1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SSSSS [86.1K]
3 years ago
11

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 d

o when she climbs the stairs?
A.
150 J

B.
270 J

C.
1350 J

D.
2250 J
Chemistry
1 answer:
Flura [38]3 years ago
6 0

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.

You might be interested in
In J.J. Thomson's plum pudding model of the atom, the plums represent
Maksim231197 [3]
The answer is A. The “plums” or the “raisins” of the pudding are the electrons. The actual “pudding” is the nucleus, which is made up of protons and neutrons, so it is a large positively charged mass.
Hope this helps!!! ^v^
8 0
3 years ago
Multiple choice-- please help!
kvasek [131]

The rate law for the reaction : r=k.[A]²

<h3>Further explanation</h3>

Given

Reaction

A ⟶ B + C

Required

The rate law

Solution

The rate law is a chemical equation that shows the relationship between reaction rate and the concentration / pressure of the reactants

For the second-order reaction it can be:

1. the square of the concentration of one reactant.

\tt r=k[A]^2

2. the product of the concentrations of two reactants.

\tt r=k[A][B]

And the reaction should be(for second order) :

2A ⟶ B + C

Thus, for reaction above (reactant consumption rate) :

\tt r=-\dfrac{\Delta A}{2\Delta t}=k[A]^2

6 0
3 years ago
quizlet nitrogen can have variable number of nuetrons(isotopes) it can also have varible number of electrons ehile becomon an io
mafiozo [28]

Nitrogen has 7 protons, 7 neutrons, and 7 electrons.

Seven protons, seven neutrons, and seven electrons make up nitrogen-14.

Utilize the atomic number and mass number of an atom to determine the number of subatomic particles it contains: Atomic number Equals proton count. Electron count equals atomic number. Atomic number - mass number equals the number of neutrons.

Seven protons, seven neutrons, and seven electrons make up the atom of nitrogen. The nucleus is the collection of protons and neutrons that make up the center of an atom. The 7 electrons, which are much smaller than the nucleus, orbit it in what is known as orbits. Since nitrogen-14 is a neutral atom, the number of protons in its nucleus must match the number of electrons around it.

Learn more about atomic numbers at brainly.com/question/2942556

#SPJ4.

6 0
1 year ago
Technological advances in microbiology are providing evidence which indicates:
melomori [17]
Cells and microorganisms are extremely complex
7 0
3 years ago
Read 2 more answers
How many moles are in 2.6 x 10 ^25 atoms of Li?​
Cerrena [4.2K]

Answer:

43 mole

Explanation:

Given data:

Number of atoms of Li = 2.6× 10²⁵ atoms

Number of moles = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.6× 10²⁵ atoms × 1 mole / 6.022 × 10²³ atoms

0.43 × 10² mole

43 mole

5 0
3 years ago
Other questions:
  • Help cure the stupid by answering this also will give crown if right
    10·2 answers
  • An object at 20∘C absorbs 25.0 J of heat. What is the change in entropy ΔS of the object? Express your answer numerically in jou
    12·1 answer
  • Would it be easier or more difficult (compared to zinc) to recover silver from solution? explain
    9·1 answer
  • Explain how paper chromatography could be used to separate a mixture of different coloured inks
    9·1 answer
  • . Ana has two mixtures. Mixture 1: marble and salt. Mixture 2: Salt and pepper She predicts she can easily separate the ingredie
    5·1 answer
  • What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)? 2NH3(g) + 2O2(g)
    6·1 answer
  • Predictions on if a copper is planted
    14·1 answer
  • What is the net force on an object that has a mass of 10g and the acceleration of 100 m/s2?
    7·1 answer
  • Question 13 of 25
    12·1 answer
  • what is the source of energy that is absorbed by the electrons to move from the ground state to excited state?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!