Answer:
The answer is B
Explanation:
It's past tense and dad is singular
Final answer:
The correct answer is b: "Dad chose a striped tie to wear with his suit," as 'chose' is the appropriate simple past tense form of 'choose.' It's important to use the correct verb tenses to clearly convey when actions occur.
Explanation:
The question asks: Which sentence uses the correct form of the verb choose? The correct answer is option b: "Dad chose a striped tie to wear with his suit." This is because 'chose' is the simple past tense form of the verb 'choose,' which is appropriate given the context of a completed action.
Verb tenses are crucial for conveying when an action happens. In English, getting the irregular verbs right, such as 'choose,' requires familiarity with their present, past, and past participle forms. The incorrect options a, c, and d use 'chosed,' 'chosen,' and 'choose,' respectively, which are not correct in this context. 'Chosed' is not a word, 'chosen' is a past participle that needs an auxiliary verb, and 'choose' is the present tense form.
Any help is appreciated!
Answer:
a
Explanation:
A bag of books took three minutes to move you did 12,900 day of work how much power it was required to move the bag? A3 187B 7166C 71.66D 2322
Answer:
Power = Work / time
= 12900 J / (3*60)s
≈ 71.667 Watts
Answer:
71.66 watt is the power required to move the bag
Option: C
Explanation:
From the given question, Work done is 12900 J (work is the product of force and displacement) in 3 minutes.
We know that, rate of work done is the power.
[tex]\text { Power }=\frac{\text {work}}{\text {time}}[/tex]
Substitute the given values in the above formula to obtain power required to move the bag.
[tex]\text { Power }=\frac{12900 \mathrm{J}}{3 \times 60 \mathrm{s}}[/tex]
[tex]\text { Power }=\frac{12900 \mathrm {J}}{180 \mathrm {s}}[/tex]
[tex]\text { Power }=71.667 \mathrm{Watt}[/tex] (Joule per second is equal to watt )
Therefore the power required to move the bag is 71.66 watt.
Name four wave properties that are common to all members of the electromagnetic spectrum?
Answer:
1.transfer energy from one place to another.
2.can be reflected.
3.can be refracted .
Explanation:
I only know that much
The four common properties of waves in the electromagnetic spectrum are wavelength, frequency, amplitude, and speed. These properties are integral to defining how electromagnetic waves behave and are used in technological applications.
Four wave properties that are common to all members of the electromagnetic spectrum include:
Wavelength: This is the distance between two consecutive peaks or troughs of the wave. Different parts of the electromagnetic spectrum have different wavelengths, from short gamma rays to long radio waves.
Frequency: Refers to the number of wave cycles that pass a given point per unit time. Frequency and wavelength are inversely related by the speed of light.
Amplitude: This represents the height of the wave peaks, corresponding to the intensity of the radiation.
Speed: All electromagnetic waves travel at the speed of light in a vacuum, which is approximately 299,792,458 meters per second (c).
These properties are essential for understanding how electromagnetic waves interact with matter and how they are utilized in various applications.
Whats the answer to this question show in the picture 2 questions
Answer: i think it would be watts
A(n)
reverses the flow of current through an electric motor.
Answer:
Commutator reverses the flow of current through an electric motor
Explanation:
Answer:
Commutator is a ring which reverse the direction of current in AC circuit so that the coil connected to it will continuous to move in the same direction.
Explanation:
In motors there exist a coil which is rotated due to torque of magnetic field when current flow through it. Since AC current is used to run the motor so we know that AC current changes its direction after half cycle.
So here commutator plays an important role to reverse the direction of current after every half cycle so that the current goes in same direction always into the coil.
This will produce a constant direction torque on the coil so that it will rotate in same sense always.
So commutator role is to provide same direction current to the coil by reversing its direction after every half cycle
HELP ASAP! GIVING BRAINLIEST
When a pendulum hits a metal lid or pan, what forms of energy can you identify?
Kinetic energy
When the pendulum hit the metal lid or pan it shakes
A. An open parallel circuit
B. An open series circuit
C. A closed parallel circuit
D. A closed series circuit
Answer: Open Series Circuit
Explanation: In a Series Circuit everything is connected together, but in Parallel Circuit it is not, it's Parallel R1, R2, etc.
The question related to understanding open and closed as well as series and parallel circuits in physics. In series circuits, current will not flow if there's an open connection, while in parallel circuits, it can still flow through other branches. Household electrical systems typically employ both series and parallel circuits for efficiency and functionality.
Explanation:The student's question pertains to the behavior of electrical circuits, specifically the difference between open and closed circuits, as well as series and parallel configurations. An open circuit is one where the path for the electric current is interrupted, preventing current from flowing. This can occur in both series and parallel circuits. Conversely, a closed circuit is one where the path for the current is complete, allowing the current to flow unimpeded. This too can happen in both series and parallel circuits.
In a series circuit, all components are connected end-to-end to form a single path for current flow. If any component is disconnected, creating an open circuit, no current will flow through the circuit. In a parallel circuit, the components are connected alongside each other with their own separate paths for current. If one branch is open, current can still flow in the other branches. Therefore, choice (B), an open series circuit, will not allow the flow of current, but choice (C), a closed parallel circuit, and choice (D), a closed series circuit, will allow current to flow.
Looking at household electrical systems, a combination of series and parallel circuits is often used for efficiency. For example, a house's lighting system may use parallel wiring to ensure that if one light bulb fails, the others continue to operate. Similarly, complex appliances like a washing machine may use both types of circuits to control different components accurately.
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what zone does earth exist in that potentially allows life on our planet
Answer: goldilock's zone
The zone which allows the potential for life on Earth is the circumstellar habitable zone.
Explanation:
The circumstellar habitable zone is the zone in which Earth exists. This zone allows the Earth to have or support life on the planet. The habitable zone signifies the presence of support system which could lead to pursue life and that is the presence of water and oxygen.
The water needs to be in ample liquid form with a well defined atmospheric pressure. The presence of zone is circumstellar that is determined by the position of the planet in the Solar System.
6. The temperature of a mass of tin increases from 24.0 degrees C to 34.0 degrees C when 250 J of thermal energy are added. Calculate the mass of the tin. The theoretical specific heat capacity of tin is 0.228 J/g degrees C.
Answer:
110 g
Explanation:
q = mCΔT
where q is heat, m is mass, C is specific heat capacity, and ΔT is change in temperature.
Given q = 250 J, C = 0.228 J/g/°C, and ΔT = 10.0 °C:
250 J = m (0.228 J/g/°C) (10.0 °C)
m = 110 g
To find the mass of tin, the formula Q = mcΔT is used, with the given specific heat capacity and the change in temperature. The calculation results in a mass of approximately 109.65 grams for the tin when 250 J of thermal energy raises its temperature by 10°C.
To calculate the mass of the tin when 250 J of thermal energy are added, and its temperature increases from 24.0 degrees C to 34.0 degrees C, we use the formula Q = mcΔT, where Q is the heat added, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. Given that the specific heat capacity of tin (c) is 0.228 J/g°C, and the change in temperature (ΔT) is 34.0°C - 24.0°C = 10°C, we can rearrange the formula to solve for the mass (m).
m = Q / (cΔT) = 250 J / (0.228 J/g°C × 10°C) = 250 J / (2.28 J/g) = 109.65 g (rounded to two decimal places).
The mass of the tin is therefore approximately 109.65 grams.
What do MRI and ultrasound have in common as diagnostic imaging techniques? Check all that apply.
low risk for tissue damage
uses radio waves
noninvasive
tomographic imaging
no radiation
Answer:
low risk for tissue damage
uses radio waves
the last three are not correct
:)
Answer:
low risk for tissue damage
no radiations
Explanation:
MRI = magnetic resonance Imaging
Ultrasound
These are two process by which we can find the damaged tissues and and their position. These methods are used in medical science and hence these process must be safe to use.
As we know that all electromagnetic radiations are not good for humans as they are of high energy range so here in order to avoid this all we use the phenomenon of resonance to find out the situation of damaged cells or tissues in the body.
So correct answers are
low risk for tissue damage
no radiation
Ohm's Law Problems
1. If you have a circuit with a 50V battery and a 10 OHMS resistor what is current through the
circuit?
Answer:
The current through the circuit is 5A
Explanation:
Ohm's Law
The intensity of current through a circuit is directly proportional to the voltage or voltage of the same and inversely proportional to the resistance it presents.
[tex]I=\frac{V}{R}[/tex]
Where I is the intensity that is measured in amperes (A), V the voltage that is measured in volts (V); and R the resistance that is measured in ohms (Ω).
With a 50V battery and a 10Ω
[tex]I=\frac{50V}{10ohms}=5A[/tex]
Today, most classification systems place bacteria in the kingdom
a. Monera
b. Plantae
c. Animalia
d. Fungi
Today, most classification systems place bacteria in the kingdom
a. Monera
two appliances a lamp with a resistance of 15 and a curling iron with a resistance of 20 are connected in parallel to a 120v source through a 2 resistor in series how much current passes through the circuit when both appliances are on?
Answer:
11.3 A
Explanation:
First of all, we need to find the equivalent resistance of the two appliances in parallel, which is given by:
[tex]\frac{1}{R_{12}}=\frac{1}{R_1}+\frac{1}{R_2}=\frac{1}{15 \Omega}+\frac{1}{20 \Omega}=0.116 \Omega^{-1}\\R_{12} = 8.6 \Omega[/tex]
Then we know that these two appliances are connected in series to another resistor of
[tex]R_3 = 2 \Omega[/tex]
So the total resistance of the circuit is
[tex]R=R_{12}+R_3 = 8.6\Omega + 2\Omega = 10.6\Omega[/tex]
And since we know the voltage of the source,
V = 120 V
We can now calculate the current in the circuit by using Ohm's law:
[tex]I=\frac{V}{R}=\frac{120 V}{10.6 \Omega}=11.3 A[/tex]
Which is an example of radiation? Check all that apply. Troy’s hand is burned when he touches hot wax. Earth is heated by energy from the Sun. A hot dog is held over a fire and gets warm. Soup is heated in a microwave. Water is boiled in a pot on a stove burner.
Answer:
Earth is heated by energy from the Sun.
Explanation:
This is correct on edge.
Radiation examples: Earth heated by Sun's energy, soup microwaved. Other options involve conduction or convection, not radiation.
Radiation refers to the transfer of heat energy through electromagnetic waves. Based on the given options, the examples of radiation are:
Earth is heated by energy from the Sun.
This is an example of radiation because the Sun emits heat energy in the form of electromagnetic waves, which travel through the vacuum of space and reach Earth, warming it in the process.
Soup is heated in a microwave.
Microwaves use electromagnetic radiation to heat food. Microwaves are a form of electromagnetic waves, and they directly heat the water molecules inside the food, causing it to heat up.
Water is boiled in a pot on a stove burner.
This is also an example of radiation. When the stove burner heats the pot, the pot, in turn, heats the water through the process of conduction, but there is also radiation involved. As the pot gets hot, it emits infrared radiation, which further heats the water.
The other examples mentioned (Troy's hand being burned, hot dog getting warm over a fire) involve conduction and convection, not radiation.
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SOMEONE PLS HELP ME ASAP!!!!!!!!!!
Answer:
Greatest-A Middle-B Last-C
The largest source of available freshwater on Earth is _____.
lakes
rivers
aquifers
ice caps
Answer:
The correct answer is ice caps.
Explanation:
Ice caps are the largest source of available freshwater on Earth; especially in Antarctica.
Answer:
ice caps is the correct answer.
Explanation:
The largest source of available freshwater on Earth is ice caps.
Freshwater is a naturally occurring water and concentration of the dissolved salts is low.
Fresh water carries water in ice caps as the largest sources and water in glaciers, ponds, lakes, streams, rivers, ice sheets.
Antarctica contains 90% of the fresh water on the Earth's surface but it is iced in the form of the ice caps.
What do radio waves and microwaves have in common?
A) Both have higher frequencies than visible light
B) Both are located next to visible light on the spectrum.
C) Both are located to the right of visible light on the spectrum
D) both have shorter wavelengths than visible light
Answer: C) Both are located to the right of visible light on the spectrum
Explanation:
BECAUSE....
Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They travel with the speed of light.
Both radio and microwaves are electromagnetic waves which are adjacent to each other in electromagnetic spectrum towards lower frequency and higher wavelength.
The relationship between wavelength and frequency of the wave follows the equation:
[tex]\nu=\frac{c}{\lambda}[/tex]
where,
v = frequency of the wave
c = speed of light
[tex]{\lambda}[/tex]= wavelength of the wave
* Hopefully this helps: ) Mark me the brainliest:)!!
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Answer:
C.) Both are located to the right of visible light on the spectrum
↓↓↓
Explanation:
Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They travel with the speed of light.
Both radio and microwaves are electromagnetic waves which are adjacent to each other in electromagnetic spectrum towards lower frequency and higher wavelength.
The relationship between wavelength and frequency of the wave follows the equation:
where,
v = frequency of the wave
c = speed of light
= wavelength of the wave ↑↑↑
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Hope I helped!!! ∞
~Nuha
<3
PLEASE HELP!!! Find the mass
Recoil = Cannon Ball / cannon x speed of cannon ball.
7.42 = 32.5/ cannon x 388
7.42 = 32.5 x 388 / cannon
7.42 = 12,610 /cannon
7.42 x cannon = 12610
Cannon = 12610/7.42
Cannon = 1699.46 kg. ( Round answer as needed)
Newton’s second law of motion addresses the relationship between what two variables that influence the force on a body?
Newton’s Second Law concerns the generation of force based on an object’s mass and acceleration, as described by the equation F=ma.
Hope this helps!
The two variables which influences the body force addressed in “Newton’s second law of motion” s mass and acceleration.
Explanation:
The “Newton’s second law of motion” states that rate of change of momentum is directly in proportional to force applied on body.
[tex]\begin{array}{l}{F \propto \frac{d p}{d t}} \\ {F=m \cdot \frac{d v}{d t}} \\ {F=m \cdot a} \\ {\text { Force }=\text {Mass} \times \text {Acceleration}}\end{array}[/tex]
This is how the Second law of motion is derived in formula by the Newton which establishes the relationship between the two variables which influences the force of the body.
The illustration depicts the formation of an ionic chemical bond between sodium and chlorine atoms. The result of this bonding is a chemical compound that is stable because the A) transferred electron provides chlorine with a full outer energy level. B) shared electron provides both elements with a full outer energy level. C) shared electron provides provides sodium with a full outer energy level. D) transferred electron provides both elements with a full outer energy level.
Answer:
D) transferred electron provides both elements with a full outer energy level.
Explanation:
Ionic or Electrovalent bonds are interatomic bonds that are formed as result of transfer of electrons between two atoms. The more electronegative atom would attract the electron to itself.
Na, sodium has an electronic configuration of 2,8,1 with a Valence electron.
Cl, chlorine is an halogen with an electronic configuration of 2,8,7.
When atoms combines, the goal is to form an octet configuration to mimic those of noble gases.
If Na, loses one electron, it would have a configuration of 2,8 which looks like a Neon atom. This configuration is stable for Na.
If the electron lost is gained by Cl, the configuration becomes 2,8,8 and resembles an Argon atom.
We can see that by the loss and gain of electrons between Na and Cl the atoms attain a stable octet configuration.
The atom Cl has more affinity for the electron. This would leave a net negative charge on its ion.
The electropositive and metallic Na would donate the electron. Its atom would then show a perfect octet of Ne, Neon. This leave a net positive charge on its ion.
Therefore, the bond type between Na and Cl is an Electrovalent bond.
What type of reaction feels cold to the touch?
Answer:
Explanation:
An endothermic reaction absorbs heat, so it will be cold to touch.
When it will be cold to touch, an endothermic reaction will be present.
What is endothermic reaction?The endothermic reaction is the reaction which absorbs heat and reduces the temperature.
When we are feeling cold to touch any object, that object has undergone the reaction like endothermic reaction.
For example: In refrigerator, the endothermic reaction will let each food item to make cold.
Thus, endothermic reaction feels cold to the touch.
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Which force changes the lithosphere by building up the surface?
volcanic eruptions
weathering
glacial erosion
rockslides
Answer:
volcanic eruptions
Explanation:
The volcanic eruptions are the ones that manage to cause changes to the lithosphere by building up new material on the surface. Through the volcanic eruptions we have release of pyroclastic material on the surface, and more importantly and in much higher amount lava flows. The lava flows quickly cool off on the surface on the Earth, and as they do they pile up new layers of igneous rocks, thus new crust on the surface of the Earth, causing changes on the lithosphere and shaping it for the foreseeable future.
Answer:
A. volcanic eruptions
Explanation:
a magnet has a 20 cm magnetic field if a piece of metal is 18 cm from the magnet will it be attracted or not
Yes, a metal piece of 18cm away can be attracted by a magnet that has 20cm of magnetic field.
The magnet is having a magnetic field of 20cm. And the Metal piece is 18cm far from the magnet. Usually, magnetic fields decrease in strength as you move farther away from the magnet. The strength of the attraction will depend on various factors, including the strength of the magnet, the properties of the metal, and the orientation of the magnet
However, since the metal is within the 20 cm range of the magnet's magnetic field, it experiences some level of attraction.
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Final answer:
A piece of metal 18 cm away from a magnet, which has a 20 cm magnetic field, will be attracted to the magnet because it falls within the magnet's magnetic field range, where magnetic forces are strong enough to attract ferromagnetic materials.
Explanation:
If a magnet has a 20 cm magnetic field and a piece of metal is 18 cm from the magnet, the piece of metal will indeed be attracted to the magnet. This is because the piece of metal falls within the magnet’s magnetic field range. The magnetic field is the region around a magnet where magnetic forces are exerted on ferromagnetic materials like iron, nickel, and cobalt. Since the piece of metal is closer than the full extent of the magnetic field (20 cm), it falls within the sphere of influence where it can be attracted to the magnet.
Magnetic fields are invisible but can be visualized through the use of iron filings or other methods. They illustrate how magnetic forces decrease with distance. However, within its range, a magnet can exert a force sufficient to attract compatible materials. Hence, a piece of metal located 18 cm from a magnet, within the 20 cm range of its magnetic field, will be subject to this magnetic force and drawn towards the magnet.
What is the weight of a basketball with a mass of 0.5 kg
W = 4.9N. The weight of a basketball with a mass of 0.5Kg is 4.9N.
The weight of an object is the force of gravity on the object and can be defined as the product of the mass by the acceleration of gravity, w = mg.
W = (0.5Kg)(9.8 m/s²) = 4.9N
The weight of the basketball is calculated by multiplying the mass of the ball by the acceleration due to gravity. The gravitational potential energy is calculated using the height of the ball above the ground when the player is about to shoot.
Explanation:The weight of a basketball with a mass of 0.5 kg can be found by using the formula for weight (W = mg), where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s2 on Earth). To calculate the gravitational potential energy (GPE) of the netball when the player is about to shoot, the formula for potential energy (GPE = mgh) is used, where h is the height of the ball above the ground. The ball's mass is given as 0.5 kg, and from the provided information, the total height (h) when she is about to shoot is the sum of her height and the distance the ball is held above her head (1.7 m + 0.5 m), which totals to 2.2 m. Therefore, the gravitational potential energy at that moment is GPE = 0.5 kg × 9.81 m/s2 × 2.2 m.
Which circuit-A or B-represents a series circuit? Explain your answer.
Circuit-A is a series circuit. There's only one road that electrons can take to get from one battery terminal to the other one. There's no point in the circuit where an electron has to decide which path to take.
Circuit-B is a parallel circuit. At each of the two 'dimples' across the top, an electron has a choice: It can turn right and go through a bulb, OR keep going straight on to the NEXT bulb.
Circuit-C is a series circuit. There's only one road that electrons can take to get from one battery terminal to the other one. There's no point in the circuit where an electron has to decide which path to take.
Circuit-D is called a "series-parallel circuit", because it has characteristics of both kinds. Devices #2 and #3 are in parallel, but Device #1 is in series with them.
Circuit-E is a parallel circuit. There are two places across the top where an electron has a choice: It can decide to take a right turn and go through the bulb OR keep going straight on to the next bulb.
What is the efficiency of an engine that does 20 J of work and exhausts 80 J
of heat while taking in 100 J of heat? Use e=
Wtotal/ Qin
A. 80%
B. 10%
C. 20%
D. 25%
(PLEASE HELP NEED ANSWER ASAP)
Efficiency =
(energy coming out that does what you want)
divided by
(total energy you put in).
= = = = = = = = = =
Efficiency = (20 J) / (100 J)
Efficiency = 20/100
Efficiency = 0.20
Efficiency = 20% (C)
Engine's efficiency is the ratio of the work done by the engine and heat absorbed by it. The efficiency of the given engine is 20%.
Engine efficiency:[tex]E = \dfrac {W}{q}\times 100[/tex]
Where,
[tex]E[/tex]- efficiency
[tex]W[/tex] = work done by engine = 20J
[tex]q[/tex] - energy absorbed by engine = 100 J
Put the values in the formula,
[tex]E = \dfrac {20}{100}\times 100\\\\E = 20\%[/tex]
Therefore, the efficiency of the given engine is 20%.
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How is an image produced by a plane mirror different than an image produced by a convex mirror?
A It is smaller than the object.
B It is the same size as the object.
C It is inverted
D It is upright.
Answer:
it is the same size as the object ( B )
Explanation:
An image formed/produced by a plane mirror is different than an image produced by a a convex mirror because image produced by a plane mirror appears the same size as the object while the image produced by a convex mirror does not appear is smaller than the object.
images produced by a convex mirror is usually smaller than the original object, they are upright and they are virtual. they also seem to appear behind the convex mirror. while plane mirror produce images of same size as the object.
How are uniform circular motion maps the same as linear motion maps? Check all that apply.
Time is represented by dots at 1-second intervals.
Start position is represented by an x.
Velocity vectors change length as the object’s speed changes.
Velocity vectors change direction as the object’s direction changes.
Acceleration vectors always point in the same direction.
Answer:
Time is represented by dots at 1-second intervals.
Velocity vectors change direction as the object’s direction changes.
Explanation:
I just did the problem and got it right! :)
The acceleration of circular path is continuous and the direction of the acceleration is inward.
Time is represented by dots at one second intervals. Velocity vectors change direction with change of the object’s direction.Circular motion:
It is the motion of an object in the circular path at constant velocity.
Velocity if the circular path is constant and the direction of velocity is tangent to the object' motion.
The acceleration of circular path is continuous and the direction of the acceleration is inward.
Therefore, for uniform circular motion maps, time is represented as the dots of one second intervals.
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How does energy get into the apple in the first place?
A. The apple absorbs energy from the soil while it is on the tree.
B. The apple absorbs energy from the Sun when it is in sunlight.
C. The apple tree stores energy from the Sun in the apple as sugar.
D. The apple tree stores energy from the soil in the apple as sugar.
Energy enters an apple through photosynthesis, where the apple tree captures solar energy and converts it into chemical energy, storing it as sugar within the apple.
Explanation:The energy gets into the apple primarily through a process called photosynthesis. This process is essential for plants, allowing them to capture solar energy from the sun and convert it into chemical energy, which is stored in the form of sugars like glucose. Thus, the correct answer is: C. The apple tree stores energy from the Sun in the apple as sugar.
Through photosynthesis, plants absorb solar energy and use it to transform carbon dioxide and water into glucose, which is a simple sugar, and oxygen. The energy from the sun is stored in the chemical bonds of the glucose molecules. Later, this energy can be accessed by organisms that consume the plants, including humans when they eat plant products like apples.
Final answer:
Energy enters the apple through the process of photosynthesis, where the apple tree captures solar energy and stores it as sugar in its fruits, such as apples. So the correct option is C.
Explanation:
Energy gets into the apple primarily through the process of photosynthesis. The apple tree uses solar energy from the sun to convert carbon dioxide and water into glucose and oxygen. This chemical reaction captures the radiant energy in sunlight and converts it into stored chemical energy in the form of sugars, such as glucose, which accumulates in the fruits of the plant, including apples. Therefore, the correct answer to how energy gets into the apple in the first place is:
C. The apple tree stores energy from the Sun in the apple as sugar.A frog leaping upward off his lily pad instead of continuing on in a straight line . Which law is it ?
Answer:
I think it's Law of Motion.
Explanation:
Hope my answer has helped you!
I believe it is the Law of motion. The frog leaping upward off his lily pad is law of motion