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Assignment:
Considering the sun's place on the HR diagram and using an understanding of stellar evolution, what would likely happen if the sun was brighter or dimmer than it is? What else would also change if the sun's brightness changed? What implications would those changes have for the planets in our solar system? Life on Earth?
Length scale in physics suppose we model a hydrogen atom as a sphere with a radius of 0.53 A = 5.3 * 10^-11 m . what's the voulme of such an atom? recall that the volume of a sphere is V sphere = 4/3 pi r^3.
question1a hollow spherical shell has mass 8.15 kg and radius 0.220 m. it is firstly at rest and then rotates about a
An ice skater has a moment of inertia of 2.3kg*m^2 , when his arms are tucked in close to his chest
A parallel plate capacitor has a charge on one plate of q = 1.3E-06 C. Each square plate is d1 = 2.2 cm wide and the plates of the capacitor are separated by d2 = 0.65 mm, What is the voltage between the plates
A 12.5-µC particle with a mass 2.80x10-5kg moves perpendicular to a 1.01-T magnetic field in a circular path of radius 21.8m. How fast is the particle moving
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. What are the fractions of muscle and fat in the leg
An AM radio transmitter broadcasts 60.7 kW of power uniformly in all directions. Find the maximum electric field strength at this distance
A certain atom has atomic number Z = 21 and atomic mass number A = 44. How many protons and neutrons are in the nucleus
A meteor is moving at a speed of 32000 km/hr relative to the centre of Earth at a point 560 km from the surface of the Earth. At this time it has a radial velocity of 6400 km/hr. How close does it come to the Earth's surface?
Express the magnitude of the force exerted by water on the person's head F at the depth h in terms of P and A. 25% Part (d) Calculate the numerical value of F.
a frictionless roller coaster starts from rest 24m above the ground. part a whats its speed when it reaches the ground?
A river flows south with a velocity of 20 km/h. A boat has a maximum speed of 50 km/h in still water. In the river, at maximum throttle, the boat heads due west. What are the resultant speed and direction of the boat?
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