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a lighted candle is placed 36 cm in front of a diverging lens the light passes through the diverging lens and on to a
a block of ice of mass 08 kg and initial temperature t 0 c is placed in a sealed insulated container full of helium
an 805-kg stone at the end of a steel youngs modulus 20 x 1011 nm2 wire is being whirled in a circle at a constant
a loop antenna of area 200 cm2 and resistance 521 is perpendicular to a uniform magnetic field of magnitude 170 t the
the resistance of a bagel toaster is 14 to prepare a bagel the toaster is operated for one minute from a 120-v outlet
a force of 75n is applied horizontally to a box of mass 10kg moving with an initial speed of 4ms on a level surface
a man leaps from the top of a 60 meter tall building if his initial speed is 24 ms and at an angle of 23 degrees above
laser light of wavelength 635 nm is incident upon two narrow slits separated by 14 mm on a screen 41 m beyond the slits
when responding to sound the human eardrum vibrates about its equilibrium position suppose an eardrum is vibrating with
two trains on separate tracks move toward one another train 1 has a speed of 130kmhr and train 2 has a speed of 90kmhr
two people are pulling a boat through the water as in the figure below each exerts a force of 600 n directed at a
a stationary observer hears 5976 hz change to 4478 hz as a source of constant frequency passes at constant speed
if the observer knows hisher speed is 250 ms and the temperature is 30degc and hears a frequency of 4500 hz what is the
an x-ray photon is scattered from a free electron mass m at rest the wavelength of the scattered photon is and the
in the figure below m1 95 kg and m2 40 kg the coefficient of static friction between m1 and the horizontal surface is
a 70 kg object undergoes an acceleration of 25 ms2a what is the magnitude of the resultant force acting on it nb if
the handle of a grinding wheel goes around a circle with a circumference of 12m if it requires a force of 120n to turn
what are the possible value for of n and m if a l 1 b l 4 and c l 0 compute the minimum possible energy for each
orb spiders make silk with a typical diameter of 015 a typical large orb spider has a mass of 050 a if this spider
can a photon and an electron of the same momentum have the same wavelengths calculate their wavelengths if the two have
a wien velocity filter uses an electric field and a magnetic field that are at right angles to each other if there is
a 1kg mass hangs from a cord wrapped around a solid disk pulley with a mass of 3kg and radius 25cm the cord is 2m long
a 11 kg satellite has a circular orbit with a period of 33 h and a radius of 36 times 106 m around a planet of unknown
a compound microscope has a barrel whose length is 163 cm and an eyepiece whose focal length is 13 cm the viewer has a
a 2590-kg spacecraft is in a circular orbit 2720 km above the surface of marshow much work must the spacecraft engines