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an electric field exerts a force of 300 x 10 -4 n on a positive test charge of 750 x 10 -4 c find the magnitude of the
a solid spherical conductor of radius 15 cm has a charge q 65 nc on it a second initially uncharged spherical
a wind turbine is initially spinning at a constant angular speed as the winds strength gradually increases the turbine
a 8796 lb force is applied to a surface that measures 37 in long and 15 in wide determine the pressure exerted on the
the rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides therefore
a jellyfish is floating in a water-filled glass tank 100 m behind a flat pane of glass 600 cm thick and having an index
a star of radius 91 times 105 km rotates about its axis with a period of 49 days the star undergoes a supernova
you are on a mysterious planet and notice that a 29 m long simple pendulum has a period of 26 s determine the planets
a 61 kg rock with a volume of 33 l is completely submerged in water the density of water is 1 kgla what volume of water
a steel ball with a mass of 320g is dropped from a height of 210m onto a horizontal steel slab the ball rebounds to a
an assembly line has a staple gun that rolls to the left at 11 ms while parts to be stapled roll past it to the right
a boat takes 32 hours to travel 50 km down a river then 46 hours to returnhow fast is the river
a starship blasts past the earth at 20times 108rm rm mrm s just after passing the earth the starship fires a laser beam
a cosmic ray travels 60 rm km through the earths atmosphere in 420 mu s as measured by experimenters on the groundhow
a solar flare blowing out from the sun at 090 c is overtaking a rocket as it flies away from the sun at 060 caccording
in the picture below a 10 kg bar 12 m long is set up to rotate about its center the dark circle each arrow represents a
on an airplanes takeoff the combined action of the air around the engines and wings of an airplane exerts a 7960-n
the pulmonary artery which connects the heart to the lungs has an inner radius of 22 mm and is 86 cm long if the
water moves through a constricted pipe in steady ideal flow at the lower point shown in the figure below the pressure
a bomb mass 72 kg goes off and splits into 3 pieces the first piece has a mass of 11 kg and velocity of 95 ms the
the resolving power of a microscope depends on the wavelength used if one wished to see a particular type of molecule a
the british gold sovereign coin is an alloy of gold and copper having a total mass of 7988 g and is 22-karat golda find
a source of electromagnetic waves radiates power uniformly in all directions at a single frequency at a distance of 700
the rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water the sudden
when you take your 1400-rm kg car out for a spin you go around a corner of radius 52 m with a speed of 11 ms the