ ∙ f v=d/t

Margarita [4]

b. 460.8 m/s

Explanation:

The relationship between the speed of the wave along the string, the length of the string and the frequency of the note is

$f=\frac{v}{2L}$

where v is the speed of the wave, L is the length of the string and f is the frequency. Re-arranging the equation and substituting the data of the problem (L=0.90 m and f=256 Hz), we can find v:

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c. 18,000 m

Explanation:

The relationship between speed of the wave, distance travelled and time taken is

$v=\frac{d}{t}$

where

v = 6,000 m/s is the speed of the wave

d = ? is the distance travelled

t = 3 s is the time taken

Re-arranging the formula and substituting the numbers into it, we find:

$d=vt=(6,000 m/s)(3 s)=18,000 m$

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3 years ago