Lets assume you are trying to tighten a bolt to certain specifications and the wrench you are using does not apply the correct torque. assuming you need to increase the torque by a factor of 2, what could you do? use a wrench with a handle twice the length and apply 1/2 the force. use a wrench with a handle twice the length and apply twice the force. no idea, the angle is not given. use a wrench with a handle twice the length and apply the same force.

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

What is the major limitation to the light microscope?

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants