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a disk-shaped merry-go-round of radius 302 m and mass 159 kg rotates freely with an angular speed of 0635 revs a 541-kg
a motor has a single loop inside a magnetic field of magnitude 0581 t if the area of the loop is 3050 cm2 find the
a block of mass is pushed up against a spring with spring constant until the spring has been compressed a distance from
an elastic circular conducting loop expands at a constant rate over time such that its radius is given by rt r0 vt
a string that is 200 cm long and has a mass per unit length of 800 10-3 kgm is stretched to a tension of 180 n a find
a convex mirror has a focal length of -30 cm find the magnification produced by the mirror when the object distance isa
the planet earth travels in a circular orbit at constant speed around the sun what is the net work done on the earth by
a box of mass is sliding down a frictionless plane that is inclined at an angle above the horizontal as shown in the
knowing the sign of the work done on an object is a crucial element to understanding work positive work indicates that
two long parallel wires 40 cm apart are carrying currents of 10 a and 20 a in the opposite direction what is the
a transverse wave on a string is described by the following wave function y 0105 sin 10 x 5t where x and y are in
a circular coil of wire with 47 turns and a radius of 381 cm is laying flat on a horizontal table there is a uniform
some species use echolocation to determine the position and velocity of objects and prey suppose a bat at rest sends
a system gains 1700 j of heat while the internal energy of the system increases by 6650 j and the volume decreases by
a motorist suddenly notices a stalled car and slams on the brakes negatively accelerating at 64 unfortunately this
two automobiles are equipped with the same single frequency horn when one is at rest and the other is moving toward the
when 13584 g of sodium acetate trihydrate was mixed into 1000 cm3 of 02000 m hclaq at 25oc in a solution calorimeter
a 3245- sample of a solid is placed in a flask toluene in which the solid is insoluble is added to the flask so that
what would be the volume of the carbon dioxide if it were collected wet at 2402 degrees celsius still with the same
1 a solution is found to be 00370 by weight alf3 what is the concentration of the f1- ion expressed in
a graduated cylinder is filled to the 4000-ml mark with a mineral oil the masses of the cylinder before and after the
a roller coaster moves 200 ft horizontally and then rises 135 ft at an angle of 300deg above the horizontal next it
a guitar string produces 4 beats per second when sounded with a 350-hz tuning fork and 9 beats per second when sounded
assuming complete dissociation of the solute how many grams of kno3 must be added to 275 ml of water to produce a
beat frequencies can be used to measure the pitch of an unknown sound even if it normally would be outside the audible