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The moon barely covers the sun at a solar eclipse. Given that the moon is 4 X 105 kilometer from Earth and that the Sun is 1.5 X 108 kilometer from Earth, find how much bigger the Sun diameter is than the moon. If the moon radius is 1800 kilometer, determine how big is the Sun?
An electron is accelerated from rest through a potential difference of 2.50 kV. What would be its de Broglie Wavelength
An owl is chasing a squirrel and is using echolocation (the reflection of sound) to aid in the hunt. If the squirrel is 40.5 m from the owl, how long does it take sound to travel from the owl to the squirrel and then back to the owl? (Use 343m/s a..
The magnetic field 45.0 cm away from a long, straight wire carrying current 8.00 A is 2.00 µT. At what distance is it one-tenth as large
A block of mass 77 g floats on a fluid, oscillating up and down at a frequency of 8 Hz. What is the value (in N/m) of the effective spring constant of the fluid
Two solid spheres simultaneously start rolling( from rest) downan incline. One sphere has twice the radius and twice the mass ofthe other. Which has the greater total kineticenergy at the bottom
a golf ball is struck with a five iron on level ground. it lands 92.7m away 4.20s later. what was a the direction and b
two ping-pong balls each have a mass of 2.7 g and carry a net charge of 0.430 microc. one ball is held fixed. at what
Object at rest, height in 180 feet Consider the following free fall classical motion and answer these questions based on the information. What is the classification of this motion and why
In exercise physiology studies, it is sometimes important to determine the location of a person's center of gravity. How far from the woman's feet is her center of gravity
A semiconductor (GaAs) laser emitting at 800 nm has a 400 micrometer cavity length with a refractive index n=3.6. If the gaing exceeds the total loss αt throughout the range 750 nm
Two 2.00 cm diameter disks spaced 2.239 mm apart from a parallel plate capacitor. The electric field between the disks is 445,140.438 V/m. What was the electron's speed as it left the negative plate
a carousel is free to rotate about its center onfrictionless bearings the carousel has an angular speed of 3.14rad/s , a moment of inertia of 125 kg/m^2, what is the resulting angular speed of the carousel and the person
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