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a proton with mass 167times10minus27 kg and charge 160times10minus19 c accelerates from rest in a uniform electric
a dockworker loading crates on a ship findsthat a 18 kg crate initially at reston a horizontal surface requires a 78n
protons carry an electric charge ofe 160times10minus19 c electronscarry a charge of minuse and neutrons are
you are a materials science engineer and your group has fabricateda new dielectric that has an exceptionally large
two capacitors are connected to a battery the battery voltageis v 50 v and the capacitancesare c1 200 mufand c2 400
the drawing shows three different resistors in two differentcircuits the battery has a voltage of v 27 vand the
a 045 v potential difference is maintained across a 13m length of tungsten wire that has a cross-sectional area of067
five charges are placed in a closed box each charge except the first has a magnitude which is twice that of the
charge of uniform volume density 1ucm3 fills an infinitecylinder of radius 5cm the center of the cylinder is on the
if a circuit has two resistors in a parallel series with resistances 40 komega and 20 komega and has two capacitors
1 isotopes of a particular element in the periodic table have which nuclear property in commona the same number
1 what is the main optical element of a refracting telescopea a curvedmirrorb a plane flatmirrorc a prismd a lens2 a
a uniform 593 m long horizontal beam that weighs 468n is attached to a wall by a pin connection that allows the beam to
a 4611n child and a 114n child sit on either end of a 29m long seesaw suppose a 280n child sits 196m from the 4614n
a 30 microc charge is placed 40 cm from an identical 30microc charge how much work would be required to move a
when a car is traveling at 25 ms on level ground the stopping distance is found to be 22m this distance is measured by
a 100-g cube of ice at 0 c is dropped into 100 kg of waterthat is originally at 800 c what is the final temperature of
a 100-g piece of metal initially at 100 c is placed in a 250 gof water contained in a 300-g aluminum vessel initially
an underwater scuba diver sees the sun at an apparent angle of280deg from the vertical what is actual direction of the
the tires of a car make 85 revolutionsas the car reduces its speed uniformly from 90 kmh to 60 kmhthe tires have a
diagnostic ultrasound offrequency 49 mhz is used to examine tumors in soft tissuea what is the wavelength in air of
a cannon mounted on a cart that moves at a constant velocity v across the floor at what angle should the cannon point
a tuning fork vibrates at a frequency of 264hz and the tip ofeach prong moves 15mm to either side of the
a 30 kg girl skating at 6 ms collides with her 80 kg father who is initially standing still he grabs his daughter as
a soleniod 100 cm in diameter and 750 cm long is made from copper wire of diameter 0011cm with very thin insulation