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2 years ago

Someone please answer this, ill give you brainliest and your earning 50 points.

Physics

2 answers:

Troyanec [42]2 years ago

5 0

Answer:

water

Explanation:

There are two types of resources

Renewable
Non renewable

The resources which cant be created back again are called nonrenewable.

The resources which can be created back are called renewable

Tema [17]2 years ago

3 0

All of the following are non-renewable resources except

O natural gas

O oil

O minerals

O water ✓ 

Water is a renewable source because evaporation and condensation takes place everytime on our planet

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If two waves are traveling at the same speed, which statement will be true about their wavelengths? 1.The wave with higher frequ

Margarita [4]

I beleive that the wave with higher frequency will have shorter wavelength

4 0

4 years ago

10. A sound wave has a frequency of 400 Hz and a wavelength of 20 meters. What is the speed?

Dmitry [639]

Speed of wave is 8000 m/s.

Answer:

Explanation:

Speed is the measure of ratio of distance to time taken to cover that distance. In other words, speed is the measure of how fast the object can be move in a given time interval. So in this case, the wave is considered as object . And wave consists of wavelength in place of distance and frequency as reciprocal of time interval.

So speed of wave is calculated as the product of wavelength and frequency.

As the wavelength is given as 20 m and the frequency is given as 400 Hz, then the speed will be

Speed = wavelength × Frequency = 20 × 400

Speed of wave = 8000 m/s.

So speed of wave is 8000 m/s.

6 0

4 years ago

A spacecraft with a proper length of 250 m passes by an observer on the earth. according to this observer, it takes 0.770 µs for

Sophie [7]

If 1 second = 10000 μs
what about how many seconds = 0.77 μs
the calculations would be done lke this
0.77 x 1/1000000 = 7.7 x 10 ^ -7
Speed = distance / time
distance = length of the spacecraft
therefore speed = 250/7.7 x 10^ -7
ans = 324675324.7 m/s

4 0

3 years ago

Describe a situation in your everyday life where you could use the scientific method. List all the steps of the scientific metho

emmainna [20.7K]

Yes, scientific method can be applied on many everyday activities to get a reasonable solution. Infact normally we are applying this method without having it in our knowledge that we are applying it.

For example: In morning we are going to office and we start the car, but it is not started.You turn the engine again and again but it simply donot works.

Observation (the state of defining a problem):

The car is not started

Hypothesis (A possible solution based on the information we already know):

The car is not started because it might be out of gas or there can be some other technical fault.

Experiment (testing of hypothesis by applying different methods of solving problem):

You get the fuel and put it inside the car but it still donot works and car didnot start. Experiment didnot get solution.

Analyze the results of data and test another hypothesis

You call a technician and he check with the car engine tries and finds out that the engine was out of order and needs repairing.

Draw conclusion:

The engine do not works when it is out of order and it is a cause of a car not being started.

Now the theory and law making part can not be applied on this case but it is a part of scientific method.

Hope it helps!