The figure below shows the orbit of a comet about the sun. The comet has the greatest velocity when traveling



A. from A to B.

B. from B to C.

C. from C to D.

D. from D to E.


A. from A to B.

Physics & Space Science

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A radiating body originally has a Kelvin temperature To, and its surroundings are at 500K (To > 500K). If the Kelvin temperature of the radiating body is increased to 3To,

the net rate at which the body radiates increases by a factor of 333. What was the original temperature To?

Physics & Space Science

A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?5.5 N/C, Ey = Ez = 0 . If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz = 0, what is the distance from the origin to the particle at t = 2.0 s?

a. 60 m b. 28 m c. 44 m d. 12 m e. 88 m

Physics & Space Science

The elapsed time between two successive crossings of the same meridian by the Sun is known as the ______________ solar day

Fill in the blank(s) with correct word

Physics & Space Science

Which of the following deformation processes is best suited to producing automobile engine piston rods?

(a) Rolling (b) Extrusion (c) Drawing (d) Forging

Physics & Space Science