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A point source of light is 145.0 cm below the surface of a body of water. Discover the diameter of the circle at the surface through which light emerges from the water in meters.
a swimmer heads directly across a river swimming at 1.5 ms relative to the water. she arrives at a point 42 m
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
A lens for a 35mm- camera has a focal length given by = 51mm, What is the magnification of the image on the film
A basketball player is balancing a spinning basketball on the tip of his finger. The angular displacement of the ball, in radians is
an 80.0 kg skydiver jumps out of a balloon at an altitude of 1000m and opens the parachute at an altitude of 200m. what is the speed of the diver when he lands on the ground
A horizontal spring-mass system has low friction, spring stiffness 155 N/m, and mass 0.6 kg. What is the maximum stretch during the motion
a large boulder is ejected vertically upward from a volcano with an initial speed of 40.7 ms. air resistance may be
A 100-W electric-resistance heater inside the tank is energized for 10 minutes. Calculate the mass of CO2 in the tank and the temperature and pressure in the tank at the end of the 10 minutes period
A rocket of total mass 3180 kg is traveling in outer spacewith a velocity of 115 m/s toward the Sun. how much mass must be expelled
A 12 kg object oscillates at the end of a vertical spring that has a spring constant of 1.70 x10^4 N/m. The effect of air resistance is represented by the damping coefficient b = 3N•s/m. Find the time interval that elapses while the energy of the ..
A thin soap film (n = 1.35) is suspended in air. The spectrum of light reflected from the film is missing two visible wavelengths of 490.8 nm and 589.0 nm, What is the thickness of the soap film
A constant volume gas thermometer is used to measure thetemperature of an object. What is the temperature of the object
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