When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots occur at ± 17.8 ∘ from the central maximum.?

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false