3 years ago

What is the difference between a group and a period

1 answer:

5 0

Periods going left to right. The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in eachgroup have the same number of electrons in the outer orbital.

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If a particle's position is given by x=4-12t+3t^2, where t is in seconds and x is in meters, what is its velocity at t=1 second?

andreyandreev [35.5K]

Answer:

v = -6m/s

Explanation:

$x=4-12t+3t^2$

$\frac{dx}{dt}=-12+6t$

For t = 1:

$\frac{dx}{dt}=-6$

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3 years ago

A soap box derby car at the top of a ramp has more _________ energy and at the finish line at the bottom of the ramp it has more

astra-53 [7]

Kinetic, potential because, at the top of the ramp it’s going faster. Potential at the bottom of the ramp is potential because, it’s not doing any motion.

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3 years ago

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pentagon [3]

The formula for kinetic energy is

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How you measure the object's mass and speed is up to you.
You'd need different methods for different objects, and in some
cases, you'd need quite a bit of ingenuity.

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3 years ago

5. What happens to the arrangement of water molecules as ice melts?

m_a_m_a [10]

Answer: I am pretty sure the answer is B

Explanation: If not sorry bro.

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3 years ago

does it require more energy to brew 12 cups with the coffee-maker or reheat 12 cups of coffee in a microwave?

Leni [432]

It would take more energy to reheat 12 cups because only 1 or 2 cups can fit in a microwave rather an than brewing 12 cups in a coffee pot.

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3 years ago

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