Archive day

March 11, 2026

1,610 public questions were asked on this day.

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How is an electromagnet different from a permanent magnet, such as a horseshoe magnet? A. An electromagnet is a magnet made using an electric current. B. The north and south poles of an electromagnet can be reversed. C....
Asked by london 1 answer
If point (4, 5) is on the graph of a function, which equation must be true? f(5)=4 f(5,4)=9 f(4)=5 f(5,4)=1
Asked by Gabriel 1 answer
Industrial magnets, such as the one below, can be used to attract large amounts of scrap metal and then release it elsewhere. Which of the following causes the magnetic force between the magnet and the scrap metal? A. in...
Asked by london 1 answer
A student wants to investigate whether temperature affects how quickly vinegar reacts with baking soda. Which setup would produce the most reliable results? Responses A Use different amounts of vinegar at three temperatu...
Asked by ronald 1 answer
An iron nail by itself is not a magnet. Which of these can make the nail act like a magnet? A. leave the nail on top of the refrigerator B. bend the nail into the shape of a horseshoe C. wrap the nail with a coil of wire...
Asked by london 1 answer
Use the image to answer the question. A coordinate plane ranges from negative 9 to 9 in unit increments on the x-axis and from 11 to negative 11 in unit increments on the y-axis. A line with arrows at both the ends joins...
Asked by xen 1 answer
The telegraph was one of the first machines that could send a message almost instantly to someone hundreds of miles away. The telegraph used a current to turn an electromagnet on and off. When the electromagnet was on it...
Asked by london 1 answer
A wooden block is weighed by using a balance, as shown in the picture. The wooden block is cut into three pieces. The pieces are weighed again (including the sawdust lost from cutting) by using the same weighing balance....
Asked by ronald 1 answer
What changed as a result of civil rights legislation? (1 point) is the answer a majority of african americans brought, a majority of african americans passed, a majority of african americans attended, a majority of afric...
Asked by Grace 1 answer
Consider the function represented by the table. For which x is f(x)=–3? –7 –4 4 5
Asked by Gabriel 1 answer
The diagram below shows an electromagnet. Which of the following will strengthen the magnetic field produced by the electromagnet? A. removing the metal core B. decreasing the current in the wire C. changing the metal co...
Asked by london 1 answer
The quality assurance team: (1 point) tends not to interact much with other teams. is often criticized for not caring about rules and norms. works closely with many other departments. tends to interact with everyone exce...
Asked by bob 1 answer
When would an electromagnet stop working? A. An electromagnet would stop working after 24 hours. B. An electromagnet would stop working when it cools below 45°F. C. An electromagnet would stop working when it gets sunlig...
Asked by london 1 answer
Josh decided to mix some vinegar with baking soda. He knew that a reaction occurred because he made careful observations. He noted that the mixture started to foam up and bubble and was white in color. How did Josh know...
Asked by ronald 1 answer
Many buildings and homes are equipped with magnetic locks. An electromagnet holds a metal door shut with the force of its attraction. Some of these doors have a button placed nearby. Shortly after the button is pushed, t...
Asked by london 1 answer
At higher temperatures, Responses A reaction rates increase because reactants move faster, collide more often, and produce more collisions with the required energy of activation.reaction rates increase because reactants...
Asked by ronald 1 answer
Auto-generated documentation would be most likely to contain which of the following? (1 point) directions for the user the code’s operations and functions comments copied from the code a plan for how to implement the sof...
Asked by bob 1 answer
I. A chemical change breaks bonds, forms new substances and is irreversible. II. Reordering the intermolecular forces is indicative of a chemical change. III. During a physical change the substance remains the same, no b...
Asked by ronald 1 answer
The best user documentation is: (1 point) technical and detailed. fixed and automatic. clear and short. auto-generated.
Asked by bob 1 answer
Scenario 1 — The Unread Messages 1. Problem: You didn’t tell me you were busy, so I was left waiting and stressed about the deadline. 2. I-Statement: I felt stressed and anxious when my messages were left on read because...
Asked by jj 1 answer
Food deteriorates more slowly in a refrigerator because Responses A products are removed.products are removed. B more reactants are added.more reactants are added. C the energy of activation is higher.the energy of activ...
Asked by ronald 1 answer
An electromagnet is created by A. running electric current through a coiled, conductive wire. B. rubbing two pieces of metal together quickly. C. brushing a piece of steel with a soft cloth. D. putting a piece of soft ir...
Asked by london 1 answer
The diagram below shows an electromagnet. Which of the following will strengthen the magnetic field produced by the electromagnet? A. decreasing the current in the wire B. wrapping more coils of wire around the core C. r...
Asked by london 1 answer
why were molly,dasiy and gracie taken from their familes from follow the rabbit-proof fenceby Doris pilkington
Asked by a mr 1 answer
Two kinds of magnets are shown below. Jackson wants to hang a small piece of paper on the metal door of his refrigerator. Which type of magnet would be best for Jackson to use, and why? A. Magnet 1 would work best becaus...
Asked by london 1 answer