Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
a 100 w lightbulb is plugged into a standard 120 v outlet how much does it cost per month 30 days to leave the light
a potential difference of 480 v will be applied to a 4300 m length of 18-gauge copper wire diameter 00400inches
a nichrome heater dissipates 450 w when the applied potential difference is 110 v and the wire temperature is 700degc
an aluminum cylinder is suspended in an unknown fluid by a spring scale outside the fluid the object weighs 20n in the
a small rock with mass 012 is fastened to a massless string with length 080 to form a pendulum the pendulum is swinging
two conductors are made of the same material and have the same length conductor a is a solid wire of diameter 10 mm
calculate the temperature at which a tung- sten filament that has an emissivity of 025 and a surface area of 66times105
a 300- length of copper wire at 20 has a 120--long section with diameter 18 and a 180--long section with diameter 090
a pipe 0026 m in diameter and 022 m long can transfer 3476 j of heat per second with a temperature difference across
a student sits on a swivel seat initially the student is at rest holding a spinning bicycle wheel that has an angular
a thermopane window of area 68 m2 is constructed of two layers of glass each 54mm thick and separated by an air space
a rock group is playing in a bar sound emerging from the door spreads uniformly in all directions the intensity level
please answer both parts a and ba the decibel level of the noise from a jet aircraft is 130 db when measured 168 m from
a typical decibel level for a buzzing mosquito is 40 db and normal conversation is approximately 50 db how many buzzing
over 500 planets have so far been detected beyond our solar system this is accomplished by looking for the effect the
a baseball coach shouts loudly at an umpire standing 38 meters away if the sound power produced by the coach is 22
a 1000kg car moving 40ms skids to a stop during the skid the only force is the frictional force between the tires and
two cars collide at an intersection car a with a mass of 2000 kg is going from west to east while car b of mass 1400
a piano wire with mass 345 g and length 770 cm is stretched with a tension of 330 n a wave with frequency 100 hz and
ball 1 with a mass of 110 and traveling at 140 collides head on with ball 2 which has a mass of 320and is initially at
your favorite physics book total mass 24kg is pushed across the floor at a constant speed by a force of f 26n at an
a ring is fitted loosely with no friction around a long smooth rod of length l 0561 m the rod is fixed at one end and
steam can cause more serious burns than water at the same temperature here we want to examine this effect
suppose that youd like to find out if a distant star is moving relative to the earth the star is much too far away to
during an adiabatic process the temperature of 392 moles of a monatomic ideal gas drops from 485 oc to 205 oc for this