The crank ob revolves clockwise at the constant rate ω0 of 6.0 rad/s. for the instant when θ = 90° determine the angular acceleration αbd of the rod bd, which slides through the pivoted collar at c. the angular acceleration is positive if counterclockwise, negative if clockwise.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space. b. we'll know it immediately because it will be brighter than the full moon in the sky. c. we won't know about it until 600 years from now. d. none of the above.

The total amount of energy contained in an object