An arrow is fired at a target on a high wall. Which statement correctly describes the change in the energy of the arrow as it moves toward the target?The potential energy and kinetic energy remain the same.
The potential energy decreases as kinetic energy increases.
The kinetic energy decreases as potential energy increases.
The kinetic energy remains at zero, but potential energy increases.
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Answer : Option C) The kinetic energy decreases as potential energy increases.
Explanation : As the target is fired high on the wall, the change in the energy that is observed as the arrow moves towards the target is kinetic energy starts to decrease as the arrow reaches nearer towards the target and the potential energy is observed to increase. So, in short the energy transformation is from kinetic energy from a moving arrow to potential energy when the arrow hits the target.
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Answer: 22) < 24) 0.003 30,000 25) 1 cc = 1 ml
Explanation:
When give a number in scientific notation, the exponent tells you how many places to move the decimal point.
- Negative moves to the left.
- Positive moves to the right.
25) 1 cubic centimeter (cc) = 1 milliter (ml)
The conversion factor is 1 to 1. You just need to change cc to ml
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B. 1s2 2s2 2p6 3s2 3p3
C. 1s2 2s2 2p6 3s1 3p3
D. 1s2 2s2 2p6 3s2 2d3
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Answer:
1s2 2s2 2p6 3s2 3p2
Explanation:
you're welcome
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Answer:
1. Sand Casting: Sand casting is a popular method used to create pewter objects. Here's how it's achieved:
- First, a pattern or model of the desired object is created using materials like wood, plastic, or metal.
- The pattern is then pressed into a special type of sand called green sand, leaving an impression.
- Next, the pattern is removed, leaving a cavity in the sand.
- Molten pewter is poured into the cavity and left to cool and solidify.
- Once cooled, the sand is carefully removed, revealing the pewter object.
2. Spin Casting: Spin casting, also known as centrifugal casting, is another way to mold pewter. Here's how it works:
- A rubber mold of the object is created, usually using a master pattern made of wax or another material.
- The rubber mold is placed in a casting machine that rotates at high speed.
- Molten pewter is poured into the mold while it spins.
- The centrifugal force evenly distributes the pewter, filling the mold's cavities.
- As the pewter cools, it solidifies and takes the shape of the mold.
- Once cooled, the mold is opened, and the pewter object is removed.
3. Die Casting: Die casting is a method used for producing high-quality pewter objects. Here's how it's done:
- A metal mold, called a die, is created to match the desired shape of the object.
- Molten pewter is injected into the die under high pressure.
- The pressure ensures that the pewter fills the mold completely and captures all the intricate details.
- After a short cooling period, the die is opened, and the pewter object is ejected.
Explanation:
These are just a few ways to form or mold pewter. Each method has its advantages and is suitable for different types of objects. It's important to choose the appropriate method based on the complexity of the design and the desired quality of the final product.