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How would you expect the circumference of a tree trunk to vary with height above the ground? How would the circumference of a tree branch vary as its distance from the trunk increased? Would the equations of engineering mechanics and strength of materials show a relationship with (a) geometry, (b) shape, and (c) force-gravity and wind? What role would be played by the desire of the tree for sunlight and water?
Three boxes, each of mass 20.0 kg are on a frictionless table, connected by massless strings. What is the net horizontal force on box A
1. A steel cable with total length 20m and mass 100kg is linked to two poles. The tension in the cable is 2,000 N, and the wind makes the cable vibrate by a frequency of 2 Hz. Compute the wavelength of the resulting wave on the cable.
A steady torque of 23-N•m is applied to a grindstone whose moment of inertia is 0.130 kg•m2. Using energy principles, and neglecting friction, determine the angular speed after the grindstone has made 13.0 revolutions.
A spherical rock of mass 4.0 kg is suspended from a cord. A steady horizontal wind pushes the rock so that the cord makes a constant angle of 3.7o with the vertical. Find the horizontal force exerted by the wind.
among the most controversial topics in physical science global warming has received a great deal of attention during
A sprinter is just coming out of the starting block, and only one foot is touching the block. How large is the resultant of these forces
in a potentiometer arrangement a cell of emf 1.25 v gives a balance point at 35.0 cm length of the wire. if the cell is
A sledge loaded with bricks has a total mass of 17.6 kg and is pulled at constant speed by a ropeinclined at 20.9° above thehorizontal. How much work is done by the rope on the sledge
An ideal gas is maintained at a constant pressure of 200 N/m^2 during an isobaric process while its volume decreases by 0.2 m^3. What work is done by the system on it's environment
A dog has thick fur, with a thermal conductivity of 0.040W/(m • K). The dog's metabolism produces heat at a rate of45 W, determine what is the outside temperature
If the first-order maximum for pure wavelength light falling on a double slit is at an angle of 10.0 degrees, What is the angle of the first minimum
The bow of a destroyer undergoessimple harmonic vertical pitching motion with a period of 12.0 sand an amplitude of 2.5 m, What is the magnitude of the maximum acceleration
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