Which is the rarest Group 1 element?

Which is the rarest Group 1 element? francium Do all group 1 elements react vigorously with water? All the alkali metals react vigorously with cold water. This shows that the reactivity of the alkali metals increases as you go down Group 1. What is the trend as we go down Group 1? Explaining the trend […]

Why did Dave bite through the traces?

Why did Dave bite through the traces? They are attacked by starving dogs from the neighboring Indian village because the dogs could smell the food they were carrying. He bites through Sol-leks traces, the dogs pull away without the sled, and Dave stands in his proper place. So they hook Dave back into the trace. […]

When we push a wall no work is done?

When we push a wall no work is done? In this case the wall does not displace from its position even though the force is applied and since displacement is zero work done is said to be zero. Is pushing against a wall work? Note that forces without motion do no work. For example, if […]

Why is public transport safer than cars?

Why is public transport safer than cars? Crash Risk Crash risk refers to property damages, injuries and deaths caused by vehicle crashes. Public transit has relative low crash rates per unit of travel, as indicated in Table 3 and Figure 1. Public transit passengers have far lower traffic casualty rates than automobile occupants. Should buses […]

How many deaths have self-driving cars caused?

How many deaths have self-driving cars caused? How many deaths have self-driving cars caused? (Gasgoo) So far, there have been two pedestrian fatalities. One was caused by an Uber vehicle, and the other by a Tesla AV. Additionally, four AV drivers died in self-driving car accidents. Has a self-driving car killed anyone? Uber chose not […]

What is an igneous or sedimentary rock that has been changed by extreme pressure and heat quizlet?

What is an igneous or sedimentary rock that has been changed by extreme pressure and heat quizlet? Metamorphic rocks form when high temperature and pressure alter existing igneous and sedimentary rocks. Metamorphic rocks can also be formed from other metamorphic rocks. Rock changes in Metamorphic Rocks. Rock changes into metamorphic form when it experiences intense […]

Which fruit is good for metabolism?

Which fruit is good for metabolism? Watermelon, cantaloupe, honeydew—these are naturally good for metabolism. Watermelon may even help with weight loss because it contains the amino acid arginine, which was found in a study of obese mice to reduce body fat gains by 64 percent. How do I know what my metabolism is? A metabolic […]

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