A Particle (Mass = 5

question 33

Multiple Choice

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 = 2.5 N/C, Ey = Ez = 0.If the velocity of the particle at t = 0 is given by vy = 50 m/s, vx = vz = 0, what is the speed of the particle at t = 2.0 s?

• A)81 m/s
• B)72 m/s
• C)64 m/s
• D)89 m/s
• E)25 m/s

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Definitions:

σ Molecular Orbital

A symmetrical molecular orbital formed by the head-on overlap of atomic orbitals, where electron density is concentrated along the axis connecting nuclei.

Uracil

A nitrogen-containing base found in RNA which pairs with adenine during the formation of RNA strands.

Hybridization

The process or model by which atomic orbitals mix and form new hybrid orbitals of equivalent energies, explaining the bonding and shape in molecules.

Nitrogens

Chemical elements with the symbol N and atomic number 7, essential for all living organisms.