An irregularly shaped object is attached to an axle so that it may be spun. If a torque of 250Nm must be applied for 1.25s in order to give it a rotation period of 0.10s, what is its moment of inertia?

A. 5.0

B. 31

C. 4.0

D. 25


A. 5.0

Physics & Space Science

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What is the potential difference across C2 when C1 = 5.0 ?F, C2 = 15 ?F, C3 = 30 ?F, and V0 = 24 V?

A. 21 V B. 19 V C. 16 V D. 24 V E. 8.0 V

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A particle (mass = 6.7 × 10^?27 kg, charge = 3.2 × 10^?19 C) moves along the positive x axis with a speed of 4.8 × 10^5 m/s. It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field. What is the magnitude of the electric field?

a. 2.0 kN/C b. 1.5 kN/C c. 1.2 kN/C d. 3.5 kN/C e. 2.4 kN/C

Physics & Space Science

Magnetic Field of a Long Wire: A very long thin wire produces a magnetic field of 0.0020 × 10-4 T at a distance of 1.0 mm from the wire. What is the magnitude of the current? (?0 = 4? × 10-7 T ? m/A)

A. 1.0 mA B. 2.0 mA C. 4000 mA D. 3100 mA

Physics & Space Science

If a piece of wood is suspected to be several thousand years old, its true age can likely be determined through use of the isotope _________

Fill in the blank(s) with correct word

Physics & Space Science