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The paint stirrer shown in Fig. P9.89 consists of two circular disks attached to the end of a thin rod that rotates at 80 rpm. The specific gravity of the paint is SG = 1.1 and its viscosity is μ = 2 × 10-2 lb · s/ft2. Estimate the power required to drive the mixer if the induced motion of the liquid is neglected.
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 74.1 dB. The waves reflected from the walls create, by themselves, an i..
The maximum electric field 8.3 m from a point light source is2.3 V/m. What is the power of the source
A ball is dropped from rest from the top of a building and hits the ground with a speed of v. From ground level a second ball isthrown upwards with the same speed at the same instant the ball at the top is dropped.
a sprinter accelerates uniformly from rest to a speed of 9ms while traveling 18m.a what was thier acceleration?b what
Starting from one oasis, a camel walks 50 km in a direction 30° south of west and then walks 30 km, What is the distance in km between the two oases
what gauge pressure must a pump produce to pump water from the bottom of the grand canyon elevation 730 to indian
Question: What are the two electrical components that can be made out of a variable resistor?
assuming dissipative forces can be ignored how fast will an empty barrel with a radius of 57 cm be moving after
A student sits on a rotating stool holding two 2.2-kg objects. Find the new angular speed of the student
The coefficient of kinetic friction between the object and floor is mu k = 0.30. You will be determining the acceleration of the object. You may assume that the object is sliding to the right in the figure. What is the magnitude of the normal force..
Older televisions display a picture using a device called a cathode ray tube, where electrons are emitted at high speed and collide with a phosphorescent surface, How much time does the electron take to travel from the emission point to the screen
A high-speed lifting mechanism supports a 745-kg object with a steel cable that is 31.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
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