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Write a 700- to 1,000-word paper on the importance of physical security design, concepts, and evaluation. Paper must be done in APA format
A 22.5 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.29 cm from the end of the screwdriver blade and a force of 79 N is exerted at the end of the screwdriver’s handle, what force is applied to the lid? Answer in unit..
A conducting spherical shell of inner radius of a and outer radius b carries a net charge Q. find the surface charge density on the outer surface of the shell
Just after opening a parachute of negligible mass, a parachutist of mass 82.5 kg experiences an instantaneous upward acceleration of 1.15 m/s2. Find the force of the air on the parachute
A spring stretches by 0.0165 meter when a 4.01 kilogram object is suspended from its end. Find how much mass should be attached to this spring
If a bus you are riding is traveling at a constant speed and then stops abruptly, you feel "thrown” forward. Which of the following is true at the instant the bus begins to stop? Suppose the seat is frictionless and that you are not wearing a seatbel..
Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring among them, as seen in the figure below.
You are arguing over a cell phone while trailing an unmarked police car by 26.0 m; both your car and the police car aretraveling at 110 km/h. Your argument diverts your attention fromthe police car for 2.0 s (long enough for you to look at the pho..
A block on a 30 degree incline has an initial velocity of 3.5 m/s up the incline. How long until it returns to where it started from
A 1.5m -long barbell has a 22kg weight on its left end and a 35kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched an extra 1.8 cm. How does the work required for the second stretch compare to the work needed for the first stretch (give a ratio of second to first)? (Be sure you ar..
a particle in the xy plane is attracted to the origin by a force f -kyr calculate the work done by the force as the
In some places, insect "zappers", with their blue lights, are afamiliar sight on summer nights. These devices use a high voltageto electrocute insects. One such device uses an ac voltage of 4310V, which is obtained from a secondary 120 V outlet by me..
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