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A high-speed lifting mechanism supports a 845-kg object with a steel cable that is 40.0 m long and 4.00 cm2 in cross-sectional area. (a) Determine the elongation of the cable. mm (b) By what additional amount does the cable increase in length if the object is accelerated upwards at a rate of 2.6 m/s2? mm (c) What is the greatest mass that can be accelerated upward at 2.6 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, which is 2.2 108 Pa? kg
A light wave has a 670{\rm nm} wavelength in air. Its wavelength in a transparent solid is 420{\rm nm}. What is the light's frequency in the solid
A 1 170.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 800.0 kg truck moving in the same direction at 20.000 m/s. What is the change in mechanical energy of the car-truck system
The bright yellow sodium line in the sodium spectrum is actually a pair of closely spaced lines at 589.0 nm and 589.6 nm. Find the angular separation between the two sodium lines in second order
An 8.0-kg block is set moving with an initial speed of 6.0 m/s on a rough horizontal surface. how far does the block travel before it stops
Two disks of identical mass but different radii (r and 2r) are spinning on frictionless bearings at the same angular speed ?0, but in opposite directions. The two disks are brought slowly together. The resulting frictional force between the surfac..
An inquisitive physics student and mountain climber climbs a 55 m cliff that overhangs a calm pool of water. She throws two stones vertically downward 0.8 s apart and observes that they cause a single splash.
A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. Find the smallest value for the angle , such that the lower end of the board does not slide along the ground
Illustrate what management's role in addressing these challenges. Illustrate what type of information technology would increase production?
a 10 kg box is pulled for 3.60 m along a level surface by a rope that makes an angle of 37 degrees above the horizontal. Find the work done by each force on the box
A span of a bridge is 200.00m at 10.0c Its length increases to 200.25m when the temperature increases to 40.0c. what is the coefficient of thernmal expansion of the material
q. consider an infinite wire with radius r that carries a current ia compute b r for r lt rconsider a large parallel
A skier moving at 4.60m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. How far does she travel on this patch before stopping?
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