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
Charra [1.4K]
3 years ago
13

The effort needed when a simple machine is used is best described by which of these statements?

Chemistry
1 answer:
defon3 years ago
7 0
C.<span>The effort force is most often smaller than the force needed without the machine.</span>
You might be interested in
When are reactions always spontaneous?
Reika [66]
when ∆G is negative....
5 0
3 years ago
Tell me why in Louisiana it always gotta freaking have a hurricane
Gala2k [10]
Why do so many storms target the state? The easterly winds typically blowing across Jacksonville in the summer flow out of the Azores/Bermuda high-pressure system which also steers many hurricanes into the Gulf. In June and October, storms are more likely to move up the Gulf from the south and southwest.
7 0
3 years ago
Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell
olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

4 0
3 years ago
Wich has a larger percent by mass of sulfur - H2SO or H2S7O8?
Pie

Answer:

Explanation:

H2SO4 let S be x

2(1) + x + 4(-2) = 0

2 + x - 8 = 0

x - 6 = 0

x = 6

For H2S7O8 let S be x

2(1) + 7(x) + 8(-2) = 0

2 + 7x - 16 = 0

7x - 14 = 0

7x = 14

x = 14/7

x = 2

:- H2SO4 as the larger percentage

5 0
3 years ago
815 yd to km (need 3 sig fig)
SpyIntel [72]

<u>Answer:</u> The correct answer is 0.745 km

<u>Explanation:</u>

We are given:

A numerical value of 815 yards

To convert this into kilometers, we use the conversion factor:

1 km = 1093.6 yards

Converting the given value into kilometers, we get:

\Rightarrow 815yd\times \frac{1km}{1093.6yd}=0.745km

Hence, the correct answer is 0.745 km

5 0
3 years ago
Other questions:
  • 3
    13·1 answer
  • How many moles of neon atoms are there in a neon sign that has 2.4 * 20^ 24 atoms of neon? *
    5·1 answer
  • The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds. The hydrogen and oxygen atoms of a water
    6·2 answers
  • You use a 15.0 gram piece of aluminum foil to cover a pan in the oven. The specific heat for aluminum is c = 0.900 J/g o C. If t
    11·2 answers
  • What are some common tools scientists use to measure length and mass?
    14·1 answer
  • This exercise uses the radioactive decay model.
    10·1 answer
  • Why are many fossil remains left from the last ice age
    9·1 answer
  • 2 HBr(g)+O2(g)—&gt;H2O2(g)+Br2(g)
    12·1 answer
  • What is the empirical formula of a compound that is composed of 60.94% carbon 15.36% hydrogen and 23.70% nitrogen
    6·1 answer
  • In need of some help with this question please~
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!