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Suppose a block with a mass of 3.00 x 10^5 kg is being lifted by a crane. The boom of the crane makes an angle of 45 degrees with the back round. If the axis of rotation is the lower end of the boom, the torque produced by the block has a magnitude of 3.20 x 10^7 NxM. Treat the boom's mass as negligible, and calculate the length of the boom.
The aorta carries blood away from the heart at a speed of about 39 cm/s and has a radius of approximately 1.0 cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to the various body organs.
Suppose that the dipole moment associated with an iron atom of an iron bar is 2.7 x 10-23 J/T. Assume that all the atoms in the bar, What is the dipole moment of the bar
A rock is tossed straight up with a speed of 24 m/s. When it returns, it falls into a hole 13 m deep. find the rock's velocity as it hits the bottom of the hole
Calculate the blackbody temperatures (K) from the peak wavelengths given in a) through b), and the peakwavelengths (m) from the temperature given inc)
A key falls from a bridge that is 49 m above the water. It falls directly into a model boat, moving with constant velocity , What is the speed of the boat
An aluminum rod is 23.0 cm long at 20°C and has a mass of 350 g. If 15000 J of energy is added to the rod by heat, what is the change in length of the rod
Two small identical conducting spheres are placed with their centers 0.74 m apart. One is given a charge of 1.2 10-8 C, the other a charge of ?2.2 10-8 C. Find the electrostatic force exerted on one sphere by the other
You're riding a Ferris wheel while sitting on a scale. A Ferris wheel with radius 9.6m has period 34s. The scale reading for a 80kg person at the BOTTOM of the Ferris wheel, assuming a constant rotation rate, is F = 810N. Find the scale reading for a..
a horizontal spring with spring constant of 9.72 nm is attached to a block with a mass of 1.20 kg that sits on a
Amy and Jessie are on a camping trip near a river. Jessie is floating on an inner tube raft, What angle does Amy's boat have to make so that she can follow the path straight to the island
A table in a physics classroom
A projectile is launched with an initial speed of 60 m/s at anangle of 60 degrees. It lands on a hillside 4 seconds later. What is the straight line distance to where it lands
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