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The most abundant isotope of lithium, Li-7, contains three protons and four neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units? In kilograms?
A 0.250 kg ball attached to a string s being swung in a vertical circle, like a roller coaster doing a loop-de-loop, with a radius of 1.15 m. What is the minimum speed at the top of the circle to keep the string from going slack
A light bulb is placed 18.3 cm in front of a concave mirror. When the concave mirror is replaced by a plane mirror in the same location, Calculate the focal length of the concave mirror
A group of students determined that the following points were upon the best fit line for a graph of W2 vs. Determine the total mass of the system
An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. compute the density of the object.
A 70 cm long, 0.8 mm diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched
A spring is compressed by 0.0748 m and is used to launch an object horizontally with a speed of 2.64 m/s. at what angular frequency (in rad/s) would it oscillate
A particle has initial velocity 5 m/s due east and acceleration 2 m/s^2 due west. Find the distance traveled during 3rd second of the motion.
A ceiling fan with 80-diameter blades is turning at 68. Suppose the fan coasts to a stop 27 after being turned off. What is the speed of the tip of the blade 10 after the fan is turned off.
A 5 kg piece of metal displaces 0.75 L of water when submerged. What is the buoyant force on the piece of metal
Two blocks of weights 77.0 and 114.0 N are connected by as massless string and slide down an inclined plane making an angle of 45.0 deg, find the magnitude of the heavier block's acceleration
A parallel-plate capacitor has fixed charges q and -q. The seperation of the plates is then doubled. How much work must be done in doubling the plate seperation from d to 2d
The membrane that surrounds a certain type of living cell has a surface area of 6.1 x 10-9 m2 and a thickness of 1.3 x 10-8 m. how many such ions are present on the outer surface?
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