A meson at rest decays 2 microsec.after it is created.If moving in laboratory at 0.99c(velocity of light)

its lifetime accordin to laboratory clock would be: A. the same B.0.28ms C.14microsec D. 4.6 s

harmandeepkaur-randhawa

over 4 years ago

Science education

Be the first to answer this question!

"A meson when at rest decays 2µs after it is created. If moving in the laboratory at 0.99c, its lifetime according to laboratory clocks would be: "

"A. the sameB. 0.28siC. 14µsD. 4.6sE. none of these"

borich

over 11 years ago

Physics

"A sou RC e at rest emits light of wavelength 500nm. When it is moving at 0.90cawayfrom an observer, the observer detects light of wavelength: "

"A. 26nmB. 115nmC. 500nmD. 2200nmE. 9500nm"

karthur

over 11 years ago

Physics

"A sou RC e at rest emits light of wavelength 500nm. When it is moving at 0.90c toward an observer, the observer detects light of wavelength: "

"A. 26nmB. 115nmC. 500nmD. 2200nmE. 9500nm"

wilbur

over 11 years ago

Physics

"A baryon with strangeness−1 decays via the strong interaction into two particles, one of which is a baryon with strangeness 0. The other might be:"

"A. a baryon with strangeness 0B. a baryon with strangeness +1C. a meson with strangeness−1D. a meson with strangeness +1E. a meson with strangeness 0"

ryangosling

over 11 years ago

Physics

Physics question regarding mass moving on a ramp?

"There is a ramp on a frictionless surface (not attached) with a 12 Kg mass on top, the ramp is 18Kg. Both objects are initially at rest, then the mass starts to slide down the ramp (The height is 20m). Find the velocity of the mass and ramp once the mass hits the ground.I got roughly 19m/s for the mass once it hits the ground, I'm confused about the ramp, from what I learned technically the Fnet on it does not change (Only Fg and Fn on both the ramp and mass), and since v1 = 0 and it does not accelerate it will remain at 0m/s. Can someone either confirm my answer or shed some light as to why I'm incorrect?"

Search questions by subject