Answered

Suriin ang malawak na saklaw ng mga paksa at makakuha ng mga sagot sa IDNStudy.com. Anuman ang kahirapan ng iyong mga tanong, ang aming komunidad ay may mga sagot na kailangan mo.

radio waves travel at a speed of 1.7x10^8 m/s through ice. A radio wave pulse sent into antarctic ice  reflects off earth at the bottom and returns to the surface in 32.9x10^-6 s. how deep is the ice?

Sagot :

Kaiusidn
Let 32.9 × 10^-6 s be the total time of radiowaves going back and forth, Let X be the time going down and (32.9 × 10^-6) - X the time going back. We assume the distance going forward and back is equal, we use the formulas: X = VoT + (1/2)AT^2 and V = D/T. Substituting the values: (1/2)(9.8 m/s^2)(4 - X)^2 = (1.7 × 10^8 m/s)(X) --> Using the calculator, we find: X = 4.40 × 10^-7. Then we multiply with the speed to find the depth of the ice: 74.8 m.