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Two speakers are driven by the same oscillator whose frequency is f. They are located a distance d from each other on a vertical pole. A man walks straight toward the lower speaker in a direction perpendicular to the pole, as shown in Figure P14.10.
(a) How many times will he hear a minimum in sound intensity? (Use f, d, and v as necessary.)
b) How far is he from the pole at these moments? Let v represent the speed of sound, and assume that the ground does not reflect sound. (Use f, d, v, and n as necessary where n = 1, 2, ..., nmax.)
A comet of mass 4.5 E22 kg moving at 10000 m/s collides withthe earth, initially at rest, and stick. Find the final speed of the earth
A very large box of doughnuts weighs 122 N on earth. (a) What is its mass (kg) on earth? (b) What is its weight (N) on Jupiter where the free-fall acceleration is 25.9 m/s2? (c) What is its mass (kg) on Jupiter?
Two charges, one of 2.50 µC and the other of -3.50 µC, are placed on the x-axis, Find the position on the x-axis where the net force on a small charge +q would be zero
1.two paths lead to the top of a big hill. one is steep and direct while the other is twice as long but less steep.
A projectile is fired from ground level at time t=0, at an angle θ with respect to the horizontal. Find the time it takes the projectile to reach its maximum height H
A 1.9 mol sample of hydrogen gas is heated at constant pressure from 302 K to 410 K. Calculate the energy transferred to the gas by heat.
A small 0.280-kg object moves on a frictionless horizontal table in a circular path of radius 4.30 m. The angular speed is 8.02 rad/s.what is the radius of the smallest possible circle on which the object can move
The nucleus of 8Be, which consists of 4 neutrons and 4 protons, is very unstable and spontaneously breaks into two alpha particles, Find the initial magnitude of the acceleration of the alpha particles due to this force
A Michelson interferometer is set up for microwaves. Initially the reflectors are located so the detector reads a maximum. Find the wavelength of the microwaves
To make a simple microscope a student places two converging lenses of +20 D at opposite ends of a 34 cm long tube. What is the tube length of the microscope
Find out the magnitude of the impulse delivered to a soccer ball when a player kicks it with a force of 1350 . Assume that the player's foot is in contact with the ball for 6.00×10-3.
An AC generator supplies 215 V peak voltage at 125 Hz frequency. How much power is dissipated in a resistor with R=165 ohms resistance connected to the generator
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