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two springs with force constants k1 and k2 are connected in series as shown in the figure how much work is needed to
a parallel-plate capacitor is charged to an electric potential of 343 volt by moving 369 e16 electrons from one plate
a parallel-plate capacitor has an area of 406 cm2 and the plates are separated by 101 millimeter with air between them
a solar powered robotic airplane to explore the martian atmosphere has wings each with area 100 m2 designed so that air
a basketball player has free throws from the foul line the center of the basket is a horizontal distance of 421 m from
the earth spins on its axis once a day and orbits the sun once a year 36524 days in each case take the positive
a large merry-go-round completes one revolution every 325 s calculate the acceleration of a child seated on it a
a tall cylindrical chimney falls over when its base is ruptured treat the chimney as a thin rod of length 550 m at the
a simple pendulum consists of a small object of mass 30 kilogram hanging at the end of 20 meter long light string that
a 520 kilogram man jumps from rest off a 100 meter high tower straight down into the water ignore air resistance he
starting from rest a 92 kilogram fire fighter slides down a fire pole the average frictional force exerted on him by
computer chips etched on circular silicon wafers of thickness 0200 are sliced from a solid cylindrical silicon crystal
an airplane diving at an angle of 48deg with the vertical releases a projectile at an altitude of 670 m the projectile
a 67 centimeter diameter horizontal pipe gradually narrows to 41 centimeter when water flows through this pipe at a
a 50omega resistor is placed in series with a 40mh inductor at what frequency will the current in such a circuit lag
a light bulb is rated at 77 w when it is connected to a 95 v battery to the nearest tenth of a watt determine what is
a 16 kg disk with radius 063 m is rotating freely at 55 rads around an axis perpendicular to its center a second disk
compute what is the diameter to the nearest tenth of an mm of a tungsten wire that has the same resistance as a copper
a merry-go-round of radius r20m has a moment of inertia i250kg m2 and is rotating at 10rpm a child whose mass is 25 kg
a 732 kilogram car stopped at an intersection is rear-ended by a 1720 kilogram truck moving with a speed of 155 ms if
a skier starts at rest at the top of a large hemispherical hill with radius height r neglecting friction show that the
a 39 kilogram block is pull by horizontal force of 50 newton along rough horizontal surface at a constant velocity
a tetrahedral is attached to a swivel in the ceiling by a light cord of length l when the ball is hit by a paddle it
the cosmic rays of highest energy are protons that have kinetic energy on the order of 1013 meva find how long would it
an auditorium of size 40m x 20m x 8m has 600 people init the temperature of the air is 27oc it takes 29 joule of