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4 years ago

Can someone help me understand this assignment and give me some hints and tips on what I should do, please?

Physics

1 answer:

katen-ka-za [31]4 years ago

6 0

First you have to note down you horoscope for 2-3 days.

Daily observe what is written in your horoscope is true or not. You can observe your entire day movements.

Now you have to conclude whether your horoscope was true or not and you have to write an essay explaining what had happened to you in past observation and conclude whether you believe in astronomy or not depending on your observations

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Label the samples based on their pH levels

Dominik [7]

lemon juice, gastric juice and tomato juice are acidic, bleach and baking soda are alkaline and salt solution is neutral

7 0

4 years ago

What is the internal energy of 7.00 mol of n2 gas at 40c?

emmasim [6.3K]

To find the internal energy of gas we can use

$U = \frac{f}{2}nRT$

here given that

Number of moles (n) = 7 moles

Temperature T = 40 + 273 = 313 K

degree of freedom(f) = 5 (for diatomic gas)

now by above formula

$U = \frac{5}{2}* 7 * 8.31 * 313$

$U = 45518.03 J$

So it is approximately 45500 J (option C)

4 0

4 years ago

A scenario where reaction time is important is when driving on the highway. During the delay between seeing an obstacle and reac

Levart [38]

Answer:

66.83 meters

Explanation:

After a quick online search, it seems that scientists calculate the average reaction time of individuals as 2.3 seconds between seeing an obstacle and putting their foot on the brakes. Now that we have this reaction time we need to turn the miles/hour into meters/second.

1 mile = 1609.34 meters (multiply these meters by 65)

65 miles = 104,607 meters

1 hour = 3600 seconds

Therefore the car was going 104,607 meters every 3600 seconds. Let's divide these to find the meters per second.

$\frac{104,607}{3600} = \frac{29.0575 meters}{1 second}$

Now we simply multiply these meters by 2.3 seconds to find out the distance covered before the driver puts his/her foot on the brakes...

29.0575m * 2.3s = 66.83 meters

7 0

3 years ago

You are walking toward the back of a train that is moving forward with a constant velocity. The train's velocity relative to the

yawa3891 [41]

Answer:

28.5 m/s

Explanation:

There are 2 different velocities: the train velocity and yours velocity. They're in opposite directions, so one is positive and other is negative. Take the forward direction as the positive:

V = +30 -1.5

V = 28.5 m/s

7 0

3 years ago

The soon to be released skylake chipset architecture will use what socket?

Flauer [41]

The answer is LGA1151. The soon to be released skylake chipset architecture will use LGA1151 socket Also known as Socket H4, it is an Intel microprocessor compatible socket which comes in two distinct versions: the first revision which supports both Intel's Skylake[2] and Kaby Lake CPUs, and the second revision which supports Coffee Lake CPUs exclusively.

7 0

3 years ago