A charge has an initial velocity parallel to the y-axis in E and B fields. Both fields point along the x axis. Which of the following statements regarding the charge's motion are correct?

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Physics & Space Science

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Elementary Particles: What are the possible charges of a quark (not an antiquark)?

A. -e, 0, e B. -2/3 e, -1/3 e, +1/3 e, +2/3 e C. -2/3 e, +1/3 e D. -1/3 e, +2/3 e E. -1/3 e, +1/3 e

Physics & Space Science

Mercury and the Moon appear similar, but we note that:

A) the lunar mare are darker than Mercury's intercrater plains. B) Mercury has "weird terrain" opposite its huge Caloris Basin. C) Mercury has striking lobate scarps due to the shrinking of its core. D) Mercury does not always keep the same face toward the Sun, while the Moon does have the Earthside always facing us. E) All of the above are correct.

Physics & Space Science

A "burning glass" used to concentrate sunlight in a tiny spot is a

A) converging lens. B) diverging lens. C) either of these D) neither of these

Physics & Space Science

A 25-kg block on a horizontal surface is attached to a light spring (force constant = 8.0 kN/m). The block is pulled 10 cm to the right from its equilibrium position and released from rest. When the block has moved 2.0 cm toward its equilibrium position, its kinetic energy is 12 J. What is the change in mechanical energy caused by the frictional force on the block as it moves the 2.0 cm?

a. ?4.0 J b. ?3.5 J c. ?2.4 J d. ?2.9 J e. ?15 J

Physics & Space Science