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if you toss a coin straight upward while riding in a train where does the coin land when the motion of the train is
the emf of a battery is e 10 v when thebattery delivers a current of 04 a to a loadthe potential difference between
a mass m is attached to a spring of constant k and hung from the ceiling if the mass is held at rest while the spring
suppose the faintest star you can see with a 4-inch telescope has a magnitude of80 what is the magnitude of the
1 is this true or false please explain in paragraph form the four equations of kinematics are not useful in describing
you transfer a one liter of lemonade into a 2-liter size pitcher and the lemonade fills up half the container does the
1 a concave mirror is constructed so that a man at a distance of 26 cm from the mirror sees his image magnified 20
a candle with a flame 16 cm tall is placed 49 cm from the front of a concave mirror a virtual image is formed 10 cm
1 as indicated in the figure below oxygen diffuses to a hot carbon surface on which the following reaction occurs3c
1 two satellites a and b are in different circular orbits about the earth the orbital speed of satellite a is
a capacitor consists of two metallic plates of circular form with radius r the voltage on the capacitor is v and the
a sled with a mass of 20 kg slides across a level mixture of snow and dirt having a coefficient of kinetic friction of
fiber-optic communication came about in the 1970s due to advances in both optical cable and compact lasers capable of
you are 19 m tall and stand 28 m from a plane mirror that extends vertically upward from the floor on the floor 14 min
a 40-kg block slides down an inclined plane that makes an angle of 31deg with the horizontal starting from rest the
a soft tennis ball is dropped onto a hard floor from a height of 160m and rebounds to a height of 122m assume that the
global energy analysisworldwide energy consumption varies dramatically but the impacts are shared by all the most
you wish to buy a motor that will be used to lift a30-kg bundle of shingles from the ground to the roof of a house the
1 many stoplights now have a sensing system based on inductance to determine if a car is waiting at a red light if that
the leader of a bicycle race is traveling with a constant velocity of 115 ms and is 110 m ahead of the second-place
explain charles ofria states that different configurations have different advantages and disadvantages in terms of
a 68komegaresistor has burned out in a circuit you must replace it with another resistor with the same resistance value
a 12v source is connected across a 10 omega resistera how much energy is used in 2 minutesb if the resister is
dario a prep cook at an italian restaurant spins a salad spinner and observes that it rotates 200 times in 500 seconds