Answer:
The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there
Question 1
A STUDENT TIES A STRING AROUND A WEIGHT AND SWINGS THE WEIGHT IN A CIRCLE AROUND HER BODY. IF
THE STUDENT REPRESENTS THE SUN AND THE WEIGHT REPRESENTS EARTH, WHAT DOES THE STRING
REPRESENT?
A. GRAVITY
B. RADIATION
C. ELECTRICITY
D. MAGNETISM
Answer:
A) Gravity.
Explanation:
Earth is stuck in orbit around the sun, because of the Sun's gravitational pull. In this scenario, the string represents gravity, keeping the Earth attracted towards the sun.
Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day and good luck with your assignment :)
The student ties a string around a weight and swings the weight in a circle around her body. If the student represents the sun and the weight represents earth, the string will represent GRAVITY then.
What is gravity?In mechanics, gravity—also known as gravitation—is the constant force of attraction that pulls all things together. It has little impact on determining the intrinsic characteristics of common stuff because it is by far the weakest known force in nature.
In contrast, it governs the formations and evolution of stars, galaxies, and the entire cosmos by its extensive and ubiquitous action, which affects the trajectories of objects in the solar system and beyond the universe. All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.
As the student represents the sun and the weight represents earth, the string will represent GRAVITY then. Hence, option (A) is correct.
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Identify the career that matches the description.
Runs the front desk at a hotel or motel: Hotel/Motel Clerk
Oversees other employees at a hotel or motel: Hotel/Motel Supervisor or Manager
Cleans the interior of buildings: Housekeeper/Cleaning Worker
Helps guests at places of lodging with personal services: Concierge
Handles luggage for travelers: Porter/Bellhop
The answers to them are in each line behind the :'s.
Answer: 1.Hotel/Motel Clerk 2.Hotel/Motel Supervisor or Manager 3.Housekeeper/Cleaning Worker 4.Concierge 5.Porter/Bellhop
What is profession?
A successfully professionalized field of employment is referred to as a profession.
It can be characterized as a disciplined team of people, professionals, who uphold ethical standards, present themselves as, and are recognized by the public as possessing, special knowledge and skills in a widely acknowledged body of learning derived from research, education, and training at a high level, and who are prepared to apply this knowledge and exercise these skills in the interest of others.
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Calculate the parallel component of the weight of the object on the inclined plane below.
1. 0.87 N
2. 4.33 N
3. 24.5 N
4. 42.4 N
Answer:
4. Wx = 42.47[N]
Explanation:
In order to solve this problem, we must first make a free body diagram, of the forces acting on the body in the inclined plane.
As we can see in the attached image, the component of the weight parallel to the surface of the inclined plane can be obtained by the sine of the angle.
[tex]W_{x}=5*9.81*sin(60)\\W_{x}=42.47[N][/tex]
Does anyone have a science fair Idea in the topic force and motion? Please I need help!
Answer:
i did this project where i took two marbles pool noodles and tape then i made a ramp and i saw which marble would go down faster the big marble or the little marble hope this helps!!
a student compared two samples of matter he recorded the results in this chart which property do the two samples have in common
Answer:
私は知らない
Explanation:
When you move your head from side to side or walk around, the apparent movement of stationary objects relative to one another is ________________________________.
Answer:
Motion parallax cue.
Explanation:
Motion parallax cue can be defined as a monocular depth cue that arises from objects moving at constant velocity (speed) across the retina or frame appearing to move faster when they are closer to the observer than they appear if they were at a farther distance.
Simply stated, motion parallax refers to a change in position due to the movement of the observer.
Hence, when you move your head from side to side or walk around, the apparent movement of stationary objects relative to one another is known as motion parallax cue.
Therefore, monocular depth cues such as motion parallax gives a valid explanation as to why stationary objects such as trees appear to move when you move your head from side to side.
For example, an observer (passenger) in a moving car looking outside the window would see stationary objects moving due to motion parallax cue.
You are riding a skateboard and hit a hole in the street, causing you to fly off the board and crash. Which law represents this action? *
Answer:
It's Laws of Motion
Explanation:
Please I need help with this question (see image).
Show workings where necessary.
Answer:
The specific heat capacity of something is simply the amount of heat energy required to raise 1g of that substance or object by 1°C.
The specific heat capacity of something is simply the amount of heat energy required to raise 1g of that substance or object by 1°C.It is given by the formula Q = mcΔT, where Q is the energy transferred (J), m is the mass of the substance (kg), c is the specific heat capacity, and ΔT is the temperature change (°C).
a substance that vigorously reacts with most metals to produce hydrogen, readily conducts electricity, turns litmus red, and has a pH less than 7; typically corrosive or sour-tasting.
A: suspension
B: base
C: acid
D: colloid
Answer:
C. Acid
Explanation:
If you have chemistry classes and performed experiments regarding acids and bases, you would physically tell it's acid if the lithmus paper turned red and base if it turned blue. Also, in the pH level chart, there are only two characteristics--acidic and basic. Since it has less than 7 pH, it is definitely acid. Plus, remember the taste of some vitamin C tablets? It has a sour taste to it, isn't it? This is because of ascorbic acid.
The given properties are indicating the substance is acid. Therefore, option (C) is correct.
What are acids and bases?An acid can be described as any substance that is capable of losing a proton to another substance. A base can be described as a molecule or ion that can accept a hydrogen ion from an acid.
Acidic substances can be identified by their sour taste. Acid is usually a molecule that donates an H⁺ ion and can be energetically favorable after a loss of an H⁺ ion. Acids are also capable to turn blue litmus into the red.
Bases can be characterized by a slippery texture and a bitter taste. A base that can be dissolved in water as an alkali. When bases and acids react, they form salts and water. Bases can turn red litmus into blue.
The acid reacts vigorously with most metals to form hydrogen. Acidic substances have pH of less than 7.
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When fireworks explode, sound and light are produced. These are examples of
macroscopic outputs
microscopic outputs
microscopic inputs
macroscopic inputs
Answer: Macroscoptic Output
Explanation:
Answers to the rest:
1. B) macroscopic outputs.
2.A) a microscopic change creating a macroscopic output
3.B) Because the energy levels of the electrons in different metals are usually not the same, different metals usually emit different colors of visible light.
4.A) Heat is applied to a solid, causing its molecules to move quickly.
5.A) strontium, sodium, copper, potassium
When fireworks explode, sound and light are produced, these are examples of macroscopic outputs.
The macroscopic scale is a scale where objects are large enough to be visible using the eyes or any other sense.Fireworks produce sufficient sound and light to be observed without the need for any specific device.Conversely, microscopic scale refers to the scale in which we cannot be observed by using the eye and we need specific tools to observe these phenomena (e.g., a microscope).In conclusion, when fireworks explode, sound and light are produced, these are examples of macroscopic outputs.
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In the reaction _S+302 +2SO3, what coefficient should be placed in front of the S to balance the reaction?
A. 1
B. 2
C. 3
D.5
Answer:
B. 2
Explanation:
The reaction expression is given as:
_S + 3O₂ → 2SO₃
Now let us balanced the expression;
On the product side we have 2 moles of S
On the reactant side we should have 2moles of S
So, we put the coefficient 2 to balance the expression;
We have 6 moles oxygen on both sides
Helppp plzzzz.......A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.
A baseball player hits a baseball with a bat. The mass of the ball is 0.25 kg. The ball accelerates at 200 m/s2. What is the force, to the nearest N, of the bat on the baseball?
Answer:
50N
Explanation:
Force (N) = mass (kg) × acceleration (m/s²)
0.25kg times 200m/s² = 50N
Select the community facility which usually has a driving range on the property to practice your swing.
A Bowling Alley
B Fitness Center
C Golf Course
D YMCA
Answer:
golf course
Explanation:
i will give you all the answers you desire, my love
a hurricanes energy comes from?
Answer:
a or b
Explanation:
Answer:
The answer is C, condensation or large amounts of water vapor and the second question is correct too.
Explanation:
Question 4 of 10
If infrared waves can move information through air, what is the advantage of
sending their signals through networks of cables?
A. Cables are easy to maintain.
B. These waves need to travel only short distances.
C. Cables transmit infrared waves over longer distances.
O D. The denser the medium, the faster the wave.
Answer:
C. Cables transmit infrared waves over longer distances.
Explanation:
A.pex
Answer:
The answer is C.Cables transmit infrared waves over longer distances.
Explanation:
I took AP EX quiz.
A car which is traveling at a velocity of 1.6 m/s undergoes an acceleration of 9.2 m/s over a distance of 540 m. How fast is it going
after that acceleration?
Answer:
Vf = 99.7 m/s
Explanation:
In order to find the final velocity of the car, we will use the third equation of motion. The third equation of motion is given as follows:
[tex]2as = V_{f}^{2} - V_{i}^{2}[/tex]
where,
a = acceleration of the car = 9.2 m/s²
s = distance traveled by the car = 540 m
Vf = Final Speed of the car = ?
Vi = Initial Speed of the car 1.6 m/s
[tex]2(9.2\ m/s^{2})(540\ m) = (V_{f})^{2}-(1.6\ m/s)^{2}\\V_{f}^{2} = 9936\ m^{2}/s^{2} + 2.56\ m^{2}/s^{2}\\\\V_{f} = \sqrt{9938.56\ m^{2}/s^{2}}[/tex]
Vf = 99.7 m/s
Which two options describe behaviors of particles that are related to the
chemical properties of the materials?
A. Allowing electrons to move freely between them
B. Easily forming bonds with atoms of other elements
C. Changing their positions relative to one another
O
D. Combining with oxygen atoms to form a new substance
Answer:
B
Explanation:
When The conduct of particles is connected to the chemical properties of the materials. The two options are correct B and D.
What are Chemical Properties?
A property of a substance connecting to its chemical reactivity (as the incendiary effects of nitroglycerin).
Chemical stability and oxidation circumstances, different chemical properties include: Essentially, the chemical property is a differentia that may only be commemorated as an influence of a chemical reaction.
Therefore, The two correct options are B. Efficiently forming bonds with atoms of different elements and D. Converging with oxygen atoms to form a unique substance.
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Which statement describes an example of constructive interference?
A. Two TV signals reach an antenna and cancel each other out.
B. Light forms bars on a surface after passing through two slits.
C. Oil spilled in a water puddle shows different colors of light.
D. A cell-phone signal is lost when you pass through a certain area.
Answer:
b
Explanation:
because Constructive interference occurs when the maxima of two waves add together (the two waves are in phase), so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes. Equivalently, the minima of the waves would be aligned.
Marco is conducting an experiment. He knows the wave that he is working with has a wavelength of 32.4 cm. If he measures the frequency as 3 hertz, which statement about the wave is accurate?
The wave has traveled 32.4 cm in 3 seconds.
The wave has traveled 32.4 cm in 9 seconds.
The wave has traveled 97.2 cm in 3 seconds.
The wave has traveled 97.2 cm in 1 second.
Answer: D. the wave has traveled 97.2 cm in 1 second.
Explanation:
Got it right on edge, hope this helps :)
Answer:
D
Explanation:
It is
What is double jeopardy
Answer:
the prosecution of a person twice for the same offense.
Can somebody mee plzzz?
Answer: I think the answer is d
Explanation:
Light is refracted as it crosses the air-water.
Hope it helps :)
1. What is the final velocity of the 1200-kg car after the collision?
Jeff is driving a remote controlled car around his living room. The car has a mass of 770 g. Jeff drives the car with a velocity of 4.1 m/s. What is the momentum of the car?
Answer:
3.16kgm/s
Explanation:
Given parameters:
Mass = 770g
Velocity = 4.1m/s
Unknown:
Momentum of the car = ?
Solution:
To solve this problem, we use the equation below:
Momentum = mass x velocity
Convert the mass to kg;
770g to kg = 0.77kg
Now;
Momentum = 0.77 x 4.1 = 3.16kgm/s
I need it ASAP please
Answer:
Number 3 is C
Explanation:
It just makes sence
Cellular respiration occurs in every cell of our bodies. Through this process, we obtain the
energy we need for life. During cellular respiration, oxygen helps in breaking down sugar
molecules into carbon dioxide and water molecules. Which reaction correctly represents the
cellular respiration process? (1 point)
Answer:
1)The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy.
2)sugar + oxygen → carbon dioxide + water + energy
3)iron + oxygen → rusted iron + energy
4)an endothermic reaction, because ice absorbs heat to become liquid water
5)The temperature of the reactants is greater than the temperature of the products.
Explanation:
100%
an airplane flies with a constant speed of 640km/h. how far can it travel in 45 minutes?
Answer:
the answer is 483.75 I believe
How much power does a toaster have if it does 1,000 joules of work in 30 seconds?
Answer:
33.33Watts
Explanation:
Given parameters:
Work done = 1000J
Time taken = 30s
Unknown:
Power = ?
Solution:
To solve this problem, we must understand that power is the rate at which work is done.
So;
Power = [tex]\frac{Work done }{time}[/tex]
Now insert the parameters:
Power = [tex]\frac{1000}{30}[/tex] = 33.33Watts
Explain how the processes of igneous rock formation change the geosphere.
The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.
I have been dehydrated 3 times in my life. Is it good or bad that I am going to start to drink 4 water bottles everyday now? FYI I am underweight.
Answer:
yes
Explanation:
because you will be hydrated
Answer:
Its good because you can survive without food but you cant survive without water. Extra water can replace empty, sugary calories many people drink with meals.
Explanation: