Gabriella weighs 450 N. She climbs a flight of stairs to a height of 3 m. It takes her 5 seconds. How much work does Gabriella do when she climbs the stairs?A.
150 J

B.
270 J

C.
1350 J

D.
2250 J

Answers

Answer 1

Answer:

The formula that can be applied in this problem is W = Fd where W is work, F is the force and d is distance. You have 450N and 3m, all you have to do is to multiply it.

W = Fd

W = (450N) (3m)

W = 1350J

The answer is letter C.

Related Questions

What is the ratio of sodium ions to bromide ions in neutral sodium bromide?
Which statement best explains why different gases effuse at different rates?At a given pressure, gas particles with smaller masses move faster. At a given pressure, gas particles with smaller masses move slower. At a given temperature, gas particles with smaller masses move faster. At a given temperature, gas particles with smaller masses move slower
Which compound is an unsaturated hydrocarbon
When a liquid is cooled, the kinetic energy if the particles A. Decrease B. Increases C. Remains the same. The force of attraction between the particles A. Decrease B. Increases C. Remains the same , the space between the particles A. Decrease B. Increases C. Remains the same
Which substance can act as an arrhenius base in an aqueous solution

In the doorbell configuration, describe what is initiated when someone presses the button outside your home.

Answers

Answer:

When the bell is rung the switch closes allowing electricity to flow making the hammer hit the bell, making the sound to alert people in the house.

Explanation:

What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants are in the aqueous or liquid phase?

Answers

The formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide will be the same even if all products and reactants are in the aqueous or in the liquid phase. It is as follows:

H2SO4 + 2NaOH = Na2SO4 + 2H2O

C) H2SO4 + 2NaOH = Na2SO4 + 2H2O

calculate the molar mass of a gas if 3.30 grams of the has occupies 660 ml at 735mmHg and 27 degrees C

Answers

The molar mass of the gas that occupies the given volume is 127.4 g/mol.

The given parameters;

mass of the gas, m = 3.3 g
volume of the gas, V = 660 ml = 0.66l
pressure of the gas, P = 735 mmHg
temperature of the gas, T = 27 ⁰C = 273 + 27 = 300 K

The number of moles of the gas is calculated form ideal gas law as follows;

PV = nRT

where;

n is the number of moles
R is the gas constant = 62.36 L.mmHg/mol.K

$n = (PV)/(RT) \n\nn = (0.66 * 735)/(62.36 * 300) \n\nn = 0.0259 \ mole$

The molar mass of the gas is calculated as follows;

$no. \ mole = (reacting \ mass)/(molar \ mass) \n\nmolar \ mass = (reacting \ mass)/(no.\ mole) \n\nmolar \ mass =(3.3)/(0.0259) \n\nmolar \ mass = 127.4 \ g/mol$

Thus, the molar mass of the gas that occupies the given volume is 127.4 g/mol.

Learn more here:brainly.com/question/24542515

Use the ideal gas law PV = nRT and manipulate it to solve for n. PV/RT = n.Convert to SI units:660ml -> 0.660 L27 degrees -> 300 KLeave Pressure as isUse 62.36368 for R becuase you are using mmHg for Pressure.Now plug into the equation to get about 0.025928 mols. Divide the 3.30 grams by the mols to get about 127 g/mol.

The shape of a molecule is tetrahedral. How many lone pairs are most likely on the central atom?zero
two
three
four

Answers

Answer: Zero lone pairs on the central atom.

Explanation:

Lone pairs and bond pairs together decides the geometry of the molecule.
Bond pairs together decides the shape of the molecule.

The molecule is with with tetrahedral shape which means that molecule has a tetrahedral geometry.

The value of number of electrons around the central atom with tetrahedral geometry according to VESPR theory is '4'. Which means that electrons around the central atom are 4.

Since, the molecule is in tetrahedral shape which means four bonds are pointing in direction towards the four vertices of tetrahedral which means their are zero lone pair present on the central atom.

The number of lone pairs that are most likely found on the central atom is zero. There are no lone pairs found on the central atom.

How does a prokaryotic cell know how to reproduce? A The instructions necessary are found in the nucleoid. B A hormone is released that prompts a mature cell to mate. C An enzyme reacts with the cytoplasm to create two cells from one. D The DNA in the nucleus provides the instructions to the cell.

Answers

D. The nucleus provides instructions to all organelles in the cell

Atoms are:O A. One of the 4 elements that matter is composed of.
B. Connected by bonds to form compounds.
OC. The basic building blocks of matter.
O D. Heterogeneous and refer to color, texture, and appearance.
Reset Selection

Answers

Atoms are the basic building blocks of matter. The correct option is C.

What are atoms?

Atoms are the basic unit and building block of matter. They are the smallest unit, but they can be divided. They do not emit charge on dividing into the further, the smallest parts.

Atoms are further divided into electrons, protons, and neutrons. They are the charged particles that revolve in the shell of the atom. A nucleus is also present in the between of the atom.

Atoms are considered the building blocks of matter, as all matter is made up of many atoms. The configuration of the atom defines the state of matter.

Thus, the correct option is C. The basic building blocks of matter.

To learn more about atoms, refer to the link:

brainly.com/question/1566330

#SPJ5

Answer:c

Explanation: atoms make matter

Other Questions

Pure substances found on the periodic table are called what?

Which equation represents a change that results in an increase in disorder?

Why would a person could jump further on moon than on Jupiter?

If 10.3 g of Mg3N2 is treated with water, what volume of gas would be collected at STP