Physics, 12.11.2019 05:31, genyjoannerubiera

# Amarble and a cube are placed at the top of a ramp. starting from rest at the same height, the marble rolls without slipping and the cube slides (no kinetic friction) down the ramp. determine the ratio of the center-of-mass speed of the cube to the center-of-mass speed of the marble at the bottom of the ramp.

Answers: 2

Physics, 21.06.2019 17:10, Bamaboy8804

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 17:10, owlette2001

The average power density carried by the wave in the dielectric medium. a te wave propagating in a dielectric-filled waveguide of unknown permittivity has dimensions a-: 10 cm and b 3. 6 cm. if the x-component of its electric field is given by ex =-36 cos(40mx)sin( sin(2.4m x 10»,-52.9m) (v/m) determine: (a) mode numbers (m, n) (b) er of the material in the guide (c) cutoff frequency (d) expression for h

Answers: 1

Physics, 22.06.2019 01:30, davidoj13

In a house there are 20 filament bulbs each of 100w, three heaters of 2000w & 20 tubes of each 40w. all these appliances work for 5 hours a day and a very high electricity bill has come. what solution you can suggest for this issue? support your answer with proper mathematical explanations

Answers: 1

Physics, 22.06.2019 04:10, anaalashay

Conduct online research and find a website that provides climate data for an area in a biome (for example, the city of barrow, alaska). discuss how conditions in the biome affect the plant and animal life it contains.

Answers: 2

Amarble and a cube are placed at the top of a ramp. starting from rest at the same height, the marbl...

Mathematics, 15.02.2020 03:00