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An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are separated by 10 to the -9 meters?
A rainbow trout is an extremely cautious fish constantly monitoring the surface of the stream looking for both food and predators. A trout escapes immediately, once noticing something suspicious, like a fisherman caring his fishing gears.
Discover the tensions in the rope
Two atomic particles approach each other in a head-on collision. Each particle has a mass of 1.77 x 10-25 kg. The speed of each particle is 1.94 x 108 m/s when measured by an observer standing in the laboratory.
Imagine a perfectly elastic collision between to masses. Mass m1 is moving horizontally to the right at v0 towards mass m2. Calculate the recoil angle of m2 and the recoil speed of m2
the plates of a parallel-plate capacitor have a separation of 5.20mm and each has an area of 15.0cm2 . each plate
In the figure (Figure 1) the upper ball is released from rest, collides with the stationary lower ball, and sticks to it. The strings are both 48.0 long. The upper ball has mass is 1.80 and it is initially 10.0 higher than the lower ball, which ha..
The average resistivity of the human body (apart from surface resistance of the skin) is about 5.5 ?·m. What is the resistance between the hands if the skin resistance is negligible
markings to indicate length are placed on a steel tape in a room that is at a temperature of 22degc. measurements are
a 120 g copper calorimeter cup contains 220 cm3 of water and 35 g of ice all in thermal equilibrium. a 185 g piece of
a 43.5 kg boy and a 56.0 kg girl are on the surface of a frozen lake 15.0 m apart. using a rope the boy exerts a
A 143 O lamp, a 29 O electric heater, and a O 53 fan are connected in parallel across a 135 V line. What power is expended in the heater
a rock of mass 45kg accidentally breaks loose from the edge ofa cliff and falls straight down. evaluate the magnitude of the acceleration of the rock
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