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a 5 x 103 newton weight is held suspended in equilibrium by two cables cable one applies a horizontal force to the
it is possible to charge a balloon to several thousand volts using electrostatics for example by rubbing it on ones
a 100g piece of gold that is heated to 160c and placed in 200g of 20c water what is the equilibrium temperature if
a light beam fully illuminates a 4-slit diffraction slide creating a central maximum of intensity 20 mwsq cm the
a one-dimensional harmonic oscillator is perturbed by an extra potential energy bx calculate the change in each
a battery with e120v and internal resistance r19omega is connected to two 95-komega resistors in series an ammeter of
experiment with the double-slit procedure using water waves and a barrier with two openings the wavelength of the
here are the familiar pair of carts connected by a spring what are the relative speeds of the carts when the spring
1 a ship has a top speed of 30 ms in calm water the current of the ocean tends to push the boat at 20 ms on a
two kids are playing on a teeter totter at the park 10 feet long if the kid on the left is 57 pounds and the kid on
what is the torque acting on a 11 cm wrench if the f 62 newtons and angle theta
using amplitudes of lunar librations demonstrate that over time 59 of the lunar surface can be seen for
in a bicycle the pedals drive the chain wheel which is connected by means of a chain to the cogwheel a small wheel
a uniform and constant in time magnetic field has a magnitude of 015 t and is perpendicular to a circular loop of wire
two long wires lie in a xy plane and each carries a current in the positive x axis wire 1 is at y 100 cm and carries
an explosion breaks an object into two pieces one of which has 148 times the mass of the other if 7430 j were released
a 610 kg bungee jumper tied to a 370 m long cord leaps off a bridge whose deck is 670 m above the water he falls to 80
a long vertical wire carries an unknown current coaxial with the wire is a long thin cylindrical conducting surface
a curve of radius 68m is banked for a designed speed of 110kmh if the coefficient of the static friction is 034 wet
air conditioners operate on the same principle as refrigerators consider an air conditioner that has 700 of refrigerant
a car moving with an initial speed v collides by a second lighter stationary car that is 417 as massive after the
heather in her corvette accelerates at the rate of 300 - 200ms2 while jill in her jaguar accelerates at 100 300 ms2
the velocity of a 250 kg block sliding down a frictionless inclined plane is found to be 144 ms140 s later it has a
an archer aims an arrow precisely horizontal over a flat field and shoots it at the same instant the archers watchband