At a resting pulse rate of 79 beats per minute, the human heart typically pumps about 67 ml of blood per beat. blood has a denstity of 1060 kg / m3. circulating all of the blood in the body through the heart takes about 1 min for a person at rest. (a) how much blood is in the body? give answer in cubic meter(m3) (b) on average, what mass of blood does the heart pump with each heart beat? give answer in kilograms (kg).
hint:
1000ml=1l
1000l=1m^3(cubic meter)

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: