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3 years ago

Which describes an object in projectile motion? Check all that apply.

2 answers:

8 0

When an object is thrown near the Earth's surface than it has a projectile motion. The thrown object is called projectile. The projectile is influenced by the gravity and moves along a curved path.A projectile has an initial velocity, which is either horizontal or upward at an angle.
An object in projectile motion is described with the following statements:
- Gravity acts to pull the object down.
- The path of the object is curved.

VladimirAG [237]3 years ago

5 0

IT - Gravity acts to pull the object down.

- The path of the object is curved.

that the answer i got it Right on the test

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Assuming all other variables are constant, if the pressure of a gas is increased from 2. atm to 6 atm the volume would change fr

Leona [35]

Answer:

2.0 Liters

Explanation:

Boyles law

P1 V1 = P2 V2

V2= P1 V1 / V2

7 0

3 years ago

The kinetic molecular theory states that all particles of an ideal gas are

Marizza181 [45]

THE KINETIC MOLECULAR THEORY STATES THAT ALL PARTICLES OF AN IDEAL GAS ARE IN CONSTANT MOTION AND EXHIBITS PERFECT ELASTIC COLLISIONS.

Explanation:

An ideal gas is an imaginary gas whose behavior perfectly fits all the assumptions of the kinetic-molecular theory. In reality, gases are not ideal, but are very close to being so under most everyday conditions.

The kinetic-molecular theory as it applies to gases has five basic assumptions.

Gases consist of very large numbers of tiny spherical particles that are far apart from one another compared to their size.
Gas particles are in constant rapid motion in random directions.
Collisions between gas particles and between particles and the container walls are elastic collisions.
The average kinetic energy of gas particles is dependent upon the temperature of the gas.
There are no forces of attraction or repulsion between gas particles.

5 0

2 years ago

When studying atoms, scientists can ignore the

vekshin1

When studying atoms, scientists can ignore the Gravitational force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom.

Explanation:

Scientists can ignore the gravitational force because the gravitational force is considered to be negligible as compared to the other forces due to its smaller value.We all know that the gravitational force is directly proportional to the mass of an object which result in a small force value.When the value of this small force is compared to the value of the electrical force between protons and electrons in atoms the we can say that the electrical force is million times stronger than the gravitational force

Thus we can say that scientists can ignore the Gravitational force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom.

3 0

2 years ago

What is the specific heat for the steel wire

olganol [36]

I think that the answer is 0.49

8 0

3 years ago

If 63.8 grams of aluminum metal (Al) react with 72.3 grams of sulfur (S) in a synthesis reaction, how many grams of the excess r

Jobisdone [24]

Answer:

23.2 g of Al will be left over when the reaction is complete

Explanation:

2Al + 3S → Al₂S₃

1 mol of Al = 26.98 g

1 mol of S = 32.06 g

Mole = Mass / Molar mass

63.8 g/ 26.98 g/m = 2.36 mole of Al

72.3 g / 32.06 g/m = 2.25 mole of S

2 mole of Aluminun react with 3 mole of sulfur

2.36 mole of Al react with (2.36 .3)/2 = 3.54 m of S

As I have 2.25 mole of S, and I need 3.54 S, is my limiting reagent so the limiting in excess is the Al.

3 mole of S react with 2 mole of Al

2.25 mole of S react with (2.25 m . 2)/3 = 1.50 mole

I need 1.50 mole of Al and I have 2.36, that's why the Al is in excess.

2.36 mole of Al - 1.50 mole of Al = 0.86 mole

This is the quantity of Al without reaction.

Molar mass . mole = Mass → 26.98 g/m . 0.86 m = 23.2 g

7 0

3 years ago