Sodium is a metal and chlorine is a gas. Is sodium chloride (table salt) is there a gas or a metal like the elements it's made of?
A. Yes
B. No, it has completely different properties
Answers
Answer:
B. No, it has completely different properties
Explanation:
Sodium Chloride itself is not an element, but an ionic compound composed of two different elements.
Related Questions
if the rock takes 0.34 s to cross the 2.2- m -high glass door, from what height above the top of the door was it dropped? express your answer to two significant figures and include the appropriate units.
Answers
The rock was dropped from a height of 2.2 m above the top of the door.
What is rock?Rock is a natural and solid material made up of minerals and other substances. It is typically found in mountainous areas, deserts, and other areas where the Earth's crust is exposed. It is composed of different minerals which give it its hardness and durability. Rock is used in numerous construction projects and other applications. It provides a strong foundation for structures and is used in construction, landscaping, and even in art.
The equation used to solve this problem is s = vt, where s is the distance, v is the velocity, and t is the time.
The velocity of the rock is found by rearranging the equation to v = s/t, so v = 2.2 m / 0.34 s = 6.47 m/s.
The initial height of the rock is found by rearranging the equation to s = vt to s = 6.47 m/s * 0.34 s = 2.2 m.
Therefore, the rock was dropped from a height of 2.2 m above the top of the door. Expressed to two significant figures, this is 2.2 m.
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An engineer is designing a small toy car that will be launched from rest. The engineer wants to maximize the kinetic energy of the car when it is launched by a compressed spring. He can only make one adjustment to the initial conditions of the car. Which of the following modifications to the car design would have the greatest effect on increasing the kinetic energy of the car?
A. Decrease the mass of the car slightly.
B. Increase the mass of the car slightly.
C. Decrease the launch speed of the car slightly.
D. Increase the weight of the car slightly.
Answers
The modifications to the car design that would have the greatest effect on increasing the kinetic energy of the car is to increase the mass of the car slightly (option B).
What is kinetic energy?Kinetic energy is the energy possessed by an object because of its motion. The kinetic energy equal (nonrelativistically) to one half the mass of the body times the square of its speed.
According to this question, an engineer is designing a small toy car that will be launched from rest. The engineer wants to maximize the kinetic energy of the car when it is launched by a compressed spring.
However, he can only make one adjustment to the initial conditions of the car. Considering the fact that the mass of an object is directly proportional to the kinetic energy.
This suggests that the modifications to the car design that would have the greatest effect on increasing the kinetic energy of the car is to increase the mass of the car slightly.
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match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. use each word only once.view available hint(s)for part aresethelp1. our entire solar system orbits around the center of the blankabout once every 230 million years.target 1 of 62. the milky way and andromeda galaxies are among a few dozen galaxies that make up our blank.target 2 of 63. the sun appears to rise and set in our sky because earth blankonce each day.target 3 of 64. you are one year older each time earth blankabout the sun.target 4 of 65. on average, galaxies are getting farther apart with time, which is why we say our blankis expanding.target 5 of 66. our blankis moving toward the star vega at about 70,000 km/hr.
Answers
Galaxy, Local Group, rotates, orbit, universe, Solar System, expanding, Vega, 70,000 km/hr.
Match words to astronomical concepts ?our entire solar system orbits around the center of the galaxy about once every 230 million years.the milky way and andromeda galaxies are among a few dozen galaxies that make up our local group.the sun appears to rise and set in our sky because earth rotates on its axis once each day.you are one year older each time earth completes one orbit about the sun.on average, galaxies are getting farther apart with time, which is why we say our universe is expanding.our solar system is moving toward the star Vega at about 70,000 km/hr.The solar system is a group of planets, moons, and other objects that orbit around a star, which is the center of the solar system. The solar system is located within the Milky Way galaxy, and it takes about 230 million years for the solar system to complete one orbit around the center of the galaxy.
The Milky Way and Andromeda galaxies are two of the largest galaxies in the Local Group, which is a small cluster of about 30 galaxies that are gravitationally bound to each other.
The rotation of Earth on its axis is what causes day and night, and it also gives the impression that the Sun is rising and setting.
One year is defined as the time it takes for Earth to complete one orbit around the Sun. This takes approximately 365.25 days.
The Universe is everything that exists, including all matter, energy, and space. The observation that galaxies are moving away from each other led to the conclusion that the Universe is expanding.
The Solar System is a small part of the Milky Way galaxy and is moving through space at a speed of about 70,000 km/hr towards the star Vega.
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newtons _ law of motion states that every action has an equal and opposite reaction
Answers
Answer:
3rd
Explanation:
3rd
A 200-kg box is placed on a ramp. As one end of the ramp is raised, the box begins to move downward just as the angle of inclination reaches 18.0°. What is the coefficient of static friction between box and ramp?A. 0.42B. 0.32C. 3.1D. 0.27E. 62
Answers
The coefficient of static friction between the box and the ramp is approximately 0.32, which corresponds to option B.
To find the coefficient of static friction between the 200-kg box and the ramp when the angle of inclination reaches 18.0°, we can follow these steps:
1. Calculate the gravitational force acting on the box: Fg = m * g, where m is the mass of the box (200 kg) and g is the acceleration due to gravity (9.81 m/s²).
Fg = 200 kg * 9.81 m/s² = 1962 N.
2. Calculate the force acting parallel (Fp) and perpendicular (Fn) to the ramp using trigonometry:
Fp = Fg * sin(θ) and Fn = Fg * cos(θ), where θ is the angle of inclination (18.0°).
Fp = 1962 N * sin(18.0°) ≈ 607.87 N
Fn = 1962 N * cos(18.0°) ≈ 1860.52 N
3. Since the box begins to move downward, the force acting parallel to the ramp (Fp) equals the maximum static friction force (Fs_max). Therefore, we can use the equation:
Fs_max = μs * Fn, where μs is the coefficient of static friction.
4. Rearrange the equation to solve for the coefficient of static friction (μs):
μs = Fs_max / Fn
5. Substitute the values of Fs_max and Fn into the equation:
μs = 607.87 N / 1860.52 N ≈ 0.326
The coefficient of static friction between the box and the ramp is approximately 0.32, which corresponds to option B.
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this is a continuation of the previous question. assume that capacitor c2 is chosen as 200 nf. what is the maximum value of capacitance c1( in nf)
Answers
The maximum value of capacitance C1, when capacitor C2 is chosen as 200 nF, is not constrained or limited, and it can be any value greater than or equal to zero in nanofarads (nF).
To determine the maximum value of capacitance (C1) when capacitor C2 is chosen as 200 nF, we need to consider the total equivalent capacitance in the circuit.
The given circuit diagram is not provided in the question, so I'll provide a general approach based on the assumption that capacitors C1 and C2 are connected in parallel.
When capacitors are connected in parallel, the total equivalent capacitance (C_eq) is calculated by summing the individual capacitance values:
C_eq = C1 + C2
Since C2 is given as 200 nF, we can express the equation as:
C_eq = C1 + 200 nF
However, the maximum value of C1 is not specified in the question. If we assume that there are no other constraints or limitations, we can simply state that the maximum value of C1 can be any value greater than or equal to zero.
Therefore, the maximum value of capacitance C1, when capacitor C2 is chosen as 200 nF, is not constrained or limited, and it can be any value greater than or equal to zero in nanofarads (nF).
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A steam power plant operates between the pressure limit of 3.0 Mpa for the boiler and 75 kPa for the condenser. The plant operates in an ideal Rankine cycle with reheater with superheated vapor enters the high pressure turbine at 3 Mpa and 300 oC, and leaves at 1 MPa. Steam is then reheated at constant pressure to 300 oC before it is expanded to 75 kPa in a low pressure turbine. Determine:
a. the moisture content at the inlet of the condanger.
b. the met works per unit mare of steam tomane In Site.
c. the heat transter to the steam in the boter in lal per ke of steam.
d. the thermal efficiency
e. the heat transfer to cooling water passing through the condenser, in kJ per kg of steam flowing.
Answers
The dryness fraction is 0.96. Using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively. The value of q is found to be 1438.3 kJ/kg.
a) 0.2, b) 2687 kJ/kg, c) 0.16 kJ/kg.K, d) 32%, e) 2549.52 kJ/kgPart (a): The steam is superheated at 300°C and 3 MPa, using steam tables it can be seen that the dryness fraction is 0.96.Part (b): This can be calculated using the formula shown below. The net work done by the turbine is given as follows: Net work = m (h1 - h2) + m (h3 - h4) Where m is the mass of the steam entering the turbine and h1, h2, h3, and h4 are the enthalpies at the different points in the cycle.h1 is given as 3478 kJ/kg, and using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively.
Substituting the values in the formula gives the answer as 2687 kJ/kg.Part (c): Heat transfer per unit mass of steam to the boiler can be calculated using the formula shown below:q = h1 - h4 The value of q is found to be 1438.3 kJ/kg. Part (d): The thermal efficiency of the cycle can be calculated using the formula shown below: Efficiency = Net work output/ Heat inputHeat input can be calculated as follows: Heat input = m (h1 - h4) + m (h3 - h2) The value of heat input is calculated to be 4485.4 kJ/kg Substituting the values in the formula gives the answer as 32%.Part (e): The heat transfer to cooling water passing through the condenser is given as follows:q = m (h4 - h5)Where h4 is 1039.2 kJ/kg and h5 is 48.72 kJ/kg. The value of q is calculated to be 2549.52 kJ/kg.
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if the resulting potential difference between the two conductors is 420 v, what is the capacitance, in nanofarads, of the cable?
Answers
The the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.
The capacitance of a cable is 125 nF when the resulting potential difference between the two conductors is 60 V. If the resulting potential difference between the two conductors is 420 V, what is the capacitance, in nanofarads, of the cable
Given:
Capacitance, C = 125 nF
Initial potential difference, V1 = 60 V
Final potential difference, V2 = 420 V
To find:
The capacitance of the cable is given by the formula:
Capacitance, C = (Charge, Q) / (Potential difference, V)
Or,
Charge, Q = C × V
We know that,
Charge, Q1 = C × V1
Charge, Q2 = C × V2
If we divide Q2 by Q1, then we get:
C × V2 / C × V1
= Q2 / Q1
Or,
C × V2 / C × V1 = (Final charge) / (Initial charge)
From the principle of conservation of charge, we know that:
Charge cannot be created or destroyed; it can only be transferred from one place to another.
Therefore, the initial charge and final charge are the same.
So, we can say that:
Charge, Q2 = Charge, Q1
Hence, C × V2 = C × V1
Or,
C = V1 / V2 × C1
Substituting the values, we get:
C = 60 V / 420 V × 125nF
= 18 nF (approximately)
Therefore, the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.
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Helpppp helppp I will make you a brainlist!!
Answers
Answer:
The answer is that the evil psychic is merciless, see the explanation below:)
Explanation:
When a body is about to receive an impact or collision, two important factors should be taken into consideration; the mass of the body and the velocity with which it moves. The product of mass by velocity is defined as momentum.
Therefore:
\(P=m*v\\\)
where:
P = momentum [kg*m/s]
m = mass [kg]
v = velocity [m/s]
That is, is we are standing in front of the truck:
\(P_{truck}=1000*1\\P_{truck}=1000[kg*m/s]\)
Or in front of the meatball:
\(P_{meatball}=1*1000\\P_{meatball}=1000[kg*m/s]\)
The planet and its moon gravitationally attract each other. Rank the force of attraction between each pair from greatest to leas Greatest 2m-D-m = M-D-2m M=D=M M=2D=2M Least
Answers
The ranking of the force of attraction between each pair, from greatest to least, would be as follows:
M = 2D = 2M: In this case, the masses of the planet (M) and the moon (D) are equal, resulting in an equal and opposite gravitational force between them. Since the distances are the same, the forces of attraction between them are equal.
M = D = M: Here, the planet (M) and the moon (D) have equal masses, but the distance between them is different. The force of attraction between them is still significant but may be slightly smaller compared to the first case due to the larger distance.
M-D-2m: In this scenario, the planet (M) and the moon (D) are attracting a smaller mass (2m). The force of attraction between the planet and the moon is stronger than the force of attraction between the moon and the smaller mass due to the larger mass of the planet.
2m-D-m: The least force of attraction occurs between the smaller mass (2m) and the moon (D). Since the mass of the smaller object is significantly smaller than that of the moon, the force of attraction is comparatively weaker.
In summary, the ranking from greatest to least force of attraction is: M = 2D = 2M, M = D = M, M-D-2m, and 2m-D-m.
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What happens to the electricity in a strand of
Christmas lights if they are plugged in and not
working?
Answers
Answer:
Either all the lights are very old and need new ones or the cable is wet.
Explanation:
Which statements are included in the kinetic theory of matter? Select all that apply.
Answers
Answer:
There is empty space between matter's particles.
Matter's particles are in constant random motion or vibration.
Matter is made of small particles.
Explanation:
What is the kinetic energy of a 0.150 kg
object moving at a velocity of 100m/s?
Answers
Answer:
750J
Explanation:
Given parameters:
Mass of the object = 0.15kg
Velocity of the object = 100m/s
Unknown:
Kinetic energy of the body = ?
Solution:
The kinetic energy is the energy due to the motion of a body. It is mathematically expressed as;
K.E = \(\frac{1}{2}\) m v²
m is the mass of the body
v is the velocity
Now insert the parameters and solve;
K.E = \(\frac{1}{2}\) x 0.15 x 100² = 750J
A ground water tank has its height 2m. Calculate the pressure at its bottom when
it is completely filled with water. (g = 9.8 m/s²)
Answers
Answer: The pressure at the bottom : 19600 N/m²
planets will sometimes follow a loop that takes the apparent path of the planet a short distance backward from east to west across the sky relative to the stars. this movement is called motion
Answers
The movement you are describing is called "retrograde motion." It is an apparent backward motion of a planet in the sky, as seen from the perspective of an observer on Earth.
Retrograde motion occurs because the planets in our solar system orbit the Sun at different speeds and distances. From our viewpoint on Earth, we see the planets moving across the sky against the background of stars. However, because of differences in their orbits, there are times when the Earth passes by a planet, causing it to appear to move backwards (retrograde) in the sky for a period of time before resuming its normal eastward motion.
This phenomenon was first recognized by ancient astronomers who observed the motions of the planets and noted their occasional backward movements. Retrograde motion is still studied by modern astronomers as a way to understand the orbits and movements of planets in our solar system.
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at steady-state, what is the frequency of (displacement) of the mass-spring-damper and will this frequency be in phase with the sinusoidal driving force? explain how you arrived at your answer
Answers
The frequency of displacement of a mass-spring-damper system under sinusoidal driving force is equal to the driving force frequency and in phase with it at steady state.
In a mass-spring-damper system driven by a sinusoidal force, the system will reach a steady-state where the amplitude of the displacement oscillations will remain constant. The frequency of this displacement will be equal to the frequency of the driving force.
Whether the frequency of displacement will be in phase with the driving force depends on the damping ratio of the system. If the damping ratio is zero (i.e. the system is undamped), the displacement frequency will be in phase with the driving force. However, if the system is damped, the displacement frequency will lag behind the driving force frequency.
This is because damping causes energy to be dissipated from the system, resulting in a reduction in the amplitude of the displacement oscillations. As a result, the displacement frequency will be slightly lower than the driving force frequency, and the displacement will lag behind the driving force. The amount of lag will depend on the damping ratio of the system.
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--The complete question is, In a mass-spring-damper system, a sinusoidal driving force is applied. At steady-state, what is the frequency of displacement of the system and will this frequency be in phase with the driving force? Provide an explanation for your answer--
Can a body be in equilibrium if it is revolving clockwise under the action of a single force?
Answers
Answer: A rotating body or system can be in equilibrium if its rate of rotation is constant and remains unchanged by the forces acting on it.
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A flight attendant pulls her 70 N flight bag a distance of 318 m along a level airport floor at a constant velocity. The force she exerts is 41 N at an angle of 57° above the horizontal.
Answers
Complete question :
A flight attendant pulls her 70 N flight bag a distance of 318 m along a level airport floor at a constant velocity. The force she exerts is 41 N at an angle of 57° above the horizontal.
(a) Find the work she does on the flight bag.
(b) Find the work done by the force of friction on the flight bag.
(c) Find the coefficient of kinetic friction between the flight bag and the floor.
Answer:
7107 J ; - 7107 J ; 0.55
Explanation:
Given that :
Distance, d = 318m
Applied force = 41 N
θ = 57°
A.) Workdone = Force exerted along direction of motion
Workdone = applied Force * distance * cosθ
Workdone = 41 * 318 * cos57 = 7101.0037
Workdone = 7,101 J
B.) Workdone by force of friction on flight bag:
- 7,101 J (since the body moves at constant velocity)
C.)
Coefficient of kinetic friction (μ) = Frictional force / normal reaction)
μ = F / N
Frictional force, F = Workdone by friction / distance
F = 6200 / 318
F = 19.47N ;
Ff = weight of Flight bag = 70 N
N = Ff - Fsinθ
N = 70 - applied Force sinθ
N = 70 - 41sin57
N = 70 - 34.385493
N = 35.614506
μ = 19.47 / 35.614506
μ = 0.5466873
Mustang Sally just finished restoring her 1965 Ford Mustang car. To save money, she did not get a new battery. When she tries to start the car, she discovers that the battery is dead (an insufficient or zero voltage difference across the battery terminals) and so she will need a jump start. Here is how she accomplishes the jump start:
Answers
Explanation:
To jump start she needs
1. Jumper cables
2. Power source/jump box/ portable batteries.
The positive end of the jump cable will be connected to terminal of the car battery and the jump box, likewise the negative terminal to complete the circuit for a successful jump start to be accomplished
An object accelerates 2 m/s2 when an unknown force of 20 N is applied to it. What was the mass of the object?
Answers
Answer:
10 kgExplanation:
The mass of an object given only the force acting on it and it's acceleration can be found by using the formula
\(m = \frac{f}{a} \\ \)
f is the force in N
a is the acceleration in m/s²
We have
\(m = \frac{20}{2} = 10 \\ \)
We have the final answer as
10 kgHope this helps you
What is the kinetic energy of a 3 kg ball that is rolling at 3 m/s?
Answers
Answer:
\(\Huge \boxed{\mathrm{13.5 \ Joules}}\)
Explanation:
\(\sf Kinetic \ energy \ (J)=\frac{1}{2} \cdot mass \ (kg) \cdot (velocity \ (m/s)) ^2\)
\(\mathrm{KE=\frac{1}{2} mv^2}\)
The mass of the ball is 3 kg.
The velocity of the ball rolling is 3 m/s.
\(\mathrm{KE=\frac{1}{2} \cdot 3 \cdot 3^2}\)
Evaluating and solving for kinetic energy.
\(\mathrm{KE=\frac{1}{2} \cdot 3 \cdot 9}\)
\(\mathrm{KE=\frac{1}{2} \cdot 27}\)
\(\mathrm{KE} =13.5\)
The kinetic energy of the ball is 13.5 Joules.
Answer:
Kinetic energy =1/2mv^2.
1/2×3×3^2.
1/2×27=13.5 or 13 whole number 1/2.
the aircraft carrier uss george washington has mass 1.01.0 ×108kg×108kg. when its engines are developing their full power of 260,000 hphp, the george washington travels at its top speed of 35 knots ( 65 km/hkm/h).
Answers
In conclusion, the power output of the engines determines the speed at which the USS George Washington can travel. The greater the power, the faster the carrier can move.
The USS George Washington is an aircraft carrier with a mass of 1.01 × 10⁸ kg.
When its engines are operating at full power, generating 260,000 hp, the George Washington can reach a top speed of 35 knots, which is equivalent to 65 km/h.
To understand how the power of the engines relates to the speed of the aircraft carrier, we can use the concept of power.
Power is the rate at which work is done or energy is transferred. In this case, the engines are producing 260,000 hp of power.
The power output of the engines is used to propel the aircraft carrier forward.
As the engines generate more power, the carrier can move faster.
The top speed of 35 knots (65 km/h) is achieved when the engines are producing their maximum power.
In conclusion, the power output of the engines determines the speed at which the USS George Washington can travel. The greater the power, the faster the carrier can move.
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What is the kinetic energy of an a 7.1 kg sled with a velocity of 5.7 m/s?
Answers
Answer:
115.3395 j
Explanation:
K= 1/2mv²= (7.1/2)*5.7² = 115.3395 j
Answer:
115.34 J
General Formulas and Concepts:
Energy
Kinetic Energy Formula: \(\displaystyle KE = \frac{1}{2}mv^2\)
m is mass (in kg)v is velocity (in m/s)Explanation:
Step 1: Define
Identify variables
[Given] m = 7.1 kg
[Given] v = 5.7 m/s
[Solve] KE
Step 2: Solve for KE
Substitute in variables [Kinetic Energy Formula]: \(\displaystyle KE = \frac{1}{2}(7.1 \ kg)(5.7 \ m/s)^2\)Evaluate exponents: \(\displaystyle KE = \frac{1}{2}(7.1 \ kg)(32.49 \ m^2/s^2)\)Multiply: \(\displaystyle KE = (3.55 \ kg)(32.49 \ m^2/s^2)\)Multiply: \(\displaystyle KE = 115.34 \ J\)Topic: AP Physics 1 - Algebra Based
Unit: Energy
Book: College Physics
Describe what an aye of a storm does and look like?
Answers
Answer:
They are found at the center and are between 20-50km in diameter. ... The coriolis force deflects the wind slightly away from the center, causing the wind to rotate around the center of the hurricane (the eye wall), leaving the exact center (the eye) calm.
Explanation:
I used google!
Hope this helps :D
A car slows down from 65 km/s to 30 km/s in 5 seconds. What is its acceleration?
Answers
Sean, an astronaut stands on the edge of a lunar crater and throws a Frisbee™ horizontally with a velocity of 5.00 m/s. With no atmosphere on the moon the Frisbee ™ will not have any force of lift so it will “fly” like a stone. The floor of the crater is 77.0 m below the astronaut. What horizontal distance will the Frisbee™ travel before hitting the floor of the crater? (The acceleration of gravity on the moon is 1/6th that of the Earth).
Answers
Answer:
48.55mm
Explanation:
What is an element and comepounds
Answers
Answer:
Explanation:
Element: consists of only one kind of atom, can't be broken down into a simple type of matter by either physical or chemical means and can consist as either atoms or molecules
Compound: consists of atoms of two or more different elements bound together, can be broken down into simpler types of matter by chemical means BUT not by physical means, has properties that are different from its component elements and always contain the same ratio of its component atoms.
NASA's Langley Research Center has been experimenting with the use of air bags to soften the landings of crew exploration vehicles (CEV) on land. What stopping time will be required in order to safely stop a 7250 kg CEV moving at 7.65 m/s with an average force of 426000 N (an average force of 6 G's)
Answers
The stopping time will be 0.13 second required in order to safely stop a CEV .
What is speed?Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.
The average force acting on CEV is = 426000 N.
Mass of the CEV is = 7250 kg.
Initial speed of the CEV is = 7.65 m/s
Hence, deceleration of the CEV is = ( 426000 N ÷ 7250 kg) = 58.75 m/s²
Hence, required stopping time = 7.65 m/s ÷ 58.75 m/s² = 0.13 second.
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If you pull a permanent magnet rapidly away from a tank circuit, what is likely to happen in that circuit?.
Answers
Answer:
attract the magnetic ratio engine light of rock level
Which object(s) formed last in our solar system?
Answers
Answer:
The inner planets (C)
Explanation:
I hope this helps and i got this answer right on my test!!!