Category: Physics

What is the most densest element? element osmium What is the lightest natural metal? magnesium What are the 3 lightest metals? The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium, known collectively as the “lightest metals”. What is the lightest thing in the world? Graphene Aerogel What […]

What is the final velocity of the two vehicle mass? A 1500 kg car traveling at 15 m/s to the south collides with a 4500 kg truck that is intially at rest at a spotlight. The car and the truck stick together and move together after the collison. Therefore, the final velocity of the two-vehicle […]

What is a scientific principle examples? If you drop an apple, it will fall. If you throw an apple in the air, it will follow a specific path while falling down. Newton’s laws don’t tell us why the apple falls or what causes it to fall, just that it does fall. Similarly, the law of […]

What is the most common lever in the body? Third-Class What is a third class lever example? With third class levers the effort is between the load and the fulcrum, for example in barbecue tongs. Other examples of third class levers are a broom, a fishing rod and a woomera. Is bottle opener a class […]

Which property of water makes it more useful as a coolant in sweating? Water’s thermal properties, its high specific heat, means that it can cool us Evaporating sweat (water changing phase from liquid to gas) takes heat away from the body Water is also the main component of blood plasma. It transfers heat from the […]

What is true for electromagnetic waves? Definition: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields. They are also perpendicular to the direction of the EM wave. How […]

Can noise canceling hurt your ears? Overall, noise cancellation in headphones doesn’t affect your hearing negatively. You may hear a slight hissing sound when you the ANC is turned on, but that’s about it. However, for some people this can be irritating and even result in dizziness. Keep in mind, that this hissing sound does […]

Does amplitude equal loudness? The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. The volume we receive thus depends on both the amplitude of a sound wave and whether its frequency lies in a region where the ear […]

When a solution is saturated the concentration of the solute is? A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. At 20°C, the maximum amount of NaCl that will dissolve in 100. g of water is 36.0 g. If any more NaCl is added past […]

Is topple an example of slide? falls. topples. slides – rotational and translational. What are the 2 types of landslides? Landslides in bedrock Rock falls. Single and small rock falls from cliffs build up to form aprons of scree or talus, sometimes developing over long time periods. Rock slope failures. This group of landslides varies […]