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A certain fluid has a density of 1090 kg/m3 and is observed to rise to a height of 2.3 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.
The radar system at an airport broadcasts 11 microwaves with 150 of power. An approaching airplane with a 31 cross section is 24 away. suppose that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly..
Force F = (3.0 N) + (-9.0 N) acts on a pebble with position vector r = (1.00 m) + (-1.6 m) , relative to the origin. What is the resulting torque acting on the pebble
You are given a pendulum composed of a 0.038 kg mass on the end of a 0.6 m long massless string. compute the velocity of the mass as it passes through the vertical
During an acceleration, the angular speed of an engine increases from 850 rpm to 2750 rpm in 4.4 s. What is the average angular acceleration of the engine
An air puck of mass m1 = 0.32 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
Two objects (01 and 02) have equal ammounts of electric charge Q on each of them. each object is located in the same electric field, the electric , the electric field having a magnitude of e.
Two 52 g ice cubes are dropped into 230 g of water in a thermally insulated container. If the water is initially at 27°C, and the ice comes directly from a freezer at -21°C, what is the final temperature at thermal equilibrium
The biological activity of some organs can be investigated using radioactive isotopes. For example, iodine is important in the action of the thyroid. if the physical half life of is 194 hr, what is the biological half life of iodine in the bulk of ..
A 20kg box slides up a 12m long incline at an angle of 30 degrees with the horizontal. What is the change in gravitational potential energy
A golf club striking a golf ball imparts a force of2100N over a time of 5.06×10?3s at an angle of 35.0? above the horizontal. What maximum height does the golf ball achieve after impact
A solid conducting sphere with radius R carries a positive total charge Q . The sphere is surrounded by an insulating shell with inner radius R and outer radius 2R . The insulating shell has a uniform charge density rho.
White light, which is a mix of all visible wavelengths in the range of 400 nm to 700 nm, What is the thickness of the plate if the next wavelength for which there is constructive interference is 540.6nm
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