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a diffraction grating 15 mm wide produces the fifth order pie4 with light wavelength 650nm on the screen 80 mm away
the heating element of a simple heater consists of a 19-m-long 065-mm-diameter nichrome wire when plugged into a 120 v
a cable is 500 m long and has a diameter of 250cm a force of 10000 n is applied to the end of the cable if the maximum
a car with mass m traveling with speed v has a kinetic energy ke what is the kinetic energy of a second car that has
a copper washer is to be fit in place over a steel bolt both pieces of metal are at 297degc if the diameter of the bolt
a 30 m organ pipe is open at both ends and contains air the velocity of sound in air is 331 ms what is the wavelength
a what should be the length of an organ pipe open at both ends if the fundamental frequency is to be 2645 hzmb what is
a sound source radiates sounds uniformly in all directions the intensity of the sound at a distance of 100 m is 100 x
a piano tuner sounds two strings simultaneously one has been previously tuned to vibrate at 2920 hz the tuner hears 20
years ago a block of ice with a mass of about 20 kg was used daily in a home icebox the temperature of the ice was 00c
two waves with identical frequency but different amplitudes a1 60 cm and a2 30 cm occupy the same region of space are
a nichrome wire is used as a heating element in a toaster from the moment the toaster is first turned on to the moment
mercury has a mass mp 318 x 1023 kg an orbital period t 880 days and an orbital radius r 579 x 1010 m assume the
attenuation of ultrasound ultrasound is absorbed in the body this complicates the use of ultrasound to image tissues
find the speed of sound in a thin rod of cast iron which has a sheer modulus of 45 1010 pa and a density of 730 103
a television repairman needs a 100 ohm resistor to repair a malfunctioning set he is temporarily out of resistors of
an ordinary drinking glass is filled to the brim with water 2675 ml at 30deg c and placed on the sunny pool deck for a
a frictionless plane is 94 m long and inclined at 319 a sled starts at the bottom with an initial speed of 503 ms up
a cylinder in a car engine takes vi 450 10-2 m3 of air into the chamber at 30deg c and at atmospheric pressure the
you want to double the resonance angular frequency of a series r-l-c circuit by changing only the pertinent circuit
two 348-cm metal rods one made of copper and one made of aluminum are placed end to end touching each other one end is
a room is 20 ft 2in long and 12 ft 5 in wide and the ceiling is 12 ft 25 inches above the floor what is the volume of
helium is used to fill a balloon of diameter 31 cm at 23c and 15 atm the mass of a helium atom is 40026 u the
a for a circular coil of 10 turns radius 01 m and a total resistance of 10 ohm how much current is induced if a