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two capacitors c1 25 microf and c2 30 microf are connected in parallel and charged with a 140 v power supplya
a thin spherical shell of mass 0450 kg and diameter 0210 m is filled with alcohol 806kgm3 it is then released from
the distance between two telephone poles is 500m when a 100kg bird lands on the telephone wire midway between the poles
a total charge q is distributed uniformly throughout a spherical volume of radius r let r denote the distance of a
a centrifuge rotor rotating at 11000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque
a ping pong ball is a hollow air-filled sphere one such ping pong ball has a radius of 225 cm and a mass of 35 g when
four identical charges 30 microc eachare brought from infinity and fixed to a straight line the chargesare located 050
a 680 g lead bullet traveling at 460 ms is stopped by a large tree if half the kinetic energy of the bullet is
a popular brand of cola contains 650 g of carbon monoxidedissolved in 100 l of soft drink if the evaporating
calculate the buoyant force in air on a kilogram of lead whose density is about 11 grams per cubic centimeter compare
a 10 kg mass is placed on a 25o incline and friction keeps it from sliding the coefficient of static friction in this
huck finn walks at a speed of 070 across his raft that is he walks perpendicular to the rafts motion relative to the
in which case is it more likely that we may neglect non-ohmic effects due to the heating of the circuit by the current
two capacitors are connected to a battery the battery voltage is v 50 v and the capacitances are c1 200 microf and c2
an electron has an initial velocity of 110j 150k kms and a constant acceleration of 400x1012 ms2 in a region in which
a 868x105-m- long pipeline has an inside diameter of 12 in and can be supplied with oil at 35ls a what is the volume of
a 1000 kg rocket sled at rest on level frictionless rails is loadedwith 25kg of propellent it exhaust the propellant in
pressure is defined as force divided by area what are the dimensions of pressure express pressure in terms of si base
consider an airplane that normally has an air speed of 90 kmh in a 95 kmh crosswind blowing from west to east calculate
the magnitude of the vectors f is 30 n the force on the right is applied at an angle 64 degrees and the the mass of the
a placekicker must kick a football from a point 360 m about390 yd fm the goal and the ball must clear the crossbar
driving home from school one day you spot a ball rolling out into the street see the figure you brake for 140 slowing
a glass window 035cm thick measures 84cm by 84cm how much heat flows through this window per minute if the inside and
what is the minimum photon energy needed to create an electron - positron pair when a photon collides a with a free
the earths orbit is nearly circular but not quitethe radial motion oscillates in a narrow range around the minimum of