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a ball is thrown straight up by a speed of 30msa how long does it take to reach the maximum heightb what is the max
an astronaut travels to a distant star with a speed of 052 relative to earth from the astronauts point of view the star
a fuse in an electric circuit is a wire that is designed to melt and thereby open the circuit if the current exceeds a
when twelve moles of hydrogen and six mole of oxygen react to form twelve moles of water the energy released is 2904 kj
a laser beam is traveling through an unknown substance when it encounters a boundary by air the angle of reflection
a 10m uniform beam of weight 100 n is supported with two ropes at the ends if a 400 n person sits at 20 m from the left
a horizontal power line carries a current of 4900 a from south to north earths magnetic field 747 microt is directed
a battery charger is connected to a dead battery and delivers a current of 74 a for 53 hours keeping the voltage across
two loudspeakers are placed on a wall 300 m apart a listener stands 400 m from the wall directly in front of one of the
through an adiabatic process the temperature of 392 moles of a monatomic ideal gas drops from 485 to 205 degrees
a pendulum consists of a mass less rigid rod with a mass at one end the other end is pivoted on a frictionless pivot so
1 how far does light travel in one year this distance is known as a light-year and is utilized in measuring
a 36-efficient electric power plant produces 900 mw of electric power and discharges waste heat into 20circc ocean
at a certain location the horizontal component of the earths magnetic field is 23010-5 t due north a proton moves
a charge is moving perpendicular to a magnetic field and experiencesnbspa force whose magnitude is 29110-3 n if this
light from a laser strikes a diffraction grating that has 6000 groves per centimetre the distance between the central
when a charged particle moves at an angle of 11deg with respect to a magnetic field it experiences a magnetic force of
an athlete swings a 360 kg ball horizontally on the end of a rope the ball moves in a circle of radius 0790 m at an
light of wavelength 600 nm in air is incident on the surface of a block of plastic at an angle of 627 degrees to the
a wire 200 m long carries a current of100 a and makes an angle of 350deg with a uniform magnetic field of magnitude b
a tube of glowing gas emits light at 550nm and 400 nm in a double-slit apparatus what is the lowest order 550 nm bright
with two slits separated by 039 mm the interference pattern has bright fringes by angular spacing0075deg what is the
a 0100 kg block is suspended from a spring when a small pebble of mass 40 gis placed on the block the spring stretches
the index of refraction for a diamond for red light of wavelength 652 nm is 235 while that for blue light of wavelength
a proton traveling at 190deg with respect to a magnetic field of strength 270 mt experiences a magnetic force of