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A sound wave with intensity 39 mW/m2 interferes constructively with a sound wave that has an intensity of 12 mW/m2. What is the intensity of the superposition of the two?
A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power, Find the current in the motor
A 4 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4? ?0) = 8.99 × 10^9 N·m2/C2 and the acceleration due to gravity g = 9.81 m/s2.
A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. What resistance should be used in the charging circuit if the wipers are to operate once every 1.40 s
A current with sinusoidal time-dependence, whose peak value is 5.55 A and frequency is 775 cycles per second, Calculate the average power dissipated by the loop, if its resistance is 64.3
Water is in the big beaker. Scale 1 reads 87 newtons, scale 2 reads 948 newtons, and scale 3 reads 0 newtons. The hanging block has a density of 10 × 10^3 kg/m3. To the nearest tenth of newton what does scale 1 read after the block is fully lowere..
A test tube contains 2.56 10-4 m3 of liquid carbon tetrachloride at a temperature of 75.5° C. Find the volume of carbon tetrachloride in the test tube at -11.7° C
A vertical tube open at the top contains 5.2 cm of oil (density 0.82 g/cm^3) floating on 5.2 cm of water. Find out the gauge pressure at the bottom of the tube.
The pressure of a garden hose is 2 atmospheres. If the cross-sectional area of the hose is 4 cm^2 and the nozzle output area is .4cm^, How fast does the water leave the hose
A wheel (mass = 7.54 kg, radius = 16.8 cm) rolls, without slipping, down the side of a hill. How much energy does the wheel lose to friction
The anomalous Zeeman effect is studied in an advanced student laboratory. A spectral lamp is filled with the vapor of an unknown atom. What is the energy difference between the levels
Find out the resulting values of the processional rate
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