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3 years ago

Which of the following statements is true based on the law of conservation

Physics

1 answer:

ipn [44]3 years ago

7 0

Answer:

Explanation:

The mass of something before it's been processed is the same as it's mass after the process.

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What is the difference between a physical change and a chemical change

Contact [7]

A physical change in something doesn't change what the it is. For example, if you break glass, it will still be glass. In a chemical change where there is a chemical reaction, a new thing is formed and energy is either given off or absorbed. For example, when you burn a log. The carbon in the log is reacting to the oxygen to create ashe and smoke

6 0

3 years ago

Read 2 more answers

Gamma rays can cause cancer, but they can also be used to treat cancer. How

kiruha [24]

Answer:

I think it depends on the purpose of using Gamma rays. It can be both good and bad

5 0

2 years ago

A car travels a distance of 200 miles in 3.5 hours in a given trip. What is the average speed of the car in that

erica [24]

Taking into account the definition of speed, the average speed of the car in the trip is 57.14 $\frac{miles}{hour}$ .

<h3>Definition of speed</h3>

Speed is a physical magnitude that relates the displacement of an object and the time it takes to make this change in position.

So, the speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:

$speed=\frac{displacement}{time}$

Speed has units of $\frac{distance}{time}$ , such as $\frac{meters}{second}$ or $\frac{miles}{hour}$ .

<h3>Average speed of the car</h3>

In this case, you know that:

displacement= 200 miles
time= 3.5 hours

Replacing in the definition of speed:

$speed=\frac{200 miles}{3.5 hours}$

<u><em>speed= 57.14 </em></u> $\frac{miles}{hour}$

Finally, the average speed of the car in the trip is 57.14 $\frac{miles}{hour}$ .

Learn more about velocity:

brainly.com/question/4418301

brainly.com/question/24990123

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brainly.com/question/25288184

#SPJ1

7 0

2 years ago

The discovery of which force most directly impacted our society by allowing the development of nuclear weapons

zhuklara [117]

nuclear ... truman, hiroshima, nagasaki

4 0

3 years ago

Suppose 500 joules of work is done to push an object in 15 seconds. Find the power for this situation

ohaa [14]

Answer:

You have to calculate

Explanation:

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.

5 0

4 years ago