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A turntable rotates with a constant 2.00 rad/s2 angular acceleration. After 4.80 s it has rotated through an angle of 54.0 rad. What was the angular velocity of the wheel at the beginning of the 4.80-s interval?
rad/s
After 0.800, its displacement is found to be 0.13 on the opposite side and it has passed the equilibrium position once throughout this interval.
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, detrermine the age of a piece of solidified lava
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
A point rotates about the origin in the xy plane at a constant radius of 0.114 m and angular velocity of 7.40 rad/s. What is the amplitude of this motion
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 58.0?. Dog A exerts a force of 260N , and dog B exerts a force of 320N
A steel wire of length 1.97 with circular cross section must stretch no more than 0.260 when a tensile (stretching) force of 400 is applied to each end of the wire. What is the minimum diameter necessary.
Four vectors A,B,C ,D and are shown (not to scale). Vector A has magnitude 23.0 and acts at an angle of 14.7 degrees with respect to the positive x axis. find the magnitude and direction of the resultant vector R
A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. What is the buoyancy force on the object when immersed in water
your optometrist recommends that you purchase reading glasses with a refractive powerof 3 diopters. determine the location of your near point or far point
A dentist uses a mirror to examine a tooth. The tooth is 1.04 cm in front of the mirror, and the image is formed 11.1 cm behind the mirror. Determine the mirror's radius of curvature
Calculate g for space shuttle territory. A 7.0×10-2-{rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with the constant speed of 1.30 m/s in a horizontal circle of radius 0.47 m.
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