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ankoles [38]
4 years ago
7

What’s the difference between red blood cells and white blood cells

Physics
2 answers:
Lerok [7]4 years ago
4 0
Red blood cells contain hermoglobin whiles white blood cells do not. Hermoglobin is what gives it its red color.
mixas84 [53]4 years ago
4 0
Red blood cells contain hermoglobin whiles white blood cells do not. Hermoglobin is what gives it its red color.
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The mechanical power output of an electric motor is 2.20 hp. The motor is connected to a 120 V source and is 89.0% efficient in
MatroZZZ [7]

Answer:

a) i = 15.367\,A, b) E = 25.226\,MJ, c) C = 0.771\,USD

Explanation:

a) Let assume that electric motor is single-phase and operates in DC-mode, so that mechanical power output is:

\dot W = \eta \cdot i \cdot V

The current delivered to the motor is:

i = \frac{\dot W}{\eta \cdot V}

i = \frac{(2.20\,hp)\cdot \left(\frac{0.746\,kW}{1\,hp}  \right)\cdot \left(\frac{1000\,W}{1\,kW}  \right)}{(0.89)\cdot (120\,V)}

i = 15.367\,A

b) The power delivered to the motor is:

\dot W = i\cdot V

\dot W = (15.367\,A)\cdot (120\,V)

\dot W = 1844.04\,W

The energy delivered to the motor during 3.80 hours of operation is:

E = (1844.04\,W)\cdot (3.80\,h)\cdot \left(\frac{3600\,s}{1\,h}\right)\cdot \left(\frac{1\,MJ}{1000000\,J}\right)

E = 25.226\,MJ

c) The cost to run the motor is:

C = (0.110\,\frac{USD}{kWh} )\cdot (25.226\,MJ)\cdot \left(\frac{0.278\,kWh}{1\,MJ}\right)

C = 0.771\,USD

3 0
3 years ago
Genes do not affect more than our physical characteristics<br> True<br> False
timurjin [86]
False


reason- they affect much more than physical appearance
8 0
3 years ago
A 300-n force acts on a 25-kg object. the acceleration of the object is?
Over [174]
To solve the answer use the equation: a = fnet / m

a = 300 N / 25 kg

300 N / 25 kg = 12m/s

The acceleration of the object is 12m/s

8 0
3 years ago
Read 2 more answers
A cube of gold weights1.89N when suspended in air from a spring scale. When suspended in molasses, it appears to weight 1.76 N.
Eddi Din [679]

smaller depending on friction and aiming of the gold cube

3 0
3 years ago
4. State in words how acceleration is calculated.
dimaraw [331]
You multiply force times friction
4 0
3 years ago
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