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a sqaure with sides of length 2m is perpendicular to a magnetic field of strength 10 t if the square is rotated by 60o
a toroid having a square cross section 440 cm on a side and an inner radius of 131 cm has 660 turns and carries a
a 054 cm high object is placed 87 cm in front of a diverging lens whose focal length is -75 cm what is the height of
a siren at rest has a frequency f0 standing at a crosswalk a student hears a frequency f from the siren in an
light of wavelength 700 nm falls on a 038 mm wide slit and forms a diffraction pattern on a screen 13 m awaya find the
muonium muonium is a hydrogen-like atom in which the electron is replaced with a muon a fundamental particle with a
a concave mirror used by a person who is shaving or applying makeup creates a virtual image of the face that is 160
a spring oscillator is designed with a mass of 0153 kg it operates while immersed in a damping fluid selected so that
one block of mass m slides without friction on horizontal table the block is attached to one end of a massless spring
a rocket is projected upward from the earths surface r re with an initial speed v0 that carries it to a distance r 18
the planet uranus has a satellite ariel which travels in an orbit of radius 1910times108 m with a period of 252 days
a spaceship is approaching a space station at a speed of 20 105 ms the space station has a beacon that emits green
the weight of a star is usually balanced by two forces the gravitational force acting inward and the force created by
ceres the smallest identified dwarf planet in the solar system has a radius r 480 km and an acceleration due to
standing on the surface of a small spherical moon whose radius is 681middot104 m and whose mass is 707middot1018 kg an
the second-order fringe of 660 nm light is observed at an angle of 21deg when the light falls on two narrow slits that
a source of sound waves of frequency 04 khz is stationary an observer is traveling at 041 times the speed of sounda
a piano tuner sounds two strings simultaneously one has been previously tuned to vibrate at 2830 hz the tuner hears 50
the longest string a thick metal wire on a particular piano is 20 m long and has a tension of 3000 n it vibrates with a
gas is confined in a tank at a pressure of 113 atm and a temperature of 225degc if two-thirds of the gas is withdrawn
a 230 kg object attached to a spring moves without friction and is driven by an external force given by f 300 n
the sun emits electromagnetic waves including light equally in all directions the intensity of the waves at the earths
a light ray is incident upon a plane interface between two materials the ray makes an incident angle with the normal to
when a proton 16 x 10-19 c moves 10 m along the direction of an electric field of strength 30 nc what is the magnitude
a nuclear power plant has an electrical power output of 1800 mw and operates with an efficiency of 30 if excess energy