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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 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
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
kim begins skiing from a rest position at the top of a 300-meter-long bunny slope that is inclined at 12deg with the
1 define nuclear fission and explain it with the help of the binding energy per nucleon what is the difference between
describe how you would relate energy derived from wave power all the way back to rearranging chemical or nuclear bonds
a father pulls his child on a sled by pulling on rope over his shoulder he exerts a force of 50 n at an angle of 30a