Precession Study guides, Class notes & Summaries

ARMRIT Correct Questions and AnswDifferent tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - ANSWER isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum - ANSWER precession magnetic resonance imaging is derived f...

Clemson Univ Geology 1010 (Coulson) -- Exam 3 100% Correct Positive feedback Change in the 2nd component (B) enhances the change in the 1st component (A) For Example: Lower the temp > Ice forms > Temp drops again Negative Feedback Change to 2nd component (B) offsets the initial change in 1st component (A) For Example: You do poorly on exam 1, so you start to study more. You then do better on the exam 2, so you start to slack off, and thus do poorly on the exam 3. Insolation Heat energy...

Astr205-Short Quiz 1 - Short answer quiz 1 Exam Questions With Answers 1. A tomb has recently been unearthed in Egypt that shows a set of wall paintings and hieroglyphics of stars falling to and rising above the horizon over the course of the year. (In Egyptian mythology, these stars served as sentinels for the pharaoh’s passage through the underworld.) How would astronomers use this data to date the tomb? Astronomers would use precession to date the tomb in Egypt. Precession refers to t...

The most common type of magnet used in today's MR systems is the _______________. A. resistive magnet B. permanent magnet C. superconducting magnet D. open MR scanner correct answers C. superconducting magnet The positively charged part of an atom is the _____________. A. electron B. neutron C. proton D. nucleus correct answers C. proton When a hydrogen nucleus is positively charged and spins, it generates a small magnetic field called a _____________. A. larmor equation ...

SCI 225 - Exam 2: Study GuideMilankovitch - correct answer related orbital cycles to ice ages charting the ice ages of the Pleistocene - correct answer method by which Milankovitch developed model of Earth's movement and climate change Milankovitch cycles - correct answer eccentricity, obliquity, precession heat, cold - correct answer in relation to eccentricity, _ causes change, not _ Perihelion - correct answer the moment when the Earth is the closest to the sun in its orbit Ap...

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - ANSWER-isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum - ANSWER-precession magnetic resonance imaging is derived from the process known as: A) ma...

PHSC 102 Midterm Exam Questions and Answers All Correct A solar eclipse can only happen during a _______ moon. - Answer-c. New ________ is the change in an object's apparent position when viewed from two different locations. - Answer-b. Parallax That fact that Polaris will not always be the pole star is due to: - Answer-a. precession shifting the celestial pole. T/F A solar day is four minutes longer than a sidereal day. - Answer-True The seasons of the Earth result from: - Answ...

PHSC 121 Exam 3 with A Grade Solutions We have seasons because... a. The earth's axis of rotation is tilted 23.5 degrees relative to the ecliptic b. the earth's axis faces the north pole toward the sun when the earth is closest to the sun, in Jan. c. The earth-sun distance decreases to a min in July - Answer-a Which is true of the vernal equinox? a. latitudes south of the Antarctic Circle see no sun for 24 hours b. The Sun is now crossing the equator into the north hemisphere and...

SCI 225biological species concept - correct answer group of populations whose members have the potential to produce fertile offspring. Species richness - correct answer the number of different species in a community Species evenness - correct answer relative abundance of each species Reasons for more species at equator - correct answer Climate stability, primary productivity How to measure biodiversity - correct answer collection of diff species in particular location long term cl...

Private Pilot Oral/Check Ride Exam Questions with Correct Answers Flight Controls - Correct Answer Ailron-regulates aircraft roll Rutter-makes horizontal course changes-on tail Elevator-helps ascend/descend aircraft-on tail Gyroscopic Instruments - Correct Answer Turn Coordinator Heading Indicator Attitude Indicator Pitot-Static Instruments - Correct Answer Airspeed Indicator Vertical Speed Indicator Altimeter 4 Forces of Flight - Correct Answer Lift Weight Thrust Drag Wha...