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A 5.0 kig block is hung from the ceiling on a 2.0-meter-long wire with a mass of 4 g. The wire is "plucked" at the very bottom, where it connects to the block. How long does it take the pulse to reach the ceiling?
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. With what initial velocity were the keys thrown
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
As part of a safety investigation, two 1200 {rm kg} cars traveling at 24 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 {rm s} to stop, and (b) car that hits a..
A scuba diver and her gear displace a volume of 70.0L and have a total mass of 73.1kg. What is the buoyant force on the diver in sea water
After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. Calculate the average density of the white dwarf
In order to manufacture these coffee tables, the company would need to incur $525,000 in fixed costs for new equipment. Calculate the break-even point of the coffee tables in units sold. Illustrate what would be the total revenue at the break-even po..
How far east of his starting point will he reach the opposite bank? What is the magnitude of his velocity relative to the earth.
After the first spring compresses a distance of 33cm, second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 53.0 cm after first contacting the two-spring system. Find the car's initial spee..
In each of the four scenarios, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. what return frequency will the large bat detect
On an icy road, a 1200 kg car moving at 55 km/h strikes a 430 kg truck moving in the same direction at 43 km/h. Find the speed of the wreckage
In an advanced laboratory class a student performs the photoelectric experiment. What is Planck's constant based on this measurement
Suppose that an electron is trapped within a small region and the uncertainty in its position is 7.20 multiply.gif 10-15 m, find the minimum uncertainty in the electron's momentum
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