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The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles (helium nuclei, each consisting of 2 protons and 2 neutrons). What is the force between the two alpha particles when they are 6.40 x 10-15 m apart and what is the initial magnitude of the acceleration of the alpha particles due to this force? Note that the mass of an alpha particle is 4.0026 u. show work please.
A 1.67 m tall person lifts a 2.34 kg book from the ground so it is 2.22 m above the ground. Calculate the work done by the person
A loudspeaker of mass 15.0 is suspended a distance of h = 2.30 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30. What is tension in each cable.
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
A car is traveling along a straight road at a velocity of +27.3 m/s when its engine cuts out. For the next 2.57 seconds, the car slows down, and its average acceleration is . For the next 4.47 seconds, the car slows down further, and its average a..
a girl is using a rope to pull a box that weighs 300 N across a level surface with constant velocity. what is the normal force of the floor on the box
A wristwatch has +2 nC of charge deposited at each numeral (representing each hour). The radius of the wristwatch is 3.00 cm. How much work is required to move a proton
How much charge does a battery have to supply to a 5.00 µF capacitor to create a potential difference of 1.20V across its plates
What are the minimum frequencies of light needed to emit electrons off each metal? Suppose a lamp is made which shines light of the exact minimum frequency needed to emit electrons off of gold.
A 640- hollow ball 19 in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 What is the torsional constant of the wire
Two circular hoops, with masses and radii in the ratios m2/m1=4 and R2/R1=4, rotate with angular speeds in the ratio ?2/?1=2. What is the ratio of the kinetic energies K2/K1
Two capacitors, C1 = 32.0 µF and C2 = 4.00 µF, are connected in parallel and charged with a 110-V power supply. Calculate the total energy stored in the two capacitors
1.) A 0.50kg bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog. 2.) A second 0.50kg bullfrog is on a log tilted 38 above horizontal. How large is the normal force of the log on this bullfrog
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