The magnitude of the acceleration of the skydiver is 0 m/s² in the direction of the nose-dive.
What is the magnitude of acceleration of the skydiver?The magnitude of the acceleration of the skydiver is calculated by applying the following method.
F(net) = ma
where;
F(net) is the net on the skydiverm is the mass of the skydivera is the acceleration of the skydiverF(net) = F - Fg
where;
Fg is the force of gravityF is upward forceAt the terminal velocity, the downward force of gravity is canceled by the upward force of air resistance, and the net acceleration of the body is zero.
F(net) = 0
a = 0/m
a = 0 m/s²
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A 2-kg mass is attached to a spring whose constant is 18 N/m, and it arrives at the position
of balance. From
t = 0, an external force equal to
f(t)=2sin2t.
Find the resulting equation of motion.
The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).
What is equation of motion?
The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.
To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.
The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.
In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.
Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).
Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).
Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).
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Escriba una oracion empleada de dos adjetivos de significado opuesto unidos por la exprecion y a la ves
Answer:
El castigo de Juan fue justo y a la vez injusto.
Explanation:
Adjetivos opuestos: justo - injusto
La oración significa que el que castigo era merecido, sin embargo, puede ser algo exagerado por lo tanto algo injusto. Describiendo la situación con adjetivos con significado opuesto al mismo tiempo, mediante un conector de simultaneidad que es y a la vez.
How far can you get away from your little brother with the squirt gun filled with paint if you can travel at 3 m/s and you have 0.25 min before he sees you?
Answer:
s = 45 m
Explanation:
The velocity given in the question is uniform. Hence, the formula for the uniform velocity shall be used here. The formula is given as follows:
\(s = vt\)
where,
s = distance traveled away from the brother = ?
v = constant speed = 3 m/s
t = time taken = (0.25 min)(60 s/1 min) = 15 s
Therefore, using these values in the formula we get:
\(s = (3\ m/s)(15\ s)\\\)
s = 45 m
Which is the most common direction of motion in the solar system, both for orbital revolution and axial rotation?.
Answer:
Clockwise
Explanation:
All of the planets rotate the same way around the sun.
a 2.0 kg ball is thrown horizontally with a velocity of 15 m/s against a wall. if the ball rebounds horizontally with a velocity of 13 m/s and the contact time is 0.021 s, what is the force exerted on the ball by the wall?
The force exerted on the ball by the wall when it is thrown against a wall is calculated to be 190.48 N.
We know, F = m a ---(1)
where, F is force
m is mass
a is acceleration
From the equations of motion, we know, v = u + a t ---(2)
Acceleration is mathematically written as, a = (vf - vu)/t ---(3)
Replacing (3) in (1), we get,
F = m × (vf - vu)/t = 2 × (-13 +15)/0.021 = (2 × 2)/0.021 = 190.48 N
Thus, the force exerted on the ball by the wall when it is thrown against a wall is calculated to be 190.48 N.
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An electric iron is connected to the mains power supply of 220 V. When the electric iron is
adjusted at 'minimum heating' it consumes a power of 360 W but at 'maximum heating' it takes a
power of 840 W. Calculate the current and resistance in each case.
Answer:
Given: V = 220V, Pmin = 360W, Pmax = 840W
For minimum heating case:
We know that
Pmin = VI
360 = 220 X I
I = 1.63 amp
R = V/I
R = 220/1.63
R = 134.96ohms
For maximum heating case:
We know that
Pmax = VI
840 = 220 X I
I = 3.81 amp
R = V/I
R = 220/3.81
R = 57.74 ohms
DNA is composed of subunits called nucleotides. What are the 3 parts of a nucleotide?
Explanation:
1) Nitrogenous base
2) Pentose sugar
3) One or more phosphate group
Which of the following occurs when the fight-or-flight response is triggered?
Answer:
A or BExplanation:
The autonomic nervous system has two components, the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers.
what is called gratational force
Answer:
Gravitational force can be seen as the pull that the earth has on an piece of matter. Everything on earth has a force acting on it which is gravity. It tries to pull two object closer to each other but never apart. The numerical value for gravitational force is 9.8 m/s^2 for free falling objects
Why don't animals that use electricity electrocute themselves.
Answer:
Electric eels DO endanger themselves by generating electricity. They frequently shock themselves.
That is one animal but I hope it helps!!!
a 2-kilogram piece of clay moving at 3 m/sec strikes and sticks to a second 2-kilogram piece of clay moving at 1 m/sec in the opposite direction. calculate the speed of the combined piece of clay.
The combined speed of the pieces of clay of mass 2 kg respectively is 1 m/s.
What is speed?Speed is the ratio of distance to time.
To calculate the combined speed of the piece of clay, we use the formula below.
Formula:
V = (mu+m'u')/(m+m').................. Equation 1Where:
V = Combined speed of the claym, m' = Mass of the first and second clayu, u' = Initial speed of the first and second clayFrom the question,
Given:
m = 2 kgm' = 2 kgu = 3 m/su' = -1 m/s (Opposite direction)Substitute these values into equation 1
V = [(2×3)+(-1×2)]/(2+2)V = (6-2)/4V = 4/4V = 1 m/sHence, the combined speed of the piece of clay is 1 m/s.
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Use equation 11.27 to calculate the wavelength of the electronic transition in polyenes for n = 6, 8, and 10. comment on the variation of a with l, the length of the molecule.
Equation 11.27 can be used to calculate the wavelength of electronic transitions in polyenes for different values of n, such as n = 6, 8, and 10. The variation of a with l, the length of the molecule, can be observed and commented upon.
Equation 11.27, which is not provided here, likely relates to the mathematical expression used to calculate the wavelength of electronic transitions in polyenes. By applying this equation for different values of n (such as n = 6, 8, and 10), we can determine the corresponding wavelengths for the electronic transitions in polyenes with varying chain lengths.
By analyzing the results obtained from the calculations, we can comment on the variation of a with l, where a represents the wavelength and l represents the length of the molecule. This analysis will help us understand the relationship between the length of the polyene molecule and the wavelength of its electronic transitions. We may observe a pattern or trend indicating how the wavelength changes as the molecule lengthens.
Further analysis and interpretation of the calculated wavelengths and their relationship to the length of the molecule could provide insights into the behavior of electronic transitions in polyenes. It may help identify any systematic trends or deviations from expected patterns, leading to a better understanding of the structure and properties of polyene systems.
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if vector A =i+2j-k and vec A cross vec B =3i-j+5k. find vec B
Let B = a i + b j + c k. Then the cross product of A = i + 2j - k with B is
A × B = ( i + 2j - k ) × ( a i + b j + c k )
A × B = a ( i × i ) + 2a ( j × i ) - a ( k × i )
… … … + b ( i × j ) + 2b ( j × j ) - b ( k × j )
… … … + c ( i × k ) + 2c ( j × k ) - c ( k × k )
A × B = 0 - 2a k - a j
… … … + b k + 0 + b i
… … … - c j + 2c i - 0
A × B = (b + 2c) i + (-a - c) j + (b - 2a) k
So we have
3 i - j + 5 k = (b + 2c) i + (c - a) j + (b - 2a) k
which gives us the system of equations,
{ b + 2c = 3
{ -a - c = -1
{ -2a + b = 5
Solve for a, b, and c.
• Eliminate c from the first two equations:
(b + 2c) + 2 (-a - c) = 3 + 2 (-1)
-2a + b = 1
But -2a + b = 5, and 5 ≠ 1, so there is no such vector B that satisfies the cross product!
Why do some people in the music industry still prefer analog music storage? Analog introduces background noise to the original recording. Analog devices record the music in its original form. It takes less time to record the music through analog devices. The equipment is lighter and less bulky for recording analog signals.
The people in the music industry still prefer analog music storage. Because analog devices record the music in its original form.
What is analog device storage?There are advantages to both digital and analog music. Even today, music connoisseurs debate the subject incessantly.
Understanding both recording methods can help you appreciate music more by providing you with a better understanding of playback depth. Analog and digital songs have different effects on playback,
But both can identify the various aspects of a song. In honor of music as a whole, we're diving into both and bringing out the best of each.
Hence people in the music industry still prefer analog music storage. Because analog devices record the music in its original form.
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Answer:
B
Explanation:
if i want to find a sizeable collection of population ii stars in the milky way galaxy, where would be a good place to look? a) near the sun b) in a globular cluster high above the galaxy's disk c) in the orion spur d) on the outer surface of giant molecular clouds
It would be wise to look in a globular cluster perched high above the galaxy's disc for a sizable group of population II stars in the Milky Way galaxy.
Explain about the galaxy?Any system of stars and interstellar material that makes up the universe is referred to as a galaxy. Hundreds of billions of stars can be found in several of these massive assemblages. Galaxies typically cluster together; some of these clusters have a diameter of hundreds of millions of light-years.
Elliptical, spiral, and irregular galaxies are the three main classifications used by astronomers. These galaxies come in a variety of shapes and sizes, from dwarf galaxies with only a few hundred million stars to massive galaxies with more than a trillion stars.
Huge gas clouds that collapse and rotate give rise to galaxies. Stars grow inside of them as they develop. Galaxies can collide and change appearance as a result.
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Please help me I have physics tomorrow and im so confused
Answer:
trust the process
Explanation:
quadratic formula, use synthetic division also use the p-q method for the roots and factoring.
A 1 kg water balloon falls downward and experiences a 4.9 N air resistance as it approaches the ground. What is the acceleration of the water balloon when it experiences this air resistance?
answer each problem with only one note
1. The speed of a bobsled is increasing because it has an acceleration of 2. 4 m/3. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The combined mass of the bobsled and its riders is 270 kg. (a) What is the magnitude of the force propelling the bobsled forward? (b) What is the magnitude of the net force that acts on the bobsled?
(a) The magnitude of the force propelling the bobsled forward is 648 N. (b) The magnitude of the net force acting on the bobsled is 198 N.
Use Newton's second law of motion, which states that force equals mass times acceleration (F = ma). Rearranging the formula, we get F = ma, where F is the force, m is the mass, and a is the acceleration.
So, the force propelling the bobsled forward is,
F = ma = (270 kg)(2.4 m/s^2) = 648 N
The net force acting on the bobsled can be calculated by subtracting the forces resisting the motion from the force propelling the bobsled forward. So, the net force acting is,
Net force = Force propelling forward - Forces resisting motion
Net force = 648 N - 450 N
Net force = 198 N
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Ound on the water urface ha both longitudinal and tranvere characteritic
a] can the ound wave be polarized
Longitudinal waves cannot be polarised, whereas transverse waves may.Water waves are an example of a wave with both longitudinal and transverse motions.
Is it possible for a water wave to include both transverse and longitudinal components? Longitudinal waves cannot be polarized, whereas transverse waves may.Water waves are an example of a wave with both longitudinal and transverse motions.Particles travel in clockwise rings as a wave passes through the waver.As the depth of the water grows, the radius of the circles shrinks.Water ripples on the surface generate transverse waves.Longitudinal waves are discovered deep into the water body as particles are moved parallel to the path of the wave.Longitudinal waves, also known as compression waves, transfer sound through gases, plasma, and liquids.However, it can be transmitted as both longitudinal waves and transverse waves through solids.To learn more about Longitudinal waves refer
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A person pushes on a box with a force of 500N. If the box does not move, what is the force of static friction on the box?
A. 100 N
B. 200 N
C. 500 N
D. Cannot be determined
Answer:
c
Explanation:
A cat chases a mouse across a 1.0 m high
table. The mouse steps out of the way, and
the cat slides off the table and strikes the floor
2.7 m from the edge of the table.
The acceleration of gravity is 9.81 m/s
2
.
What was the cat’s speed when it slid off
the table?
Answer in units of m/s
The speed of the cat when it slid off the table is equal to 6.0 m/s.
What is the equation of motion?The equations of motion have described the motion of an object as a function of time and set up the relationship between the acceleration, velocity, time, and displacement of a moving object.
The equations of motions can be expressed as mentioned below:
\(v = u + at\\S = ut + (1/2)at^2\\v^2-u^2 = 2aS\)
From the 2nd equation of motion, calculate the time taken by the cat to reach the ground:
S = ut + (1/2)gt²
1 = 0 + (1/2)× 9.8×t²
t = 0.45 s
The speed of the cat can be calculated as:
Cat's speed = Distance/time taken
Speed = 2.7/0.45 = 6 m/s
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Highlight the correct answer.
A.) An object with more mass has more/less gravitational force than an object with a smaller mass.
B.) Objects that are closer together have more/less of a gravitational force between them than objects that are further apart.
The correct answer is B. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
In simpler terms, as objects get closer together, the gravitational force between them increases.
When the distance between two objects decreases, the denominator of the equation (distance squared) becomes smaller, resulting in a larger force. Conversely, when the distance increases, the denominator becomes larger, resulting in a smaller force.
It is important to note that the mass of an object does not directly affect the strength of the gravitational force between two objects. However, a higher mass will lead to a greater gravitational force when compared to a lower mass, but only because the force is being exerted on a more massive object. The mass of an individual object doesn't directly affect the gravitational force it experiences from another object. option B
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Describe a circumstance where you want friction to work against Newton’s First Law.
Answer:
If I was riding my bicycle, and there was no friction to work against Newton's First Law, I'd give a first push, and I would never be able to turn or stop.
Explanation:
4 8 points) Listen Choose the items that help to fully describe RESISTANCE in a parallel circuit 0 1 Is the flow of electricity 2) is provided by the battery 3) Used to slow the current 4) Directly related to voltage 5) AKA Potential difference 6) Inversely proportional to current 7) Inversely proportional to resistance 8) The resistance to the flow of current 9) Add the reciprocals to get the total resistance 10) Directly related to resistance CD 11) Directly related to current WTO 12 Remains the same everywhere in a SERIES Circuit
Resistance in a parallel circuit is the opposition to the flow of current. It is directly related to the total resistance of the circuit, which can be calculated by adding the reciprocals of each individual resistance. Resistance is inversely proportional to both current and voltage, meaning that as current or voltage increases, resistance decreases. It is also known as potential difference and can be used to slow down the current in a circuit. However, in a series circuit, resistance remains the same everywhere. The flow of electricity in a parallel circuit is provided by the battery, and resistance is directly related to the resistance of the individual components in the circuit. Current is directly related to resistance, while resistance is inversely proportional to itself.
To fully describe RESISTANCE in a parallel circuit, consider the following terms:
3) Used to slow the current - Resistance is the property that opposes or restricts the flow of electric current in a circuit.
8) The resistance to the flow of current - This is another way to describe the function of resistance in a circuit.
9) Add the reciprocals to get the total resistance - In a parallel circuit, to find the total resistance, you add the reciprocals of the individual resistances and then take the reciprocal of the sum. The formula is 1/Rt = 1/R1 + 1/R2 + 1/R3 + ...
Other terms mentioned, such as voltage, current, and potential difference, are related to resistance but do not specifically describe resistance in a parallel circuit.
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A sample of the mineral cinnabar has a mass of 251.1g and a volume
of 31.0 cm3. What is the density of cinnabar?
Answer:
8.1 g/cm³
Explanation:
The following data were obtained from the question:
Mass of cinnabar = 251.1 g
Volume of cinnabar = 31 cm³
Density of cinnabar =?
Density of a substance is simply defined as the mass of the substance per unit volume of the substance. It can be represented mathematically as:
Density = mass / volume
Using the above equation, we can obtain the density of the cinnabar as follow:
Mass of cinnabar = 251.1 g
Volume of cinnabar = 31 cm³
Density of cinnabar =?
Density = mass / volume
Density of cinnabar = 251.1 / 31
Density of cinnabar = 8.1 g/cm³
Thus, the density of the cannabar is 8.1 g/cm³
A batted ball is fair if it hits third base. *
True
O O
False
Answer:
True
Explanation:
true, batted balls that first contact the field between home plate and first or third base are considered fair if they subsequently bounce over or directly contact either base, or otherwise pass either base while in fair territory. that's what the mlb glossary says, at least.
What is the formula of the force??
F = ma
☆...hope this helps...☆
_♡_mashi_♡_
Answer:
F = MA
Force (Newtons) = Mass (Kilograms) x Acceleration (m/s^2)
Brainliest, please :)
Which of the following is the highest ranking taxa into which living organisms are classified in Linnaean taxonomy?
Answer:
Im pretty sure its kingdom
Explanation:
I have a test with the same question and I got it right putting the answer as kingdom.
2) Re-write the equation in terms of 6 \[ \gamma_{d}=\frac{G_{s} \gamma_{w}}{1+e} \]
The equation given as:
\(\(\[ \gamma_{d}\)
=\(\frac{G_{s} \gamma_{w}}{1+e} \]\)\)
needs to be rewritten in terms of 6. We know that e = 2.71 approximately, the equation in terms of 6 is:
\(\(\[\gamma_d = \frac{6G_s\gamma_w}{22.26}\]\)\)
This new equation gives the value of γd in terms of 6.
so we will substitute this value in the equation to get:
\(\[\gamma_d = \frac{G_s\gamma_w}{1+2.71}\]\)
Simplifying the expression by adding the denominator terms and getting a common denominator, we get:
\(\(\[\gamma_d = \frac{G_s\gamma_w}{3.71}\]\)\)
Now, we can divide both sides of the equation by 3.71 to isolate γd on one side and write the equation in terms of 6, as follows:
\(\[\gamma_d\)
\(= \frac{G_s\gamma_w}{3.71} \times \frac{6}{6}\] \[\gamma_d \(\)
\(= \frac{6G_s\gamma_w}{22.26}\]\)\)
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How long will it take to travel 200.000 m [N] traveling 10 m/s [N]?
Answer: here are 1,000m in a km, so 200km is 200,000m
200,000m/10m/s = 20,000s
Explanation:
Answer:
15.9k
Explanation: