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1.01 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.09 rad/s , compute rotational kinetic energy of the rolling hoop in Joules?
A 70 ohm lamp and a 75 ohm lamp are connected in series and placed across a potential of 41 V. What is the equivalent resistance of the circuit
A lens has diameter of 30 mm, What is the lens' theoretical resolution limit (in nm) when it is used in air with light of 550-nm wavelength
The electric motor of a model train accelerates the train from rest to 0.540 m/s in 31.0 ms. Find the average power delivered to the train during its acceleration
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 4.59 ms. Find the magnitude of the average net force that acts on him during this time
A 1.65 kg bowling trophy is held at arm's length, a distance of 0.68 m from the shoulder joint. What is the magnitude of the torque applied by the trophy
The leg and cast weigh 220 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 135 N. find the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. What is the size of the image of the tree on your retina
A 0.2-kg ball is bounced against a wall. It hits the wall with a speed of 20 m/s at a 10 degree angle and rebounds elastically at a 10 degree angle
A 20-kg uniform disk is at rest on a horizontal surface when a horizontal force of F=400N is applied at the center of the disk to the right. Determine the acceleration of the mass center
A block sits on a plate that in turn rests on the surface of a fluid, what is the pressure P in the fluid just below the plate
A certain type of laser emits light that has a frequency of 4.9 × 1014 Hz. How many wavelengths are there in one pulse
an object mass 10.0 kg slides upward on a slippery vertical wall. a force f of 60n acts at an angle of 60 degrees.
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