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3 years ago

6

What is the part of an atom that has no charge?

1 answer:

avanturin [10]3 years ago

8 0

Nuetron has no positive or negative charge

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Two quantities a and b have a proportional relationship where a is -4 and b -3 create an equation to represent this relationship

sladkih [1.3K]

Answer:

a = (4/3)b

Step-by-step explanation:

The governing equation here has the form y = kx, where k is the constant of proportionality.

Let's rewrite that as a = kb, and then substitute -4 for a and -3 for b:

-4 = k(-3), or k = 4/3

Then a = (4/3)b

6 0

3 years ago

(9 x 10⁶)(8 x 10⁻⁴)= ?

ycow [4]

Answer: 7.2x10 3

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Calculate cos(480°) and sin(480°).

hram777 [196]

Answer:

$\cos(480^\circ)=-\dfrac{1}{2}$

$\sin(480^\circ)=\dfrac{\sqrt{3}}{2}$

Step-by-step explanation:

Calculate the value of trigonometry function.

$\cos(480^\circ)$ and $\sin(480^\circ)$

Split the angle between 0 to 90° using trigonometry formula.

$\Rightarrow \cos(360^\circ+120^\circ)$

$\Rightarrow \cos(120^\circ)$ $\because \cos(360+\theta)=\cos\theta$

$\Rightarrow \cos(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow -\cos(60^\circ)$ $\because \cos(180-\theta)=-\cos\theta$

$\Rightarrow -\dfrac{1}{2}$

Therefore, cos(480°) = -0.5

$\Rightarrow \sin(360^\circ+120^\circ)$

$\Rightarrow \sin(120^\circ)$ $\because \sin(360+\theta)=\sin\theta$

$\Rightarrow \sin(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow \sin(60^\circ)$ $\because \sin(180-\theta)=\sin\theta$

$\Rightarrow \dfrac{\sqrt{3}}{2}$

Therefore, sin(480°) = 0.866

7 0

4 years ago

Evaluate the following absolute value expressions. 5|2-8|

andriy [413]

Yur answer to ur question is 30

4 0

3 years ago

A rectangular prism has a volume of 192 cubic inches the prism is 4 inches wide.....

cluponka [151]

Answer:

6 inches

Step-by-step explanation:

the formula for the volume of a rectangular prism is width*length*height.

Here we are asked to find the height when given a volume. The resultant equation is:

volume = w * l * h

192 cu.in. = 4in*8in*h(inches), simplify the equation by dividing each side by 32 (which is 4*8) to yield:

192 cu.in./32 sq.in.= h inches

6 inches = height

5 0

3 years ago