Archive day

November 21, 2025

2,811 public questions were asked on this day.

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Damar writes a book on how to save money. He wants to determine the price at which he should sell the book in order to maximize his revenue. He comes up with the equation y=−0.1x2+26x , where x represents the selling pri...
Asked by Void<3 1 answer
Carbon reacts with oxygen to produce carbon dioxide (CO2 (g), Delta.Hf = –393.5 kJ/mol) according to the equation below. Upper C (s) plus 2 upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g). What is the...
Asked by qp 1 answer
Which substance has Delta.Hf defined as 0 kJ/mol? H2O (s) Ne (l) F2 (g) CO2 (g)
Asked by qp 1 answer
A chronometer. Write two to three sentences explaining how the image reinforces the text.
Asked by maribel 1 answer
Calculate and compare the surface area of sphere A , which has a radius of 6 in., and sphere B , which has a radius of 24 in. The formula for the surface area of a sphere is 4πr2 .(1 point) Responses Sphere A has a surfa...
Asked by t 1 answer
Which statement best explains how nations work together politically in the UN?(1 point) Responses All the member nations participate in the UN General Assembly. All the member nations participate in the UN General Assemb...
Asked by N/A 1 answer
Use the image to answer the question. A circle is traced along the circumference of a sphere at the center like a latitude. A dot is plotted at the center. The diameter measures 12 centimeters. Calculate the volume of th...
Asked by Void<3 1 answer
The combustion of glucose, C6 H12 O6 (s), produces carbon dioxide, CO2 (g), and water, H2 O(g), according to the equation below. Upper C subscript 6 upper H subscript 12 upper O subscript 6 (s) plus 6 upper O subscript 2...
Asked by qp 1 answer
Use the image to answer the question. An inverted triangular pyramid with a square base has a dotted line segment labeled 10 cm extending from the bottom vertex to the base. One side of the pyramid’s base is labeled 8 cm...
Asked by Void<3 1 answer
When ammonium chloride is dissolved in water, the beaker gets cold. Which type of reaction does this describe? exothermic endothermic both exothermic and endothermic neither exothermic nor endothermic
Asked by qp 1 answer
Analyzing the international role of WTO, one can conclude that the WTO(1 point) Responses makes sure trade agreements within the United States are fair. makes sure trade agreements within the United States are fair. prov...
Asked by N/A 1 answer
In the sentence, "The scientist's hypothesis was plausible, but it needed more evidence," what does "plausible" mean?(1 point) Responses Believable Believable Unclear Unclear Unlikely Unlikely Impossible
Asked by jayc 1 answer
Which statement defines specific heat capacity for a given sample? the temperature of a given sample the temperature that a given sample can withstand the quantity of heat that is required to raise the sample’s temperatu...
Asked by qp 1 answer
Mei Li measures a cube and a square-based pyramid and finds that the pyramid has the same height and base area as the cube. She also calculates that the volume of the cube is 9 cubic meters. What is the volume of the pyr...
Asked by Void<3 1 answer
In the sentence, "The teacher's explanation was so lucid that everyone understood the concept," what does "lucid" mean?(1 point) Responses Clear Clear Boring Boring Lengthy Lengthy Complicated
Asked by jayc 1 answer
make a list of questions to ask a professional teaching pro from high school students
Asked by ryan 1 answer
A book is falling from the top shelf of a bookcase. Which statement correctly describes the change in the energy of the book? The potential energy and kinetic energy remain the same. The potential energy decreases as kin...
Asked by qp 1 answer
Use the image to answer the question. An inverted cone of height 6 inches and radius 2 inches is shown. Anders finds the volume of the cone in the image. What is the volume of this cone in cubic inches? Use 3.14 to repre...
Asked by Void<3 1 answer
What does the word "elated" most likely mean in the sentence: "She was elated when she heard the good news"?(1 point) Responses Confused Confused Sad Sad Angry Angry Overjoyed
Asked by jayc 1 answer
Which statement describes mechanical energy? the energy that is stored in chemical bonds the energy that is associated with temperature the sum of the kinetic energy and the potential energy of an object the type of ener...
Asked by qp 1 answer
A cone and a cylinder have the same base radius and the same height. If the volume of the cone is 10π cubic units, what is the volume of the cylinder?(1 point) Responses 3.33π cubic units 3.33 pi cubic units 30π cubic un...
Asked by Void<3 1 answer
Propane (C3 H8 (g), Delta.Hf = –103.8 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Delta.Hf = –393.5 kJ/mol ) and water (H2 O, Delta.Hf = –241.82 kJ/mol) according to the equation below. Upper C subscript...
Asked by qp 1 answer
Which word best fits the sentence: "The __ of the experiment was a breakthrough in science"?(1 point) Responses Delay Delay Result Result Start Start Failure
Asked by jayc 1 answer
What is the meaning of "alleviate" in the context of describing a solution to a problem?(1 point) Responses Relieve Relieve Worsen Worsen Complicate Complicate Ignore
Asked by jayc 1 answer
The distance of the wick to the edge of a cylindrical candle is 2 1/4 inches, and the volume of wax used in the candle is approximately 159 in.3 . Assuming the wick is located in the center of the candle, find the height...
Asked by Void<3 1 answer