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as the wood flap rotates at 659radsec it hits a switch and turns on a heater the heater warms the bottom of a 20 m rod
estimate the size of sensitive cells of the human eye provided that the entrance pupil of the eye about 1 mm in
when an immersion glass thermometer is used to measure the temperature of a liquid the temperature reading will be
a gas is allowed to expand at constant pressure until it reaches its final volume it is then cooled at constant volume
an 2705kg truck is stopped at a red light a 1903kg car that was moving 91ms bumps into the truck and they stick
hexagonal close-packed structure consider the first brillouin zone of a crystal with a simple hexagonal lattice in
if you set up a standing wave of 6 segments how many waves will occur if you triple your frequency how many wavelengths
ball 1 with a mass of 120g and traveling at 15ms collides head on with ball 2 which has a mass of 330g and is
a spring-loaded cannon is able to throw a 20-kg pumpkin 10 m vertically upward when the spring was initially compressed
brillouin zones of rectangular lattice make a plot of the first two brillouin zones of a primitive rectangular
a bowling ball of mass 75 kg and radius 90cm rolls without slipping 10 m down a lane at 43msa calculate the angular
if an electron is confined to a region of size 430 nm what is the minimum possible uncertainty in its momentum 122e-27
a centrifuge in a medical laboratory rotates at a rotational speed of 3600revmin when switched off it rotates 500 times
the threshold of hearing in air corresponds to a frequency of 1000 hz and an intensity of about 95 x 1013 wm2 when
find equation for the ground state energy for a particle in a spherically symmetric potential wellvr -adr-a and show
a if an electron makes a transition from the n 4 bohr orbit to the n 3 orbit determine the wavelength of the photon
consider a light airplane 5158 lbs with a tricycle landing gear the front wheel is 562rsquo ahead of the cm the rear
an engine based on the stirling cycle uses 22 kg of n as its working fluid 570 kj of heat enters at a temperature of
a 600 gram particle initially at rest at the origin is subjected to a force of f15i20j n which pushes the particle
if car a is moving east at a speeed of 40mph realtive to the ground and car b is moving east at 30mph relative to the
the 2007 world record for the mens 100m dash was 977 seconds the third place runner crossed the finish line in 1007 s
the rubidium isotope 87 rb is a emitter with a half life of 49 times 1010 y that decays into 87 sr it is used to
consider a piece of an n-type semiconductor 15 cm long 07 cm wide and 15 mm hick if we apply a 035 v voltage across the
1000 gallons per minute of fluid flows through a 3 inch diameter pipe what is the average velocity of the
a circuit is made from a capacitor and inductor only the switch is initially open and the capacitor initially carries a