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jeka94
3 years ago
5

What part of the electromagnetic spectrum was first developed during ww2

Chemistry
1 answer:
insens350 [35]3 years ago
7 0

Answer:

Radio waves were first developed in WWII

Explanation:

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How much heat energy is needed to raise the temperature of 59.7g of cadmium from 25°C to 100°C? The specific heat of cadmium is
labwork [276]
     Using the Fundamental Equation of Calorimetry, we have:

Q=mc\Delta T \\ Q=59.7.0.231.(100-25) \\ \boxed {Q=1034.3025J}      

If you notice any mistake with my english, please know me, because I am not native.
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3 years ago
Write a balenced chemical equation for the reaction: include abbreviation for the physical states-
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Explanation:

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3 years ago
What is the density of a plastic ball that has a volume of 6cm) and a mass of 12g?<br> 50 cm3
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2 years ago
A doorknob makes it easier for you to open doors because it is what type of simple machine?
vagabundo [1.1K]

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Using a doorknob is like putting a (steering) wheel on an axle. This increases the radius and therefore increases the torque. You put in less work into the system and get more out of it.

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3 years ago
What could you change or add to your models based on what you have learned about molecules and phases so far?
timurjin [86]

Answer:Phase changes require either the addition of heat energy (melting, evaporation, and sublimation) or subtraction of heat energy (condensation and freezing). ... Changing the amount of heat energy usually causes a temperature change.

Explanation:

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2 years ago
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