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A 25 g glass tumbler contains 340 mL of water at 24°C. If four 20 g ice cubes each at a temperature of -3°C are dropped into the tumbler, what is the final temperature of the drink? Neglect thermal conduction between the tumbler and the room.
The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36.0 Km/s. The second star, Beta, has an orbital speed of 12.0Km/s. What is the mass of the star Alpha
What is the average magnitude of the Poynting vector 8.50 mi from a radio transmitter broadcasting is otropically (equally in all directions) with an average power of 260 kW?
Why is the following situation impossible? A freight train is lumbering along at a constant speed of 16.0m/s. Behind the freight train on the same track is a passenger train travelling in the same direction at 40.om/s.
Lithium hydride, 7LiH, is a potential fuel for fusion reactors because it is one of the few compounds of very light elements that exists as a solid, and is therefore more dense than gaseous fuels even under extreme conditions
A 0.12-kg ball is placed in a shallow wedge with an opening angle of 120°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless. Find contact force o..
A 230g baseball is pitched at 42m/s spinning at 40rad/s . You can treat the baseball as a uniform solid sphere of radius 4.0cm
An arrow is shot from a height of 1.9 m toward a cliff of height H, what is the height of the cliff in meters and what is the max height of the arrow along its trajectory in meters
A particle with a charge of -9 x 10-6C and a mass of 13 g moves uniformly with a speed of 4.6 m/s in a circular orbit around a stationary particle of charge 1 x 10-6C
A 40 g rifle bullet travelling 260 m/s buries itself in a 4.0 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of pendulum's displacement.
The index of refraction for violet light in silica flint glassis 1.66, and that for red light is 1.62. What is the angulardispersion of visible light passing by an equilateral prism ofapex angle 60.0° if the angle of incidence is 50°.
A 0.015 kg record with a radius of 15 cm rotates with an angular speed of 33(1/3) rpm. Find the angular momentum of the record
A 275 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40. a)Calculate the force exerted by the man. b..
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