What is a comet - Study guides, Class notes & Summaries

The solar _____ is the time in the cycle when we see the most sunspots and the solar _____ is the time when we see the fewest sunspots. maximum; minimum Where is debris from meteorites most commonly found? Antarctica If it were possible to harness the entire amount of energy the Sun releases in one second, how many years would we be able to meet the entire world's current power needs? 500,000 Which kind of meteorites have a higher composition of iron and nickel? metal-r...

Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle -answer- D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium -answer- B. SPL The Doppler shift frequency is proportional to the: A. Cosine values B. Doppler angle C. Operat...

The doppler shift is 5000 Hz. The pulse repetition frequency is 9000 Hz. Which of the following is true? A. peak pressure gradient is 36mmHg B. range ambiguity will occur C. aliasing will occur D. the peak velocity is equal to 2 m/s - ️️C. aliasing will occur When evaluating a suspected arterial stenosis, a doppler angel of ____ degrees will produce the most accurate flow velocity. A. 0 B. 30 C. 60 D. 90 - ️️A. 0 Spatial resolution is: A. the minimum reflector separation req...

Which of the following statements best describes the size of the largest asteroid, Ceres? correct answers It is a little less than half the diameter of our Moon. If we could put all the asteroids together, their total mass would be _________. correct answers much less than the mass of any terrestrial planet Why didn't a planet form where the asteroid belt is now located? correct answers Gravitational tugs from Jupiter prevented material from collecting together to form a planet. When y...

CAP Billy Mitchell Aerospace Review 2024 Questions and Answers 100% Pass A heading indicator is also known as a... - Answer- Directional Gyro Which of the following is NOT true regarding microbursts? - Answer- Microbursts usually occur gradually, thus allowing a pilot time to react Which of the following provides energy that caused our atmosphere to move both horizontally and vertically? - Answer- The Sun What rocket was used to launch the first manned Apollo mission, Apollo 7? - Answer- ...

ARDMS SPI Exam |Questions and Verified Answers| 100% Correct| Grade A (Latest 2023/ 2024 Update) Q: what does coded excitation improve in addition to penetration? A. lateral resolution B. signal-to-noise ratio C. frame rate D. dynamic range Answer: B Q: how is lateral resolution determined for a pulsed-echo system using a tissue-mimicking test object? A. by observing spaces between reflectors perpendicular to the beam B. by observing spaces between reflectors along the beam path ...

SPI Ultrasound Physics Review Exam - Questions and Answers Relates to likelihood of harmful bio effects from cavitation Mechanical index Predicts maximum temperature increase Thermal index Measures output intensity of the beam Hydrophone Region of increased brightness due to higher intensities in focal zone Focal banding Occurs when sound travels through a medium with a lower attenuation rate than the surrounding tissue Enhancement Beam travels through an area of high attenuation Shadowing Bea...

The solar _____ is the time in the cycle when we see the most sunspots and the solar _____ is the time when we see the fewest sunspots. maximum; minimum Where is debris from meteorites most commonly found? Antarctica If it were possible to harness the entire amount of energy the Sun releases in one second, how many years would we be able to meet the entire world's current power needs? 500,000 Which kind of meteorites have a higher composition of iron and nickel? metal-r...

Astronomy Exam #1 Questions With Complete Solutions. What is a star? A star is a large luminous ball of gas that generates heat and light through nuclear fusion. What is a planet? A planet is a moderately large object that orbits a star. It shines by reflected light. Planets may be icy or rocky What is a moon? A moon (or satellite) is an object that orbits the planet. What is an asteroid? An asteroid is a small and ROCKY object that orbits a star. What is a comet? A comet is small a...

billy mitchell aerospace exam questions and answers 100% pass Location of space - Answer- Beyond the influence of earth Micro gravity - Answer- small or low gravity Cislunar space - Answer- the space between the earth and the moon interstellar space - Answer- the distance from one solar system to another interplanetary space - Answer- the space from the center of the sun to the orbit of Pluto galaxy - Answer- an enormous collection of starts arranged in a particular shape universe - Answ...