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
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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
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
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
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