Answer : 9.36ohms/ temperature
Explanation:
Expression for the variation of resistance of platinum with temperature
Rt= Ro(1+*t)
Rt= resistance @ t°C
Ro= resistance @ 0°C
*= temperature coefficient of resistance
Calculate the change in resistance by putting 120ohms for Ro,
0.0039/K for *
20°C for t
Using this formula:
Rt = Ro(1+*t)
Rt- Ro = Ro*t
= (120ohms)(0.0039/K)(20°C)
= 9.36ohms/K
Answer:
Some AI could end up taking the jobs of many humans.
Explanation:
Their intelligence exponentially grows and human intelligence grows gradually, causing more ideas and better work efficiency from AI.
Answer: 0.93 mA
Explanation:
In order to calculate the current passing through the water layer, as we have the potential difference between the ends of the string as a given, assuming that we can apply Ohm’s law, we need to calculate the resistance of the water layer.
We can express the resistance as follows:
R = ρ.L/A
In order to calculate the area A, we can assume that the string is a cylinder with a circular cross-section, so the Area of the water layer can be written as follows:
A= π(r22 – r12) = π( (0.0025)2-(0.002)2 ) m2 = 7.07 . 10-6 m2
Replacing by the values, we get R as follows:
R = 1.4 1010 Ω
Applying Ohm’s Law, and solving for the current I:
I = V/R = 130 106 V / 1.4 1010 Ω = 0.93 mA
Answer:
// The method is defined with a void return type
// It takes a parameter of integer called numCycles
// It is declared static so that it can be called from a static method
public static void printShampooInstructions(int numCycles){
// if numCycles is less than 1, it display "Too few"
if (numCycles < 1){
System.out.println("Too few.");
}
// else if numCycles is less than 1, it display "Too many"
else if (numCycles > 4){
System.out.println("Too many.");
}
// else it uses for loop to print the number of times to display
// Lather and rinse
else {
for(int i = 1; i <= numCycles; i++){
System.out.println(i + ": Lather and rinse.");
}
System.out.println("Done");
}
}
Explanation:
The code snippet is written in Java. The method is declared static so that it can be called from another static method. It has a return type of void. It takes an integer as parameter.
It display "Too few" if the passed integer is less than 1. Or it display "Too much" if the passed integer is more than 4. Else it uses for loop to display "Lather and rinse" based on the passed integer.
Answer:
ALL CAREFULLY ANSWERED CORRECTLY
Explanation:
1) A loaf of Bread PHYSICAL SYSTEM
✓ How can the environment affect the edibility of the bread
✓ What are the constituents that makes up the bread
✓ What process is involved in these constituents mixing to form the loaf.
2) The law of thermodynamics makes us to understand that when heat/energy passes through a system, the systems internal energy changes with respect to the conservation of energy law. That is energy lost = energy gained. Typically, ice would melt in a cup of hot tea because of the thermal energy in the molecules of the hot tea. When you heat a material, you are adding thermal kinetic energy to its molecules and usually raising its temperature. The temperature of the ice raises due to the kinetic energy added to it and it melts to water.
3) The theory of systems view the world as a complex system of interconnected parts. If we consider the society; (financial systems, political systems, etc) we will agree that they individually have their own components and it's the summation of this components that makes the system, this implies that system thinking could be applicable in this kinda of systems as long as they are made up of components.
4) Technology has boosted every sector of our lives and it has the capacity to do more. Restricting it's importance to entertainment alone would be an underusing of its potentials. Engineering students infact should not need any drive to be encouraged about maximizing all it can do in shaping our world.
5) ~ Nature shows its splendid soul
~Never ceases to leave us in amazement
~And we are in love
