mỗi giây có 2,1*10^5 electron đập vào màn hình tivi. cường độ dòng điện trong đèn hình của tivi là bao nhiêu?

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)