Archive day

November 21, 2025

2,811 public questions were asked on this day.

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Use the image to answer the question. A cylinder has a height of 15 centimeters and a radius of 8 centimeters. If the cylinder were dilated using a scale factor of 4, what would be the new surface area? The formula for t...
Asked by t 1 answer
Read the excerpt from "Benin Plaque: The Oba with Europeans.” The Portuguese galleons, cutting out all the middlemen and able to carry much bigger cargoes, offered a totally new kind of trading opportunity. They and thei...
Asked by maribel 1 answer
Sinking and Swaddled by Beth Gilstrap She swore she felt the earth drop—like a hitch in an elevator—several miles from her mother’s house. She thought of all those bedlinens agitated, curled, heaped on top of her mother,...
Asked by jaun 1 answer
Read the excerpt from "Ship's Chronometer from HMS Beagle.” As a maritime nation, the British were concerned with one problem in particular: they could make clocks that kept very good time as long as they stayed perfectl...
Asked by maribel 1 answer
A triangular prism has a surface area of 486 in.2 . If it were dilated using a scale factor of 1/3 , what would the new surface area be?(1 point) Responses 54 in.2 54 in. squared 1,458 in.2 1,458 in. squared 18 in.2 18 i...
Asked by t 1 answer
Read the excerpt from "Ship's Chronometer from HMS Beagle.” Our object is one of those lower-cost chronometers, made in 1800 by Thomas Earnshaw. It is made of brass and is around the size of a large pocket watch, with a...
Asked by maribel 1 answer
Compare primary and secondary pollutants. Which is more harmful?
Asked by bob 1 answer
1. Soft skills are best defined as:(1 point) Physical abilities needed for work Skills that are always job-specific Technical abilities learned through training Personal attributes that help individuals interact effectiv...
Asked by no name 1 answer
h + 52 > 295 - 2h
Asked by Zoe 1 answer
Soot results from burning organic compounds. Soot is an example of _______. a. a primary pollutant b. a secondary pollutant c. a tertiary pollutant d. none of the above
Asked by bob 1 answer
Carbon monoxide is a common atmospheric pollutant. Please select the best answer from the choices provided T
Asked by bob 1 answer
Which two layers of the atmosphere are responsible for the majority of solar radiation absorption? a. stratosphere and troposphere b. stratosphere and thermosphere c. troposphere and thermosphere d. troposphere and mesos...
Asked by bob 1 answer
Which of the following groups of people would be the least affected by air pollution? a. people with asthma b. infants c. teenagers d. the elderly
Asked by bob 1 answer
A sample of octane (C8H18) that has a mass of 0.750 g is burned in a bomb calorimeter. As a result, the temperature of the calorimeter increases from 21.0°C to 41.0°C. The specific heat of the calorimeter is 1.50 J/(g •...
Asked by qp 1 answer
Explain why components that are naturally found in air can be considered air pollutants.
Asked by bob 1 answer
What is the formula for the volume of a cylinder with radius r and height h? In 3–5 sentences, describe an informal argument for this volume formula.(4 points)
Asked by Void<3 1 answer
A copper rod that has a mass of 200.0 g has an initial temperature of 20.0°C and is heated to 40.0°C. If 1,540 J of heat are needed to heat the rod, what is the specific heat of copper? Use q equals m C subscript p Delta...
Asked by qp 1 answer
In a story, if a character "contemplates" their next move, what are they doing?(1 point) Responses Rushing it Rushing it Considering it Considering it Forgetting it Forgetting it Ignoring it Ignoring it
Asked by jayc 1 answer
What is a possible long-term effect of continued exposure to air pollution?
Asked by bob 1 answer
Rectangular prism A has a surface area of 25 square units and rectangular prism B has a surface area of 100 square units. Which statement accurately compares the dimensions of prism A to those of prism B ?(1 point) Respo...
Asked by t 1 answer
Which statement best explains the change that occurs when gas particles move more slowly? The temperature increases because the average kinetic energy decreases. The temperature increases because the average kinetic ener...
Asked by qp 1 answer
Which defines the average kinetic energy of a system’s particles? density pressure temperature volume
Asked by qp 1 answer
What are some possible sources of air pollution?
Asked by bob 1 answer
Sample Response: The text uses descriptive details to help the reader understand how a chronometer works, and the image reinforces those details. The image allows readers to see all of the individual parts of the chronom...
Asked by maribel 1 answer
An ice cube is dropped into a glass of milk at 20°C. Which statement explains the transfer of kinetic energy (KE)? Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice. Because mil...
Asked by qp 1 answer