Category: Physics

What does it mean if the bottom number of your blood pressure is over 100? The next stage of hypertension, stage 2 hypertension, is diagnosed when your systolic pressure is 160 mm Hg or higher or your diastolic pressure is 100 mm Hg or higher. A diagnosis of hypertension means that you need treatment to […]

What acetone Cannot dissolve? Many kinds of plastic do not dissolve in acetone. Polypropylene and nylon are unaffected, PTFE unsurprisingly handles it just fine as well. Two kinds of plastic that do dissolve in acetone are PVC and polystyrene. Why is nail polish soluble in acetone but not in water? Nail varnish does not dissolve […]

How do you write a comforting message? Examples “We are so sorry for your loss.” “I’m going to miss her, too.” “I hope you feel surrounded by much love.” “Sharing in your sadness as you remember Dan.” “Sending healing prayers and comforting hugs. “With deepest sympathy as you remember Robert.” “I was saddened to hear […]

How do you measure wind speed without an anemometer? A much simpler way to measure wind speed is with a ribbon tied to a stick. Once calibrated, the device will allow the casual kite-flyer or sailor an indication of the wind speed. Place the three ribbons on top of each other and tie them together […]

What do the 4 macromolecules do? Nucleic acids: Stores and transfers info. Carbohydrates; Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall. Lipid: Insulator and stores fat and energy. Protein: Provide structural support,transport, enzymes, movement, defense. Which macromolecules can you live without? Carbohydrates and lipids make […]

What is required for charges to leave an object? The object being charged ends up with a charge which is the opposite of the object being used to charge it. A ground must be used to charge on the object. The ground allows for electron movement into or out of the object being charged. When […]

What is the Continental Divide and what is its purpose? A continental divide is a boundary that separates a continent’s river systems. Each river system feeds into a distinct ocean, bay, or sea. The Loveland Pass, pictured here, is a continental divide in Colorado that separates water flowing into the Atlantic and Pacific ocean basins. […]

Does touch up paint last? Touch Up Paint Should Last At Least 4-5 Years The smaller the damage, the better the application, the more likely the touch-up paint will last until you’re ready to move on to another car. You still need to wash and wax the car. And if other scratches or damage occur, […]

What happens when two forces are exerted in opposite direction? 1. Opposite direction :- The object do not moves his place because When the two forces act in the opposite direction , the force get cancelled when a force of same magnitude is applied on opposite direction . What happens if balanced forces are applied […]

How do plants lift water? Hydraulic lift is the passive movement of water from roots into soil layers with lower water potential, while other parts of the root system in moister soil layers, usually at depth, are absorbing water. What is hydraulic conductivity used for? Hydraulic conductivity is a physical property which measures the ability […]