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Two waves are traveling in the same direction along a stretched string. The waves are 90.0° out of phase. Each wave has amplitude of 4.00 cm. Discover the amplitude of the resultant wave.
The blade of a helicopter is rotating in a horizontal circle. Obtain the ratio of the centripetal acceleration at the end of the blade to that which exists at a point located 3.0 meter from the center of the circle
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
Rachel is on the roof of a building, h=15 memters above ground. She throws a heavy ball into the air with a speed v=2.6m/s at an angle 62 degree with respect to the horizontal. Find the speed of the ball when it hits the ground
A ball has a diameter of 3.90 cm and average density of 0.0845 g/cm3. What force is required to hold it completely submerged under water
What is the temperature of a sample of gas, when the average translational kinetic energy of a molecule in the sample is 8.01 × 10-21 J? What is the total translational kinetic energy, in kilojoules, of all the molecules of this sample, when it conta..
Only two forces act on a 3.0-kg mass. One of the forces is 9.0 N east, and the other is 8.0 N in the direction of 62° north of west. What is the magnitude of the acceleration of the mass
An electric field given by = 7.4· - 4.4(y2 4.7)· pierces a Gaussian cube of edge length 4.0 m, What net charge (in Coulombs) is enclosed by the Gaussian cube
A 1.4-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. compute the magnitude of the average resultant force on the ball
An airplane flying horizontally 3600 ft above the ground at 120mi/hh, drops relief aid on the ground. Resolve the angle between the vertical and the line joining plane and target at the instant when he package is released.
Waves from a radio station have a wavelength of 319 m. They travel by two paths to a home receiver 19.2 km from the transmitters. One path is a direct path, and the second is by re?ection from a mountain directly behind the home receiver.
A generator at a power plant produces a voltage of 9.00 kV and current 150 A. How much power is lost as waste heat in the transmission line
A string is 59.0cm long and has a mass of 3.00 g.A wave travels at 4.95m/s along this string. what is the speed of a wavealong the second string
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