PHYSICS HIGH SCHOOL

The molecular formula for phosphorous pentoxide is p4o10. What is its empirical formula?

Answers

Answer 1
Answer:

Answer: P2O5

Explanation:

Answer 2
Answer:

Final answer:

The empirical formula for phosphorous pentoxide is P2O5.

Explanation:

The empirical formula for phosphorous pentoxide is P2O5.

To find the empirical formula, we need to determine the ratio of atoms in the compound.

Since the molecular formula of phosphorous pentoxide is P4O10, we divide the subscripts by their greatest common divisor (gcd) to get P2O5 as the empirical formula.

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When one type of energy changes to another type of energy *A. constant
B. energy conservation
C. energy transformation
D. Other:

Answers

Energy Transformation

Answer:

Energy transfer is the movement of energy from one location to another. Energy transformation is when energy changes from one type to another. While energy can be transferred or transformed, the total energy always remains the same.

Explanation:

You lift a 45N bag of mulch? 1.2meters and carry it a distance of 10 meters how much work was done

Answers

W = Fxd
However, when you carry it, the actual bag of mulch isnt changing height so the only work done on the actual bag is when you lift it.
W = 45N x 1.2m
= 54J

What is a transverse wave?a. particles that travel parallel to the direction of energy movement
b. particles that travel in a reverse direction to the direction of energy movement
c. particles that travel perpendicular to the direction of energy movement
d. particles that travel in an intersecting direction to the direction of energy movement

Answers

the answer is C. they travel perpendicular to the direction of energy

Answer:

The answer is C

Explanation:

A small plastic sphere with a charge of -6.0 nC is near another small plastic sphere with a charge of -14 nC . If the spheres repel one another with a force of magnitude 8.3×10−4 N , what is the distance between the spheres?

Answers

Here is how to answer the question.

Use the formula:
F = kq1q2/r^2 

F = force = 8.3x10^-4N 
q1, q2 = charges 
r = separatioon 
k = constant = 9x10^9 in MKS units 

so we have 

r = sqrt[k q1 q2/F]
r = sqrt[9x10^9*(-14)x10^-9 * (-6)x10^-9 / 8.3x10^-4 ]
r = 0.0302 m

So the distance between spheres is 0.0302 m

A Boy throws a pebble into the center of the pond. A floating leaf near the waters edge oscillates ( moves up and down ) two complete cycles in one second as water waves move past the leaf. The waters wavelength is 10 meters. What is the waves velocity?

Answers

Wave speed = (wavelength) x (frequency)
 
                    = (10 m) x (2 / sec)  =  20 m/s.

By the way . . .
  The water doesn't move past the leaf.  Only the wave does.

Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top. Explain how

Answers

When hot water comes in contact with cold water , the hot water from the bottom of the vessel is hot and so reduces its density. So low density ware goes up and cold water from side or above replaces the space. This is how Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top.

What is convection?

The process of heat transfer from one part of a fluid to another part by the actual movement of the particles of the fluid is called convection. Liquid and gases are heated by the process of convection.

When hot water comes in contact with cold water , the hot water from the bottom of the vessel is hot and so reduces its density. So low density ware goes up and cold water from side or above replaces the space. This is how Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top.

learn more about convection

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The transfer of energy means, in convention process, transport of matter. In this case, hot water has lower density than cool water. The water with less density ascends and leaves gaps that are occupied with cooler water "packages".
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