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A 4-cm-diameter horizontal stationary water jet having a velocity of 50 m=s strikes a cone having an included angle at the apex of 60-. The water leaves the cone symmetrically. Determine the force needed to hold the cone if
(a) it is stationary
(b) it moves away from the jet at 20 m=s
(c) it moves into the jet at 20 m=s
a boat has a mass of 6800 kg. its engines generate a drive force of 4400 n due west while the wind exerts a force of
Bob and Joe are each making a 500 mile trip. Bob leaves at noon and drives 65mph uniformly. Joe leaves at12:40 pm. Find how fast does Joe have to drive (uniformly) to get to the end of the trip at the similar time Bob does
A 220g ball is thrown horizontally at 19.2m/s, As it falls under the influence of gravity, find its final momentum (magnitude) after 1.00s.
A charge of q = +10-7 C is uniformly distributed on a spherical shell of radius 12 cm. What is the electric potential at the center of the shell
it is important for nuclear engineers to know the thermal properties of neutrons in a nuclear reactor. assuming a gas
There is a uniform magnetic field present, given by B=0.003 i + 0.004 j + 0.002 k, where i,j,k are the unit vectors along the cartesian coordinate axes in units of Tesla. Compute the y-component of the magnetic force acting on a segment of wire of..
Legend has it that, many centuries ago, Archimedes jumped out of his bathtub and ran across town naked screaming "Eureka!" after he solved an especially difficult problem.
Suppose you use the tip of one finger to support a 1.0 kg object. If your finger has a diameter of 2.0 cm, what is the stress on your finger?
Using the symmetry of the arrangement, decide the direction of the electric field at the center of the square at the location of charge q in the figure below, given that qa = qb = –2.65 ?C and qc = qd = 2.65 ?C. Compute the magnitude of the electric ..
Both ends of a glass rod with index of refraction 1.60 are ground and polished to convex hemispherical surfaces. Determine is the object for this surface real or virtual
A car travels at a constant speed around a circular track whose radius is 2.6 km. compute the magnitude of the centripetal acceleration of the car
This is because of the average release of about 0.03 J per kilogram each year. Show that at 500 C increase in temperature for a thermally insulated chunk of granite takes about 13.3 million years. (Assume that the specific heat of capacity c of g..
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