Category: Physics

How much force is required to close a door? Interior Doors – 5 pounds of force. Exterior Doors – 15 pounds of force – Massachusetts AAB 521 CMR only – the ADA and A117. 1 do not include a requirement for exterior doors. Sliding or Folding Doors – 5 pounds of force. Which force is […]

What is the height of water? Depth and hydrostatic pressure Height of Water Column Pressure (m) (ft) (psi) 2 6.56 2.85 3 9.84 4.27 4 13.1 5.69 Can the height of a column of water be used to determine pressure? In a barometer, the height, h, of the column of liquid is used as a […]

What is the difference between heat transfer by conduction and convection? In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. The heat transfer occurs through a heated solid object. What is the difference between conduction and convection name one medium in? hope this helps. […]

What is the term for the angle at which light undergoes total internal reflection? This angle of incidence is known as the critical angle; it is the largest angle of incidence for which refraction can still occur. For any angle of incidence greater than the critical angle, light will undergo total internal reflection. Which of […]

What is difference between PCT and DCT? PCT occurs after the Bowman’s capsule while DCT occurs after the loop of Henle. PCT is mainly involved in the reabsorption whereas secretion occurs in the DCT. The main difference between PCT and DCT is that PCT is the function of each part in the nephron. Which is […]

What does it mean to find the inverse of a function? An inverse function is a function that undoes the action of the another function. A function g is the inverse of a function f if whenever y=f(x) then x=g(y). In other words, applying f and then g is the same thing as doing nothing. […]

How does inertia apply to bowling? The inertia of the bowling ball, when rolled down the lane, will resist the change in its motion. The ball will continue to roll until acted upon by a greater force. When a ball is rolled down a carpet lane with nothing in its way, the ball will come […]

Will an MRI show Achilles tendonitis? An MRI doesn’t just show the Achilles tendon, but it also demonstrates the degree to which there is damage or degeneration present. The exam itself is very straightforward for the patient. Will an xray show Achilles tendonitis? A physical exam of your Achilles tendon to check for bone spurs, […]

How does the 1st and 2nd law of thermodynamics apply to biological systems? Two fundamental concepts govern energy as it relates to living organisms: the First Law of Thermodynamics states that total energy in a closed system is neither lost nor gained — it is only transformed. The Second Law of Thermodynamics states that entropy […]

What is angular momentum of a particle? The angular momentum of a rigid object is defined as the product of the moment of inertia and the angular velocity. It is analogous to linear momentum and is subject to the fundamental constraints of the conservation of angular momentum principle if there is no external torque on […]