The uniform disk of radius r = 0.8 ft and weight w = 20 lb is pin-connected to the link ab and is pulled on its periphery by a force p via a rope that is wrapped around the disk. the coefficient of kinetic friction between the disk and the surface on which it sits is μk = 0: 5. neglect the mass of link ab and assume that μs is insufficient to prevent slipping. for p = 15 lb and θ = 0degree, determine the angular acceleration of the disk αd and the time it takes to achieve an angular velocity of ωd = 35 rad/s, assuming that the disk starts from rest.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank