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To lift a wire ring of radius 1.95 cm from the surface of a container of blood plasma, a vertical force of 1.79 10-2 N greater than the weight of the ring is required. Calculate the surface tension of blood plasma from this information. N/m A certain fluid has a density of 1045 kg/m3 and is observed to rise to a height of 1.9 cm in a 1.0-mm-diameter tube. The contact angle between the wall and the fluid is zero. Calculate the surface tension of the fluid.N/m A straight horizontal pipe with a diameter of 1.0 cm and a length of 47 m carries oil with a coefficient of viscosity of 0.13 N · s/m2. At the output of the pipe, the flow rate is 8.3 10-5 m3/s and the pressure is 1.0 atmosphere. Find the gauge pressure at the pipe input.
atm
Given a spherical cell with outer radius R=6E-6 m, with thickness 5E-9 m. The potential difference across the membrane is -90 mV. Find potential energy stored within the membrane
A 4.80 long, 600 steel beams extends horizontally from point where it has been bolted to the framework of a new building under construction. A 75 construction worker stands at the far end of beam.
If you were standing on a spinning turntable holding barbells close to your chest, how would your spin be affected? Why?
A screen 1-m wide is 2.0 m from a pair of slits illuminated by 633-nm laser light, with the screen's center on the center line of the slits. How many fringes will be visible on the screen
If 5.0 moles of an ideal gas expands isothermally at 100 degrees C to 5.5 times its intial volume, then find heat flow into a system
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike the tree
Suppose a car is traveling at +20.4 m/s, and the driver sees a traffic light turn red. obtain the stopping distance of the car
A 2.0 cm tall candle flame is 1.8 cm from a wall. You happen to have a lens with a focal length of 36 cm . 1. How many places can you put the lens
A converging lens is placed 20.0 cm to the right of a diverging lens of focal length 5.0 cm. Calculate the focal length of the converging lens
A 45 kg girl is standing on a 130 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.33 m/s relative to the plank.
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
Find out the coefficient of static friction
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