FILL IN THE BLANK If we add fresh water and salt water to raw iron in the first two test tubes, respectively, then we will observe: ________and if we omit oxygen or water from the iron in the 3rd and 4th test tubes, respectively, then we will observe: _________

The wavelength has not changed because the tension in the wire is proportional to the weight of the hanging object, and the wave speed depends only on the tension and the linear mass density of the string.

To calculate the change in wavelength of the third harmonic caused by replacing the light ball with the heavy one, we can use the equation for the wavelength of a standing wave on a string:

λ = 2L/n

where λ is the wavelength, L is the length of the string, and n is the harmonic number.

For the third harmonic, n = 3, so the original wavelength is:

λ₁ = 2(1.10 m)/3

λ₁ = 0.733 m

To find the tension in the wire with the original ball, we can use the formula:

F = mg + T

where F is the tension in the wire, m is the mass of the ball, g is the acceleration due to gravity, and T is the tension due to the wire itself.

Solving for T, we get:

T = F - mg

T = 110.0 N - (0.110 kg)(9.81 m/s²)

T = 108.82 N

Now that we have the tension, we can use the formula for the wave speed on a string:

v = √(F/μ)

where v is the wave speed, F is the tension, and μ is the linear mass density of the string.

The linear mass density can be found using the formula:

μ = m/LA

where m is the mass of the wire, L is the length of the wire, and A is the cross-sectional area of the wire.

μ = (π/4)(0.001024 m)²(1.10 m)/(0.018 kg/m³)

μ = 1.41×10⁻⁶ kg/m

Now we can find the wave speed:

v₁ = √(108.82 N/1.41×10⁻⁶ kg/m)

v₁ = 296.48 m/s

Using the equation for the wavelength of a standing wave on a string, we can find the new wavelength with the heavier ball:

λ₂ = 2L/n = 2(1.10 m)/3 = 0.733 m

The wavelength has not changed because the tension in the wire is proportional to the weight of the hanging object, and the wave speed depends only on the tension and the linear mass density of the string. Therefore, the change in the weight of the ball does not affect the wave speed or the wavelength.

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Answer:

a) maximum mass of the Mars lander to ensure it can land safely is 200 kg

b) area of the parachute required is 480 m² which is larger than 400 m²

c) area of the parachute should be 12.68 m²

Explanation:

Given the data in the question;

V = 20 m/s

A = 200 m²

drag co-efficient CD = 1.855

g = 3.71 m/s²

density of the atmospheric pressure β = 0.01 kg/m³

a. Calculate the maximum mass of the Mars lander to ensure it can land safely?

Drag force FD = 1/2 × CD × β × A × V²

we substitute

FD = 1/2 × 1.855 × 0.01 kg/m × 200 m² × ( 20 m/s )²

FD = 742 N

we know that;

FD = Fg

Fg = gravity force

Fg = mg

so

FD = mg

m = FD/g

we substitute

m = 742 N / 3.71 m/s²

m = 200 kg

Therefore, the maximum mass of the Mars lander to ensure it can land safely is 200 kg

b. The mission designers consider a larger lander with a mass of 480 kg. Show that the parachute required would be larger than 400 m²;

Given that;

M = 480 kg

Show that the parachute required would be larger than 400 m²

we know that;

FD = Fg = Mg = 480 kg × 3.71 m/s²

FD = 1780.8 N

Now, FD = 1/2 × CD × β × A × V², we solve for A

A = FD / 0.5 × CD × β × V²

we substitute

A = 1780.8  / 0.5 × 1.855 × 0.1 × (20)²

A = 1780.8 / 3.71

A = 480 m²

Therefore, area of the parachute required 480 m² which is larger than 400 m²

c. To test the lander before launching it to Mars, it is tested on Earth where g = 9.8 m/s^2 and the atmospheric density is 1.0 kg m-3. How big should the parachute be for the terminal speed to be 20 m/s, if the mass of the lander is 480 kg?

Given that;

g = 9.8 m/s²,

β" = 1 kg/m³

v" = 20 m/s

M" = 480 kg

we know that;

FD = Fg = M"g

FD = 480 kg × 9.8 m/s² = 4704 N

from the expression; FD = 1/2 × CD × β × A × V²

A = FD / 0.5 × CD × β" × V"²

we substitute

A = 4704 / 0.5 × 1.855 × 1 × (20)²

A = 4704 / 371

A = 12.68 m²

Therefore area of the parachute should be 12.68 m²

Answer:

initial velocity= 0

time = 14 sec

final velocity= 53 m/s

a= v-u/t

= 53-0/14

= 3.78 m/s²

I hope it's correct

If a race car driver achieved a speed of 53m/s in 14 seconds after taking off from rest from the starting line, the average acceleration of the car would be 3.78 meters / second².

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem a race car driver achieved a speed of 53 meters/seconds in 14 seconds after taking off from rest at the starting line,

The average acceleration of the car can be calculated with the help of the first equation of motion,

v = u +at

53  =0 + a×14

a = 53 / 14

  = 3.78 meters / second²

Thus, the average acceleration of the car would be 3.78 meters / second².

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The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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Explanation:

Total voltage = 9 × 2 = 18v

Resistance = 82 Ω

Ohm's law::

V = IR

18v = 82 Ω × I

18v /82 /Ω = I

18/82 Ampere is the current

Answer:

1. True

2. False

3. True

4. False

Explanation:

a) In this case, length of the copper rod is 3.6 m which is much larger than the distance 4.9 cm to the point at which electric field is to be determined. Therefore, yes, cylindrical symmetry holds.

b) In this case, length of the copper rod is 8.9 cm which is of the same order of magnitudes the distance 4.9 cm to the point at which electric field is to be determined. Therefore, no, cylindrical symmetry does not hold.

c) In this case, length of the copper rod is 3.8 m which is much larger than the distance 4.9 cm to the point at which electric field is to be determined. Therefore, yes, cylindrical symmetry holds.

d) In this case, length of the copper rod is 3.6 m which is of the same order of magnitudes the distance 4.9 cm to the point at which electric field is to be determined. Therefore, no, cylindrical symmetry does not hold.

The small ball loses 2.37% of its kinetic energy during the elastic head-on collision with the stationary bigger ball.

\(\frac{Kf}{Ki} =\) \(1- [\frac{1}{2}][ \frac{M}{m}] [\frac{2mv^{2} }{[M+m]^{2} }\)

M = 12m

Kf/Ki = 1 - (1/2)(12m/m)[(2mv^2)/(13m)^2]

Kf/Ki = 165/169

(1 - Kf/Ki) x 100% = (1 - 165/169) x 100% = 2.37%

So, the small ball loses 2.37% of its kinetic energy during the elastic head-on collision with the stationary bigger ball.

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The theory states that deviance results not only from what people do but also from how others respond to those actions are labeling theory. Hence, the option B is correct.

This theory states that deviance and conformity result not so much from what people do but also from how others respond. It is called labeling theory. Eg: Skipping school, and underage drinking.

It also suggests that any deviance results in how society responds to certain behaviors. It defines the behavior of human beings influenced by other members of society.

It also notes that a person is made to act in a negative way by the manner in which society identifies him. If a person is identified as a criminal then he involves in the criminal activities.

Conflict theory refers to the theory linking deviance to social inequality. Anticipating the consequences of a person's behavior is control theory.

Hence, the correct option is B) labeling theory.

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Answer:

Tension

Explanation:

The capacitance needed in the LC circuit is 1 μF.

The capacitance needed to make the LC circuit is calculated as follows;

capacitive reactance = inductive reactance

Xc = Xl

1/2πfC = 2πfL

2πfC(2πfL) = 1

4π²f²LC = 1

LC = 1/4π²f²

C = 1/(4π²f²L)

where;

Substitute the given parameter and solve for the capacitance as follows;

C = (1)/(4π² x 100² x 2.5)

C = 1.01 x 10⁻⁶ F

C ≈ 1 μF

Thus, the capacitance needed in the LC circuit is 1 μF.

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Answer:

Impact Craters.

Explanation:

An impact crater can be defined as a circular depression that is caused by impact on any planet or asteroids or any other celestial body's surface. When smaller body in galaxy impacts these larger bodies, they form a circular depression on it's surface.

This is a major feature found in solid object such as the Moon, Mercury, etc.

Therefore, the feature that a planet does not require is an impact crater. As other features are important to define a planet. Thus correct option is C.

Answer:

The temperature of this newly discovered planet violates the third law of thermodynamic, there is a mistake in this value.

Explanation:

The third law of the Thermodynamic says:

At zero kelvin all molecular movement stops, which means that the entropy will be zero at this temperature.

So we can say there is no thermodynamic system that has temperature values less than 0 K.

The conclusion of the report will be.

The temperature of this new planet violates the third law of thermodynamic, there is a mistake in this value.

I hope it helps you!

To convert 813 into grams if it is already in grams, then the value remains as 813 grams. If it is in pounds, 813 pounds would be approximately 368,646.696 grams. If it is in kilograms, 813 kilograms would be equal to 813,000 grams.

To convert 813 into grams, we need to know the unit of measurement you're referring to. Grams are typically used to measure the weight of objects, but without additional context, it's difficult to provide an accurate answer.

If you are referring to 813 grams, then the conversion is straightforward, as it is already in grams.

If you are referring to another unit, such as pounds or kilograms, we can convert it to grams:

If you meant 813 pounds, one pound is approximately equal to 453.592 grams. Therefore, 813 pounds would be approximately 368,646.696 grams.

If you meant 813 kilograms, one kilogram is equal to 1,000 grams. Therefore, 813 kilograms would be equal to 813,000 grams.

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Answer:

you will get huge electricity bills ............

Newton's laws allow to find the result for the movement of the basketballl:

Newton's laws establish the relationship between the forces on objects:

Let's apply these principles to the ball's motion diagram.

The two vertical forces are in the opposite direction, one is due to the weight of the body and the other is the attraction of the earth to the support of the ball, they are of equal magnitude, not their action-reaction force and reluctant because it is applied to the same body

       In conclusion we can say that the ball is on the ground.

The two horizontal forces are in the opposite direction, the thrust force is greater than the friction therefore using Newton's second law the ball must be accelerating in the direction of the thrust force.

       In conclusion we can say that the ball is accelerating in the direction of the pushing force.

In conclusion using Newton's laws we can find the result for the motion of the basketball:

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The quantity of heat energy that must be transferred to 2.25 kg of brass to raise its temperature from 20 °C to 240 °C is 195030 J

First, we shall list out the given parameters from the question. This is shown below:

The quantity of heat energy that must be transferred can be obtained as follow:

Q = MCΔT

= 2.25 × 394 × 220

= 195030 J

Thus, we can conclude quantity of heat energy that must be transferred is 195030 J

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Answer:

divide the distance by the time and get average velocity in units of s. the detection to the left

The gravitational field strength at Pluto's surface is 5.827 x 10⁹ N/kg.

The force of gravity between the object and Pluto's surface is 5.827 x 10¹³ N.

The gravitational field strength at Pluto's surface is calculated as follows;

G_E = GM/r²

where;

G_E = (6.67 x 10⁻¹¹ x 1.2 x 10²²) / (1.172 x10)²

G_E = 5.827 x 10⁹ N/kg

The force of gravity between the object and Pluto's surface is calculated as follows;

F = GMm/r²

F = (6.67 x 10⁻¹¹ x 1.2 x 10²² x 100) /(1.172 x 10)²

F = 5.827 x 10¹³ N

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彼が好きな男のような話は妻と関係があったのでそう

Explanation:これが難しい場合はコメントで教えてくださいが何でも

lol okay

from: a random person :)

Answer: Iron

Explanation: Gradpoint

Answer:

D

Explanation:

Sum of the concentrations of each of reactant species is equal to the sum of the concentrations of each of the product species

The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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If the parallel circuit had 23 amps with the same resistance, the voltage will be V = 23 amps * R.

To determine the voltage in a parallel circuit with a given current and resistance, we can use Ohm's Law, which states that the voltage (V) is equal to the current (I) multiplied by the resistance (R).

In this case, if the parallel circuit has a current of 23 amps and the same resistance as before, we can use the same resistance value as before to calculate the voltage.

Ohm's Law equation: V = I * R

Given:

Current, I = 23 amps

Resistance, R (same as before)

Substituting the values into the equation, we have:

V = 23 amps * R

Therefore, The specific value of resistance (R) is not provided in the question, so the voltage (V) cannot be determined without knowing the resistance value. If the resistance value is provided, you can substitute it into the equation to calculate the voltage.

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Answer:

A. Reversibility

Explanation:

Because if you don't progress then you do the opposite, you reverse.

Sorry if my explanation is confusing it made sense in my head i just didn't know how to put it.

hope this help. ;)

Answer:

A. Reversibility

Explanation:

The acceleration due to gravity on asteroid X is approximately 0.40 m/s².

The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. Meter/second² is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.81 meter/second².

Given parameters:

An astronaut weighs 981 Newtons on Earth.

His weighs 40 newtons on asteroid X.

So, The acceleration due to gravity on asteroid X is:

= (40/981) × 9.81 m/s²

= 0.40 m/s².

Hence,  the acceleration due to gravity on asteroid X is approximately 0.40 m/s².

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The magnitude of the force exerted on this object is 1.2 Newton.

Given the following data:

In Science, the impulse that is experienced by an object is always equal to the change in momentum of the object, due to the force acting on an object.

Mathematically, impulse is given by this formula:

\(Impulse = change\;in\;momentum\\\\Force \times time = m \Delta V\)

Substituting the given parameters into the formula, we have:

\(Force \times 10=12\\\\Force =\frac{12}{10}\)

Force = 1.2 Newton.

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Answer:

Local Technology is an IT services company focused on building businesses through leveraging the best technology solutions.

Answer: Convection

Explanation: in its simplest form is the transfer of heat through circulating air and liquids, this works inside of a hot air balloon by heating the inside of the air with a burner located at the bottom of the balloon, this then makes the air inside of the balloon less dense or lighter than the cooler air on the outside, causing the balloon to float upwards.

(a) A 1 000 kg car is pulling a 300 kg trailer, together the car and trailer move forward with an acceleration of 2. 15 m/s² the net force acting on the car (and trailer) is approximately 2,795 Newtons (N).

To determine the net force on the car, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration.

The total mass of the car and trailer combined is the sum of their individual masses: 1,000 kg + 300 kg = 1,300 kg.

The acceleration of the car and trailer system is given as 2.15 m/s².

Using Newton's second law:

Net force = mass × acceleration

Net force = 1,300 kg × 2.15 m/s²

Net force ≈ 2,795 N

Therefore, the net force acting on the car (and trailer) is approximately 2,795 Newtons (N).

This net force is responsible for accelerating the combined mass of the car and trailer in the forward direction. It represents the sum of all external forces acting on the system, such as the force exerted by the car's engine and the tension in the connection between the car and trailer.

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Answer:

b

Explanation:

a looks so silly