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Consider a person in the United States who sees the first-quarter phase of the Moon.
(a) Which side of the Moon is illuminated, east or west?
(b) What phase does an observer in Australia see at the same time, and which side is bright?
You are given a concave mirror by focal length 40.0cm. You start with an object 50.0cm high at 160cm in front of the mirror. Draw the system and use the mirror equation to determine the characteristics of the image.
a ferris wheel starts at rest and builds up to a final angular speed of 0.70 rad/s while rotating through an angular displacement of 4.9 rad. What is its average angular acceleration
projectile is shot directly away from Earth's surface. Ignore the rotation of Earth. Find the least initial mechanical energy required at launch if the projectile is to escape Earth
What is the average temperature of the surface of the Sun? How long does it take for light from the Sun to reach Earth? Why do astronauts in the International Space Station feel weightless
An astronaut on a strange planet finds that she can jump a maxhorizontal distance of 16.0 m if her initial speed is 2.00m/s. What is the free- fall acceleration on the planet
a pot of hot water is boiling on your stove. the pot is in the shape of a round cylinder made of aluminum which is 10
An electron in a television picture tube travels at 3 x107 m/s and is acted on both by gravity and by theearth's magnetic field. Which exerts the greater force on the electron
In a certain binary-star system, each star has the same mass which is 9.6 times of that of the Sun, and they revolve about their center of mass. What is their period of revolution in years
Consider a wet roadway banked, where there is a coefficient of static friction of .30 between the tires and the roadway. what is the maximum speed the automobile can have
A hydrogen atom in an excited state returns to the ground state by emitting three photons. Estimate the wavelength of the second photon
A box with a mass of 5 kg initially moving at 3 m/s comes to rest in a distance of 9 m. what is the magnitude of the net force acting on the box
A water pipe having a 2.9 cm inside diameter carries water into the basement of a house at a speed of 0.92 m/s and a pressure of 170 kPa. The pipe tapers to 1.0 cm and rises to the second floor 7.1 m above the input point. The speed at the second flo..
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