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a what process or occurrence can create magnetic fieldsb explain coulombs law and how it relates to electric
a ball of radius 0200 m rolls with a constant linear speed of 360 ms along a horizontal table the ball rolls off the
spinal fluid pressure can be measured using a spinal tap in which a needle is inserted in the patients lower back with
a stone is dropped from rest into a well the sound of the splash is heard exactly 200 s later find the depth of the
the orbital radius of a planet about the sun is a greater when the period of revolution is shorter b greater when the
in an adventure movie a 650-kg stunt woman falls 780 m and lands in a huge air bag her speed just before she hit the
in the nuclear-fission reaction neutrons are emitted usually some number of neutrons between 0 and 5 the process is
a transverse harmonic wave travels on a rope according to the following expression yxt 014sin27x 175t the mass
two kids sit on the ends of a uniform board that is 662 meters long and 0281 meters wide the board rotates horizontally
a body oscillates with simple harmonic motion according to x 85 m cos50pi radst pi3 rad at t 425 s what is the
an incredibly large slingshot is stretched 15 meters to launch a 1800-gram projectile with a speed sufficient to escape
a sound wave propagates in air at 28degc with frequency 320 khz it passes through a region where the temperature
as a certain sound wave travels through the air it produces pressure variations above and below atmospheric pressure
a platinum resistance thermometer has resistances of 2000 when placed in a 0c ice bath and 2538 when immersed in a
a length of wire has a radius of 300 times 10 -3 m and a resistance of 0200 when the potential difference across the
a wire of diameter 0750 mm and length 300 m has a measured resistance of 240 what is the resistivity of the
determine the amplitude of the resultant wave when two sinusoidal string waves having the same frequency and traveling
a 69-g ice cube at 0degc is heated until 60 g has become water at 100degc and 90 g has become steam at 100degc how much
a microscope with a tube length of 200 mm achieves a total magnification of 800x with a 40x objective and a 20x
an unknown substance has a mass of 0125 kg and an initial temperature of 1123degc the substance is then dropped into a
a hard-boiled egg of mass 520 moves on the end of a spring with force constant 248 the egg is released from rest at an
an aluminum cup contains 225 g of water and a 40-g copper stirrer all at 27degc a 400-g sample of silver at an initial
a certain kind of glass has nblue 162 for blue light and nred 1572 for red light if a beam of white light containing
a beam of light in air is incident on the surface of a rectangular block of clear plastic n 163 its velocity inside
dez pours a liquid n 134 into a container made of glass n 152 the light ray in glass incident on the glass-to-liquid