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egoroff_w [7]
3 years ago
8

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<span />
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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You throw a ball horizontally from the top of a building, with a speed of 3 m/s. In this problem, you can neglect the force of a
zubka84 [21]

Answer:

Option C. 3 m/s

Explanation:

From the question it is stated that we can neglect the force of air resistance,  therefore there is no force acting on the ball horizontally. From Newton's first law of motion an object will remain at rest or in uniform motion unless acted upon by an external force. thus the ball velocity will remain 3m/s.

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4 years ago
What relationship can you state about the force with which something is hit and its motion?
sladkih [1.3K]
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3 years ago
The drift velocity should be in the same direction as the applied force. <br> a. true <br> b. false
Marina CMI [18]

It is a false statement i.e. drift velocity is not same in the direction as the applied force.

Drift velocity of a  current-carrying conductor can be explained as, the charges i.e. electrons do not  flow in the same direction of current. In other word, in most cases the movement of the electrons is almost random, with a small net velocity. So that , the drift velocity, in the direction opposite to the electric field.

Drift velocity v_{d} is inversely proportional to the number of electron per unit volume of the conductor e. Therefore, the formulation can be given as ,

v_{d} = σ E/ne

The above equation shows the drift velocity in a current carrying conductor  

where, v_{d} is drift velocity , σ is the conductivity, E is electric force and n is number of electrons per unit volume of the conductor e.

Hence here we can say that, the drift velocity is not in the same direction as the applied force.

To know more about drift velocity

brainly.com/question/17167604

#SPJ4

4 0
2 years ago
two pirate ships are having a battle, ship 1 fires a cannon ball 60 m/s at an angle of 30 degrees at pirate ship 2. If ship 2 is
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Answer:

see to sail another day

Explanation:

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When did forensic science start to become influential in solving crimes?
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1900s -- 1980s

Forensic science R&D in the 1980s

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