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what is the electric potential at a distance of 2m from a point charge of 80 ucif an electron e-1610-19c is placed at
a space station is to provide artificial gravity to support long-term stay of astronauts and cosmonauts it is designed
the turbine and associated rotating parts of a jet engine have a total moment of inertia of 30 kg m2 the turbine is
if you tied the string from the previous problem to a wooden block and used the wooden block to keep the lead block
in order to generate an induced voltage a coil of cross sectional area 2x10-4 m2 is placed in a 4t magnetic field and
a 30 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive
air enclosed in a cylinder has density p 14kgm3what will be the density of the air if the length of the cylinder is
suppose a capacitor in a video camera has a capacitance of 260 f and is currently holding 5000e-5 c of charge how much
when a 90 v battery is connected to a capacitor it puts 840e-4 c of charge on the capacitor when a different battery
the pericarppart of a popcorn kernel is a small container of liquid water when the poppcorn is heated to about 180
a spaceship of mass m is located between two planets of masses m1 and m2 the distance between the two planets is l as
25g of copper pellets are removed from a 300 degrees c oven and immediately dropped into 90 ml of water at 25 degress c
an electrical heating coil is immersed in 40kg of water at 21 degrees c the coil which has a resistance of 250 warms
100 joules of heat energy are transferred to 20g of mercuryby how much does the temp increasehow much heat is needed to
a uniform magnetic field of 25 mt magnitude points into the page the wire is 14m long and straight but has a loop smack
in a graphing calculator there are four aaa batteries which together provide a potential difference of 15 v and a total
instead of using batteries a certain type of flashlight has a built in hand pump which you can squeeze to generate the
at 200degc a mainly silicon resistor has a resistance of 395 and a tungsten resistor has a resistance of 752 at this
a mirror produces an image of the sun and the image is located 09800 m from the mirror the same mirror is then used to
a door essentially a uniform rectangle of height 200 m width 083 m and weight 1090 n is supported at one edge by two
a mirror produces an image of the sun and the image is located 09900 m from the mirror the same mirror is then used to
a child hunting for his favorite wooden horse is running on the ground around the edge of a stationary merry-go-round
the lob in tennis is an effective tactic when your opponent is near the net it consists of lofting the ball over his
a child pulls a 300-kg sled across level ground at constant velocity with a light rope that makes an angle 300 degrees