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a motor has coils with a resistance of 28 and operates from a voltage of 241 v when the motor is operating at its
because of dissipative forces the amplitude of an oscillator decreases 500 in 10 cycles by what percentage does its
a cord of length 12 m is fixed at both ends its mass per unit length is 11 gm and the tension is 11 na what is the
unpolarized light is incident on a linearly polarizing filter oriented 30 degrees with respect to the horizontal the
two microscope slides are stuck together and touching on one side where n12 and wedged open on the other where n15
a fiber optic cable has n14 in the center and n12 for cladding if a light pulse is incident along the cables axis what
a starship moving toward earth with a speed of 071c launches a shuttle craft in the forward direction the shuttle which
an rlc circuit with r 287 ohms 348 mh and 414 microfarads is connected to an ac generator with an rms voltage of 27
light of wavelength 0538 microm in air enters the water in a swimming pool the speed of light in water is 0700 times
the intensity of the sound wave from a jet airplane is 91 wm2 at a distance of 130 m at what rate does the jet airplane
the intensity of the sound wave from a jet airplane as it is taking off is 86 wm2 at a distance of 33 m what is the
calculate the capacitance of a capacitor whose plates a 200 cm by 30 cm and are separated by a 10mm air gapa what is
a solenoid has a diameter of 12cm when a current i exists in its winding a uniform magnetic field of magnitude b 30mt
in an experiment conducted at room temperature a current of 0820 flows through a wire 286 in diameterpart a find the
a sound wave with intensity 39 mwm2 interferes constructively with a sound wave that has an intensity of 12 mwm2 what
the longest string a thick metal wire on a particular piano is 30 m long and has a tension of 3000 n it vibrates with a
light visible to humans consists of electromagnetic waves with wavelengths in air in the range 400-700 nm 40 10-7 m to
a transverse wave on a string is described by the equation yx t 230 cm sin100 radst 18 radsxa what is the maximum
two waves with identical frequency but different amplitudes a1 40 cm and a2 10 cm occupy the same region of space are
a 30-cm-diameter parallel-plate capacitor with a 10 mm spacing is being charged at the rate of 075 cs what is the
a house has a floor area of 104 m2 and an outside wall that has an area of 32 m2 the earths magnetic field here has a
the upper surface of a cube of gelatin 50 cm on a side is displaced 064 cm by a tangential force if the shear modulus
an unknown material has a normal meltingfreezing point of -251deg c and the liquid phase has a specific heat capacity
a coin is located 279 cm to the left of a converging lens f 200 cm a second identical lens is placed to the right of
suppose that an ion source in a mass spectrometer produces doubly ionized gold ions au2 each with a mass of 327e-25 kg