Questions by Paulo Costa

Questions by Paulo Costa

A fire truck emits sound waves at a constant frequency. An observer stands several blocks away. Which statement best describes the sound waves perceived by the observer as the fire truck approaches? The

asked Aug 9, 2023

1 answer

4 votes

134k views

Why is our legal system and imperfect

asked Feb 12, 2023

1 answer

4 votes

228k views

If f′(x) = 3x^2 + 2x and f(2) = 3, then f(1) =

asked Oct 6, 2022

1 answer

19 votes

194k views

Define and explain the impact of strip mining.

asked Jul 21, 2022

1 answer

23 votes

55.6k views

Cesca measured the temperatures of the three different liquids in her Science Class . The temperature of the soft drink was 7 C. The temperature of the vinegar was 8 C higher than the temperature of the

asked Jun 2, 2022

2 answers

4 votes

158k views

What effect did Martin Luther King jr. have on his world?

asked May 18, 2022

1 answer

4 votes

181k views

1 ≥ x - 9 Find out what x means.

asked Apr 10, 2022

1 answer

1 vote

218k views

Which of the following is an example of a physical, rather than a chemical, change?

asked Jan 24, 2022

1 answer

0 votes

156k views

Question. Why do people enjoy eating candy and snacks? Why do you enjoy eating candy/snacks?

asked Dec 8, 2021

1 answer

3 votes

15.5k views

What are two activities that might increase your rate of respiration?

asked Sep 25, 2021

1 answer

4 votes

69.7k views

I need a physical description of Mr. Hyde!!! please help!!

asked Sep 24, 2021

1 answer

3 votes

41.5k views

PLEASE HELP I DONT KNOW THE ANSWER IM DUMB AND EXPLAIN HOW YOU KNOW IT What effect does Papa hope to create when he tells the children that Mama was “made to teach like the sun was made to shine”? A.)hope

asked Sep 21, 2021

1 answer

1 vote

224k views

The formation of ammonia is represented by the equation N2(g) + 3H2(g) ⇌ 2NH3(g). Determine the enthalpy of formation of ammonia given the following mean bond enthalpies (kJmol-1): N≡N 942; H-H 436; N-H

asked Aug 14, 2021

1 answer

1 vote

19.9k views

How do I get around Apple screen time and app restrictions

asked Jun 21, 2021

2 answers

1 vote

56.4k views

The creation of a central government and the foundation of the __________ dynasty ended the Warring States period. A. Xia B. Shang C. Zhou D. Qin

asked Mar 22, 2021

2 answers

4 votes

13.7k views

Which interval contains a local minimum for the grafted function? [-4, -2.5] [-2, -1] [1, 2] [2.5, 4]

asked May 10, 2020

1 answer

4 votes

28.9k views

The menu at a Pizza For Two has 23 choices. Fifteen of them contain Ham and 14 have Chicken and three are vegetarian. a. If Monica dislikes Ham, how many choices does she have to order from? b. If Andrew

asked Apr 11, 2020

1 answer

4 votes

190k views

Help were are these places?

asked Mar 20, 2020

2 answers

0 votes

177k views

Which is a heterogeneous mixture? A. A mug of hot cocoa B. A glass of tap water C. A gallon of milk D. A jar of mixed nuts

asked Jan 6, 2020

1 answer

2 votes

139k views

One important catalyst for expanding sub-saharan trade was the a. Defeat of muslim armies. b. Creation of unified states. c. Introduction of the camel as a draft animal. d. Carving of settlements out of

asked Oct 15, 2019

1 answer

1 vote

157k views

Page:

Search QAmmunity.org