Incompressible Guides d'étude, Notes de cours & Résumés

PADI Open Water Study Guide Exam Quiz 2024. When is an object positively buoyant? - correct answer When it displaces a volume of water weighing more than its own weight. When is an object negatively buoyant? - correct answer When it displaces a volume of water weighing less than its own weight. When is an object neutrally buoyant? - correct answer When it displaces a volume of water weighing the same as its own weight. Why two pieces of equipment do you use to control your buoyancy? - ...

Describe the result of adding a large positive number and a smaller negative number - result is smaller positive number, same as ignoring the signs and subtracting smaller number How do you convert a fraction into a decimal? - Divide the top number by bottom number What is the key step in order to add or subtract unlike fractions - finding the lowest common denominator How do you divide one fraction by another - Invert divisor (flip over the second fraction) and multiply both numerators an...

When is an object positively buoyant? When it displaces a volume of water weighing more than its own weight. When is an object negatively buoyant? When it displaces a volume of water weighing less than its own weight. When is an object neutrally buoyant? When it displaces a volume of water weighing the same as its own weight. Why two pieces of equipment do you use to control your buoyancy? BCD, Lead weight What does buoyancy help with when you are underwater? Con...

PADI Open Water Dive ExamAn object is positively buoyant when: - correct answer It displaces a volume of water weighing more than its own weight. What two pieces of equipment do you use to control your buoyancy? - correct answer BCD, Lead Weights Buoyancy control is one of the most important skills you can master because it allows you to control where you are in the water. (T/F) - correct answer True An object will be more buoyant in _____ than it would be in _______. - correct answer S...

Intermolecular forces and how they affect physical properties /purification techniques: dipole-dipole, electrostatic, hydrogen, ion, london, - Answer-*dipole-dipole*: polar covalent molecules such as aldehydes and ketones. positive and negative end. polar molecules must be close together for force to be significant. weaker than ion-dipole forces; increase with polarity of molecule. *electrostatic*: occur between charged species, cations and anions, and are responsible for very high MP and B...

Chemistry, 11e (Brown) Chapter 1: Introduction: Matter and Measurement Multiple Choice and Bimodal 1) Solids have a __________ shape and are not appreciably __________. A) definite, compressible B) definite, incompressible C) indefinite, compressible D) indefinite, incompressible E) sharp, convertible Answer: A Diff: 1 Page Ref: Sec. 1.2 2) __________ is the chemical symbol for elemental sodium. A) S B) W C) So D) Na E) Sn Answer: D Diff: 1 Page Ref: Sec. 1.2 3) If matter is u...

The drawing below shows a hydraulic chamber in which a spring (spring constant = 1580 N/m) is attached to the input piston (A1 = 15.0 cm2), and a rock of mass 37.8 kg rests on the output plunger (A2 = 62.8 cm2). The piston and plunger are nearly at the same height, and each has a negligible mass. By how much is the spring compressed from its unstrained position? - convert A1 and A2 to meters^2 (move decimal 4 left) kx/A1 = mg/A2 solve for x A recreational (open) hot air balloon (i.e., Pi...

Describe the result of adding a large positive number and a smaller negative number. A small positive number, and is the same as regular addition How do you convert a fraction into a decimal? Divide numerator by denominator What is the key step that must be performed in order to add or subtract unlike fractions? Find the least common denominator How do you divide one fraction by another? Multiply by the reciprocal How do you convert a decimal into a percent? Mu...

Fluid Mechanics - Exam Review Chapter 1-3 || Complete Questions & Solutions (100% Verified) Fluid Mechanics - Exam Review Chapter 1-3 || Complete Questions & Solutions (100% Verified) Fluid mechanics - ANSWER - Study of fluids at rest (fluid statics) or in motion (fluid dynamics) and the subsequent effects of the fluids on the boundaries (pressure or force) The difference between thermodynamics and fluid mechanics - ANSWER - Thermodynamics deals with systems in equilibrium, most realistic...

PADI Open Water Exam Study Guide When is an object positively buoyant? - correct answer When it displaces a volume of water weighing more than its own weight. When is an object negatively buoyant? - correct answer When it displaces a volume of water weighing less than its own weight. When is an object neutrally buoyant? - correct answer When it displaces a volume of water weighing the same as its own weight. Why two pieces of equipment do you use to control your buoyancy? - correct ans...