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
stellarik [79]
2 years ago
7

A piece of wire 26 m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral tria

ngle. (a) how much wire should be used for the square in order to maximize the total area? 26 m (b) how much wire should be used for the square in order to minimize the total area?
Physics
1 answer:
kiruha [24]2 years ago
8 0
<span>a) All the 26m should be used to bent into a square to maximize the total area (= 42.25 m2) b) 1.4136m should be bent into a square and the rest (= 24.586m) should be bent into an equilateral triangle to minimize the total area (= 29.0835m2)</span>
You might be interested in
Location X is next to Location Y and they are both much colder than Location Z. Which statement is most likely true?
Dahasolnce [82]
Locations X and Y are at the poles. Hope this helps!
3 0
3 years ago
Mindy places a strip of zinc in a copper sulfate solution, as shown in the
mr Goodwill [35]

Answer:

C. The concentration of the copper sulfate is too low

Explanation:

8 0
3 years ago
Read 2 more answers
Correct Number Formats Numbers may be entered in several formats - including scientific notation and numerical expressions.
Illusion [34]

Answer:

a. Valid

b. Invalid

c. Invalid

d. Invalid

e. Valid

f.  Valid

g. Invalid

Explanation:

a.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

b.

It uses upper case E, instead of lower case e.

Therefore, it is <u>Invalid</u>

c.

It violates third rule for including unit.

Therefore, it is <u>Invalid</u>

d.

It violates the first rule. As, there is a space between 6 and e. While in the example given in question, there is no gap.

Therefore, it is <u>Invalid</u>

e.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

f.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

g.

It violates third rule for including unit.

Therefore, it is <u>Invalid</u>

6 0
3 years ago
Multiply.<br> (2x + 4)(x - 4)
sergij07 [2.7K]

Answer:

(2x + 4)(x - 4)=2x^2-4x-16

7 0
2 years ago
A rock with a mass of 540 g in air is found to have an apparent mass of 342 g when submerged in water. (a) What mass of water is
AleksandrR [38]

(a) 198 g

When the rock is submerged into the water, there are two forces acting on the rock:

- its weight, equal to W=mg (m=mass, g=acceleration of gravity), downward

- the buoyant force, equal to B=m_w g (m_w=mass of water displaced), upward

So the resultant force, which is the apparent weight of the rock (W'), is

W'=W-B

which can be rewritten as

m'g = mg-m_w g

where m' is the apparent mass of the rock. Using:

m = 540 g

m' = 342 g

we find the mass of water displaced

m_w = m-m'=540 g-342 g=198 g

(b) 1.98\cdot 10^{-4} m^3

If the rock is completely submerged, the volume of the rock corresponds to the volume of water  displaced.

The volume of water displaced is given by

V_w = \frac{m_w}{\rho_w}

where

m_w = 198 g = 0.198 kg is the mass of the water displaced

\rho_w = 1000 kg/m^3 is the density of the water

Substituting,

V_w = \frac{0.198}{1000}=1.98\cdot 10^{-4} m^3

And so this is also the volume of the rock.

(c) 2727 kg/m^3

The average density of the rock is given by

\rho = \frac{m}{V}

where

m = 540 g = 0.540 kg is the mass of the rock

V=1.98\cdot 10^{-4} m^3 is its volume

Substituting into the equation, we find

\rho = \frac{0.540 kg}{1.98\cdot 10^{-4}}=2727 kg/m^3

3 0
3 years ago
Other questions:
  • Match the following vocabulary terms to their definitions. 1. density a proposed explanation for a scientific problem 2. matter
    13·2 answers
  • The human ear canal is about 2.9 cm long and can be regarded as a tube open at one end and closed at the eardrum. What is the fu
    8·1 answer
  • Which of the following are equivalent unit?
    13·1 answer
  • If the speed of light in a vacuum is twice that of the speed of light in a given material, what is the index of infraction for t
    8·2 answers
  • Is the average speed related to the maximum or minimum speed of the person
    10·2 answers
  • The ratio of yellow bottles to green bottles is 3:7. If I have 50 bottles how many are yellow
    6·1 answer
  • a truck is traveling down the highway with a speed of 26 m/s. how long will it take the truck to stop (0m/s) if it's decelerates
    14·1 answer
  • Based on the ionic notation shown here, what has happened to this ion. ***List all that apply!!!*** Fe2+ *
    5·1 answer
  • A 75 kg man standing in a lift notices that a as the lift rises, the scale reads 825 n. What is the acceleration of the lift?.
    12·1 answer
  • What factor contributes most to the kinetic energy of a body in motion
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!