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a source emits sound of wavelength 254m an 274m in air use the speed of sound343ms a write the equations of these two
to listen to a radio station a certain home receiver must pick up a signal of at least 10x10-10 wif the radio waves
three uniform sticks each of mass are placed on the floor as follows stick 1 lies along the axis from 0 to 20 stick
a 900 kg car enters an unbanked curve with a radius oof 750 m the coefficient of static friction between the tires and
the fundamental frequency of a pipe that is open at both ends is 560 hz a how long is this pipe use v 344ms b if one
unless otherwise stated all objects are located near the earths surface where 98 a hockey puck with a weight of 10 is
a microwave oven can heat 205 of water from 200 to 900 in 200 if the wavelength of the microwaves is 152 how many
a jet pilot takes his aircraft in a vertical loop a if the jet is moving at a speed of 1200 kmh at the lowest point of
a spherical weather balloon is filled with hydrogen until its radius is 340 m its total mass including the instruments
at rush hour the noise from a highway is 104 wm2 with 100 cars passing a given point a minute at night the average
a proton is shot at 5x107 ms toward a gold atom with a mass 197 times t hat of the proton and deflects it straight back
a long rope is suspended from the ceiling waves are started from the bottom traveling up the rope it is observed that
a 1 kg block attached to a spring with force constant 25 nm oscillates on a horizontal frictionless air track at t 0
a simple harmonic oscillator takes 12 s to undergo 5 complete vibrations find a the period of its motion b the
a ball is dropped from a height of 4 m and makes an elastic collision with the ground assume that no mechanical energy
a simple pendulum has a period of 25 sa what is its period if its length is made four times largerb what is its period
suppose that a binary star system consists of two stars of equal mass they are observed to be separated by 400 million
when the sun evolves to the red giant stage its radius may increase to as high as 100 solar radii using the expression
using the mass-luminosity relationship if a main sequence star has a luminosity of 3000 times the luminosity of the sun
the current density inside a long solid cylindrical wire of radius a is in the direction of the central axis and its
now adapt the ideas of the energy and entropy of mixing to gasses in different cylinder the temperature is fixed there
the wheels of a wagon can be approximated as the combination of a thin outer hoop of radius rh 0474 m and mass 546 kg
a 109-kg horizontal platform is a uniform disk of radius 161 m and can rotate about the vertical axis through its
a uniform thin rod of mass 455 kg pivots about an axis through its center and perpendicular to its length two small
an engine flywheel initially rotates counterclockwise at 539 rotations per second then during 213 seconds its rotation