Physics, 01.09.2019 07:30 LearningZone
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide greater intensity. for example, the note at 112 hz has two strings at this pitch. if one string slips from its normal tension of 607 n to 515 n, what beat frequency will be heard when the two strings are struck simultaneously? answer in units of beats/s
Answers: 1
Physics, 21.06.2019 17:10
Space-time metric ds2= -dt2+at2dx2+bt2dy2+ct2dz2 (a)how does the area of a rectangle with vertices at ( x=0, y=0, z=0 ), (1,0,0 ), ( 0,1,0 ) and (1,1,0 ) changes with time? (b) if a photon moving in the x direction starts from the origin at t=1, when does it reach x=l? (ds=0 for the trajectory of a photon.) (c) the proper time for a particle is defined by cd=ds. what is the proper time for a particle to move along the trajectory ( x(t)=t, y(t)=0, z(t)=0 ) from t=0 to 1 ? what is the condition on the parameter a so that the velocity of the particle never exceeds the speed of light ?
Answers: 2
Physics, 21.06.2019 22:30
Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.
Answers: 1
Physics, 22.06.2019 11:30
Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?
Answers: 3
Physics, 22.06.2019 12:00
For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up
Answers: 2
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide gre...
Mathematics, 06.05.2020 05:37
Mathematics, 06.05.2020 05:37
Arts, 06.05.2020 05:37
English, 06.05.2020 05:37
Biology, 06.05.2020 05:37
Mathematics, 06.05.2020 05:37
Social Studies, 06.05.2020 05:37
Computers and Technology, 06.05.2020 05:37
Biology, 06.05.2020 05:37