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a wire has a length of 620 10-2 m and is used to make a circular coil of one turn there is a current of 280 a in the
a car parked in the sun absorbs energy at a rate of 540 watts per square meter of surface area the car reaches a
a moving 450kg block collides with a horizontal spring whose spring constant is 494 nm the block compresses the spring
the ends of a thin bar are maintained at different temperatures the temperature of the cooler end is 8degc while the
suppose i have three small objects of equal mass m i place them on a massless rigid circular hoop of radius r i arrange
in a house the temperature at the surface of a window is 16degc the temperature outside at the window surface is 9degc
a 1kg ball is fastened to a string of length 15m it can rotate at an average angular velocity of 10 radsa if the ball
one end of an iron poker is placed in a fire where the temperature is 495degc and the other end is kept at a
which of the following particles carries nuclear interactionsa neutrinob gamma raysc alpha particlesd pi
a 100 kg block is pulled at a constant speed of 62 ms across a horizontal floor by an applied force of 123 n directed
a cubical box of widths lx ly lz l 482 nm contains eight electrons what is the energy of the ground state of this
an ideal toroidal solenoid has a cross-sectional area of 0560cm2 a mean radius of 120cm and 1650 turns what is the
a stone dropped into a pond generates a travelling wave group approximately 1 m long the waves within the group have a
the only force acting on a 21 kg canister that is moving in an xy plane has a magnitude of 54 n the canister initially
it is claimed that if a lead bullet goes fast enough it can melt completely when it comes to a halt suddenly and all
a 10 kg block of ice has a temperature of -8degc the pressure is one atmosphere the block absorbs 420 106 j of heat
the ropes in the figure below are each wrapped around a cylinder and the two cylinders are fastened together the
a 728 kg skier encounters a dip in the snows surface that has a circular cross section with radius of curvature of 129
at a fabrication plant a hot metal forging has a mass of 75 kg and a specific heat capacity of 430 jkgmiddotdegc to
in the figure two blocks are connected over a pulley the mass of block a is 79 kg and the coefficient of kinetic
an ice chest at a beach party contains 15 cans of soda at 5degc each can of soda has a mass of 036 kg and a specific
a 105-kg horizontal platform is a uniform disk of radius 177 m and can rotate about the vertical axis through its
block b in the figure weighs 740 n the coefficient of static friction between block and table is 024 angle is 31deg
a baseball approaches home plate at a speed of 480 ms moving horizontally just before being hit by a bat the batter