An Electric Field and a Magnetic Field Are at Right

question 30

Multiple Choice

An electric field and a magnetic field are at right angles to each other and to the direction of a beam of electrons. There is no deflection of the beam when the magnitudes of the fields are 30 *10⁴ V/m and 2.0 *10^-3 T, respectively. The velocity of the electrons must be approximately

• A) 0.60 km/s
• B) 6.7 * 10^-8 m/s
• C) 2.3 * 10¹⁶ m/s
• D) 1.5 * 10⁸ m/s
• E) 1.5* 10^-8 m/s

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Definitions:

Straight-Line Method

The straight-line method is a depreciation technique that allocates an even amount of depreciation expense over the useful life of an asset.

Amortization of Bond Discount

The gradual reduction or write-off of the difference between the face value and the lower issuing price of a bond over its term, impacting the issuer's financial statements.

Interest Expense

The financial obligation incurred from borrowing money over a set time frame.

Straight-Line Amortization

Straight-line amortization is a method of gradually reducing the cost of an intangible asset over its useful life in equal annual amounts.