Answer:
(a) Current density at P is 
.
(b) Total current I is 3.257 A
Explanation:
Because question includes symbols and formulas it can be misunderstood. In the question current density is given as below;
where 
and 
unit vectors.
(a) In order to find the current density at a specific point <em>(P)</em>, we can simply replace the coordinates in the current density equation. Therefore
(b) Total current flowing outward can be calculated by using the relation,
where integral is calculated through the circular band given in the question. We can write the integral as below,
due to unit vector multiplication. Then,
where 
. Therefore
Every profession has its rules and regulations. The reason why we are directed not to touch the holder or discharge tube while the power to the supply to the gas tube is on because;
- The discharge tube can create about 5000 V of voltage when connected to power.
- The gas discharge tubes is often very hot when used with the power supplies and one should not to touch them until they are cooled down.
We have been taught to stay far was from a high voltage area or system and also we should not dare to touch it.
There are different reasons why we should about these high voltage system or are; The reason is that;
- Because high voltages often reduce the impedance of our skin, thereby making electricity to flow through our bodies.
Learn more about Voltage from
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Answer:
5
Explanation:
The sum of the digits of the number is ...
(4+1+3)+(4+6+5)+(7+8+9) = 8+15+24 = 47
The sum of those digits is 4+7=11, and those digits sum to 1+1 = 2.
That is, the value of the number mod 9 (or 3) is 2.
The ones digit is odd, so the value of the number mod 2 is 1.
This combination of modulo values tells you the mod 6 result is 5.
_____
<em>Additional comment</em>
We can look at the (mod2, mod3) values of the numbers 0 to 5:
0 ⇒ (0, 0)
1 ⇒ (1, 1)
2 ⇒ (0, 2)
3 ⇒ (1, 0)
4 ⇒ (0, 1)
5 ⇒ (1, 2) . . . . the mod {2, 3} results we have for the number of interest.
This process of adding up the digits repeatedly is referred to as "casting out 9s." The result of it is the modulo 9 value of the number (with 0 mapped to 9). Checking the mod 9 result of arithmetic operations is one quick way to spot certain kinds of errors. It can also be used as part of a divisibility test for 3 or 9.
The statements regarding the refrigeration system as expressed by the technicians are correct. Hence, the correct statement is Option c.
<h3>What is a refrigeration system?</h3>
Refrigeration systems are a crucial process in the industry and home applications as they carry out cooling or keep the room temperature at a preferred value.
The missing information in the question is:
A.technician A only
B.technician B only
C.both A and B
D.neither A or B
Hence, The statements regarding the refrigeration system as expressed by the technicians are correct. the correct statement is Option c.
Learn more about Refrigeration systems:
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Answer:
(b) Constant (minimum) volume
Explanation:
In the idealized Otto cycle there are 4 process that are
- Reversible adiabatic compression
- Addition of heat at constant volume
- Reversible adiabatic expansion
- Rejection of constant volume
So from above discussion we can see that heat is added when there is constant (minimum) volume which is given in option (b) so option (b) will be the correct answer
