Category: Physics

What is the main function of solenoid valve? Solenoid valves are control units which, when electrically energized or de-energized, either shut off or allow fluid flow. The actuator takes the form of an electromagnet. When energized, a magnetic field builds up which pulls a plunger or pivoted armature against the action of a spring. What […]

How can u tell if ur dehydrated? Symptoms of dehydration in adults and children include: feeling thirsty. dark yellow and strong-smelling pee. feeling dizzy or lightheaded. feeling tired. a dry mouth, lips and eyes. peeing little, and fewer than 4 times a day. What does severe dehydration feel like? Medical research shows that dehydration can […]

Is 5ms good for gaming? As a casual gamer, 5ms response time is more than enough for your simple gameplay of shooter games or racing or open world or RPG, it doesn’t matter. You will get a response time faster than your reflexes so you don’t have to worry about response time. Is 60Hz 1ms […]

How close should you stay to your dive flag padi? 15 meters What additional equipment must be on board if your vessel is 16 feet or longer? If the vessel is 16 feet or more in length, one throwable floatation device – Type IV – like a ring is required as well. Life jackets must […]

How are waves similar and different? Different waves, same properties All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference, and all waves have a wavelength, frequency, speed and amplitude. A wave can be described by its length, height (amplitude) and frequency. What do electromagnetic waves have in common? They […]

How do you compare two sample variances? F Test to Compare Two Variances If the variances are equal, the ratio of the variances will equal 1. For example, if you had two data sets with a sample 1 (variance of 10) and a sample 2 (variance of 10), the ratio would be 10/10 = 1. […]

How do you explain diffusion? What is diffusion? Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Diffusion happens in liquids and gases because their particles move randomly from place to place. Diffusion is an important process for living things; it is how substances move […]

What is the oxidation number for lead? +4 What is the oxidation number of V in VO2+? What is the oxidation number of V? The vanadium is now said to be in an oxidation state of +2. Removal of another electron gives the V3+ ion: The vanadium now has an oxidation state of +3. What […]

What are the three types of collisions? Collisions are of three types: perfectly elastic collision. inelastic collision. perfectly inelastic collision. Which formula is used to find an object’s acceleration? Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure […]

Does the temp affect the bounce of a ball? One factor that can influence the bounce of a ball is the temperature of the ball. A warmer ball will bounce higher than a cold one. The reason for this is twofold. In a hollow ball, the change in temperature causes a change in air pressure […]