Category: Physics

Is it hard to hit a homerun off a tee? Yes. Any major league player who can hit home runs can hit a ball over the fence off a tee. If he can do it on his size-appropriate field, a major leaguer could EASILY do it. Easily. Does hitting off a tee help? As unexciting […]

How many km can be driven in a day? You should not drive for more than 9 hours a day, excluding breaks. For every 4.5 hours driving you should take breaks amounting to 45 minutes. For long-distance driving, this means you can drive around 500 miles safely in a day. Are long drives bad for […]

Which is an empirical formula? An Empirical formula is the chemical formula of a compound that gives the proportions (ratios) of the elements present in the compound but not the actual numbers or arrangement of atoms. This would be the lowest whole number ratio of the elements in the compound. What is the empirical formula […]

How do you prove two vectors are perpendicular? Remember that two vectors a and b are perpendicular to each other if their dot product is zero. Here in your case , say a = (i + 2 j + 4 k ) and b = (2i – j ) then it is easy to see […]

How many watts is a 1HP motor? 746 watts How fast is a 212 Predator engine? This engine is a performer right out of the box, and should get your go kart running anywhere from 20 mph all the way up to 35mph in its stock form. How many cc is a 15 hp engine? […]

What is the role of the mantle in plate tectonics? The Earth’s mantle plays an important role in the evolution of the crust and provides the thermal and mechanical driving forces for plate tectonics. Because subducted plates are relatively cool, they decrease the temperature of nearby mantle, leaving relatively warm mantle in the regions between […]

What are the 3 types of thermal energy transfer? Heat can be transferred in three ways: by conduction, by convection, and by radiation. Conduction is the transfer of energy from one molecule to another by direct contact. Convection is the movement of heat by a fluid such as water or air. Radiation is the transfer […]

What are the 4 types of materials? Materials can be classified into four main groups: metals, polymers, ceramics, and composites. What are the 5 types of inventory? 5 Basic types of inventories are raw materials, work-in-progress, finished goods, packing material, and MRO supplies. Inventories are also classified as merchandise and manufacturing inventory. What is EOQ […]

What happens when a material is deformed Why? When a sufficient load is applied to a metal or other structural material, it will cause the material to change shape. This change in shape is called deformation. A temporary shape change that is self-reversing after the force is removed, so that the object returns to its […]

What has the least density? The first chemical element with the lowest density is Hydrogen and the highest density is Osmium. What is the lightest strongest metal? Magnesium Which metal is less dense water? lithium, sodium and potassium are less dense than water so they float on the surface of the water. the metals move […]