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two batteries in parallel each of emf 10 v and internal resistance 05 are connected to an external 20 resistor find
in an lc circuit in which c 40f the maximum potential difference across tha capacitor during the oscillations is 15v
a soap film formed in a loop of wire is because of its weight not exactly uniform in thickness but wedge-shaped in
the avarage intensity of solar radiation that falls normally on surface just outside the earths atmosphere is 14 kwm2a
a grating has 600 rulings per mm and is 60 mm widea what is the smallest wavelenght interval that can be resolved in
a line in the x-ray spectrum of gold has a wavelength of 185 pm185x10-12 m the emitted x-ray photons corresponds to a
a calculate the probability that an electron in the ground state of a hydrogen atom will be found at a greater distance
the work function for cesium 181 ev is much lower than the work function for other metalsa what is the photoelectric
a hypodermic syringe is attached to a needle that has an internal radius of 0301 mm and a length of 301 cm the needle
a light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 507deg
a 16 kg girl slides down a playground slide that is 28 m high when she reaches the bottom of the slide her speed is 13
an element of mass 92 amu 1 amu 166x10-27 kg moves in a mass spectrometer where the magnetic field is always 7t and
an escalator moves 10 people 60 kg each per minute from the first floor of a store to the second floor 5 m above
an evacuated spherical diving bell containing a camera is in the ocean at a depth of 113 m it has a flat transparent
a 45 kg block of ice slides down a frictionless incline 15 m long and 091 m high a worker pushes up against the ice
a 23- bullet traveling 220 penetrates a 26block of wood and emerges cleanly at 155 if the block is stationary on a
a conservative force fx -2x3x4 is applied to a mass m f in newtons and x in meters if the mass moves from x 020 m to
a230-mw laser beam of diameter185mm is reflected at normal incidence by a perfectly reflecting mirror calculate the
a 34 x 105 kg airplane is flying horizontally at a height of 60 km with constant velocity what is the amount of lifting
a in 1975 the roof of montreals velodrome with a weight of 360 kn was lifted by 10 cm so that it could be centered how
a pendulum is made out of a 2513 - 01 g mass and a string that is 13 - 0005 m long if the mass has a speed of 13 - 01
two comets each of mass 6500 kg and traveling 95 ms in opposite directions collide head-on and come to rest how much
in a tornado or hurricane a roof may tear away from the house because of a difference in pressure between the air
a cd has a mass of 165 g and a radius of 608 cm when inserted into a player the cd starts from rest and accelerates to
a factory worker pushes a 314kg crate a distance of 435m along a level floor at constant velocity by pushing downward