Answer:
The beliefs of communism, most famously expressed by Karl Marx, center on the idea that inequality and suffering result from capitalism. Under capitalism, private business people and corporations own all the factories, equipment and other resources called "the means of production." These owners, according to communist doctrine, can then exploit workers, who are forced to sell their labor for wages. This is what the government most likely would be worried about. Because economic freedom means growth of private business owners which also means exploitation of workers.
B) The field around a solenoid is termed a bar magnet.
C) A solenoid is created by winding current carrying wire into a coil.
D) Increasing the current in the wires will reduce the magnetic field outside of the solenoid.
Answer;
C) A solenoid is created by winding current carrying wire into a coil.
Explanation;
-A solenoid is a coil of insulated or enameled wire wound on a rod-shaped form made of solid iron, solid steel, or powdered iron.
-Solenoids have a wide range of applications, for instance they are used as electromagnets, as inductors in electronic circuits, and as miniature wireless receiving antennas.
Answer:
The position of the object is
Explanation:
I add a picture of the situation in order to explain the question.
We are going to state the ''zero'' on a horizontal line. Then, we are going to state as positive the sense from left to right.
Now, if the object moves 14 units to the left , we need to subtract to the original position 14 units (because it will be a negative move given that the object is moving to the left) ⇒
It new position will be at .
In general, the first step to solve this kind of exercises is to set a reference system. Then, it is very important to draw the situation.
-2 is the right answer
Answer:
81.29 m/s
Explanation:
Given:
60°C = 333 K is cp = 1.007 kJ/kg·K.
at air inlet:
Pressure = 100 kPa
Temperature = 30°C
Velocity = 357 m/s
at air outlet:
Pressure = 200kPa
Temperature = 90°C
We can define the energy balance as:
- = Δ = 0
therefore, =
m + m =m + (taking m common and cancelling it)
4 + = +
The velocity at the exit of a diffuser:
= [ + 2 ( - )
= [ + 2 x 1000 x 1.007 x (30-90)
= 81.29 m/s
therefore, the velocity at the exit of a diffuser is 81.29 m/s
Answer:
Exit velocity = 498.3m/s
Explanation:
The energy balance for the system is given by:
Ein - Eout = ◇Esystem
Ein = Eout
Therefore
m' (h1 + V1^2/2) = m' (h2 + V2^2/2)
h1 + V1^2/2 = h2 + V2^2/2
The exit velocity will be:
V2 = [V1^2 + 2(h1 - h2)^0.5 = [V1^2 + 2(cp(T1 - T2)]^0.5
But cp = 1.007kJ/kg
V2 = [(357)^2 + 2(1.007)(90-30)(1000m^2/s^2)]^0.5
V2 = [127449 + 120840]^0.5
V2 = [248289]^0.5
V2 = 498.3m/s
The potential difference between the center of the sphere and the surface of the sphere will be PD=3.6 x 10^8 V
It is given that:-
Charge Q = +4.00 mC or
insulating sphereradius R = 5.00 cm = 0.05 m
The formula for the potentialdifference at the surface of the sphere is given by
The formula for the potentialdifference at the center of the sphere
The difference between the potential difference will be
Thus the potential difference between the center of the sphere and the surface of the sphere will be PD=3.6 x 10^8 V
To know more about Charge follow
Answer:
3.6 x 10^8 V
Explanation:
Q = 4 m C = 4 x 10^-3 C
r = 5 cm = 0.05 m
The formula for the potential at the surface is
Vs = K Q / r = (9 x 10^9 x 4 x 10^-3) / 0.05 = 7.2 x 10^8 V
The formula for the potential at the centre is
Vc = 3/2 Vs
Vc = 1.5 x 7.2 x 10^8 V = 10.8 x 10^8 V
The difference in potential is
V = Vc - Vs = 10.8 x 10^8 - 7.2 x 10^8 = 3.6 x 10^8 V
Increase the friction between its moving parts.
Reduce the friction between its moving parts.
Redefine the machine’s system boundaries.
Based on the law of conservation of energy, we know that we can't create energy, machines can only convert one type of energy into another. So, if we want to improve a machines ability then we need to reduce it's loss energy (part of energy which is useless).
"The law of conservation of energy states that the amount of energy is neither created nor destroyed. For example, when you roll a toy car down a ramp and it hits a wall, the energy is transferred from kinetic energy to potential energy."
"Energy is defined as the “ability to do work, which is the ability to exert a force causing displacement of an object.” Energy is just the force that causes things to move. Energy is divided into two types: potential and kinetic.
Know more about energy here
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B) liquid phase
C) solid, liquid and gas phases
D) no phases are present at this point
Answer:
The answer is C) solid, liquid and gas phases
Explanation:
This point is called the triple point bc solid, liquid, and gas phases can exist together.
hope this helps :)