Answer:
The answer is biodiversity
Explanation:
Which of the following is true for the image formed in a plane mirror? (Select all that applies) The image...
A. is behind the mirror
B. has the same size as the object
C. is formed as the same distance from the mirror as the object
D. is flipped relative to the mirror
E. cannot be seen
Answer:
right options are:
A
B
C
D
1. If a Creature Cat's Ferrari With an initial speed of 15 m/s, accelerates at a rate of 60/m/s/s for 5 s, what
will the final speed be?
Answer:
v = 315m/s
Explanation:
a = v - u /t
a = acceleration 60m/s2
v = final speed
u = initial speed 15m/s
t = time 5 secs
Therefore
60 = v - 15 /5
Cross multiply
v - 15 = 60 x 5
v - 15 = 300
Add 15 to both sides
v - 15 + 15 = 300 + 15
v = 315m/s
Which type of motion most accurately describes the behavior of a friction -less pendulum?
A) Circular motion
B) Periodic Motion
C) One - dimensional Motion
D) Two - dimensional Motion
Answer:
B) Periodic Motion
Explanation:
When a pendulum is friction-less, i.e there are no damping forces acting on it, its motion will be periodic, i.e it will bob up and down going from potential energy to kinetic energy and back. Thus, the motion of the pendulum can be best described by the term "period motion", hence choice B.
If however, forces do act on the pendulum, and if they acts as to damp the pendulum, it will oscillate less and less as time goes by, and eventually come to a stop (in the real world this damping force is usually air resistance ). And if the force acts in such a way that it increases the oscillations, the pendulum will swing higher and higher, and the system will go haywire! :)
Describe the relationship between force and mass when the acceleration of two objects remain constant
Answer:
If they both remain constant they ain't moving, It states that the rate of change of velocity of an object is directly proportional to the force applied and takes place in the direction of the force. It is summarized by the equation
Explanation:
An endothermic reaction is defined as a reaction that _____.
A. requires heat or light
B. releases heat or light
C. has more than one product
D. has more than one reactant
Answer:
B.) Releases heat or light
Explanation:
A slinky forms it’s third harmonic standing wave when the input frequency is 24 Hz. What is the fundamental frequency of the slinky? Will an input frequency of 28 Hz create a standing wave? Explain your answer.
Answer: The fundamental frequency of the slinky = 8Hz
An input frequency of 28 Hz will not create a standing wave
Explanation:
Let Fo = fundamental frequency
At third harmonic,
F = 3Fo
If F = 24Hz
24 = 3Fo
Fo = 24/3 = 8Hz
If an input frequency = 28 Hz at 3rd harmonic
Let find the fundamental frequency
28 = 3Fo
Fo = 28/3
Fo = 9.33333Hz
Since Fo isn't a whole number, it can't create a standing wave
5. What two factors can increase the force of air resistance for an object?
Answer:
The two most common factors that determine the air resistance are the speed of the object and its cross-sectional area. Greater speed causes greater air resistance, and increased area increases air resistance as well. It also depends on an object's shape.
Which of the following is NOT a
state of matter?
A. gas
B. light
C. liquid
D. solid
Answer:B
Explanation:
Answer:
b
Explanation:
Because light is not a state of matter
What is electrical
energy?
A
holds the atoms in the molecule
B holds protons and neutrons in the nucleus
C energy carried by light
D energy of moving electrons
Help meeeeeeee
30 points
NEED HELP please.
1.) A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 46 degrees. What is the angle of the incident?;
2.) A ray of light reflects from a plane mirror with an angle of incident of 25 degrees. What is the angle between the plane of the mirror and the reflected beam?
Answer:
1. 23°
2. 65°
Explanation:
1.
The law of reflection provides that for the same medium, the angle of reflection equals the angle of incidence.
Similarly, here, angle of incidence and reflection will be 46°÷2=23°
2. Since the normal, angles of reflection and incidence lie on the same plane and also the angles of reflection and incidence are equal then the angle between the plane of the mirror and the reflected beam will be given by 90-25=65°
Final answer:
To address the two light reflection questions: 1.) The angle of incidence, when the angle between incident and reflected beams is 46 degrees, is 23 degrees. 2.) When a light ray reflects from a mirror with an angle of incidence of 25 degrees, the angle between the plane of the mirror and the reflected beam is 65 degrees.
Explanation:
The question involves understanding the law of reflection, which states that the angle of incidence is equal to the angle of reflection. This law is fundamental in analyzing how light interacts with reflective surfaces such as mirrors.
1.) If the angle between the incident and reflected beams is 46 degrees, then considering the law of reflection, we must recognize that the angle of incidence is half the angle between the beams because the incident ray and the reflected ray make equal angles with the normal to the mirror surface. Therefore, the angle of incidence is 46 degrees / 2, resulting in an angle of incidence of 23 degrees.
2.) Given an angle of incidence of 25 degrees, the reflected beam will also be at an angle of 25 degrees with the normal (due to the law of reflection). The angle between the plane of the mirror and the reflected beam, which is asked for, is not the same as the angle of reflection. In this case, since angles are measured from the normal, the angle between the mirror plane and the reflected beam is 90 - 25 = 65 degrees.
What is the dry adiabatic rate?
Answer:
Explanation:
he dry adiabatic rate is the rate at which dry air changes its temperature as a result of expansion or compression. The dry adiabatic rate is 1.0o C/100 meters. Air rises and cools at the dry adiabatic rate up to the level of condensation where dew point temperature is reached.
The dry adiabatic rate is the rate of temperature change in unsaturated air as it ascends or descends in the atmosphere, approximately 1 degree Celsius per 100 meters. This rate applies until the air becomes saturated, after which it cools at the wet adiabatic rate.
Explanation:The dry adiabatic rate, often used in meteorology, refers to the rate at which a parcel of dry or unsaturated air changes temperature as it moves vertically in the atmosphere. This rate is approximately 1 degree Celsius per 100 meters (or 10 degrees Celsius per kilometer) of ascent or descent. However, this rate holds true only for dry or unsaturated air; once air becomes saturated, it cools at a different rate known as the wet adiabatic rate.
To illustrate, imagine a balloon filled with air that's heated and starts to rise. As the balloon ascends, the pressure around it decreases. This causes the air in the balloon to expand and cool. This cooling process continues at the dry adiabatic rate until the air in the balloon becomes saturated.
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5. Describe the sequence of mechanical
energy events that lets you hear the muffled
sound of a radio from inside your neighbor's
closed house. Write your response in your
Science Journal. sc.7.P.10.3
Answer:
Answer:
Starting from the beginning.
There is a radio signal that is received by the radio.
The radio interprets the signal and produces a current in response to it.
That current goes to a membrane that oscillates producing sound, the oscillation of the membrane is the first mechanical energy event here.
These oscillations can travel in material mediums, for example, the air. Then there is a production of waves (soundwaves) that travel in the air (second event).
Those waves now hit the wall that separates you and your neighbor, as the wall is made of a material, the soundwaves can travel through it, but they will be dispersed (a part of the waves rebounds on the wall, and another part is dissipated as the wave travels through the wall), there is also a transmitted part of the wave, that is now in your house. (this change of medium will be the third event). Now only the lower frequencies survive, this is why the sound is "muffled".
Those remaining frequencies now travel in your house, and when they reach your ear, your ear sends a signal to your brain and your brain interprets them as sound. The wave interacting with your ear will be the fourth and last mechanical energy event.
Explanation:
Final answer:
The sequence of mechanical energy that allows you to hear a muffled radio sound includes the radio's speaker vibrations creating sound waves, which then cause a house's walls to vibrate and transfer the sound externally.
Explanation:
The sequence of mechanical energy events that allow you to hear the muffled sound of a radio from inside your neighbor's closed house starts with the radio producing sound waves. These sound waves are created by the vibration of the radio's speakers, which cause the air molecules around them to vibrate as well. The vibrating air molecules then transfer the energy to the walls of the house, which vibrate slightly and in turn, transfer some of this vibrational energy back to the air on the outside of the house. Despite being reduced in energy, these vibrations can still create sound waves in the outside air that may reach your ears as a muffled sound.
During the process, energy is conserved as it changes forms, from the electrical energy used to power the radio turning into sound energy, which is then transformed into mechanical energy as the house's walls and structure vibrate. Ultimately, when these vibrations reach your ears, tiny bones in your inner ear vibrate, translating these mechanical vibrations into electrical signals that your brain interprets as sound.
Which compound should require the highest temperature to melt? LiF, NaF, LiCl, NaCl
Answer: lif
Explanation:
lif is the answer i checked it and the person above is one hundred percent wrong. lif is the right answer.
compare water(H20) to a single atom of oxygen(O) . is each an element or a compound explain
Answer:
compound
Explanation:
A compound is composed of two or more different elements combined together. Water is made up of 2 atoms of hydrogen and one atom of oxygen combined together. Water is therefore made up of two separate elements, which makes it a compound.
Water (H₂O) is a compound made of hydrogen and oxygen in a fixed ratio, while a single atom of oxygen (O) is an element.
Elements consist of only one type of atom, while compounds are made of multiple types of atoms.
Which sound wave features are being described?
Number of wavelengths
----------------------------------- : ⇒ Frequency
Time
Distance traveled
-------------------------- : ⇒ Speed
Time
Some features of sound wave that describes the motion of the sound wave include wavelength, speed and frequency.
Features of sound wave
There are several features of sound wave that decribes the motion of the sound wave and some of the features include;
Wavelength: This is the distance traveled by the sound waveFrequency: This the number of cycles per unit time made by the sound waveSpeed: This is the rate of change of distance with time of motion of the wave.Learn more about sound wave here: https://brainly.com/question/1199084
Groups of stars that are smaller than galaxies are called
(two words)
Enter the answer
Final answer:
Groups of stars smaller than galaxies are known as star clusters, including open clusters with younger stars, and are much smaller than galaxies like the Milky Way.
Explanation:
Groups of stars that are smaller than galaxies are known as star clusters. These formations range from hundreds to thousands of stars bound together by gravity. Among star clusters, there are two main types: open clusters and globular clusters. The former consists of younger stars that typically have formed out of the same nebula and can include up to a few thousand stars.
Examples include entities like the Jewel Box. On the larger scale, galaxies like the Milky Way are vast collections of stars, with numbers ranging from a few million to many billions. The Milky Way, which contains all the stars we can see in the night sky, has a diameter of about 100,000 light-years, contrasting with the smaller star clusters.
Explain why decomposition use solar energy?
Answer: Decomposition uses solar energy because for hydrogen and oxygen.
Explanation:
Earthquakes can cause great damage and injury. The solution to this problem is to warn people about possible earthquakes through various forms of media: radio, television, on-line sources. Scientists constantly monitor seismic data to warn people of potential earthquake danger. Which statement BEST summarizes the quality of the solution to this problem?
A) The solution is well designed as early warning can help scientists control earthquakes.
B) The solution is poorly designed since we are not doing anything to stop the destruction of an earthquake.
C) The solution is adequate considering the resources we have; we cannot stop an earthquake but we can alert people so they can protect themselves.
D) The solution is well designed because seismic data can help scientists stop earthquakes as well as warn the human population of the up-coming possible dangers.
Approximately eleven million people are diagnosed with cancer each year. Thus, many countries, including the United States, spend millions of dollars annually on cancer research. Which of the following statements is best supported by the above information?
A.
The United States is the only country concerned about cancer.
B.
More money should be spent on science.
C.
Social concerns can affect science.
D.
Cancer is the only disease that should be researched.
Answer this question and you get brainliest. Ok, ok
9+10=?
Answer:
C.
Explanation:
(Coronita virus)
17
Answer:
i dont know
Explanation:
What is a scalar quantity? Vector quantity? How are these two different?
Answer: Scalar quantity has magnitude but no direction while a vector quantity has both magnitude and direction.
Explanation:
A scalar quantity is a physical quantity that has magnitude but no direction. Examples are
- temperature, measured in Kelvin
- distance, measured in metres
- speed, measured in metres per second
Vector quantity, on the other hand, is a physical quantity that have both magnitude and direction. Examples are:
- velocity, measured in metres per second (m/s)
- force, measured in newton
- displacement, measured in metres
What is the current in a 160V circuit if the resistance is 2Ω? V= I= R =
Answer:
80 amperes
Explanation:
Current in the circuit = ?
Voltage in the circuit = 160 Volts
Resistance = 2 Ω
Voltage = Current x Resistance
V = IR
160V = I x 2 Ω
I = 160V / 2 Ω
I = 80 Amperes
Therefore the current in the circuit is 80 amperes :)
The current through the 160V circuit with a resistance is 2Ω is 80 Ampere.
What is the current flowing through the circuit?From Ohm's law, the relationship between voltage (V), current (I), and resistance (R) can be expressed as:
V = I × R
Given the parameter:
Voltage V = 160 V
Resistance R = 2 ohms
Current I = ?
Plug the given value into the equation and solve for the current I:
V = I × R
160 = I × 2
I = 160/2
I = 80 Ampere
Therefore, the current I is 80 Ampere.
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pls help asap
What is the mechanical advantage of this pulley system?
A. 1/2
B. 1
C. 2
D. 3
Answer:
D
Explanation:
i took lots of time on the lesson
Which of the following best describes a direct current?
A. A circuit that has only series or only parallel components
B. Charge that jiggles back and forth very quickly
C. Charge that moves in a single direction
D. A circuit that has both series and parallel components
Best description a direct current is Charge that moves in a single direction.
What is charge?Charged material experiences a force when it is exposed to an electromagnetic field due to the physical characteristic of electric charge. You might have a positive or negative electric charge. Unlike charges attract one another while like charges repel one another.
A positively charged nucleus and one or more negatively charged particles known as electrons make up an atom.
Best description a direct current is Charge that moves in a single direction.
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Answer:
C. Charge that moves in a single direction
Explanation:
Help ASAP, will give brainliest!!!
Which type of nuclear reaction produces a neutron, energy, and one large nuclei?
A. nuclear fission
B. nuclear fusion
C. thermodynamic reaction
D. combustion
Answer:
A
Explanation:
I think it is Nuclear fission because it can release a large amount of energy.i hope this helps☺️
Why is your reflection upside down (inverted) on a spoon when you are far away from it
Answer:
because the spoon it is concave
Explanation:
How do lines of latitude affect how direct or indirect the Sun’s rays are on the Earth?
Answer:
Explanation: We have seasons because Earth's axis – the imaginary line that goes through the Earth and around which the Earth spins — is tilted. It's tilted about 23.5 degrees relative to our plane of orbit (the ecliptic) around the Sun. As we orbit our Sun, our axis always points to the same fixed location in space. Our northern axis points almost directly toward Polaris, the North Star.
What is meant by the phrase "color by subtraction of
light?"
Answer: adding green, red, and blue light produces white light
Explanation:the process of color subtraction is a useful way of predicting the color appearance of an object, if the color of the light and pigments are known. If you use the complementary color scheme, the colors of light that will be absorbed by a given material are determined.
Final answer:
The phrase "color by subtraction of light" describes the process where color is created by absorbing certain wavelengths while reflecting others, used in subtractive color theory applications like printing and photography.
Explanation:
Subtractive Color Theory
The phrase "color by subtraction of light" refers to the subtractive color theory, which is a method of creating color by filtering out certain wavelengths of light. This concept is commonly used in color printing and photography, where colors are produced by absorbing parts of the light spectrum and reflecting the rest. For example, when blue paint is applied to a canvas, it absorbs all colors except for blue, which is reflected back to the eyes of the viewer.
In subtractive color mixing, the primary colors are red, yellow, and blue. When these are mixed, they produce the secondary colors of green, orange, and purple. This is the opposite of additive color theory, where colors are created by mixing different lights (red, green, and blue) and the combination of all creates white light. The sensation of color in photographic transparencies is achieved by the substrate absorbing specific wavelengths of light — for instance, to display blue, the material must absorb yellow light.
Subtractive color theory is essential in the development of the CMYK color model, which uses cyan, magenta, and yellow as primary colors, and is central to processes such as full-color printing and other applications where pigmentation and light reflection play a critical role in color creation.
We all know that the Earth cycles through a regular pattern of days and nights.
What causes this pattern?
A) The tilt of the Earth on its axis.
B) The sun turns on, and then goes out.
C) The rotation of the Earth on its axis.
Eliminate
D) The rotation of the sun around the earth.
IF SOMEONE CAN ANSWER THESE QUESTIONS ILL GIVE BRAINLIEST!!!!! Pls
Answer:
4.Gravity
5.compressible
6.shear force
Explanation:
PLEASE HELP BRAINLIEST!!! 15 MIN!!!
A current can be produced in a coil of wire _____.
a.as a core of iron is being thrust through the coil
b.when a magnet rests in the coil
c.when a core of iron rests in the coil
d.as a magnet is being thrust through the coil
D.
A current can be produced in a coil of wire as a magnet is being thrust though the coil.
Brainliest, please?