If light intensity obeyed an inverse square law you would expect to find the intensity of light to decrease as the square of the distance increases
A) true
B) false
the majority of the fossils found in Indiana have been marine fossils. These include things like mollusks, coral, and clam relatives.
The existence of so many marine fossils here indicates that
A) we don't know as much as we think.
B) Indiana was once covered by the ocean.
C) a giant flood must have brought them here.
D) marine animals create fossils much more readily.
The answer is b because Indiana is close by shore and is possible that is might have been under the ocean.
There is a close relationship between magnetic forces and the generation of electric current. Explain how magnets can be used to generate electric current and how electric current can be used to create electromagnets. For each, give an example of a device you would find around the home.
Answer:
If a magnet is continuously moved to and fro in a coil or vise versa , due to change in magnetic field passes through a coil , electric current can be produced, it called electromagnetic induction.
And if current flows in a coil , it will behave like a magnet , that is called Electromagnetism.
Explanation:
What is electromagnetic induction and Electromagnetism ?According to the Faraday's law , when magnetic field passing through a coil is changed , an electric potential is developed , that causes current , the phenomenon is called Electromagnetic induction.In it ,the induced emf (potential)is directly proportional to the rate of change of magnetic flux,[tex]e = N. \frac{(B.A)}{dt}[/tex] Example- Generator.According to the Clock wise rule , when current flows in a coil , according to the direction of current , its one face become N pole and S pole, thus it becomes a magnet or tiny magnet .Example- Solenoid.Hence Electromagnetic induction and electromagnetism can be defined.
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Which statements accurately describe the waste generated by nuclear reactions? Check all that apply. It is hazardous for hundreds to thousands of years. Some waste can be recycled and used again. It is hazardous to living organisms forever. Some waste can be completely transformed into energy. It is not hazardous after a couple of years.
Compared to oceanic crust , continental crust is generally
Continental crust is typically thicker, more complex in its composition and predominantly made of granite compared to oceanic crust which is thinner, simpler and mainly composed of basalt. The continental crust covers 45% of earth's surface, whereas oceanic crust covers 55%. The continental crust, being thicker and more buoyant, is generally not subducted in plate tectonics unlike the oceanic crust.
Explanation:Compared to the oceanic crust, the continental crust is typically thicker and composed predominantly of different types of rocks. While oceanic crust is about 6 kilometers thick and made primarily of basalt, continental crust varies between 20 to 70 kilometers in thickness and is primarily composed of a volcanic class of silicates called granite.
Notably, the crust is the easiest layer for geologists to study and makes up only about 0.3% of the total mass of Earth. The continental crust covers about 45% of the surface, some of which lies beneath the oceans. The typical density of the crust, both oceanic and continental, is around 3 g/cm³.
The continental crust tends to be older and more complex than the oceanic crust. It consists of many different types of rocks formed over billions of years from many different types of processes. Due to the increased thickness and complexity of its composition, the continental crust is more buoyant than the oceanic crust and hence is not subducted during the process of plate tectonics. Oceanic crust, being thinner and denser often gets subducted beneath the continental crust at convergent boundaries.
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This law states that oppositely charged objects will exert an attractive force on each other while two objects that have like charges will repel each other. The attractive force varies with the size of the charges as well as the distance between them.
Answer:
Its Law of attraction
Explanation:
in which layer of the atmosphere do communication satellites orbit Earth?
Answer:
In the exosphere
Explanation:
PLEASE HELP!!! FIRST IS BRAINLIEST!!!
The material or substance that a wave moves through is called a _____
. The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the ______
of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the _______
of the medium.
The material or substance that a wave moves through is called a medium. The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the type of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the temperature of the medium.
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What is shown in the diagram?
A). A Generator
B). A Motor
C). A Turbine
D). An Electromagnet
D). An Electromagnet
what is transferred by a radio wave
A radio wave transfers energy and information through space via oscillating electric and magnetic fields.
A radio wave is a type of electromagnetic radiation that transfers energy through space. When a radio transmitter generates a signal, it creates a rapidly oscillating electric field, which in turn creates a magnetic field that propagates through the surrounding space at the speed of light.
This changing magnetic field induces a corresponding electric field in any conductive material (such as an antenna) that intercepts the wave. The electrical energy carried by the radio wave is then transformed into an electrical current that can be amplified and processed by electronic circuits.
In practical terms, radio waves are used to transmit various types of information, including voice and music for broadcasting, data for wireless communication, and navigation signals for GPS. The specific type of information transmitted by a radio wave is encoded in its frequency, amplitude, and modulation, which determine the characteristics of the wave and allow it to be decoded by the receiver.
Therefore, Through the use of oscillating electric and magnetic forces, radio waves transmit information and energy through space.
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A small 22 kilogram canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy
when something is Plumb it is
What gas is the líquid water turning intro?
The relative density of oak wood is 0.64 .find the density in the cgs system
A rubber rod rubbed with fur acquires a charge of -4,8×10(-9)C. What is the charge on the fur? How much mass is transferred to rod?
describe a situation that demonstrates that water waved carry energy
The energy possessed by the water waves in ocean will be due to the gravitation of the moon and the sun.
What is wave energy?Wave energy is a form of renewable energy that can be harnessed from the motion of the waves. There are several methods of harnessing wave energy that involve placing electricity generators on the surface of the ocean.
Due to the gravitation of moon tides, winds, and weather, waves can vary in size and strength. As waves roll through the ocean, they create kinetic energy, or movement.
This movement can be used to power turbines, which, in turn, create energy that can be converted into electricity and power. There are also several ways of harnessing wave energy that utilize the up and down motion of the waves to power pistons/turn generators.
Hence the energy possessed by the water waves in ocean will be due to the gravitation of the moon and the sun.
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For spherical mirrors, how many reference rays are used to find the image point? A two B three C four D six
Elaborate on the suitability of "cola" type drinks to polish chrome surfaces.
What is the wavelength of this wave
10 cm
you can see the distance from peak to peak or the distance between the starting point to the end of the first whole wave
Answer:
It's actually cannot be determinedExplanation:
I just had this question and got it right
The ash produced when solid waste is incinerated is ______ than the original waste.
A. Less toxic
B. More toxic
C.as toxic
D. More recyclable
Highly appreciate the help thanks.
Assuming no air resistance, all projectiles have:
Explanation:
The motion of an object that move only under the action of gravity is called projectile motion.
All projectile have only acceleration due to gravity. In projectile motion, the horizontal movement of an object equals zero.
Equation of motion for a projectile are :
In horizontal motion,
Acceleration = [tex]a_x=0[/tex]
Velocity- time = [tex]v_x=v_{0x}[/tex]
Displacement - time, [tex]x=x_0+v_{0x}t[/tex]
In vertical motion,
Acceleration = [tex]a_y=-g[/tex]
Velocity- time = [tex]v_y=v_{0y}-gt[/tex]
Displacement - time, [tex]y=y_0+v_{0y}t-\dfrac{1}{2}gt^2[/tex]
Hence, this is the required solution.
When there is no air resistance, all projectiles accelerate in a vertical downward direction, which is equal to the acceleration due to gravity.
When an item is launched into the air, its motion is called a projectile motion when there is negligible air resistance and just gravity acting on it after the initial force that propels it into the air. A projectile is what it is, and its trajectory is what it took to get there.
The most important concept in projectile motion is that horizontal and vertical movements are independent of one another when air resistance is disregarded.
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which would ultimately cause the armature in an electric motor to spin?
In an electric motor, the armature spins due to the interaction between the magnetic field produced by the stator (the stationary part of the motor) and the magnetic field produced by the armature itself.
Here's a simplified explanation of the process:
Supplying Power: When electric current flows through the motor's coils (which are part of the armature), it creates a magnetic field around the coils. This process usually involves a commutator and brushes to direct the current flow in the coils effectively.
Magnetic Fields: The stator also has its own set of coils that are arranged in such a way that when current passes through them, they create a magnetic field. This magnetic field interacts with the magnetic field produced by the armature.
Electromagnetic Force: Due to the interaction of these magnetic fields, an electromagnetic force is generated. This force causes the armature (which contains the coils) to rotate. The direction of rotation depends on the direction of the current and the orientation of the magnetic fields.
Continuous Rotation: As long as the electric current is supplied to the motor, this process continues, resulting in continuous rotation of the armature.
In summary, it's the interaction of magnetic fields generated by the armature and the stator, along with the flow of electric current, that causes the armature to spin in an electric motor.
How do electrons behave in a good insulator?
why is data organization important
Answer:
cuz it is important
Explanation:
Which statement about energy generated from wind is true?
A. Wind is free "fuel," and government taxes on its use are lower than those on fossil fuel are
B. Wind power is abundant everywhere, and battery storage of excess power is inexpensive.
C. Wind power uses more water than coal power plants, but it is a far safer power source for wildlife.
D. Wind power gives off no greenhouse gases, but some people feel it spoils the view of the landscape.
The true statement about wind energy is "wind power gives off no greenhouse gases, but some people feel it spoils the view of the landscape".
Renewable energiesRenewable energies are energy sources that do not emit carbon dioxide or other greenhouse gases. They help in lowering carbon foot-print, since they do not emit carbon dioxide gases.
Examples of renewable energiesWind energySolar energyHydro-electric energy, etcThus, the true statement about wind energy is "wind power gives off no greenhouse gases, but some people feel it spoils the view of the landscape".
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Explain the connections between reactants, products, and limiting reactant.
A piano tuner strikes a tuning fork at the same time he strikes a piano key with a note of a similar pitch. If he hears 3 beats per second, and the tuning fork produces a standard 440 Hz tone. Then what was the frequency produced by the struck piano string? a 434Hz or 446Hz b 437 Hz c 437Hz or 443 Hz d 443 Hz
Energy that does not involve the large-scale motion or position of objects in a system is called:
A- Kinetic Energy
B- Potential Energy
C- Nonmechanical Energy
D- Conserved Energy
What is the total amount of energy required to melt 100 grams of ice at 0DC to liquid water at 0DC?
Answer: 301 kJ of energy
Explanation:
what the maximum age human have?
depends how healthy u r, so if u r an average person with average health, then prob between the ages of 70 to 90