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Viewed Questions

A bug on the surface of a pond is observed to move up and down a total vertical distance of 0.12 m, lowest to highest point, as a wave passes. ($a$) What is the amplitude of the wave? ($b$) If the amplitude increases to 0.16 m, by what factor does the bug's maximum kinetic energy change?

A bug on the surface of a pond is observed to move up and down a total vertical distance of 0.12 m, lowest to highest point, as a wave passes. ($a$) What is the amplitude of the wave? ($b$) If the amplitude increases to 0.16 m, by what factor does the bug's maximum kinetic energy change?

Physics: Principles with Applications

Calculate the maximum acceleration of a car that is heading up a $4^{\circ}$ slope (one that makes an angle of $4^{\circ}$ with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved- that is, the tires are not allowed to slip during the acceleration. (lgnore rolling.) (a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that $\mu_{\mathrm{s}}=0.100$ , the same as for shoes on ice.

Calculate the maximum acceleration of a car that is heading up a $4^{\circ}$ slope (one that makes an angle of $4^{\circ}$ with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved- that is, the tires are not allowed to slip during the acceleration. (lgnore rolling.) (a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that $\mu_{\mathrm{s}}=0.100$ , the same as for shoes on ice.

College Physics for AP® Courses

Questions asked

ANSWERED

Supratim Pal verified

Numerade educator

An electron with speed v0 = 5.64×106 m/s is traveling parallel to an electric field of magnitude E = 8800 N/C .

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ANSWERED

Eduard Sanchez verified

Numerade educator

The amplitude of a sound wave is made 2.3times greater. By what factor will the intensity increase, and how many dB will the sound level increase?

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ANSWERED

Penny Riley verified

Numerade educator

Assume the amplitude of the wave is 0.59m, the wave length is 2.5m and the period is 3.2s. Estimate the area of the chest as (0.30m)^2. Estimate the average power of a Moving water wave that strikes the chest of an adult standing in the water at the seashore.

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ANSWERED

Penny Riley verified

Numerade educator

A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. It takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.680 m. The fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. How fast are the waves traveling? What is the amplitude A of each wave?

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ANSWERED

Penny Riley verified

Numerade educator

A cord of mass 0.75kg is stretched between two supports 7.9m apart. If the tension of the cord is 120 N, how long will it take a pulse to travel from one support to the other?

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ANSWERED

Penny Riley verified

Numerade educator

Two earthquake waves of the same frequency travel through the same portion of the earth, but the second is carrying 6.0 times the energy for the first. What is the ratio of the amplitude of the two waves?

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Penny Riley verified

Numerade educator

A sailor strikes the side of his ship just below the surface of the sea. He hears the echo of the wave reflected from the ocean floor directly below 3.0 s later. How deep is the ocean at this point? Assume the bulk modulus of water is Bwater=2.0x10^9 N/m2. The density of the water is 1.25 x10^3 kg/m3.

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ANSWERED

Chasen Shaw verified

Numerade educator

An object of unknown mass m is hung from a vertical spring of unknown spring constant k, and the object is one served to be at rest when the spring has stretched by 25cm. The object is then given a slight push upward and executes SHM. Determine the period T of this oscillation.

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ANSWERED

Chasen Shaw verified

Numerade educator

The springs of a 1500kg car compresses 5.2mm when it’s 69kg driver gets into the drivers seat. If the car goes over bump, what will be the frequency of a oscillations?

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ANSWERED

Ashar Tanveer verified

Numerade educator

A block of mass m is attached to the end of a spring. The mass is given an initial displacement x0 from equilibrium and an initial speed v0. Ignoring friction and the mass of the spring , use energy methods to find its maximum speed in terms of the given quantities. Find its maximum stretch from equilibrium in terms of the given quantities.

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