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A solid disk rotates in the horizontal plane at an angular velocity of 0.042 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.080 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance 0.30 m from the axis. The sand in the ring has a mass of 0.63 kg. After all the sand is in place, what is the angular velocity of the disk?
the outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. relative to this mirror a
Find out the electric field at radius
A 2.5-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the spring/mass system is 2.6 J. Determine is the elastic potential energy of the system when the 2.5-kg block is ..
A cd has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the cd starts from rest and accelerates to an angular velocity of 21 rad / s in 0.8s, Determine the sum of the net torque action on it
A 8 Omega resistor is connected to a 16 V battery. What is the current through the battery
A beam of electrons passes undeflected through two mutually perpendicular electric and magnetic fields. E = 8kV /m and B = 2 × 10?3T. Determine the ratio of the electron charge to mass
A string 1.5m long with a mass of 2.6g is stretched between two fixed points with a tension of 93N. Find the frequency of the fundamental on this string
A pipe has a narrow end compared to the other end. The area of the narrow section is one-half the area of the wide section. find the velocity of the water in the wider section
consider an electric dipole on the x-axis and centered at the origin. at a distance h 22.9 cm along the positive
a beam of electron is that through a small hole into vacuum between two parallel plates wich are separated by a
q1. a hunter aims directly at a target on the same level 84.2m. if the bullet leaves the gun at a speed of 193 ms by
A train with a constant velocity of +28.6 m/s approachesa small town. The operator applies the break, reducing the trainsvelocity to +11.4 m/s. what elapse time does operator apply break
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