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A 184.0 g piece of lead is heated to 80.0oC and then dropped into a calorimeter containing 681.0 g of water that initally is at 18.0oC. Neglecting the heat capacity of the container, find the final equilibrium temperature (in oC) of the lead and water.
Calculate the x component of the velocity of the particle.
The owner of a van installs a rear-window lens that has a focal length of -0.299 m. When the owner looks out through the lens at a person standing directly behind the van, How tall is the person
Three equal point charges, each with charge 1.35 mu C, are located at the vertices of an equilateral triangle whose sides are of length 0.60m. What is an electric potential energy U of the system? (Take as zero the potential energy of the three ch..
Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 50 N. If he does 4 x 10^2J of work on the sled while exerting the force horizontally, through what distance must he have pushed it.
A child throws a ball with an initial speed of 8:00m/s at an angle of 40 degrees above the horizontal, what is the magnitude of the ball's velocity just before it hits the ground
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. Each lab group is challenged to determine the heaviest rock that can be placed in the bottom of a plastic boat without sinkin..
What is the direction of the first ball after the collision? obtain the direction as an angle south of east.
What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
The He-Ne laser shines through a slit in the diffraction plate that is 50 cm from the screen. What fringe spacing would you expect for slits E and F if the stated slit spacing is correct? What difference must there be between the patters produced ..
What is the muzzle velocity
A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.24 102 m/s from the top of a cliff 126 m above level ground, What is the initial total mechanical energy of the projectile
An alpha particle and beta^ {-} particle, each with kinetic energy 35 {rm keV}, are sent through a 1.10 {rm T} magnetic field. The particles move perpendicular to the field. Find the curvature radius for alpha particle's trajectory. Hint: The kine..
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