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If an Ice skater with moment of inertia of 80 kgm^2 and angular velocity of 4 rad/s reduces her moment of inertia to 60 kgm^2 by adjusting her arms, determine the change in the rotational kinetic energy of the ice skater by adjusting her arms.
a concave spherical mirror has a radius of curvature of magnitude 17.4 cm. a determine the object position for which
An object placed 14.6 cm from a concave mirror produces a real image 7.90 cm from the mirror. where is the new image located as measured from the mirror
a block with a weight of 3.5 n is at rest on a horizontal surface. a 1.2 n upward force is applied to the block by
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
A box of sand, initially at rest, is to be pulled across a floor by means of a cable in which the tension cannot be allowed to exceed 1100N. What should be the angle between the cable and the box in order to pull the greatest mass of sand
The pressure of sulfur dioxide (SO2) is 2.89 x 104 Pa. Find the translational rms speed of the sulfur dioxide molecules
20 kg of water occupy a volume of 1 m^3 in a piston cylinder device at a pressure of 45 bars, Determine the final temperature of the water and Calculate the work and heat involved during this process
if electrical energy costs 12 cents or 0.12 per kilowatt-hour then what would the following events cost?a burning a 40w
A cyclist, traveling at a constant speed, covers a distance of 6860 m in a time period of 34.5 minutes. Calculate the power the cyclist must provide in overcoming that force
A 1.00-cm-high object is placed 3.80 cm to the left of a converging lens of focal length 7.50 cm. Find the position and height of the final image
A small button placed on a horizontal rotating platform with diameter 0.295 m will revolve by the platform when it is brought up to a speed of 30.0 rev/min, provided the button is no more than 0.132 m from the axis.
End A of the bar AB rests on a frictionless horizontal surface, and end B is hinged. A horizontal force vec F of magnitude 107 {rm N} is exerted on end A. You can ignore the weight of the bar. What is the vertical component of the force exerted by..
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