The <em>mechanical advantage</em> of a machine determines its "usefulness." <em>(C)
</em>
Answer:
Explanation:
As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time
So we can say
now we have
here since magnetic field is constant so we have
now we have
now we have
Answer:
19 contraction cycles could theoretically be fueled by the complete combustion of one mole of glucose.
Explanation:
Complete Question
Assume that the complete combustion of one mole of glucose to carbon dioxide and water liberates 2870 kJ/mol.
One contraction cycle in muscle requires 67 kJ, and the energy from the combustion of glucose is converted with an efficiency of 45% to contraction, how many contraction cycles could theoretically be fueled by the complete combustion of one mole of glucose? Round your answer to the nearest whole number.
Complete combustion of glucose liberates 2870 kJ/mol.
Complete combustion of one mole of glucose will liberate 2870 × 1 = 2870 kJ
The energy from the combustion of glucose is converted with an efficiency of 45% to contraction.
So, the amount of energy from the combustion of one mole of glucose that is converted to contraction is
45% × 2870 = 1,291.5 kJ
One contraction cycle requires 67 kJ of energy, so, 1291.5 kJ will cause
(1291.5/67) contraction cycles = 19.28 contraction cycles = 19 contraction cycles to the nearest whole number.
Hope this Helps!!!
Answer:
Ex(P) = -3.602 x 10^6 N/C
Explanation:
- q2 = 2.6 μC = the net charge on the conducting shell
- inner radius of conducting shell = a = 2.2 cm =0.022m
- outer radius of conducting shell = b = 4.5 cm = 0.045m
1) To get Ex(P), the value of the x-component of the electric field at point P, located a distance 8.8 cm along the x-axis from q1 ;
Ex(P) = k(q1+q2)/r^2
= 9 x 10^9 (-5.7 + 2.6) x 10^-6 /0.088^2
Ex(P) = -27.9 x 10^3/ 0.007744
Ex(P) = -3.602 x 10^6 N/C
Answer:
clockwise from the south.
Explanation:
Given:
- velocity of the plane southwards,
- velocity of the wind in south-west,
- ∴Angle between the plane and wind velocities,
<u>According to the vector addition rule, magnitude of the resultant velocity is given as:</u>
is the plane's speed with respect to ground.
Direction of this resultant with respect to south:
clockwise from the south.