Un elevador lleno de personas tiene una masa de 752Kg. La tensión en el cable que sostiene al elevador es de 8950N, hacia arriba, ¿A que razón acelerará el elevador?

Answer:

Explanation:

Momentum conservation:

10,000 x 2 = (10,000 + 30,000) x v

so

v = 0.5 m/s

The speed after collision will be = 0.5m/s

The conservation of momentum states that the amount of momentum remains constant , momentum is neither be created nor be destroyed but only changes through the actin of forces as described by newton's law of motion

since , momentum should be conserved before and after the collision

so , from momentum conservation we can write ,

m1 = mass of moving freight car = 10000kg

v1 = speed of moving freight  car = 2m/s

m2 = mass of stationary freight car  = 30000 kg

v2 = speed of stationary freight car   = 0 (since , at rest )

M = mass of coupled cars after collision

V = velocity  coupled cars  after collision

momentum before collision = momentum after collision

m1*v1 + m2*v2 = MV

10000 * (2) + 30,000 * 0 = (10000 + 30000) V

20000 = 40000V

V = 0.5 m/s

The speed after collision will be = 0.5m/s

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Answer:

\(R _{t} = R _{0}( \alpha t + 1) \\ = 4 \times {10}^{ - 3} (3.9 \times {10}^{ - 3} \times 20 + 1) \\ = 4 \times {10}^{ - 3} (1.078) \\ = 4.312 \times {10}^{ - 3} \: Ω\)

100,000 centimeters or 10⁵ centimeters are in a kilometer.

Any arbitrarily selected and widely used reference standard for length measurement is referred to as a unit of length. The metric system, which is adopted by every nation on earth, is the most widely utilized in modern times.

We know that:

1 kilometer = 1000 meters.

And 1 meter = 100 centimeters.

So, 1 kilometer = 1000 meters

1 kilometer = 1000 × 100 centimeters

1 kilometer = 100,000 centimeters

1 kilometer = 10⁵ centimeters.

Hence, 100,000 centimeters or 10⁵ centimeters are in a kilometer.

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Explanation:

This question is not feasible. There is no way to calculate the energy needed because the question is missing the final temperature

Answer:

Here's ur answer

Explanation:

It is deflected by both electric and magnetic field because it carries negative charge

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Answer: The depth of the ocean is 650 feets at the bottom of the sunlight zone.

The distance travelled by echo sound is given by the formula -

Speed = 2×distance/time

So, calculating the speed of sound from the formula using distance and time

Speed = 2×25/(1/100)

Speed = 50×1000

Speed of sound = 5000 feet/second

Now, calculating the distance or depth of ocean at the bottom of the sunlight zone -

Distance = (speed×time)/2

Distance = (5000×26/100)/2

Distance = 1300/2

Distance = 650 feets

Hence, the depth of ocean is 650 feets.

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Answer:

We can start by using the formula:

distance = speed x time

where distance is twice the depth of the ocean at the bottom of the Sunlight Zone (since the pulse travels down to the seafloor and then back up), speed is the speed of sound in water, and time is the round-trip time of the pulse.

The speed of sound in water is approximately 1,500 meters per second (or 4,921 feet per second).

Converting the round-trip time to seconds, we have:

26 seconds - 1 second = 25 seconds

Substituting the values into the formula:

2 x depth = 4,921 feet/second x 25 seconds

2 x depth = 123,025 feet

depth = 61,512.5 feet

Therefore, the ocean at the bottom of the Sunlight Zone is about 61,512.5 feet deep.

Answer:

Measurements play an important role in daily life because they are useful to do basic tasks, such as take a child's temperature with a thermometer, make time estimations, measure out medicine and find weights, areas and volumes of different materials or substance. Measurement is widely used applications of mathematics.

If a third resistor is added in SERIES, what changes happens to the....

When you add a third resistor in series, the total resistance of the circuit increases. This is because the current has to flow through all three resistors, so it has to overcome more resistance. The total voltage across the circuit stays the same, because the voltage of the battery is constant. However, the current decreases, because the same amount of current is now flowing through a larger resistance.

The voltage across each resistor also decreases, because the total voltage is divided among the three resistors. The current through each resistor also decreases, because the same current is now flowing through a larger resistance.

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The time required for a girl to rotate the sphere one time, starting from rest, is 19.256 s.

A measure of an object's resistance to changes in its rotating motion, the moment of inertia, is used in physics. It measures the amount of mass disposed about a rotational axis. The equivalent of mass in linear motion is the moment of inertia in rotational motion.

The inertia is given by:

I = (2/5)m×r²

I = (2/5) × 8200 kg × (0.9m)²

I = 2657 kg·m²

The torque is given by:

τ = I×α

25 × 0.9 = 2657 × α

α = 0.00846 rad/s²

The angular displacement is:

Θ = ½α×t²

2π rads = ½ × 0.00846 × t²

t =√(4π rads/0.0106rad/s²)

t = 19.256 s

Hence, the time required for a girl to rotate the sphere one time, starting from rest, is 19.256 s.

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a. The free-body diagrams of the 8.0 kg box and the 2.0 kg mass is attached below.

bi) the acceleration of the system is 0.4 m/s^2

bii)  the tension in the string is 0.8 N.

Net force = ma

Net force = T - F_friction

where T is the tension force and F_friction is the frictional force.

Substituting the given values, we have:

T - F_friction = ma

T - 6.0 N = (8.0 kg + 2.0 kg) a (since the tension force acts on both masses)

T - 6.0 N = 10.0 kg a

(ii) To find the tension in the string, we can apply Newton's second law of motion to the 2.0 kg mass:

Net force = ma

where m is the mass of the mass and a is the acceleration of the system. The net force on the mass is the tension force:

Net force = T

Substituting the given values, we get:

T = ma

T = 2.0 kg x a

To solve for T, we need to find the acceleration of the system.

To find both a and T, we can use the equations we derived above and solve them simultaneously:

T - 6.0 N = 10.0 kg a (equation 1)

T = 2.0 kg x a (equation 2)

Substituting equation 2 into equation 1, we get:

2.0 kg x a - 6.0 N = 10.0 kg a

Solving for a, we get:

a = 0.4 m/s^2

Substituting a into equation 2, we get:

T = 2.0 kg x 0.4 m/s^2 = 0.8 N

Therefore, the acceleration of the system is 0.4 m/s^2 and the tension in the string is 0.8 N. of the system is 0.4 m/s^2 and the tension in the string is 0.8 N.

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The graph of the given values in the table is shown below:

In the previous graph, speed is represented by the vertical values (each unit represents 10.0 m/s) and time is represented by horizontal values (each unit represents 1.0s).

As you can notice on the graph, for a time of 5.0s the speed is 25.0m/s (by considering the red lines with show the values on vertical and horizontal axis)

a) It is the error present in the measuring instrument that causes it to register a value even when there is no input or output being measured.

b) An example of when you would have to allow for zero error is when using a measuring instrument like a vernier caliper or micrometer screw gauge.

a) Zero error refers to the deviation or discrepancy in the measurement instrument, where the indication or reading on the instrument is not zero when the quantity being measured is zero. In other words, it is the error present in the measuring instrument that causes it to register a value even when there is no input or output being measured.

Zero error can occur due to various reasons such as manufacturing defects, wear and tear, misalignment, or improper calibration of the instrument. It can be positive or negative, depending on whether the instrument reads higher or lower than the actual value.

b) An example of when you would have to allow for zero error is when using a measuring instrument like a vernier caliper or micrometer screw gauge. These instruments are commonly used to measure the dimensions of objects with high precision.

In a vernier caliper, for instance, zero error can occur when the jaws do not close perfectly when there is no object being measured. If the caliper shows a reading other than zero when the jaws are closed, it indicates the presence of zero error.

To obtain accurate measurements, the zero error needs to be accounted for and compensated. This can be done by adjusting the position of the zero on the scale or by subtracting the zero error value from the measured readings.

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Who has so much time to measure the fμcking seeds?

Explanation:

s/u =t

5000m/240ms-1

20.8 s

Answer:

v = 10t

Explanation:

The velocity of an object after time t is given by the equation
v(t) = u + at

Here u, the initial velocity is 0

a = acceleration = g = 10 m/s²

Therefore at any time,
v(t) =  0 + 10t

v = 10t

After 5 seconds, v = 10 m/s² x 5s  = 50 m/s

The graph of this equation is given

Complete Question

The diagram of with this question is shown on the first uploaded image

Answer:

The value is  \(v = -6.543 \^ i + 9.47 \^ j + 0 \^ k\)

Explanation:

From the question we are told that

   The mass of the rock is  \(m = 0.250 \ kg\)

    The length of the string is  \(L = 0.75 \ m\)

    The angle the string makes horizontal is  \(\theta = 11.9^o\)

     The angle which the projection of the string onto  the xy -plane makes with the positive x-axis is  \(\phi = 34.6^o\)

    The angular velocity of the rock is  \(w = 2.50 rev/s = 2.50 * 2\pi =15.7 \ rad/s\)

Generally the radius of the circle made by the length of the string is mathematically represented as

               \(r = L cos(\theta )\)

=>            \(r = 0.75 cos(11.9 )\)

=>            \(r = 0.734 \ m\)

Generally the resultant tangential velocity is mathematically represented as

      \(v__{R}} = w * r\)

=>  \(v__{R}} = 15.7 *0.734\)

=>  \(v__{R}} = 11.5 \ m/s\)

Generally the tangential velocity along the x-axis is  

      \(v_x = -v__{R}} * sin(\phi)\)

=>   \(v_x =- 11.5 * sin(34.6)\)

=>   \(v_x = -6.543 \ m/s\)

The negative sign show that the velocity is directed toward the negative x-axis

Generally the tangential velocity along the y-axis is  

      \(v_y = v__{R}} * cos(\phi)\)

=>   \(v_y = 11.5 * cos(34.6)\)

=>   \(v_y = 9.47 \ m/s\)

Generally the tangential velocity along the y-axis is  

      \(v_z = v__{R}} * cos(90)\)

=>   \(v_z = 0 \ m/s\)

Generally the tangential velocity at that instant is mathematically represented as

       \(v = -6.543 \^ i + 9.47 \^ j + 0 \^ k\)

Answer:

1) an observer in B 'sees the two simultaneous events

2)observer B sees that the events are not simultaneous

3)  Δt = Δt₀ /√ (1 + v²/c²)

Explanation:

This is an exercise in simultaneity in special relativity. Let us remember that the speed of light is the same in all inertial systems

1) The events are at rest in the reference system S ', so as they advance at the speed of light which is constant, so it takes them the same time to arrive at the observation point B' which is at the point middle of the two events

Consequently an observer in B 'sees the two simultaneous events

2) For an observer B in system S that is fixed on the Earth, see that the event in A and B occur at the same instant, but the event in A must travel a smaller distance and the event in B must travel a greater distance since the system S 'moves with velocity + v. Therefore, since the velocity is constant, the event that travels the shortest distance is seen first.

Consequently observer B sees that the events are not simultaneous

3) let's calculate the times for each event

        Δt = Δt₀ /√ (1 + v²/c²)

where t₀ is the time in the system S' which is at rest for the events

The frequency of sound at the given temperature is 200.58 Hz.

The frequency of sound at the given temperature is calculated as follows;

v = fλ

f = v/λ

where;

f = 343/1.71

f = 200.58 Hz

Thus, the frequency of sound at the given temperature is 200.58 Hz.

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The scientific study of physics focuses on the underlying concepts that underpin the laws of nature. It investigates how matter, energy, space, and time behave and interact. Physics' fundamental goal is to comprehend the underlying laws and forces that create our universe.

Physics has developed theories and rules to explain a wide variety of events, from the motion of celestial bodies to the behaviour of subatomic particles, via meticulous observation, investigation, and mathematical analysis.

These theories offer a framework for comprehending and forecasting the behaviour of physical systems, such as Newton's laws of motion and Einstein's theory of relativity.

From the tiniest particles to the biggest cosmic structures, physics has enhanced our understanding of the world and sparked a host of technological advances.

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Answer:

which on a is the question

Answer:

4th of August is the

Explanation:

5th and then I can help out by getting

Answer:

Explanation:

Ask a question that can be answered by making observations.

Answer: (APE X) Determine whether experimental observations can provide evidence to support a conclusion

Explanation:

Answer:

i think this may help you

Explanation:

In an inelastic collision the total kinetic energy after the collision is not equal to the total ... If there are no net forces at work (collision takes place on a frictionless surface ... Momentum is equal to the product of mass and velocity. ... bodies before the collision is equal to the total kinetic energy of the bodies after the collision.

Since at slightly greater distances your sky is brightened by many beautiful, star-filled structures, some with majestic spiral shapes. The place that you are is option  D) You are in intergalactic space within a rich cluster of thousands of galaxies.

There is virtually little chance that such primitive life might "infect" those planets because of the extremely low density of intergalactic space. Life without any form of star is a whole different - and even more speculative - topic. Processes outside of thermal equilibrium are essential to life.

Interstellar space is the term for the area between stars, whereas intergalactic space refers to the area between galaxies. The enormous empty voids between galaxies are these.

Therefore, an actual distance between galaxies is known as intergalactic space. The universe appears to have a foam-like structure, with groupings and clusters of galaxies lying along filaments that take up about a tenth of the entire amount of space, according to studies of the large scale distribution of galaxies.

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At last you are in a place where the heat and high density are no longer bothering you. However, although the density is very low, the gas around you is extremely high in temperature. In fact, the temperature is so high that it is emitting lots of X rays, which are creating cancer-causing mutations in your body at a rapid rate. Well, at least the view is great! There are no stars anywhere within about 10,000 light-years of you, but at slightly greater distances your sky is brightened by many beautiful, star-filled structures, some with majestic spiral shapes. Where are you?

A) You are in the universe when it was about 200 million years old, just before galaxies began forming.

B) You are in the center of the Milky Way Galaxy, looking outward into the Local Group.

C) You are somewhere between the Andromeda and Milky Way galaxies in the Local Group.

D) You are in intergalactic space within a rich cluster of thousands of galaxies.

E) You are in the outskirts of a galaxy whose nucleus is a powerful quasar.

Answer:

1

Explanation:

Electrolysis is the passing of an current through a conducting solution, when the occurs, a chemical reaction takes place.

Heating a chemical will always cause a chemical reaction, which is why 3 is also correct

Some information as to why 2 is NOT correct.

2 is NOT a chemical reaction, but rather a process of physical separation. It uses selective boiling and condensation, but is not considered a chemical reaction.

as with 3, heating is not considered a chemical reaction, but rather a physical temperature change. This is always what it is considered to be (e.g boiling water is a physical temperature change, not a chemical reaction)

Hope this helps.

Hope this helps.

The correct answer is B. Weight directly measures force while mass directly measures the amount of matter.

Explanation:

Weight and mass are two related but not identical concepts. The first term "mass" can be found by measuring the amount of matter in a body or substance. For example, the mass in an apple is around 80 grams depending on its size. In this context, mass is measured using units such as grams or kilograms. On the other hand, weight considers not only the matter in an object but the force exerted in it, especially, the gravitational force. In the case of the apple, the weight is 1 N as newtons (N) are used to measure force and this is the result of multiplying the mass by gravity. According to this, option B is correct.

Answer:

a) The potential energy of the system is 1/9 of the total mechanical energy, when \(x= \frac{1}{3}\cdot A\).

b) The fraction of the total mechanical energy that is kinetic if the displacement is 1/2 the amplitude is 1/2.

c) The maximum kinetic energy is increased by a factor of 9.

Explanation:

a) From Mechanical Physics, we remember that the mechanical energy of mass-spring system (\(E\)), measured in joules, is the sum of the translational kinetic energy (\(K\)), measured in joules, and elastic potential energy (\(U\)), measured in joules. That is:

\(E = K + U\) (1)

By definitions of translational kinetic energy and elastic potential energy, we have the following expressions:

\(K = \frac{1}{2}\cdot m \cdot v^{2}\) (2)

\(U = \frac{1}{2}\cdot k\cdot x^{2}\) (3)

Where:

\(m\) - Mass, measured in kilograms.

\(v\) - Velocity of the mass, measured in meters per second.

\(k\) - Spring constant, measured in newtons per meter.

\(x\) - Elongation of the spring, measured in meters.

If we know that \(U = \frac{1}{9}\cdot E\), \(k = k\) and \(E = \frac{1}{2}\cdot k \cdot A^{2}\), then:

\(\frac{1}{18}\cdot k\cdot A^{2} = \frac{1}{2}\cdot k\cdot x^{2}\)

\(\frac{1}{9}\cdot A^{2} = x^{2}\)

\(x= \frac{1}{3}\cdot A\)

The potential energy of the system is 1/9 of the total mechanical energy, when \(x= \frac{1}{3}\cdot A\).

b) If we know that \(k = k\), \(x = \frac{1}{2}\cdot A\) and \(E = \frac{1}{2}\cdot k \cdot A^{2}\), then the equation of energy conservation associated with the system is:

\(\frac{1}{2}\cdot k\cdot A^{2} = \frac{1}{4}\cdot k\cdot A^{2}+K\)

\(K = \frac{1}{4}\cdot k\cdot A^{2}\)

The fraction of the total mechanical energy that is kinetic if the displacement is 1/2 the amplitude is 1/2.

c) From the Energy Conservation equation associated with the system, we know that increasing the amplitude by a factor of 3 represents an increase in the elastic potential energy by a factor of 9. Then, the maximum kinetic energy is increased by a factor of 9.

The more slanted the sun's rays are, the longer they travel through the atmosphere, becoming more scattered and diffuse. In the winter, Earth tilts away from the Sun.

A. The acceleration reflected in the data is 38 m/s²

B. The distance traveled by the blood during the period is 0.02 m

Acceleration is defined as the rate of change of velocity with time.

From the question given, we were told the the blood undergoes constant acceleration for 38 m/s².

Thus, we can say that the acceleration reflected in this data is 38 m/s²

The distance traveled by the blood can be obtain as follow:

v² = u² + 2as

1.29² = 0.1² + (2 × 38 × s)

1.6641 = 0.01 + 76s

Collect like terms

76s = 1.6641 - 0.01

76s = 1.6541

Divide both sides by 76

s = 1.6541 / 76

s = 0.02 m

Thus, we can conclude that the distance traveled by the blood during the period is 0.02 m

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