In size and mass, irregular galaxies tend to be ________ than spirals

Fill in the blank(s) with correct word


smaller

Physics & Space Science

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What does E0 = mc 2 describe?

a. The kinetic energy of an object of mass m moving at speed v. b. The kinetic energy of an object of mass m moving at speed c. c. The equivalence of mass and energy. d. The form taken by Newton's second law at relativistic speeds. e. The relativistic mass.

Physics & Space Science

Which of the following is characteristic of mountain stream valleys?

A) They are curvy and slow moving. B) They are V-shaped and have rapids. C) They have deltas. D) They are deep and wide.

Physics & Space Science

Velocity Selector: A beam of electrons is accelerated through a potential difference of 1.0 kV before entering a velocity selector. If the magnetic field of the velocity selector has a magnitude of 0.010 T, what magnitude of the electric field is required if the electrons are not to be deflected as they pass through the velocity selector? (e = 1.60 × 10-19 C, melectron = 9.11 × 10-31 kg)

A. 5.9 × 103 V/m B. 1.9 × 105 V/m C. 6.0 × 105 V/m D. 7.2 × 106 V/m E. 1.1 × 105 V/m

Physics & Space Science

How large should a wall-mounted mirror be to view the upper half of one's height, h?

a. h b. h/2 c. h/4 d. The answer is not given.

Physics & Space Science