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3 years ago

1. Summarize What are the four conditions of apurely competitive market?

Physics

1 answer:

bearhunter [10]3 years ago

5 0

Answer:

Explanation:

1. Many buyers and sellers participate in the market.

2. Sellers offer identical products.

3. Buyers and sellers are well informed about products.

4. Sellers are able to enter and exit the market freely.

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If pressurized air pressure is 350 kPa, atmospheric pressure is 100 kPa, initial atmospheric pressure is 100 kPa, initial accele

Travka [436]

Answer:

$d=8.657mm$

Explanation:

From the question we are told that

Pressurized air pressure is $P_{air}=350 kPa,$

Atmospheric pressure is $P_a=100 kPa$

Initial acceleration of the water rocket is $a_i=0.5g.$

Acceleration of the water rocket is $a_r=0.5g$

Mass of water is $M_w=0.5 kg$

Generally total mass is given mathematically given as

$T_M=0.5+0.5=>1kg$

Generally the tension on the rocket is given mathematically given as

$T=(P_{air}-P_a)A$

$T=(350-100) \frac{\pi d^2}{4}$

T is also

$T=\frac{3Mg}{2}$

Therefore

$T=>(350-100) \frac{\pi d^2}{4}= \frac{3Mg}{2}$

$T=>(350-100) \frac{\pi d^2}{4}= \frac{3*1*9.81}{2}$

$d^2= \frac{3*1*9.81*4}{2(350-100) \pi}$

$d=\sqrt{\frac{3*1*9.81*4}{2(350-100) \pi}}$

$d=8.657mm$

therefore diameter of nozzle is mathematically given as

$d=8.657mm$

8 0

3 years ago

Titanium is a metal used to make golf clubs. A rectangular bar of this metal measuring 1.96 cm x 2.19 cm x 2.63 cm was found to

masha68 [24]

$4.012\frac{gr}{cm^3}$

Explanation

the density of an object is given by:

$\text{Density(d)}=\frac{mass(m)}{\text{volume(v)}}$

Step 1

find the volume of the bar

a)find the volume of the rectangular bar.

the volume of a rectangular prism is given by:

$\text{Volume}=\text{ length}\cdot widht\cdot depth$

replace

$\begin{gathered} \text{Volume}=(\text{ 2.63}\cdot2.19\cdot1.96)(cm^3) \\ \text{Volume}=11.289012(cm^3) \end{gathered}$

Step 2

now,

Let

$\begin{gathered} \text{Volume}=11.289012(cm^3) \\ \text{mass}=\text{ 45.3 gr} \end{gathered}$

replace in the formula

$\begin{gathered} \text{Density(d)}=\frac{mass(m)}{\text{volume(v)}} \\ d=\frac{45.3\text{ gr}}{11.289012(cm^3)} \\ d=4.012\frac{gr}{cm^3} \end{gathered}$

therefore, the answer is

$4.012\frac{gr}{cm^3}$

I hope this helps you

4 0

2 years ago

A heterogeneous mixture _____.

defon

Has an uneven distribution of parts throughout the whole mixture

7 0

4 years ago

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Was work done on a book that fell from a desk to the floor? If so, what force was involved?

IgorLugansk [536]

Sure !
The work is (weight of the book) x (height of the desk above the floor).
The force (weight) is the result of gravity.
It was gravity that did the work.

7 0

3 years ago

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If the torque required to loosen a nut that is holding a flat tire in place on a car has a magnitude of 33 N · m, what minimum f

Setler [38]

Answer:

The minimum force that must be exerted by the mechanic at the end of a 30 cm-long wrench to loosen the nut is 110N

Explanation:

Torque = Fd sin θ

For a torque, the minimum force must be applied perpendicular to the lever arm, so that θ = 90° and sin θ = sin 90° = 1

Torque = 33 N.m

F = Force applied = ?

d = 30 cm = 0.3 m

F = Torque/d = 33/0.3 = 110 N

8 0

4 years ago

Read 2 more answers

1. Summarize What are the four conditions of apurely competitive market?​

1. Summarize What are the four conditions of apurely competitive market?