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3 years ago

What type of essay explains the results of a specific event?

2 answers:

7 0

I would say B, cause and effect, because it explains the results of something that happened (i hope that makes sense lol)

madreJ [45]3 years ago

6 0

Answer:

Explanation:

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What is the charge on a hypothetical ion with 35 protons and 37 electrons?

irinina [24]

Charge= Protons- electrons
Charge= 35p-37e= -2

This Ion will have a charge of -2<span>. </span>

5 0

3 years ago

: Modeling Chemical Reactions

77julia77 [94]

Answer:

A Matter is not created or destroyed and the same amount of mass remains

Explanation:

In a chemical reaction, according to the law of conservation of matter, "matter is neither created nor destroyed and the same amount of mass remains in such a process".

New kinds of products are formed in a chemical reaction because they undergo chemical changes.
The chemical changes results in energy changes and formation of new kinds of substances.
Based on the law of conservation of matter, mass is constant.
Mass is not lost or gained.

8 0

3 years ago

Vectors a and b have scalar product â6.00, and their vector product has magnitude +9.00. what is the angle between these two vec

salantis [7]

Answer:

Value of angle between vector a and b is $56.30^{\circ}$ .

Explanation:

Vectors a and b have scalar product 6.00

Let $\theta$ be the angle between a and b.

$\vec{a}.\vec{b} = 6$

ab cos $\theta$ = 6 ...(1)

Vectors a and b have magnitude of vector product 9.00

$\vec{a} \times\vec{b} = 9$

ab sin $\theta$ = 9 ...(2)

Dividing equation (2) by (1) we get

$\frac{ab sin \theta}{ab cos \theta} = \frac{9}{6}$

tan $\theta$ = 1.5

$\theta = tan ^{-1} (1.5)$

$\theta$ = $56.30^{\circ}$

Thus, value of angle between vector a and b is $56.30^{\circ}$ .

3 0

4 years ago

1. Which pair of physical quantities consists of two vectors?

Tems11 [23]

Answer:

Velocity and force consists of two vectors as they both have magnitude and direction

8 0

3 years ago

Read 2 more answers

A 500-kilogram horse runs at 5 meters/second. The horse’s kinetic energy is <br> joules.

kari74 [83]

To solve this, we are going to use the formula for the kinetic energy of an object: $E_{k}= \frac{1}{2} mv^2$
where
$E_{k}$ is the kinetic energy of the object.
$m$ is the mass of the object.
$v$ is the speed of the object.

We know form our problem that the mass of the horse is 500 kilograms, so $m=500$ ; we also know that the speed of the horse is 5 meter/second, so $m=5$ . Lets replace those values in our formula to find $E_{k}$ :
$E_{k}= \frac{1}{2} mv^2$
$E_{k}= \frac{1}{2} (500)(5)^2$
$E_{k}= \frac{1}{2} (500)(25)$
$E_{k}= \frac{12500}{2}$
$E_{k}=6250$ J

We can conclude that the kinetic energy of the horse is 6250 Joules.

7 0

4 years ago

Read 2 more answers