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December 2025

42,840 public questions were asked this month.

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Recent questions

Latest from December 2025

What is the energy of a photon with a frequency of 1.7 × 1017 Hz? Planck’s constant is 6.63 × 10–34 J•s. 1.1 × 10–17 J 1.1 × 10–16 J 8.3 × 10–16 J 8.3 × 10–15 J
Asked by kelvin calin 1 answer
Use the passage to answer the question. Gabriella’s favorite day of the week was Sunday because she had nowhere to be and nothing to do. She would usually wake up and head outside to the porch, sometimes with a book in h...
Asked by xen 1 answer
Water melts at 0°C. A student observes a liquid that melts at 10ºC. Which conclusion can the student reasonably draw?(1 point) Responses The bonds between water molecules are stronger than the bonds between molecules in...
Asked by timm 1 answer
Use the table to answer the question. Boiling Points of Various Substances in Degree Celcius Substance Boiling Point (ºC) acetone 56 turpentine 160 propane –43 glycerin 290 In which substance are the electrostatic forces...
Asked by timm 1 answer
Based on the rational root theorem, which of the following are possible roots of P(x) = 12x^10 + 2x^2 – 15? select all that apply -2 -5 1 5/2 2/5
Asked by Chuck Bass 1 answer
Which features play a role in determining hierarchy in text? Choose three answers. Size Rasterization Fonts Colors Font type
Asked by ss 1 answer
What does the index of refraction directly measure? the angle between the incident ray and the normal line the angle between the refracted ray and the normal line the bending of light in a medium the reflection of light...
Asked by kelvin calin 1 answer
Which list includes only bulk properties of matter?(1 point) Responses boiling point, kinetic energy, surface tension boiling point, kinetic energy, surface tension boiling point, surface tension, vapor pressure boiling...
Asked by timm 1 answer
a type of water coil used for heating and cooling is a a. counter flow b.steam c.axial flow d.4 pass flow e.cross flow
Asked by dsadsa 1 answer
Which is an everyday example of a diffraction grating? A picture of the bottom of a CD or DVD showing rainbow lies going out from the center. A picture of an upright mirror. A picture of wave peaks in water. A picture of...
Asked by kelvin calin 1 answer
Use the dialogue to answer the question. Luisa ran through the back door of the coffee shop where she worked every Saturday. She shoved her purse in her locker and tied her apron around her waist. “I hate being late,” sh...
Asked by xen 1 answer
Which measurable property of water allows water droplets to have a rounded shape?(1 point) Responses surface tension surface tension vapor pressure vapor pressure melting point melting point boiling point
Asked by timm 1 answer
What is the difference of 5/14 and 1/34? Your answer should be written as a mixed number.
Asked by Sofia 1 answer
Arnold makes a chart to summarize what happens when light interacts with matter and is reflected. Which idea does Arnold need to correct? In specular reflection, reflected rays move in the same direction. In scattering,...
Asked by kelvin calin 1 answer
What responsibilities does Roman citizens have?
Asked by Hi 1 answer
Which statement explains the relationship between the temperature and vapor pressure of a liquid?(1 point) Responses The higher the temperature, the more molecules will vaporize, resulting in a greater vapor pressure. Th...
Asked by timm 1 answer
What line of code should be written after the function definition to add two single-digit values and print the sum? def get_single_digit(): while True: try: num = int(input("Enter a single-digit positive number: ")) if n...
Asked by john 1 answer
a type of water coil used for heating and cooling is a what coil
Asked by dsadsa 1 answer
Which words refer to the temperature at which a substance will vaporize?(1 point) Responses melting point melting point boiling point boiling point surface tension surface tension vapor pressure
Asked by timm 1 answer
A light with a second-order bright band forms a diffraction angle of 30.0°. The diffraction grating has 250.0 lines per mm. What is the wavelength of the light? 800 nm 1,000 nm 1,386 nm 1,732 nm
Asked by kelvin calin 1 answer
Write a paragraph contrasting the values of the working animals and the values of Napoleon and the pig
Asked by p 1 answer
Hope is the thing with feathers by Emily Dickinson “Hope” is the thing with feathers - That perches in the soul - And sings the tune without the words - And never stops - at all - And sweetest - in the Gale - is heard -...
Asked by giggle bong 1 answer
Use the passage to answer the question. Rochelle slammed her laptop shut, pumped her fists up to the sky, and shouted, “Yes! I did it! I finally figured it out!” Her feet did a little dance under the desk, and a genuine...
Asked by xen 1 answer
The Middle East is home to _____ percent of the world’s desalination plants. 25 70 55 90
Asked by ; D 1 answer
Which statement describes how a substance melts?(1 point) Responses Molecules in the substance gain kinetic energy and then become more tightly bound to each other. Molecules in the substance gain kinetic energy and then...
Asked by timm 1 answer