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An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air.What is the intensity of the sound at the other end of the tube?What is the in
A wave of amplitude Ai and wave number ki is incident on the junction of two strings. If the wave number in the second string is kt = 2ki , find the amplitudes of the transmitted and reflected waves.
A moving 4.10 kg block collides with a horizontal spring whose spring constant is 260 N/m. The block compresses the spring a maximum distance of 15.00 cm from its rest position. The coefficient of kin
A 0.45 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 750 N/m) whose other end is fixed. The mass has a kinetic energy of 9.0 J as it pass
A 0.223 kg ball is thrown straight up from 1.81 m above the ground. Its initial vertical speed is 8.40 m/s. A short time later, it hits the ground.Calculate the total work done by the force of gravity
A car (m = 700.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 42.0 m.Find the average power the engine must deliver to reach a speed of 20.3 m/s at t
A point charge q1 = 4.00nC is located on the x-axis at x = 2.15m , and a second point charge q2= -6.95nC is on the y-axis at y = 1.05m .What is the total electric flux due to these two point charges t
Find the relationship between the length h and width a of a regular right triangular prism such that the prism is equally likely to land on each face when:A. dropped from a great height in th air. (ai
Consider a piston cylinder with 0.5 kg of R-134a as saturated vapor at -10oC. It is now compressed to a pressure of 500 kPa in a polytropic process with n=1.5.Find the final volume and temperature and
A series circuit has R=400 ohm, l=10 mh, c= 0.1 micro farad, and the frequency is 7960 hz , what is the power factor ?and how would you change the series circuit to make power factor unity. compute re
A yellow compound, dissolved in methylene chloride, is added to a chroma- tography column. The elution is begun using petroleum ether as the solvent. After 6 L of solvent have passed through the colum
If a hot air balloon floats at a constant elevation (it has reached equilibrium) where the local atmospheric pressure is 98 kPa (abs) and outside air temperature is 285 K, and the hot air inside the b
A double convex lens has 10cm and 15cm as its 2 radii of curvature. The image of an object placed 30cm from the lens is formed at 20 cm from the lens on the other side.Find the refractive index of the
A) At what distance from a 10W point source of electromagnetic waves is the electric field amplitude 120V/m ? B) At what distance from a 10W point source of electromagnetic waves is the electric
A simple Harmonic oscillator begins its motion from maximum positive displacement when a certain clock reads t=0.00s.The period of the simple harmonis oscillator is 2.00 s. When the given clock reads
A 0.55 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 850 N/m) whose other end is fixed.The mass has a kinetic energy of 17.0 J as it pass
A cord is used to vertically lower an initially stationary block of mass M = 15 kg at a constant downward acceleration of g/8.When the block has fallen a distance d = 5.5 m, find the work done by the
A velocity selector is used in a mass spectrometer to produce a beam of charged particles with uniform velocity.Suppose the fields in a selector are given by E?=(2.369?104V/m)x^ and B?=Byy^.
When a 45.0-V emf device is placed across two resistors in series, a current of 15.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel
A bare cubical reactor of side a = 314.16 cm is operating at a steady state power of 200 MW. If the origin is taken at the center of the reactor,and the reactor sides are parallel to the coordinate ax
Two vibrations at right angles to one another are described by the equations.x =10 cos(5pi(t)).y= 10cos(10pi(t)-i/3) \(undefined\).construct the Lissajous figure of the combined motion.
A 106 kg object moves in a horizontal straight line with an initial speed of 58 m/s. If it is stopped along that line with a deceleration of 2.00 m/s2.what magnitude of force is required?.What distanc
A closed, frictionless, piston-cylinder assembly contains 4 lbm of H20. Beginning with an initial volume of 10 ft^3, the H2O is compressed slowly until the volume has been reduced to 10 percent of the