A2.4 x hz laser emits a 3.5-μs pulse that is 5.0 mm in diameter. the average energy density in the beam is what average power is emitted by this laser? (c = 3.0 × 108 m/s, μ0 = 4π × 10-7 t ∙ m/a, ε0 = 8.85 × 10-12 c2/n ∙ m2)

Which of the following represents an upside-down image?

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors