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In a real or imaginary nucleus of 51 x ^108,
a) how many protons are in the nucleus,
b) how many neutrons are in the nucleus, and
c) how many electrons are in orbit around the nucleus, assuming the atom is electrically neutral?
A mass of 0.8kg is located at the end of a very light and rigid rod 50 cm in length. What is the rotational inertia of the system
A car of mass 2200 kg collides with a truck of mass 4800 kg, and just after the collision the car and truck slide along, stuck together. find the velocity of the stuck-together car and truck just after the collision
The temperature of the surface of a certain star is 7500K. Most hydrogen atoms at the surface of star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could e..
A boat crosses a 500 m river. The water run at 5.9527 m/s due east. The boat is able to travel at 5 m/s relative to the water. what is the net displacement along the river bank
A group of hikers hear an echo 2.50 s after they shout. If the temperature is 28°C, how far away is the mountain that reflected the sound wave.
You are standing on a brigde that is 50.0 m above a dried up riverbed. what is the minimum spring constant that the bungee cord must have for you not to hit the riverbed
When kicked, the ball leaves the ground with a speed of 29.0 m/s at an angle of 51° to the horizontal. Explain by how much does the ball clear or fall short of the crossbar?
A 200-g mass resting on a horizontal frictionless surface is attached to a spring of spring constant 35 N/m. What is the angular frequency of the oscillations
A sample of paramagnetic material containing \(10^{25}\) atoms is placed in an external field magnetic field of 1 tesla at room temperature
A 2 cm cube of aluminum has a mass of 22 grams. Calculate the density of this aluminum square in grams per cubic centimeters (gm/cm 3 ).
Consider neon, a noble gas whose molecules consist of single atoms of atomic mass 0.02 kg/mol. What is the root-mean-square speed of a neon atom under such conditions
Calculate the gravitational force on a spacecraft 8700km above the Earth's surface if its mass is 1200kg
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