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23 Cards in this Set
- Front
- Back
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What is the charge on an electron?
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1.6 * 10 ^ -19 C
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What is the formula for electric force? (the force one charge has on another)
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F=kQq/ r^2
where k= 9 *10^9 |
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What is the formula for electric field?
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E= kQ/ r^2
k= 9* 10^9 |
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How is the direction of the electric field determined?
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by what a small positive test charge would do.
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What is the relation between electric field and electric force?
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F=qE
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How is electric potential useful?
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It can be used to answer questions about scalar quantities, like energy, work, and speed,
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What is the formula for electric potential?
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phi= kQ/r
where k= 9* 10^9 |
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How is change in potential energy related to electric potential?
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DeltaPE= qV
where V=change in potential |
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What is momentum?
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p=mv
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what is impulse?
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Impulse (J)= Δp
J= FΔt Can be shown on graph as area under a force vs. time plot. |
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What is an elastic collision?
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KE is conserved (frictionless)
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What is a perfectly inelastic collision?
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the two bodies stick together after colliding
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What occurs during the collision?
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The force on A = Force on B
ma= -m'a' |
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What is power?
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Work per unit time. Measured in watts.
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what is kinetic energy?
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KE= 1/2 mv^2
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How does work relate to kinetic energy?
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W=ΔKE
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What is the unit for energy?
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Joules
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What is a Joule?
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Nm
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What is the gravitational potential energy?
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PE= mgh
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What is a conservative force?
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path independent.
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What is conduction?
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transfer of heat by direct contact.
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What is convection?
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transfer of heat through a fluid.
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What is radiation?
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transfer of heat through electromagnetic waves.
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