What is the significance of the ozone layer?

What will be an ideal response?


Answer: The ozone layer acts as a filter to reduce the amount of harmful ultraviolet radiation from reaching and penetrating the Earth's surface.

Physics & Space Science

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Which of the following is true of active galaxies?

A) They are often distorted. B) They do not have a black hole. C) They do not have an accretion disk. D) They are much larger than many galaxies.

Physics & Space Science

As a hot iron ring cools, the diameter of the hole

A) increases. B) decreases. C) remains the same.

Physics & Space Science

A photoelectric surface has a work function of 2.10 eV. Calculate the maximum kinetic energy, in eV,

of electrons ejected from this surface by electromagnetic radiation of wavelength 356 nm. (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)

Physics & Space Science

When a damping force is applied to a simple harmonic oscillator which has period T0 in the absence of damping, the new period T is such that

a. T < T0. b. T = T0. c. T > T0. d. ?T < ?0T0. e. ?T > ?0T0.

Physics & Space Science