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If one vibration has 5.4 times the energy of a second, but their frequencies and masses are the same, what is the ratio of their amplitudes?
A 480 kg car moving at 14.4 m/s hits from behind another car moving at 13.3 m/s in the same direction. If the second car has a mass of 570 kg and a new speed of 17.9 m/s, what is the velocity of th
A 1200 kg car moving at 15.6 m/s collides with a stationary car of mass 1500 kg If the two vehicles lock together, what is their combined velocity immediately after the collision?
A 4.80 kg block is suspended from a spring with k = 400 N/m. A 56.0 g bullet is fired straight up into the block from directly below with a speed of 162 m/s and becomes embedded in the block. (a) F
Suppose the rod is flipped around so the denser part is now at the origin. Calculate the new moment of intertia and compare to the value from part b and to a uniform rod.
The net electric flux through a sphere of radius R = 2 m is 15,000 Nm2/C. What is the net charge inside the sphere?
A circular coil has 200 turns, a radius of 3.0mm, and a current of 2.0A. If a proton is placed at the center of the coil and moves with a speed of 3.0 x 10^5 m/s towards the coil, what are the force
A small fly of mass 0.30 g is caught in a spider's web. The web vibrates predominately with a frequency of 3.4 Hz. What is the value of the effective spring stiffness constant "k" for the web, in N/m?
Superkid, finally fed up with Superbully\'s obnoxious behaviour, hurls a 1.95-kg stone at him at 0.547 of the speed of light. How much kinetic energy do Superkids super arm muscles give the stone?
To do this, the cowboy sets a timer on his craft that will start as he passes the buoy. He plans to cruise by the buoy at 0.471 c .How much time should he allow between passing the buoy and ejecting
What emf is induced in the small loop at t = 0.50 s? Take emf as positive if counterclockwise. Note that since the inner loop is small, you can assume that the B field due to the outer loop is unifo
A physicist on a planet orbiting the star Zog measures the intensity of the radiation reaching her to be 1370 W/m^2. If the orbit of her planet is circular with a radius of 2.3e8 km, what is the lumin
A radio trasmitter of frequency f0 is placed at a distance 7.61 e8 m from the center of Zog. Calculate the fractional change in frequency &Delta f/fo that would be observed a long distance from
An iron casting containing a number of cavities weighs 5.70E+3 N in air and 3.74E+3 N in water. What is the total volume of all the cavities in the casting? The density of iron (that is, a sample with
What is the pressure in the top floor pipe. Pressures are gauge pressures. Give your answer to the nearest tenth of a kPa.
What is the magnitude of the angular velocity of the rotation (in rad/s)
Determine the amplitude and relative phase of the steady state oscillations of the mass.
When the E sting of a guitar which has a frequency 330Hz is plucked, the sound intensity decreases by a factor of 2 after 4s. Determine a) the decay time and b) the quality factor Q.
Using visible light with a vacuum wavelength of 559 nm, what is the minimum necessary aperture diameter that a telescope must have so that it can resolve the planet and the star?
How far away from you is this car when its taillights appear to merge into a single spot of light because of the effects of diffraction?
A 0.420-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. (a) Find the momentum of the electron.
Show that the moment of inertia of the object about its center of mass and the period can be expressed as Icm=Md1d2 and T =2pi*sqrt(d1+d2/g), respectively.
Suppose that 50.007% (nearly half) of the electrons have a magnetic moment that points in one direction, while the rest of the electrons point in the opposite direction. What is the magnitude of the
A 286-g object is attached to a spring and executes simple harmonic motion with a period of 0.220 s. If the total energy of the system is 4.97 J, find the following.