Question

EI. A Watched Pot... When heating water on a stove, a full pan of water takes longer to reach the boiling point than if the pan is half full. Why? Explain using the appropriate formula. E2. A Pressing Matter! We viewed a video of Rodrigo smacking the top of a bottle full of water with his palm. Then, the BOTTOM of the bottle broke and the water rushed out. WHY? did this happen? a. (10) Name and State the important physics principle (Law) discovered in the mid-1600s which fully explains why the BOTTOM of the bottle is most likely to break. b. (10) Identify at least three (3) other applications of this important "Law". E3. Hot or Cold or ?? People around the world use only three (3) temperature, all of which are based on the behavior of water. A) Identify (name) these three major temperature measurement scales. B) Which ONE scale is the ONE accepted worldwide by scientists? C) Explain TWO (2) major advantages of this scientific temperature scale. D) At what temperature in EACH temperature scale does water freeze/melt? E) At what temperature in EACH temperature scale does water boil/condense? E4) It is an observed fact that when water falls a short distance onto your hand, (e.g., from a water faucet) it has MUCH less impact on your hand than a similar stream of water falling a significantly greater distance, which can even be painful (e.g., waterfall or rain from a high roof) Explain why water falling a great distance strikes harder. Be sure to use correct terminology and consider any/all of the appropriate physics vocabulary terms and formulas, such as velocity, acceleration, force, energy, power, etc. E5. What Is It? What Is It? WHAT IS IT ?????? In a fully-equipped lab room next door is a small, lightweight, sturdy ball of some substance (EITHER Aluminum, Silver, Granite Rock, Iron, or Copper) sealed in opaque plastic wrap. You do not know the substance's mass, weight, color, "feel", smell, taste, etc. etc. etc., and you may not enter that room. However, using a Video Link, you can direct a lab partner in the lab room to make whatever measurements you need to discover the identity of this unknown substance. Your partner CANNOT open the container to touch the substance, even with gloves. So.. 1) Based on what we covered in class, propose THREE (3) different PHYSICS experiments the lab partner can perform to determine the substance's identity 2) Then, state WHY those lab results DO prove exactly what the substance is E6. State & Explain using a diagram what are a wave's Amplitude, Frequency & Wavelength. explain if or whether each of these terms relates to the wave's Velocity or not AND, IF SO, how does it relate to the wave's velocity.

Answer 1

E1. The heat requires to rise the temperature is giving by:

Q=mc_eΔT

Where m is the mass, c_e is the specific heat and ΔT is the change in temperature

As you can see, the amount of heat depends on the mass, so if there is more mass it will takes more time to reach the boiling point.