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a speaker fixed to a moving platform moves toward a wall emitting a steady sound with a frequency of 240 hertz a person
a virtual image of magnification 0375 is produced when an object is located in front of a spherical mirrora determine
when an object is placed 60 centimeter from a certain converging lens it forms a real image when the object is moved to
an astronomical telescope uses an eyepiece of power 80000 d if the length of the tube is 20125 meter find what is the
an archaeologist uses a converging lens to examine the details of a small article if the focal length of the lens is
a high-speed lifting mechanism supports a 870 kilogram object with a steel cable that is 340 meter long and 400 cm2 in
a pair of in-phase stereo speakers is placed side by side 080 meter apart you stand directly in front of one of the
an object is located 156 centimeter to the left of a thin diverging lens that has focal length 123 centimeter estimate
an object is located 245 centimeter to the left of a thin converging lens that has focal length 121 centimeter find the
the dipole moment of a water molecule is 604e-30 cm find what is the electric potential magnitude 109 nm from a water
sound 1 has an intensity of 39 wm2 sound 2 has an intensity level that is 2 db greater than the intensity level of
starting from rest two skaters push off against each other on smooth level ice where friction is negligible one is a
a particular wire has a resistivity of 621times10-8 m and a cross-sectional area of 204 mm2 a length of this wire is to
wires are not really ideal the voltage drop across a current-carrying wire can be important unless the resistance of
a heating element in a stove is designed to dissipate 2810 w of heat when it is connected to 200 v assuming that the
a small sphere that carries a charge of 725 c is whirled in a circle at the end of an insulating string the angular
which general pattern holds for various excited states in standing waves on a rope or string fixed at both ends1 more
the compressor of an air conditioner draws an electric current of 217 a when it starts up if the start-up time is 245 s
1 a 480-kg watermelon is dropped from rest from the roof of a 220-m -tall building and feels no appreciable air
a crate of mass 135 kg is being pushed with a person across a horizontal floor the coefficient of static friction among
a block of mass 30 kg lies on a horizontal surface the coefficient of static friction among the block and the surface
your spaceship lands on an unknown planet to decide the characteristics of this planet you drop a 100kg wrench from
an ideal gas is brought through an isothermal compression process the 400 moles of gas go from having an initial volume
a 130kg point mass and an 850kg point mass are held in place 500 cm apart a particle of mass m is released from a point
a given copper wire has a resistance of 507nbsp at 200degc while a tungsten wire of the same diameter has a resistance