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3 years ago

HELP PLEASE 10 PTS!!!!!!

Physics

2 answers:

IgorLugansk [536]3 years ago

5 0

I think its A but I very well could be wrong sorry if I am wrong hope this helps

guapka [62]3 years ago

4 0

The correct option is A.

Elements are substances that are made up of atoms of the same type., while compounds are made of two or more atoms of different types.

Some common examples of elements are Iron, Sodium, oxygen, Hydrogen, while NaCl ( Sodium Chloride), Water (H_2O) , Ammonia (NH_3) are compounds.

It can be seen that the compounds are composed of atoms of different substances.

Chlorine is a diatomic molecule, where two Chlorine atoms are bonded by a covalent bond. Since both atoms in a Chlorine molecule are the same, it cannot be called a compound.

Hence Chlorine, though it has more than one atom in its molecular form, is still called element.

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A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the dr

ivanzaharov [21]

Answer:

825 m

Explanation:

330 m/s

1 / 0.40 = 2.5

330 x 2.5 = 825

7 0

3 years ago

Answer it asap I promise i will mark them the Brainly

nataly862011 [7]

Answer:

A) The acceleration is zero

B) The total distance is 112 m

Explanation:

Velocity vs Time Graph

It shows the behavior of the velocity as time increases. If the velocity increases, then the acceleration is positive, if the velocity decreases, the acceleration is negative, and if the velocity is constant, then the acceleration is zero.

The graph shows a horizontal line between points A and B. It means the velocity didn't change in that interval. Thus the acceleration in that zone is zero.

A. To calculate the acceleration, we use the formula:

$\displaystyle a=\frac{v_2-v_1}{t_2-t_1}$

Let's pick the extremes of the region AB: (0,8) and (12,8). The acceleration is:

$\displaystyle a=\frac{8-8}{12-0}=0$

This confirms the previous conclusion.

B. The distance covered by the body can be calculated as the area behind the graph. Since the velocity behaves differently after t=12 s, we'll split the total area into a rectangle and a triangle.

Area of rectangle= base*height=12 s * 8 m/s = 96 m

Area of triangle= base*height/2 = 4 s * 8 m/s /2= 16 m

The total distance is: 96 m + 16 m = 112 m

4 0

3 years ago

An electronic charge can be transmitted through?

DedPeter [7]

Answer:

An electronic charge can be transmitted through the human body, water and metals.

6 0

4 years ago

30 POINTS!!!! If you increase the frequency, what happens to the velocity of the wave?

CaHeK987 [17]

Answer:

As frequency increases, wavelength decreases. Frequency and wavelength are inversely proportional. This basically means that when the wavelength is increased, the frequency decreases and vice versa.

Explanation:

4 0

3 years ago

Read 2 more answers

When the motion of one or both of the particles is at an angle to the line of impact, the impact is said to be ________

Nana76 [90]

Answer: Oblique impact

Explanation:

When the motion of one or both of the particles is at an angle to the line of impact, the impact is said to be oblique impact.

On the other hand, when the directions of motion of the two colliding particles are moving along a line of impact, then it's refered to as central impact.

7 0

3 years ago