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Have you ever seen the two different sides of a battery? One side is often labelled with a positive sign, and the other with a negative sign. Inside the battery are four cells where two processes take place. One process uses electrons, and the other creates electrons. When the electrons flow, it creates electricity.
Drums convert mechanical energy into sound energy.
When a musician bangs his/her drumstick on the drum, the motion makes a sound. This movement turned motion into sound.
Related Questions
A remote control car travels at a uniform speed of 3.5 m and reaches its destination in five minutes. How far did the remote control car travel
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The elapsed time is 5 minutes.
You can use the formula
speed = distance / time.
Clearing the distance, which is what we want to find, we have:
distance = speed*time.
However, the speed is in units of seconds and the time in units of minutes. To perform the operation we need to have everything in the same units.
So.
5minutes x 60seconds / 1minute = 300 seconds
Finally:
distance = 3.5m / s * 300s = 1050 meters.
The remote control car traveled 1050 meters
the half-life of iodine-131 is 8 days. if a sample originally contains 0.96 g of the isotope, how much will remain after 16 days
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In this problem, the half-life of iodine-131 is 8 days. This means that after 8 days, only half of the initial sample will be left. After another 8 days (16 days), the sample will be reduced by another factor 1/2, so only 1/4 of the initial sample will be left.
Since the initial sample was 0.96 g, after 16 days the amount of iodine left is
[tex]m= \frac{1}{4}(0.96 g) =0.24 g[/tex]
After 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.
How the half-life of iodineThe half-life of iodine-131 is 8 days, which means that every 8 days, the amount of iodine-131 in a sample will be reduced by half.
After 16 days, which is two half-lives, the amount of iodine-131 remaining can be calculated as follows:
First half-life: 0.96 g / 2 = 0.48 g remaining
Second half-life: 0.48 g / 2 = 0.24 g remaining
Therefore, after 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.
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If you lift a 250 N weight 3 meters off of the ground, how much work have you done in joules?
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the gravitational force between two objects increase as the mass increases or distance decreases
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Explanation:
According to Newton's Gravitational law:
[tex]F_g = \frac{Gm_1m_2}{r^2} [/tex]
As you can see the gravitational force is directly proportional to the masses of the objects while inversely proportional to the square of distance (r^2) between them.
Hence, yes, your statement is true!
the gravitational force between two objects increase as the mass increases or distance decreases
In a closed circuit containing one resistor and a battery, if the voltage in the battery increases, the current going through the resistor increases. Why does this occur?
Answers
V is voltage in volts
I is current in amps
R is resistance in ohm's
So, if we're trying to solve for I, aka current, then we should rearrange the equation.
V=IR
V/R = I
So, if you divide a larger number (Volts) by the same number (Ohm's), then you must get a larger number.
Ex.
The voltage in the circuit is 20V, the resistance is 5 Ohms.
V/R = I
20/5 =I
4 =I
But now if we increase voltage to 40 and keep resistance the same, we will prove that the current is higher!
V/R =I
40/5= I
8 = I
Therefore, we just proved that the current going through the same resistor will increase, as when we increased our voltage from ,20V to 40V, we got an increased current as well. Hope this helps you!! ((:
In a closed circuit there is a battery and resistor, from ohm's law if the voltage in the battery increases then the current in the resistor will also increase.
What is Ohm's law?The connection between current, voltage, and resistance is described by Ohm's law. The voltage or potential difference across numerous materials determines how much constant current flows through them. As a result, if the voltage V (measured in volts) across two ends of a wire made of one of these substances is tripled, the current I (measured in amps) also triples, and the ratio V/I stay the same.
The resistance, R, for a specific material is it's V/I ratio and is expressed in ohms. Over extremely wide voltage and current ranges, the resistance of substances for which Ohm's law is applicable remains constant. The mathematical model for Ohm's law is V/I = R.
Therefore, from the formula of ohm's law if the voltage in the circuit will increase then the current will also going to increase with it.
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a blank is an electric circuit that produces a magnetic field.
whats the blank?
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Answer:
Explanation: A coil is an electric circuit that produces a magnetic field
Please help! Just answer these questions
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2. Winter solstice- the day of the year with the shortest hours of daylight- December 21 or 22
Summer solstice- the day of the year with the longest daylight- June 21 or 22
Spring equinox- the equinox in spring- march 21 or 22
Fall equinox- the time when the sun crosses the plane of the earth's equator- September 21 or 22
Hope this helps
what determines the path that an object in projectile motion follows
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ANSWER:
C) Gravity & Inertia.
Choices
A) gravity only
B) inertia and air resistance
C) gravity and inertia
D) gravity and air resistance
n the picture of a planet in orbit around its star area a is double that of area b. What is true of the time the planet takes to travel A1A2 as compared to B1B2
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1) the planets move in ellipses (with one focus on the sun)
2) A line joining the sun and the planet traverses equal areas in equal times
3) The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Applying the second law, we get that the time to transverse A1A2 is double the time needed to transverse B1B2 (even though B1B2 is longer, because the planet is closer to the sun, it goes faster). The second law simply states that time is proportional to area in such graphs.
what is the mass of an atom with seven protons.seven neutrons,and eight electrons?
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Explanation:
It is given that the atom has 7 protons this means that atomic number of the atom is 7.
As we know that atomic mass of an atom is the sum of total number of protons and neutrons present in the atom.
So, atomic mass of the given atom = no. of protons + no. of neutrons
= 7 + 7
= 14
Thus, we can conclude that the mass of given atom is 14 g/mol.
The mass of an atom with seven protons, seven neutrons, and eight electrons is 14 g
Given the following information from the question
Number of protons = 7 protons
Number of neutrons = 7 neutrons
Number of electrons = 8 electrons
The mass number of an atom is the sum of its atomic number and neutron number.
Mass number = number of neutron + atomic number
Since the atomic number of an element is equal to the number of protons of such elements, hence;
Mass number = 7 + 7
Mass number = 14 g
Hence the mass of an atom with seven protons, seven neutrons, and eight electrons is 14 g
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What si the name of the state change water is going through as it boils?
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~~~hope this helps~~~
~~have a beautiful day~~
~davatar~
What is the abbreviation for the SI unit for electric potential
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Match the adaptations with their benefits.Match the adaptations with their benefits.
the wasp’s stinger
the peacock’s bright plumage
the owl’s large eyes
the bear’s fur
help to search for food
arrowBoth
protection against predators
arrowBoth
attraction to obtain a mate
arrowBoth
maintain homeostasis
arrowBoth
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Answer: the wasp’s stinger - protection against predators
the peacock’s bright plumage - attraction to obtain a mate
the owl’s large eyes - help to search for food
the bear’s fur - maintain homeostasis
Explanation:
An adaptation can be define as any change that occurs in the morphology, physiology and genetic make up of the organism which makes it suitable for survival in it's natural environment even in adverse conditions and reproduce.
The following are the adaptations with their benefits.
the wasp’s stinger - protection against predators
The wasp stinger generally exhibit toxic substance or allergy causing agent which the wasp use when it finds a predator around it.
the peacock’s bright plumage - attraction to obtain a mate
The male peacock exhibit bright and showy feathers which is a phenotypic advantage for attraction of female mates for copulation. This phenomena is called as sexual selection.
the owl’s large eyes - help to search for food
The owl's large eyes allows the night vision. There are many rods and cones present in the eyes of the owl so as to allow better vision in night and allow it to observe and capture prey.
the bear’s fur - maintain homeostasis
The bear's fur are insulating in nature that means it does not allow the entry of external air. Hence, helps in retaining the heat in the body in otherwise cold environment. Therefore, helps in maintaining the homeostasis (the tendency of the body retain it's constant internal environment as compared to changing external environment).
a scientist wants to analyze signals from outer space. Her lab has sensors to dect sound waves, radio waves, and seismic waves. Which of these sensors will provide the best information?
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In fact, sound waves and seismic waves are mechanical waves, which means they are waves which move through a medium, but space is basically vacuum, so there is no medium and they cannot propagate through vacuum. Instead, radio waves are electromagnetic waves, which can also propagate without a medium, so radio waves can also propagate through space.
Final answer:
The most suitable sensor for analyzing signals from outer space is radio wave sensors due to their economical production cost and efficiency in transmitting through interstellar space and atmospheres, thus providing valuable information about the sources of the waves.
Explanation:
In analyzing signals from outer space, the best sensor to use among sound waves, radio waves, and seismic waves would be radio wave sensors. Radio waves are the lowest-frequency and lowest-energy band of the electromagnetic spectrum, making them not only inexpensive to produce but also adept at traveling through interstellar dust, gas, and planetary atmospheres without significant absorption.
This capability is crucial for receiving unimpeded signals from space. The information collected through radio waves can reveal the chemistry and physical conditions of their sources. Moreover, radio waves are already extensively used in various communication systems on Earth. Therefore, in the context of SETI (Search for Extraterrestrial Intelligence) or any other form of cosmic study, radio waves are the most suitable and effective for gathering data from outer space.
When a book is resting on a level table and you are not pushing on it , is there a frictional force between the book and table ?
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A parent isotope has a half life of 1 million years. If a rock contained 20 mg of the parent isotope when it formed, how much parent isotope would be left after 2 million years?
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The coefficient of linear expansion of iron is 1.0 × 10−5 per C◦ . The surface area of an iron cube, with an edge length of 5.0 cm, will increase by what amount if it is heated from 10◦ C to 60◦ C?
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Length edge is 5cm
Initial surface area of cube A = 6L ∧²
= 150cm∧²
The edge length of cube after being heated from
10°C to 60°C is
L = L[I +a dt] where the dt is = 60-10 = 50°C
5.0025cm
A surface area of the cube after heated is
A' = 6L' ∧²
= 150.1500375 cm∧²
The increased area is = A' -A = 0.15cm∧²
Based on the linear expansion of iron, the increase in area is 0.15cm²
What is linear expansivity?Linear expansivity is the increase in length per unit length of a material for every degree rise in temperature.
The linear expansion of iron is α = 1 × 10⁻⁵/°C
Length edge of the iron cube is 5cm
the surface area of cube A = 6L²
Initial surface area = 6 * 5² = 150cm²
The edge length of cube, L₂ after being heated from
10°C to 60°C is calculated using the formula below:
L₂ = L[I + α*dt]where
α is the linear expansion of irondt is the temperature differencedt = 60-10 = 50°C
L₂ = 5(1 + 1 × 10⁻⁵ * 50)
5.0025cm
The surface area of the cube after heated A' is
A' = 6 * 5.0025²
A' = 150.1500375 cm²
The increased area, A' -A = (150 - 150.1500375) cm²
The increase in area is 0.15cm²
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A 12 volt parallel circuit is drawing 2 amps what is the total amount of power consumed?
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what two forces are there when you skydive
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2). The force of reason and self preservation, telling you that this is crazy, and you must NOT jump out of a perfectly good airplane that's not on the ground.
Two footballs (A & B) are thrown with the same amount of force. Football A has a greater mass. Describe the acceleration for each football.
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[tex]F=ma[/tex]
where F is the force, m the mass and a the acceleration.
A force F is applied to football A, whose mass is [tex]m_A[/tex], and so the acceleration of this football will be given by (re-arranging the previous equation)
[tex]a_A = \frac{F}{m_A} [/tex]
Similarly, the acceleration of football B will be
[tex]a_B= \frac{F}{m_B} [/tex]
where [tex]m_B[/tex] is the mass of football B, and where the force F applied to the two footballs is the same.
Since football A has greater mass than football B, [tex]m_A \ \textgreater \ m_B[/tex], if we compare the two previous formula we see that the acceleration of football B is greater than the acceleration of football A:
[tex]a_B \ \textgreater \ a_A[/tex]
Therefore, if the same force is applied to the two footballs, football B will accelerate more than football A.
What metric measure would be best to use when measuring the amount of water given to a plant
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The best metric is a combination of volume, frequency, soil moisture, evapotranspiration rate, and plant growth and health observation.
When measuring the amount of water given to a plant, it's crucial to choose a metric that accurately reflects the plant's needs and ensures optimal growth. The best metric to use for this purpose is:
1. **Volume of Water**: Measure water in milliliters or liters to quantify the actual amount provided to the plant.
2. **Frequency**: Track how often water is given, whether daily, weekly, or based on the plant's specific requirements.
3. **Moisture Content**: Use a soil moisture meter to gauge the water content in the soil around the plant's roots.
4. **Evapotranspiration Rate**: Consider the rate at which water evaporates from the soil and is transpired by the plant. This can help determine the water loss and replenishment needed.
5. **Plant Growth and Health**: Ultimately, the best measure is the plant's response. Monitor its growth, foliage appearance, and overall health to adjust watering practices accordingly.
By combining these metrics, you can ensure the plant receives the appropriate amount of water for optimal growth and health.
Makori drew the diagram below to show how a light microscope works.
Which best describes how Makori can correct the error in his diagram?
A) Change the label “Virtual image from objective lens” to “Real image from objective lens.”
B) Switch the locations of the eyepiece lens and the objective lens.
C) Move the light so it is shining downward from the eyepiece lens toward the objective lens.
D) Replace “Convex” with “Concave” on the label for the eyepiece lens.
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Makori can correct the error in his diagram by changing the label “Virtual image from objective lens” to “Real image from objective lens.”
What are the two types of lenses?Concave lensConvex lensWhich lens is used in light microscope?Convex lens is used in light microscope.
What is the difference between concave lens and convex lens?A concave lens is thinner in the middle and thicker at the edges. A convex lens is thicker in the middle and thinner at the edges.What is the objective of convex lens?They focus light for a clear picture.It is used in front of the eye to bend the incoming light.Focal point shortens and the light focuses properly on the retina.Thus , the real and inverted image is produced by objective lens of light microscope, which goes through convex lens of eyepiece.Therefore, Makori can correct the error in his diagram by changing the label “Virtual image from objective lens” to “Real image from objective lens.”
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A wire delivers 12.0 C of charge in 4.0 s.
What is the current in the wire?
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C=As
12=A(4)
A=3
The current of the wire is 3 Amperes.
After you rub a balloon on your hair it might stick to a wall. Why? Be specific.
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as the balloon is rubbed on hair, due to friction, the electron transfer takes place between them and as a result balloon acquire some charge. The balloon when touched with the wall sticks to it because of force of attraction between balloon and wall. the wall must have the charge opposite to what the balloon has on it. we know that unlike charge attract hence the balloon sticks to the wall.
explain why electromagnetic radiation sometimes act as a wave and sometimes as a stream of particles?
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Need help due tomorrow!
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2) The sun has more gravity than the Earth.
3) The gravitational pull of Earth causes the moon to orbit Earth.
4) The unbalanced force of gravity causes comets, meteors, and asteroids to collide with planets.
5) The force of gravity causes Earth to travel in a sideways path around the sun.
6) a. Most mass = Sun
b. Middle mass = Earth
c. Least mass = Moon
Batteries should only be removed from the premises by a licensed battery hauler for recycling. A) True B) False
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True
Explanation:Batteries carry acids and electrolytes which if comes in contact with human skin can cause severe effects and sometimes it can become fatal. Therefore a great care is needed while replacing batteries. To avoid any danger and harmful circumstances, batteries should always be replaced by a licenced battery haulers for recycling.
Plants use a process called cellular respiration in order to obtain energy from the food they produce during photosynthesis. When a plant undergoes cellular respiration, it...
Question 5 options:
produces sugar inside its cells.
breaks down the sugar inside its cells.
releases oxygen through its stomata.
absorbs sunlight through its chloroplasts.
Need IT ASAP
AND BRAINLYEST
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calculate the speed of a sound wave produced from a guitar if it creates 38 compressions each second with 0.57 meter wavelength
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How much heat is absorbed by a 66g iron skillet when its temperature rises from 7oC to 20oC?
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Q = mCΔT
Q = heat absorbed
m = mass = 66 g
C = specific heat of iron = 0.449 J/g.°C
ΔT = temperature change = 20 - 7 =13°C
Therefore,
Q = 66*0.449*13 = 385.242 J