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a boat traveling at a speed of 12kmh takes 36 minutes to travel 9 km down a rivera what is the speed of the riverb how
what mass of steam at 100 degrees celcius must be mixed with 165g of ice at its melting point in a thermally insulated
a piece of plastic has a net charge of 200 uc how many moreprotons than electrons does this piece of plastic
a -42 nc charge is distributed uniformly along the x-axis from x -11 m to x 2 m consider a point at y 22 m on the
a block of mass m1 175 kg and a block of mass m2 590 kg are connected by a massless string over a pulley in the shape
the magnetic field produced by an mri solenoid 30m long and 18m in diameter is 16t find the magnitude of the magnetic
a 041t magnetic field is perpendicular to a circular loop of wire with 54 turns and a radius of 16cm if the magnetic
a record breaking steam powered car needs to turn 525 liters of water into steam every minute what power heater is
an engine absorbs 168 kj from a hot reservoir at 277degc and expels 123 kj to a cold reservoir at 27degc in each cyclea
a 450-n force stretches a vertical spring0250 ma what mass must be suspended form the spring so that the system will
an electron moving through an electric field experiences anacceleration of 61 x 103ms2a find the electric force acting
use the exact values you enter in previous answers to make later calculations the nucleus of a hydrogen atom is a
what is the electric force between a glass ball with 20 microc of charge and a rubber ball with-45 microc of charge
a 63-kg water skier is pulled up a 140deg incline by a rope parallel to the incline witha tension of 512 n the
lasers are classified according to the eye-damage danger they pose class 2 lasers including many laser pointers produce
if a measurement of an electrons energy takes 96 ns 96 times 109 s what is the minimum possible uncertainty in the
discuss thermometers absolute temperature thermal joints inthe bridges and thermostats in housesin this discussion
a laser produces an average power of 55 w in a light beam 10 mm in diametera find the average intensityb find the peak
your university radio station has a 55 kw radio transmitter that broadcasts uniformly in all directions listeners
a 180 g copper bowl contains 185 g of water both at 200degc a very hot 300 gcopper cylinder is dropped into the water
a particle moves along the x axis its position varies with time according to the expression x 4t 2t 2 where x is in
youre planning to study in europe and you want a transformer designed to step 230 v european power down to 120 v needed
the springs of a 1400 kg car compress 40 mm when its 68 kg driver gets into the drivers seat if the car goes over a
an oak barrel with a lid of area 020 m2 is filled withwater a long thin tube of cross-sectional area 50 x10-5 m2 is
what is the fractional decrease in pressure when a barometer is raised 35 m to the top of a building assume that the