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A solid disk rotates in the horizontal plane atan angular velocity of 0.067 rad/s with respect to an axis perpendicular to the disk at tis center. The moment of inertia ofthe disk is 0.10 kg·m2. From above, sand is dropped straightdown onto this rotating disk, so that a thin uniform ring of sandis formed at a distance of 0.40m from the axis. The sand in thering has a mass of 0.50kg. After all the sand is in place, what is the angular velocity of the disk?
A 45.0-kg girl is standing on a 133-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the surface of ice
q1. what is the theoretical maximum amount of ice that the freezer might make per hour starting with water at 20 ?c?q2.
An ideal gas of p=1000 hPa, V=1 m3, T=20 C undergoes the following successive changes: (1) it is warmed under constant pressure until its volume double, (2) it is warmed under constant volume until its pressure doubles, and (3) it expands isothermall..
Imagine your car is powered by a fusion engine in which the following reaction occurs: 31H2 ---->2He4 + 1H1 + 0n1 The atomic masses are 1H2 ( 2.0141 u), 2He4 (4.0026 u), 1H1 (1.0078 u), and 0n1 (1.0087 u). The engine uses 4.28 x 10-6 kg of deuterium ..
question1a block of mass m1 4 kg moves from rest under the influence of a varying force fx 4x 38 where f is in
Consider a one-dimensional particle of mass m feeling the inverse harmonic oscillator potential V=-1/2kx^2 (k>0)
Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air, What is the angle between the beams travelling through the material
A charge q is distributed uniformly around a thin ring of radius r, What is the magnitude of the magnetic moment of the rotating charge
A light pipe consists of a central strand of material surrounded by an outer coating. The interior portion of the pipe has an index of refraction of 1.60 .
The acceleration of a particle is given by ax(t)=? 1.90m/s2 +( 2.90m/s3 )t, Find the initial velocity v0x such that the particle will have the same x-coordinate at time t= 4.04s
An object fired at an angle of 39 degrees above horizontal takes 1.10 s to travel the last 12.5 m of its vertical distance, determine With what velocity was the object launched
A Force F= (6xi+ 5yj), where F is in newtons and x and y are in meters, acts on an object as the object moves in the x direction, Find the work W = integral (F · d vector r) done by the force on the object
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