# Question

Human adult blood contains, on average, 7000/mm3 white blood cells (leukocytes) and 250 000/mm3 platelets (thrombocytes). If a person has a blood volume of 5.0 L, estimate the total number of white cells and platelets in the blood.

## Answer to relevant Questions

The average number of hairs on the normal human scalp is 125 000. A healthy person loses about 65 hairs per day. (New hair from the hair follicle pushes the old hair out.) (a) How many hairs are lost in one month? (b) ...In the Tour de France, a bicyclist races up two successive (straight) hills of different slope and length. The first is 2.00 km long at an angle of 5o above the horizontal. This is immediately followed by one 3.00 km long at ...A certain material has a density of 9.0g/cm3. It is formed into a solid rectangular brick with dimensions 1.0 cm X 2.0 cm X 4.0 cm. (a) What is its mass in kilo-grams? (b) If you wanted to make a cube of this same material ...A car is traveling at a constant speed of on a circular track. Is the car accelerating? Explain. The location of a moving particle at a particular time is given by x = at – bt2, where and a = 10 m/s and b = 0.50 m/s2. (a) Where is the particle at t = 0? (b) What is the particle’s displacement for the time interval ...Post your question

0