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(a) Calculate the mass flow rate (in grams per second) of blood (Ï = 1.0 g/cm3) in an aorta with a cross-sectional area of 2.0 cm2 if the flow speed is 47 cm/s.
g/s
(b) Assume that the aorta branches to form a large number of capillaries with a combined cross-sectional area of 3.0 multiplied by 103 cm2. What is the flow speed in the capillaries?
cm/s
A point charge is moved in an electric field. The potential changes from -87 V to +30 V between the initial and final position. The work done by the electric field is 156 J
An object is located 8.00 cm from a converging lens that has a focal length of 10.0 cm. The height of the object is 0.41 cm. What is the height hi of the image
A 45kg figure skater is spinning on the toes of her skates at 1.2rev/s . Her arms are outstretched as far as they will go. What is her new rotation frequency, in revolutions per second
A 2.00×10-2- cube of ice at an initial temperature of -19 is placed in 0.670 of water at 44.0 in an insulated container of negligible mass.
To keep a door closed, a wooden stick is wedged between the floor and the doorknob. The stick exerts at B a 45-lb force directed along line AB. Swap that force with an equivalent force-couple system at C.
Steel train rails are laid in 12.2m -long segments placed end to end. The rails are laid on a winter day when their temperature is -2.00 oC. what is the stress in them on a summer day when their temperature is 33.0 oC
estimate the speed of the car just before braking. how much time passes before the brick lands on the ground..
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
A 0.289-kg coffee mug is made from a material that has a specific heat capacity of 990 J/kg C° and contains 0.304 kg of water. determine the minimum power rating of this heater
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B. Determine the charge of the particle
A dish antenna with a diameter of 22.8 m receives (at normal incidence) a radio signal from a distant source, find the intensity of the radiation received by the antenna
The pressure of sulfur dioxide (SO2) is 2.89 x 104 Pa. Find the translational rms speed of the sulfur dioxide molecules
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