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2 years ago

Wich has more energy rolling down a hill - a bowling ball or soccer ball? Explain your answer

Chemistry

2 answers:

snow_tiger [21]2 years ago

7 0

Answer:

Explanation:

As a ball rolls downhill, its potential energy from its height is converted into kinetic energy of its motion. Potential energy is given by mass x gravity x height. So for the same height, a ball with higher mass will have more energy. A bowling ball is heavier than a soccer ball and will have more energy.

goldfiish [28.3K]2 years ago

6 0

Answer:

Bowling ball

Explanation:

They are traveling at the same speed, but the bowling ball has more mass. The bowling ball has more kinetic energy because more force is needed to stop the rolling bowling ball. Two balls with different masses moving at the same speed have different amounts of kinetic energy.

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Radio stations identify themselves by their position on the radio dial such as 90.1 and 93.3. This number is based on the number

netineya [11]

D. frequency is the answer

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3 years ago

Why is staining useful when studying cells through a microscope

Gemiola [76]

It's useful because it highlights structures in biological tissue.

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2 years ago

Given the reaction _K(s) +_ Cl2(g) → _KCl(s) what is the amount of K, in grams, needed to completely react with 2 moles of Cl2(g

damaskus [11]

Answer:

156.4g K

Explanation:

I'm not sure if it is correct but I think it should be this

What do we know so far?: 2K + 1Cl2 -> 2KCl, 2 mol of Cl2

What are we looking for?: #g of K

What is the ratio of K to Cl2?: 2:1

Set up equation: 2molCl2 x $\frac{2mol K}{1 mol Cl2}$

Cancel unwanted units: 2 x $\frac{2mol K}{1}$

Answer we got: 2 x 2mol K = 4mol K

Converting moles to grams: 4 x 39.1 (molar mass of K) = 156.4g K

3 0

2 years ago

A reaction mixture at 175 k initially contains 522 torr of no and 421 torr of o2. at equilibrium, the total pressure in the reac

zzz [600]

The chemical equation would be:

2NO(g) + O2(g) --> 2NO2 (g)

At equilibrium state, the partial pressure of the gases would be as follows : 

NO = 522 - 2x 

O2 = 421 - x 

NO2 = 2x 
- - - - - - - - - - - - -
943 - x = 748 

x = 195

Calculating for Kp,

Kp = (NO2)^2/ ((NO)^2 * (O2)) 

Kp = (2 * 195)^2/ ((522 - 2 * 195)^2 * (421 - 195)) 

Kp = 0.0386

4 0

3 years ago

Is air a conductor or an insulator

Nina [5.8K]

Air is a insulator in normal conditions,but when heated up to high temperatures it becomes a conductor.

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2 years ago