Sun, Neutrons, and half-life

1. The escape velocity of the sun is 618 km/s and no neutron (or any other particle) can be emitted by the sun with a speed of less than this. Calculate the enrgy of a neutron with just this speed, bothexactly and in the classical limit. Taking 10.25 minutes for the halflife of the neutron, what fraction of these solar neutron ...continues

gravitation

(i) Rewrite the equation attached, representing fluid flow in the presence of a buoyancy force... (see attachment)

Mean density of the Earth to that of the Sun

Without using the value of G or the actual value of any masses, estimate the ratio of the mean density of the Earth to that of the Sun... (see attachment)

Electric Charge and Electric Field

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Electric Charge and Electric Field

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Electric Charge and Electric Field

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Relativity, Lorentz transformation

1. Space time coordinate equation 2. Relative motion of a object moving with velocity close to speed of light 3. Four vector description

Electric Potential

What is the electric potential a distance 0.25 m away from a point charge of 1.0 x 10^-9 C? How much work is required to bring an identical charge from very far away up to this distance of 0.25 m from the first charge? Please show work with correct answer!!

Electric Potential

A charge q1= 0.224 μC is initially positioned 3.00 cm directly above a fixed charge q2= 21.6 μC. The charge q1 is moved 6.25 cm straight upward and then moved 7.50 cm horizontally away from the charge q2. What is the change in the electrical potential energy of the movable charge q1? (Question is also included in at ...continues

Electric Potential

Four point charges q = +3.6 μC are arranged in a square of edge length 2.0 cm. What is the electric potential at the center of the square? What is the electric potential at the midpoint of one edge? (Question also included in attachment)