2. An ammeter registers 2.5 A of current in a wire that is connected to a 9.0 V

battery. What is the wire's resistance?

Answer:

3.6 Ω

Explanation:

Resistance: This is defined as the opposition to the flow of current in an electric circuit. The S.I unit of Resistance is Ohm's (Ω).

From the question above,

Applying Ohm's law

V = IR...................... Equation 1

Where V = Voltage, I = current registered by the ammeter, R = Resistance.

make R the subject of the equation

R = V/I............... Equation 2

Given: V = 9 V, I = 2.5 A

Substitute into equation 2

R = 9/2.5

R = 3.6 Ω

Hence the resistance of the wire =  3.6 Ω

The beam in a cathode ray tube is moved by an electric force. What did

scientists infer about atoms from this experimental result?

O

A. Atoms are small particles that cannot be destroved or divided.

O

B. Atoms have a dense, positively charged center.

O

C. Electrons have more energy the farther they are from the nucleus.

O

D. Atoms are made up of smaller particles.

BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.

Black to move and capture a hanging piece . Select the best move

A) Nxg3
B) Bxg3
C) Qxg5

Answer the 2 following questions dividing them like the below:

answer 1
------------
answer 2

-----------------
QUESTIONS
-----------------

1 . After watching the video of how the Titanic sank, please explain with two to three sentences why the bow (front) of the ship went into the water before the rest of the ship.

2 . The video of the Titanic sinking shows that the ship broke into two parts. Why do you think that this happened? What forces were working on the stern (back) of the ship while it was up in the air? Please answer in two to three complete sentences with good grammar.

Please Help Me!!!!!!

List an example of matter in each of the three states.

Which of the following forces has not changed Earth's surface?

folding
erosion
weathering
gravity

Give an example of a negative slope.

How is electronegativity related to the position of elements on the periodic table and covalent bonding?

The Chemical equation represents________reaction

Do nutrients cause seagrass to grow more in this area? If so, are both nitrogen and phosphorus equally important? Explain your answer.

Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity

I desperately need help on my last problem! Please help!

A moving car of mass 500 kg collides with a stationary truck of mass 1500 kg, and the two vehicles lock together on impact. The combined velocity of the car and truck after the collision is 20 m/s. The velocity of the car before the collision is _______ m/s.

What is the velocity of the car before the collision?

please help need asapppp!

Please someone help with all of these 3

What would happen to the digestion process if enzymes were not present

Please help! I’ll give Brainliest

List at least 3 ways for you to represent your data graphically

And observer reviews for identical objects that are traveling at speed close to the speed of light in their legs be used to rank the objects according to their speeds A. No the Lankes of the four objects should be the same regardless of the speed B. Yes the shortest object is traveling the fastest C. Yes the longest object is traveling the fastest D. No the length of each object demands on the frame of reference of the observer

Which of the following is the best reason for conserving oil resources?
A. Oil takes millions of years to form.
B. The conditions necessary to form oil will never happen again.
C. Oil is too expensive to extract.
D. Oil can be renewed in a human's lifetime.

100 POINTS AND BRAINLIEST NO CAP IF YOU WRITE THIS CORRECTLY AND DECENTLY IF YOU HAVE A QUESTION PUT IT IN THE COMMENTS NOT AN ANSWER PLS
You have learned that power is the speed, or rate of doing work. In this report you will learn more about James Watt or horsepower.

Here is your goal for this assignment:

Complete an activity on power


Complete one of these activities:

1. Research the life of James Watt. Report in about fifty words some of the important events in Watt's life leading up to the watt being named in his honor.

2. Conduct a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer. Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:

Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)

Amount of Horsepower or Watts: (Record power in horsepower or in watts.)

In the periodic table, the most reactive metals are found a. in Group 1, the first column on the left. b. in Period 1, the first row across the top. c. in Groups 13 through 16 in the center. d. in Periods 6 and 7 at the bottom.

What are the properties of the layers of the Earth atmosphere

What was the largest group in the colonies in the year leading up to the American revoulation

An auto company technician is trying to relate a car’s damage in a crash test to the kinetic energy of the car on impact. In addition to the mass of the car, what ratio will the technician need in order to determine to complete his study? The ratio of time to speed, weight to mass, distance to time, or acceleration to speed. Explain why.

1 sentence telling me the topic of the story. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the topic is what you stated in the first sentence.
1 sentence telling me the conclusion. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the conclusion is what you stated in the sentence above this one
The average woodpecker smashes its beak against a hard surface more than 10,000 times a day. Any human who jolted their head like this would likely end up with a concussion. This traumatic brain injury is caused by a blow to the skull. So why doesn’t the constant hammering turn woodpeckers’ brains into mush? For years, it was assumed that woodpeckers had some kind of cushioning in their heads to protect their brains during pecking. Many scientists suggested that spongy bone in the birds’ skulls absorbed and lessened the shock of each impact (see Myth Buster: Hard Headed). This idea was repeated in scientific articles, textbooks, and informative plaques at zoos. Even though the concept “is often presented like a clear-cut fact, there haven’t been any real tests to prove it,” says Sam Van Wassenbergh. He’s a biologist who studies biomechanics, or how living things move, at the University of Antwerp in Belgium.SHOCK ABSORBER: Van Wassenbergh uses a spring-loaded hammer to show why a shock-absorbing skull would make a woodpecker less efficient at pecking. When you think about it, says Van Wassenbergh, the shock-absorbing skull idea doesn’t make much sense. Woodpecker drills into the wood in search of insects to eat. When the bird’s head accelerates forward, the movement generates kinetic energy. This energy of motion is transferred to the tree when the bird slams its beak against the trunk. If a woodpecker’s skull had to cushion, it would absorb some of this energy and decrease the force of the peck. Why would a bird that survives by pecking evolve to do it less effectively? Van Wassenbergh and his team decided to see what was really going on. First, the researchers recorded videos of woodpeckers’ heads in motion. To capture this rapid movement, the scientists needed special high-speed cameras. Each peck lasts only a fraction of a second! Van Wassenbergh’s team recorded videos of six woodpeckers from three species and analyzed the footage. The researchers used a computer to track three points on each bird’s head: one on the skull and two on the beak. The scientists hypothesized that if the birds’ skulls had shock absorbers, the footage would show a “squishing” of the space between the skull and beak—like when a spring compresses. But that didn’t happen. Instead, the birds’ heads moved as one stiff unit, like a hammer. Next, the team wanted to demonstrate why this adaptation would be helpful to the birds. Using computer models, the scientists simulated woodpecker skulls with and without shock absorbers. Then the researchers compared the force of the pecks. “The pecking performance was greatly reduced in the skull with a shock absorber,” says Maja Mielke, a biologist who worked on the study. With shock absorbers, says Mielke, “the poor birds would need to pound even harder to reach the same results.” For a woodpecker, having a shock-absorbing skull would simply be a waste of energy. Science World originally published this diagram in our May 10, 2021, issue. It was based on scientists’ beliefs about woodpecker anatomy at the time. Here it is again—updated based on new research. MYTH: The skull is made of spongy bone that cushions and protects the brain from impactBUSTED! The skull is hard enough to protect the bird from injury, but it doesn’t cushion The eyes have a special membrane that protects them from flying splinters and wood dust.MYTH: Neck muscles are strong and stiff enough to absorb the shock of each peck BUSTED! Stiff neck muscles do not absorb shock—in fact, they help increase the force of each peck.MYTH: The tongue wraps completely around the outside of the skull, providing an additional level of cushioning, and can extend to probe for food inside holes made by the birdBUSTED! The tongue does not provide any observable cushioning. The beak is connected to the skull with thick bone that prevents jolts and vibrations. NEW RESEARCH SHOWS: The woodpecker’s brain is small, which helps prevent concussions that might occur in a larger animal. If woodpeckers’ skulls don’t absorb shock, then why doesn’t constant pecking damage the birds’ brains? To answer this question, the researchers calculated how harmful the blows from pecking actually are. It turns out the hits aren’t that dangerous because the birds’ brains are so small. “Small masses can tolerate stronger impact forces without being damaged,” says Mielke.

PT7 what does ";" mean??

A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J

Students have a small steel ball and a large steel ball, and they have a short ramp and a tall ramp.


The students want to find out if a ball's size affects how far it can roll. They also want to find out if the height of the ramp affects how far the ball can roll.
They do the following experiment: (second image)


The students finish conducting their tests and conclude that using a taller ramp and a larger ball will make the ball roll further. Is their conclusion based on a reliable experiment?

A.Yes, because they used the same color balls.


B.No. They did not do an additional test to compare the results using the short ramp.


C.No. The small ball should have been pushed with more force.


D.Yes, because they changed the height of the ramp.

plz help it really easy