Recent activity by Jacek Rojek

Recent activity by Jacek Rojek

1. 50.0 g of an unknown metal was heated to 95.0 °C and added to 45.0 g of water at 25.0 °C in a calorimeter. Once the system reached equilibrium the final temperature was 28.5 °C. Calculate the specific

asked Dec 11, 2023

1 answer 148k views

What is the length of the shortest pipe closed on one end and open at the other end that will have a fundamental frequency of 0.060 kHz on a day when the speed of sound is 340 m/s?

answered Oct 28, 2023

1 answer 105k views

Why were the Arabs so successful In expanding their empire?

answered Aug 16, 2023

1 answer 44.1k views

Question 6 William's Boy Scout group is building wooden cars. William builds his car by gluing two rectangular prisms together. 12 in. 18 in. B in. 4 in. 20 in. What is the total volume of William's car?

answered Aug 1, 2023

1 answer 2.8k views

What is 2x1/5 PLEASE HELP ASAP

answered Jun 22, 2023

2 answers 69.6k views

The _____________ is the member of a triad who benefits from conflict between the other two members of the group.

asked Jun 20, 2023

1 answer 175k views

2 Quick algebra 1 question for 50 points! Only answer if you know the answer, quick shout-out to Mr.Royal, tysm for the help!

answered Apr 8, 2023

1 answer 12.7k views

How does the section Closing on Thanksgiving Makes Business Sense help convey the theme of the text “ many stores look at the pros and cons of being open on thanksgiving”

answered Mar 1, 2023

2 answers 174k views

In the diagram, point D divides line segment AB in the ratio of 5:3. If line segment AC Is vertical and line segment CD is horizontal, what are the coordinates of point C?

asked Jan 1, 2023

1 answer 32.0k views

Show that x² + x +1 is always positive for all real values of x

asked Dec 5, 2022

1 answer 186k views

PLEASE HELP 25 POINTS

answered Nov 20, 2022

1 answer 212k views

2 pounds of grapes cost $8 How do they cost per pound? How many pounds of grapes do you get per dollar?

answered Oct 17, 2022

1 answer 34.5k views

A volleyball player’s serving percentage is 75%. Six of her serves are randomly selected. Using the table, what is the probability that at most 4 of them were successes? A) 0.297 B) 0.466 C) 0.534 D) 0.

asked Oct 16, 2022

2 answers 95.8k views

Use the Rule of 72 to find what interest rate is needed to double $10,000 investment in the given number of years.

asked Sep 7, 2022

1 answer 95.2k views

I had a cup of tea into yes/no question

asked Jul 27, 2022

2 answers 130k views

Alexandra worked 5 hours, 4.5 hours, and 2.5 hours. The mean number of hours worked was 4. What is the mean absolute deviation?

answered Jul 7, 2022

1 answer 149k views

What information might a genetic counselor provide to Emily

answered Jun 25, 2022

1 answer 50.8k views

Help I need help with this

asked Jun 17, 2022

1 answer 112k views

Jenifer y yo ___ (have) que estudiar.

asked May 7, 2022

2 answers 165k views

Caculate the value of this expression 60-(-80) pls help me solve both

answered Apr 21, 2022

2 answers 192k views

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