A meter stick is balanced at the 50 cm mark. You tie 70 N weight at the 30 cm mark. What weight at the 90 cm mark would create a rotational equilibrium?

Which describes the amplitude of a wave? A. the length of a wave from one crest to the next crest B. the height of a wave from its rest position to its crest C. the height of a wave from its crest to its trough D.

A brick has a greater mass than a sponge has. Why is the acceleration due to gravity the same for both objects?

Which of the following has the largest momentum? A. a 10kg dog running down the street at 30mph B. a tightrope walker slowly crossing niagara falls C. a 0.02kg bullet moving down the barrel at 800mph D. a semi truck parked in a parking lot

A 3,000-kg car bumps into a stationary 5,000-kg truck. The velocity of the car before the collision was + 4 m/s and - 1 m/s after the collision. What is the velocity of the truck after the collision?

An infinite charged wire with charge per unit length lambda lies along the central axis of a cylindrical surface of radius r and length. What is the flux through the surface due to the electric field of the charged wire?

Which of the following is true? A depression is a recession that is mild and relatively brief. The expansions and contractions of real world business cycles last varying lengths of time and often differ in magnitude.

A pure lead bar 10 cm long is maintained with one end at T=300 K and the other at 310 K. The thermoelectric potential difference thus induced across the ends is 12.8? V. Find the thermoelectric power for lead in this temperature range

Is there any science behind unicorns / pegasis?

Rays traveling parallel to the principle axis of a concave mirror will reflect out through the mirrors focus? a. true b. false

Which of the mixtures in figure 1 is a solution?