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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
light is incident at an angle of 43 degrees on the surface ofa dimond find the angle of