The _______________ supposes that planets form in the rotating disks of gas and dust around young stars

Fill in the blank(s) with correct word


solar nebular theory

Physics & Space Science

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When a wheel is rolling without slipping, the magnitude of its velocity relative to the ground is greatest at

a. the point in contact with the ground. b. the point at the center of the wheel. c. the point at the top of the wheel opposite to the point in contact with the ground. d. the point farthest forward from the center of mass of the wheel. e. the point farthest behind the center of mass of the wheel.

Physics & Space Science

An unusual lightning strike has a vertical portion with a current of -400 A downwards. The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 mT. In N, the force exerted by the Earth's magnetic field on the 25 m-long current is

a. 0. b. 0.012 N, East. c. 0.012 N, West. d. 0.30 N, West. e. 300 N, East.

Physics & Space Science

What power contact lens should be used to correct the vision of a farsighted person whose near point is 80 cm to see something clearly at a distance of 25 cm?

A) 2.8 diopters B) -2.8 diopters C) -4.0 diopters D) -4.2 diopters E) 4.2 diopters

Physics & Space Science

A metal sphere of radius 10 cm carries a charge of +2.0 ?C uniformly distributed over its surface. What is the magnitude of the electric field due to this sphere at a point 5.0 cm outside the sphere's surface? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)

A) 4.0 × 105 N/C B) 8.0 × 105 N/C C) 4.2 × 106 N/C D) 4.0 × 107 N/C E) 8.0 × 107 N/C

Physics & Space Science