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a rifle is aimed horizontally at a target 18971 m away the bullet hits the target 091 inch below the aim point what was
a two capacitors c1 38 f c2 178 f are charged individually to v1 144 v v2 43 v the two capacitors are then
an air-filled parallel plate capacitor with a plate spacing of 170 cm has a capacitance of 470 f the plate spacing is
a plane drops a package of food to stranded caribou on an ice flow in the arctic circle the plane flies 49947 m above
a car is traveling at 6753 mph the driver applies the brakes and the car decelerates at 568 ms2 what is the stopping
a ball is launched straight up with a speed of 2527 miles per hour what is the maximum height reached in
four identical metallic objects carry the following charges 179 621 -416 and -941c the objects are brought
a train accelerates at 297 ms2 from rest to a steady speed in 3427 s it maintains that speed for 1742 miles and then
an oscillator vibrating at 1210 hz produces a sound wave that travels through an ideal gas at 325ms when the gas
two balls are rolled off the tabletop that is 075m above the floor ball a has a horizontal velocity of 32 ms and that
an air-traffic controller observes two aircraft on his radar screen the first is at altitude 800 m horizontal distance
a boy of mass 581 kg is about to disembark from a canoe of mass 363 kg the canoe is initially at rest with the bow just
a block of mass 5 kg hangs on a spring when a second block with an identical mass of 5 kg is tied to the first the
an apple weighs 101 when you hang it from the end of a long spring of force constant 156 and negligible mass it
a computer hard disk starts from rest then speeds up with an angular acceleration of 190 radssquared until it reaches
suppose that while moving into an apartment you move a refrigerator into place by sliding it across the floor the
a small plastic sphere with a charge of -60nc is near another small plastic sphere with a charge of -15nc if the
two small plastic spheres one charged to 25nc and the other to -25nc are connected by a 25-mm-long insulating rod
a strip of doped silicon 315 microm wide contains 90 1022 conduction electrons per cubic meter and an insignificant
the coefficient of performance of a refrigerator is defined as the ratio of heat extracted from the refrigeration
a solar cell provides an emf of 020 va if the cell supplies a constant current of 215 ma for 80 h how much electrical
in a certain automobile engine with an efficiency of 209 combustion of gasoline in one cylinder releases 510 j of heata
a parallel plate capacitor of capacitance 76 microf has the space between the plates filled with a slab of glass with
on a cold night the temperatures of the two surfaces of a glass windowpane in a house are 78deg c on the outer surface
the sun is 15 1011 m from the eartha over what surface area is solar radiation spread at this distanceb what is the