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The area of a typical eardrum is about 5.00 x 10-5 m2. (a) calculate the average sound power incident on an eardrum at the threshold of pain, which corresponds to an intensity of 1.00 W/m2. (b) How much energy is transferred to the eardrum exposed to this sound for 1.00 min?
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture? °C, What is the final temperature of the water after the ice has melted
A spherical brass shell has an interior volume of 1.33 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.77 x 10-3 m3. what is the volume of mercury that spills out of the hole
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 3 meters and a slope of 5 degrees with respect to the ground. What does this make the velocity of the box at the bottom
A second fragment, who's mass is 3.4 kg, moves away from the point of explosion with a speed of 418 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity.
A venturi meter is a device for measuring the speed of a fluid within a pipe. A gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0700 m2. The gas has a density of ? = 1.20 kg/m3.
1 a coil made of 5 loops of wire with a radius of 10.0 cm rotates about its diameter in a uniform magnetic field of
A hanging wire made of an alloy of aluminum with diameter 0.12 cm is initially 2.8 m long. When a 40 kg mass is hung from it, the wire stretches an amount 1.57 cm. A mole of aluminum has a mass of 27 grams, and its density is 2.7 g/cm3.
Two forces parallel to the x axis do 16.8 J of work on a small tray while moving it 17.5 m in the x direction across a gym floor. What is the other force
A moving particle encounters an external electric field thatdecreases its kinetic energy from 9820 eVto 7470 eV as the particle moves fromposition A to position B. The electric potentialat A is -51.0 V, and the electricpotential at B is +28.9 V.Deter..
in a physics lab experiment a spring clamped to the table shoots a 22 g ball horizontally. when the spring is
there are two balls located in deep space as shown in the figure. the black ball has mass 36kg and the red ball has
a small immersion heater can be used in a car to heat a cup of water for coffee or tea. assume the manufacturers claim
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