Hydrogen.
Since most of the human body is water and water is H2O, there are twice as many Hydrogen atoms as there are Oxygen atoms.
The correct answer is B, sound waves are longitudinal with a medium
Answer:
A combination of longitudinal & transverse
Explanation:
Answer:
With the decreasing object mass, the acceleration will also decrease.
Explanation:
Newton's second law of motion infers the relation between force F, acceleration a and mass m of a body. It is expressed as:
F = ma
When force is constant, we get m α 1/a, that is mass is inversely proportional to the acceleration of the body.
Hence when object's mass decreases, the acceleration will increase. and vice versa
Answer:
The temperature of the windings are 60.61 °C
Explanation:
Step 1: Data given
Resistance = 50 Ω
Temperature = 20.0 °C
After the motor has run for several hours the resistance rises to 58Ω.
Step 2: Calculate the new temperature
Formula: R = Rref(1 + α(T-Tref))
⇒with α = temperature coëfficiënt of Cupper at 20 °C = 0.00394/°C
⇒with Tref = reference temperature = 20°C
⇒with T = end temperature = TO BE DETERMINED
⇒with R = resistance at end temperature = 58Ω
⇒with Rref = resistance at reference temperature = 50 Ω
==> T = (R/Rref - 1)/α + Tref
T = (58/50) - 1 )/ 0.00394 + 20
T = 60.61 °C
The temperature of the windings are 60.61 °C
