Determine the constant angular velocity θ˙ of the vertical shaft of the amusement ride if ϕ = 50 ∘. Neglect the mass of the cables and the size of the passeng

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called