Physics Waves And Oscillations Level: High School
A single microphone feeds simultaneously into two speakers . Placed a meter apart facing an outdoor audience (there are no reflecting walls) . Assuming the input to the mike is human speech with the frequency of 500Hz . at what angle to the forward direction would the speaker output be most difficult to hear? Give your answer in degrees .
Physics Waves And Oscillations Level: High School
Two identical sources produce waves along the surface of a tank of water . At all points along the center line between these two sources , there is constructive interference . Lets pick one point on this center line and call it P . The nearest point to P at which destructive interference occurs are 10.7 cm from one source and 11.9 cm from the other . What is the wavelength of the wave from the two sources ?
Physics Waves And Oscillations Level: High School
Two identical point sources produce water waves with a wavelength of 0.0284 m . The sources are 0.129m apart .(a) Find the smallest angle away from the center line at which constructive interference occurs .
(b) Find the second smallest angle away from the center line at which constructive interference occurs ?
(c) Find the second smallest angle away from the center line at which destructive interference occurs ?
(d) In all , how many lines of constructive interference will there be on each side of the center line ?
Physics Waves And Oscillations Level: High School
As per the figure at “click here” Suppose point number 8 is 8.9 cm to the right of the center line . The screen is positioned 220 cm from the slits . The sources emits red light with wavelength 6.2 x 10^-7 m . Calculate the separation between the slits .
Physics Waves And Oscillations Level: High School
A certain person in a typical conversation speaks at a sound level of 62 dB . The music at a certain rock concert reaches a sound level of 130 dB. How many times as great is the intensity of the music ?
Physics Waves And Oscillations Level: High School
An aggressive piano increase the tension on a certain piano wire by 37% . How does the frequency of the sound that the wire will produce after this is done compare to the frequency before ?
Physics Gravitation Level: High School
Two spheres of mass 300kg and radius 0.200m are in deep space , sphere 1 is fixed and sphere 2 is replaced from rest a large distance away . Calculate the speed with which sphere 1 collides with the fixed sphere 2 .The gravitational potential energy of this system is -3.0 x 10^-5 J and gravitational force the sphere exert on each other is 1.50 x 10^-4 N.
Physics Gravitation Level: High School
A man weights 600N while on the surface of the Earth . If he is transported to the planet mythos , which has the same mass as Earth but a radius that is twice as large as Earths , his weight would be ?
Physics Gravitation Level: High School
Six identical physics books , each with a mass of 2.0 kg are taken to the moon , On the moon , their combined mass is ?
Physics Gravitation Level: High School
A ball is whirled on the end of a string in a horizontal circle at constant speed . Suddenly , the string breaks , Immediately after the strings breaks , the ball will ?Physics Gravitation Level: High School
The sun and a moon both have an effect on the tides . Which one has the larger effect , and why ?Physics Gravitation Level: High School
A full moon is just now rising . What time of day is it ? -Physics Gravitation Level: High School
What are the units for the constant G used in Newton’s law of universal gravitation ?
Physics Gravitation Level: High School
Object weights 20N on Earth . What is its approximate mass ?
Physics Gravitation Level: High School
Two artificial satellites are in circular orbits about the Earth , which of the two will be moving faster in its orbit ?