Category: Physics

What is the principle of electric iron? An electric iron is based on the principle of heating effect of current that heat is produced in the nichrome wire used in the iron due to the current flowing through it. Which coating is best for iron? Which soleplate is best for ironing? Stainless steel soleplates have […]

Can you restore color to clothes? Salt to restore faded colors. Add half a cup of salt during the wash cycle to restore the vividness of colored clothes. Baking soda to retain crispiness of color. During the wash cycle, add half a cup of baking soda to retain the vibrancy and crispiness of your colored […]

What is the best UV for tanning? Good UV Index for tanning UV Index 0 – 2. Low exposure level. Average time it takes to burn: 60 minutes. UV Index 3 – 5. Moderate exposure level. Average time it takes to burn: 45 minutes. UV Index 6 – 7. High exposure level. UV Index 8 […]

Is a guitar string a standing wave? A guitar string sound consists of standing waves: the fundamental and overtones. The fundamental wavelengh is twice the length of the vibrating part of the string. What type of wave does a guitar make? Longitudinal Waves What is the frequency of low E on a guitar? 82 Hz […]

What happens if thrust is greater than drag? If thrust is greater than drag, the aircraft will speed up, and subsequently, if drag is greater than the thrust, you’ll slow down. Lift is the force that counteracts the weight of an object in order to keep it in the air. What are 4 things that […]

What are the four main blood vessels? The major blood vessels connected to your heart are the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the […]

Are hot crusts more or less dense? It can get quite hot deep in the Earth’s crust. In fact, it can get so hot that the rocks that make up the crust can actually begin to melt. This molten material is called magma. It is less dense than the surrounding rock so it tends to […]

What are the 4 biological rhythms? There are four biological rhythms: circadian rhythms: the 24-hour cycle that includes physiological and behavioral rhythms like sleeping. diurnal rhythms: the circadian rhythm synced with day and night. ultradian rhythms: biological rhythms with a shorter period and higher frequency than circadian rhythms. What happens if your circadian rhythm is […]

What causes so much static electricity in my house? Static increases when the air gets cold and humidity drops. To stay warm in your home, you turn up the heat, further adding to a decrease in humidity and increasing static. Why do I get static shocks more than others? Secondly, you may be storing more […]

How much of the ice cube will be submerged below the surface of this liquid? 90% Why do you float more easily in the ocean than in fresh water? When salt is dissolved in water, as it is in ocean water, that dissolved salt adds to the mass of the water and makes the water […]