Category: Physics

What causes capillarity and surface tension? Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the walls is stronger than […]

How do you remember the D block elements? D-block elements it includes are Lutetium (Lu), Hafnium (Hf), Tantalum (Ta), Tungsten (W), Rhenium (Re), Osmium (Os), Iridium (Ir), Platinum (Pt), Gold (Au) and Mercury (Hg). Mnemonic for Period 6: L(u)a HafTa Warna Reh Us(Os) Irritating Popat ke saath Aur Hoj(g)a pagal. How can I remember the […]

How many senators were there in 1861? 37th United States Congress United States Capitol (1861) March 4, 1861 – March 4, 1863 Members 50 senators 183 representatives 7 non-voting delegates Senate Majority Republican How many senators were there in 1877? 44th United States Congress United States Capitol (1877) March 4, 1875 – March 4, 1877 […]

Can you cut and splice O2 sensor wires? Many O2 sensors are universal and meant to be spliced. Cut and paste. No worries. As long as you have a good connection it will be fine. Can you drive your car with a bad O2 sensor? In summary, yes, you can drive with a faulty O2 […]

Can a body have zero velocity and still be accelerating? Yes, an object can have zero velocity and still be accelerating simultaneously. Then the object will start to move in the backward direction. Is acceleration zero at the turn around point? 4. Acceleration is always smaller then velocity. A point where an object reverses its […]

What is natural frequency and resonance? The natural frequency is the frequency at which an object will remain vibrating after hitting it. What happens when you excite that object at the same frequency as its natural frequency? Well, that is resonance. What is the difference between frequency and fundamental frequency? The fundamental frequency is just […]

Can Insulators be charged by contact? 3 Answers. When you charge an insulator by friction, the close contact of two electron clouds (each from a different medium) allows for electrons to be transferred between them. The number of atoms coming in contact to each other by friction is proportional to the area of the two […]

What is the hardest metal to drill through? Cobalt (HSCO) is considered an upgrade from HSS because it includes 5-8% Cobalt blended into the base material. This is a great option for drilling into harder steel as well as stainless steel grades. Carbide (Carb) is the hardest and most brittle of the drill bit materials. […]

What are the characteristics of inelastic collision? An inelastic collision is a collision in which there is a loss of kinetic energy. While momentum of the system is conserved in an inelastic collision, kinetic energy is not. This is because some kinetic energy had been transferred to something else. What do u mean by perfectly […]

Can I charge a 19V laptop with a 12V charger? NO you cannot charge your 12V AGM battery directly with a 19V Laptop power supply. So your fully charged state is about 13.8 – 14.5V. Putting two batteries in parallel does not change the voltage required to charge them it simply increases the current capability […]