Answer:
Explanation:
FIrst let c be the specific heat, now we need the heat that the device is able to provide:
so it is turned on for 5 minutes (300 seconds) with 25 Watts
Now heat is equal to the change in internal energy, where we will use the remaining terms.
Now we continue
where 
is the change of temperature ( 
)
now 
We solve 
now we just plot it for different values of M using any software..
please find attached the plot of the temperature.
The result indicates that as the mass increases it is harder for the system to reach higher final temperatures.
Answer:
(a) Electrons
Explanation:
When there is a current flow in a transistor of NMOS so it is because of electrons as in NMOS the current is flowing from drain to source. Since the flow of electrons is from source to drain. Also the current would be inverse direction for electrons flow
Therefore the option A is correct
hence, the other options are incorrect
Answer:
The main problem is the incorrect use of assignment operator, the correct way to check if two number are equal is
num1==num2
Explanation:
Here we have a created a simple function which takes two input arguments num1 and num2. In the body of the function we have used if condition to find out whether the two number are equal or not. If condition is true then print that values are equal. If condition is false then print that values are not equal. In the driver code, we have called the function two times with different values of num1 and num2 to check if it is working correctly.
The implementation logic is same in all these programming languages, the only difference the syntax.
Python Code:
def checkEquality(num1, num2):
if num1 == num2:
print("The values are equal.")
else:
print("The values are not equal.")
Driver Code:
checkEquality(2,5)
checkEquality(3,3)
Output:
The values are not equal.
The values are equal.
C++ Code:
void checkEquality(int num1, int num2) {
if (num1 == num2)
cout<<"The values are equal."<<endl;
else
cout<<"The values are not equal."<<endl;
}
Driver Code:
#include <iostream>
using namespace std;
void checkEquality(int num1, int num2);
int main()
{
checkEquality(2,5);
checkEquality(3,3);
return 0;
}
Output:
The values are not equal.
The values are equal.
Answer:
68.25 kJ
Explanation:
The thermal energy Q required to raise the temperature of 15kg gold from 45⁰ C up to 80⁰ C is Q = mcΔθ where m = mass of gold = 15 kg, c = specific heat capacity of gold = 130 J/kg°C and Δθ = temperature change = θ₂ - θ₁ where θ₁ = 45 °C and θ₂ = 80 °C
So, Q = mcΔθ = mc(θ₂ - θ₁)
= 15 kg × 130 J/kg°C × (80 °C - 45 °C)
= 1950 J/°C × 35 °C
= 68,250 J
= 68.25 kJ
When a force is applied to a member and it is pointed at a joint, the member is in compression. When a force is directed away from a joint that the member is attached to, it is said to be in tension.
<h3>What is
tension?</h3>
The pulling force transmitted axially by a string, rope, chain, or other similar object, or by each end of a rod, truss member, or other similar three-dimensional object, is referred to as tension in physics. Tension can also be described as the action-reaction pair of forces acting at each end of the aforementioned elements. Tension, the opposite of compression, is conceivable.
To measure tension as a transmitted force, an action-reaction pair of forces, or a restoring force, the International System of Units uses newtons (or pounds-force in Imperial units). At the point of attachment to the objects to which the string or rod is connected, the ends of a string or other object that transmits tension will exert forces in the direction of the string.
Learn more about tension
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