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3 years ago

Describe where metals and nonmetals are found on the periodic table

Physics

1 answer:

Studentka2010 [4]3 years ago

4 0

Non metals are all the way on the right side

Metalloids are the stair case

Metals are on the left side

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A car moving at 95 km/h passes a 1.00-km-long train traveling in the same direction on a track that isparallel to the road. If t

victus00 [196]

Answer:

Time to pass the train=0.05 h

How far the car traveled in this time=4.75 Km

Explanation:

We have that the train and the car are moving in the same direction, the difference between the speed of the vehicles is:

$\Delta V=V_{car}-V_{train}=95km/h-75km/h=20km/h$

We will use this difference in the speed of the car an train to calculate how much time take the car to pass the train. For this we have that the train is 1km long and the car is moving with a speed of 20km/h (we use this value because is the speed that the car have in advantage of the train) then for a movement with a constant speed we have:

$V=\dfrac{x}{t}$

Where x is the distance, t is the time and v is the speed. using the data that we have:

$V=\dfrac{x}{t}=\dfrac{1km}{20km/h}=0.05h$

This is the time that the car take to pass the train. Now to calculate how far the car have traveled in this time we have to considered the speed of 95Km/h of the car, then:

$V=\dfrac{x}{t}\\x=v\cdot t\\x=95km/h\cdot 0.05h\\x=4.75km$

7 0

3 years ago

1. Compare and Contrast microwaves with visible light using wavelength, frequency and energy

coldgirl [10]

Visible light has more energy than microwaves but it has a smaller wavelength than microwave

4 0

3 years ago

For 10 minutes, the wolf blew on the brick house with 5,000 N of force. How much work did he do?

frozen [14]

C.0 because it didn't move<span />

8 0

3 years ago

Wanda has a cube of sugar. She crushes it into a powder. What has changed about the sugar?

stira [4]

Mass always stays the same therefore it can’t be c and d. Volume stays the same because she is not removing anything. Therefore it is a

5 0

3 years ago

Read 2 more answers

A bumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. The spring constant is 5000

34kurt

Part A:
For this part we’re assuming all the kinetic energy of the moving bumper car is converted into elastic potential energy in the spring since the car is brought to rest. Therefore you can find the total kinetic energy to get your answer:

KE = ½ mv^2
KE = ½ (200)(8)^2
KE = 6400 J

Part B:
Now you can use Hooke’s law to find the force:

F = kx
F = (5000)(0.2)
F = 1000 N

4 0

3 years ago