Question 19 of 25
2 Points
A portable electric heater has a resistance of 8 ohms. It plugs into a wall
outlet that is 120 V. How much current, in amps, does it draw?
Answer here
SUBM

Answer:

Electric Current (I) = 15 Amperes

Explanation:

Given:

Resistance (R) = 8 ohms

Outpet (V) = 120 V

Find:

Current (I) = ?

Computation:

⇒ Electric Current (I) = Outpet (V) / Resistance (R)

⇒ Electric Current (I) = 120 / 8

⇒ Electric Current (I) = 15 Amperes

15 Amperes, current will draw.

Mass is 4 grams and density is 2g/mL. what is the density

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Which of these are examples of negative tropism? (Select all that apply.)

a plant’s stem growing upward out of the ground due to gravitropism

a plant’s leaves growing away from the sunlight due to phototropism

a plant’s roots growing toward a water source due to hydrotropism

a plant’s roots growing away from a water source due to hydrotropism

a plant’s leaves growing toward the direction of the sun due to phototropism

a plant’s roots growing down into the soil due to gravitropism

Earth's orbit is an ellipse. Which of the following ellipses most closely resembles the exact shape of Earth's orbit, as seen from directly above the North Pole?

Three blocks are shown: Three blocks are shown. Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and width 2 centimeters. Block B has mass 1 kilograms, length 6 centimeters, height 2 centimeters, and width 4 centimeters. Block C has mass 2 kilograms, length 2 centimeters, height 6 centimeters, and width 4 centimeters. Which statement is correct? Block A has the greatest density. Block B has the greatest density. The density of Block A is equal to the density of Block B. The density of Block B is equal to the density of Block C.

Name and state the rule to find out the direction of magnetic field inside and around the loop.

A car of mass 940kg is traveling at 16m/s calculate the kinetic energy
A-120320 j
B-150965 j
C-179035 j
D-190045 j

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

This is a science question

First Amendment
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.

Based on the First Amendment, which statement can you assume to be true about the Founding Fathers?

They believed government would not make laws that affected rights.
They were concerned about the government having too much power.
They were concerned the people would not rally behind a single religion.
They believed the proper role of citizens was to leave politics to their leaders.

the speed of a wave is 50 cm/s and its wavelenght is 10 cm What is its frequency

what area of technology is the camera classified in? And WHY
a. Information and Communication
b. Bio-related and Agricultural
c. Medical d. Environmental
e. Production, which includes manufacturing and construction
f. Transportation
g. Energy and Power
h. Nanotechnology

What is it called when wavelengths spread out by passing through an object such as a prism?
A)dispersion
B)refraction
C)reflection
D)absorption

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.

the Conservation of Momentum states that the momentum of the system before the collision the momentum of the system after the collision

1. Examine at least three different batteries at home or at a store, each with a different voltage. Download the battery chart and fill it in showing the type of battery (alkaline, NiCd, etc), the voltage, the size, and the use for which each battery is designed. Why do you think they are different in size and voltage? Link: https://s3.amazonaws.com/content.accelerate-ed.com/Secondary/docs/PhysicalScience/battery_chart.pdf

2. Examine two items that use more than one battery, such as a flashlight, a 2-way radio, or a battery-operated toy. Look at the arrangement of the batteries in the item. Are they connected in series? For each item, state the number and type of batteries, the voltage of each battery, and the total voltage produced.

Where in your body is CO2 produced? A lungs b blood C cells

3. Which of the following describes why fossil fuels are nonrenewable?
A) It is very difficult to drill for fossil fuels, and we don't have the resources to do it.
B) Fossil fuels formed from plants and animals that lived many, many years ago.
C) Fossil fuels are destroyed when we use them.​

A worker is fixing a ladder at the community pool. Both the temperature of the water and the air is 68 degrees Fahrenheit. He bangs on the aluminum ladder with his steel hammer. There is a swimmer swimming in the pool while the man works.


Compare how the sound waves move in the air, aluminum, steel, and water. Use data from the table to support your answer.
Form an explanation for the differences in speed.

I will give anyone who answers this fast and correctly a brainliest on this and go to your account and give 5 stars/thanks on all of your answers .


To investigate absorption, Hector cuts two rectangles from five different-colored sheets of construction paper. He then staples three sides of each pair of rectangles to make a pocket and inserts a thermometer into each.


He takes the thermometers in the construction paper pockets outside, where it is clear and sunny. The initial temperature of each thermometer is 22°C. The image shows the thermometers after being outside for 15 minutes.


A thermometer in black paper reads 38 degrees Celsius, a thermometer in white paper reads 24 degrees Celsius, a thermometer in green paper reads 29 degrees Celsius, a thermometer in red paper reads 31 degrees Celsius, and a thermometer in blue paper reads 33 degrees Celsius.

Complete Hector's table by recording the final temperature and calculating the temperature change for each thermometer.

Help me please U-U..................................................

Can lightning be transported? If it can, can you explain how?

10 points are to be given.

HELP WILL MARK U BRAINLESIST
A 20 pound barbell is brought from earth to the International Space Station(ISS). How does this trip affect the
gravitational force between the two ends of the barbell? Assume the distance between the barbell end masses does not
change.
-I
11-
A The gravitational force between the ends increases.
B The gravitational force between the ends decreases.
The gravitational force between the ends remains the same.
D The gravitational force between them decreases by one half.
The gravitational force between them doubles.

PLEASE HELP ME WITH THE GRAPH, I have no idea what to do and I am REALLY BEHIND. I set it to 100 points

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

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.

We learned that refraction is the bending of light and reflection is the bouncing of light. What do you think diffraction might be?



PLEASE HURRY, I'M TIMED! WILL GIVE BRAINLIEST! PLEASE ANSWER WITH WHAT YOU THINK DIFFRACTION IS!

Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?

What two gases in the atmosphere do animals and plants need to breathe and grow?

If the line on a distance versus time graph and the line on a speed versus time graph are both straight line going through the origin, can the two graphs be displaying the motion of the same object?

Explain one way you could set up a tug-of-war that was imbalanced. What did you observe? What did you notice about the forces?