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Two speakers emit sound of identical amplitude and frequency, in phase with each other. The frequency is 415 Hz. If the speakers are 9.00 meters apart, and you stand on the line directly among them, 3.47 m from one speaker, are you standing closer to a point of constructive or destructive interference? (Use 343 m/s for the speed of sound.)
A flash light is at the bottom of a 2m deep pool. Find the critical angle of incidence for the light that is trapped or reflected back
a 5-microf capacitor is charged to 30 v and is then connected across a 10-microh inductor. the frequency of oscillation
A baseball bat is 1 meter long and is made of wood with density 525 kg/m^3. If the bat is held such that the point of rotation is 5.0 cm from the thin end, what is the rotational inertia of the bat
The tungsten filament in the 36 ohm bulb is 8 mm long and has a cross-sectional area of 2e-10 m^2. What is the magnitude of the electric field inside this metal filament?
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a g and air resistance is negligible, How high above its original point did the ball go
A 1320-kilogram car, moving with a speed of 15.0 m/s, is on a flat, circular curve having a radius of 57.0 meters. How much friction is required to keep the car on the road? What is the coefficient of friction between the road and the tires?
An Atwood's machine consists of blocks of masses m1 = 11.0 kg and m2 = 21.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 8.60 kg and radius r = 0.200 m. The block of mass m2 is allow..
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
A light bulb has a resistance of 270. It is connected to a standard wall socket (120 V rms, 60.0 Hz). Decide the rms current in the bulb. Determine the rms current in the bulb after a 19.5 µF capacitor is added in series in the circuit.
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 15.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective.
an airplane is flying in a horizontal circle at a speed of 510.6 kmh. the plane is banked for this turn its wings
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the vertical component of force produced by the wall
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