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two long straight wires that are suspended from a ceiling the mass per unit length of each wire is 0071 kgm each of the
a transformer is designed to change 120v into 10000v andthere are 164 turns in the primary coil how many turns are in
two point particles separated by 080 m have atotal charge of 200 muc a if the twoparticles repel each other with a
a spring is extended by 30mm when a force of 15 n is applied toit calculate the energy stored in the spring when
a 527-kg hot-air balloon takes off from rest at the surface of the earth the non-conservative wind and lift forces take
the corners of an equilateral triangle lie on a circle that has a radius of 25m what is the length of a side of the
estimate how many electrons there are in your bodymy approxmass is 794 kg make any assumptions you feel are necessary
light waves with two different wavelengths 632 nm and 474 nmpass simultaneously through a single slit whose width is
a cancer patient is undergoing radiation therapy in which protons with an energy of 12 mev are incident on a 025 kg
a motor has an armature resistance of 325omega if it draws820 a when running at full speed and connected to a 120-v
a projectile is launched with a speed of 40ms at an angle of 60 degrees above the horizantal use concervation of
a simple generator is used to generate a peak output voltageof 240 v the square armature consists of windings that are
two trains are traveling toward each other at a constant speedof 10 mileshr at the point where the trains are 20
a lens is made of a transparent material having an index ofrefraction of 17 one side of the lens is flat and the
the equilibrium separation of h atoms in the h2 molecule is 0074nm calculate the energies and wavelenghts of photons
an object is dropped from rest from a height 32 times 106 mabove the surface of the earth if there is no air resistance
neglecting air resistance if you throw a ball straight upwith a speed of 20 ms how fast will it be moving when you
when a 250kg object is hanging vertically on a lightspringdescribed by hookes law the spring stretches 276cma what is
calculate the resultant velocity of an airplane that normallyflies at 200 kmhr if it encounters a 50 kmhr tailwind if
a wheel of mass m radius of gyration k spins smoothlyon a fixed horizontal axle of radius a which passes through a
a 75-w 110-v bulb is connected in parallel with a 40-w 110-vbulb what is the net
a 285 kg stunt boat is driven on the surface of a lake at aconstant speed of 135 ms toward a ramp which is angled at
excess electrons are placed on a small lead sphere with mass800g so that its net charge is -320 x 10-9ca find the
an ultracentrifuge is a rotating device that can produce acceleration up to 106 g if the distance from the center of
a car sits in anentrance ramp to a freeway waiting for a break in the traffic thedriver sees a small gap between a van