Category: Physics

Do things float better in hot or cold water? Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water. […]

What happens to water when it freezes its mass INcreases? The fact that water expands upon freezing causes icebergs to float. The fact that water reaches a maximum density at about 4°C causes bodies of water to freeze on the top first. The expansion upon freezing comes from the fact that water crystallizes into an […]

What does a 100 watt bulb mean? If you have a Light bulb that has a rating of 100 watt, it means that the light bulb consumes 100 J per second. kWh is the unit of energy. You can compare this to the volume of water that comes out of the pipe. A 100 watt […]

Which has lowest lattice energy? cesium iodide How do you know which compound has higher lattice energy? To decide whether BaS or CaO has the greater lattice energy, we need to consider the relative sizes of the ions because both compounds contain a +2 metal ion and a −2 chalcogenide ion. Because Ba 2 + […]

What are fireproof materials? Refractories are hard, heat-resistant materials such as cement, bricks, precast shapes, ceramics and fire clay. Some of the minerals used to make refractories include alumina, chromite, fire clays, magnesite and silicon carbide. Does Flex tape withstand heat? A: Flex Tape can be applied in a wide range of temperatures, from 20° […]

What is the purpose of continue statement? The continue statement in C programming works somewhat like the break statement. Instead of forcing termination, it forces the next iteration of the loop to take place, skipping any code in between. For the for loop, continue statement causes the conditional test and increment portions of the loop […]

What grade is a 67%? Percent Letter Grade 70 – 72 C- 67 – 69 D+ 63 – 66 D 60 – 62 D- Is 70 an A or B? Letter Grade Percentage Range Mid-Range A 80% to 89% 85% B+ 75% to 79% 77.5% B 70% to 74% 72.5% C+ 65% to 69% 67.5% […]

Can humans generate random numbers? Generated numbers were tested for uniformity, independence and information density. The results suggest that humans can generate random numbers that are uniformly distributed, independent of one another and unpredictable. Why cant you use random numbers from 1 to 100? A number between 1 and 100 will never be 1 or […]

How do you read a pump performance chart? When you’re reading a curve, the pump’s flow rate will be on the top and bottom and its height to push is on the sides. You’ll want to select the flow rate your application requires by drawing a line up on the chart then select your desired […]

How can you produce magnetic field without using a magnet? A Magnetic field can be produced without using a magnet through an electromagnet or a current-carrying conductor. Explanation: A magnetic field is described as a condition in the space around a magnet in which there is a detectable magnetic force and two magnetic fields are […]