A train is moving with the velocity 10 m/s. It attains an acceleration of 4 m/s² after 5 seconds. Find the distance covered by the train in that time. ​

Answer: Because your mass is so much less than the mass of the Earth,

Explanation:

You can't feel your gravitational force. Because the Earth's gravity has the same pull on every object, all objects fall at the same speed (in a vacuum). On Earth, we have air. Air resistance will cause some objects to fall more slowly than others will.

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Answer:

A) The person's body temperature T_final after equilibrium is attained = 36.85°C

B) The change in the person's temperature after equilibrium is attained = 0.15°C

A high-quality medical thermometer can measure temperature changes as small as 0.1°C, hence, YES, it would detect the minute drop by 0.15°C too.

Explanation:

If we assume that the soft drink has the same density as water (since it is stated in the question that it is mostly water).

Density of water = 1 g/mL = 1 kg/L

Ignoring any heating by the person's metabolism,

A) So, heat lost by the human body = heat gained by the soft drink as it attains thermal equilibrium with the human body

Let the final temperature of the human body + soft drink set up be T

Heat lost by the human body = mCΔT

m = mass of the human body = 70.0 kg

C = Specific heat capacity of the human body = 3480 J/kg.K

ΔT = Temperature change of the human body = 37 - (Final temperature) = 37 - T

Heat lost by the body = 70 × 3480 × (37 - T)

= (9,013,200 - 243,600T) J

Heat gained by soft drink = mCΔT

m = mass of the soft drink = density × volume = 1 × 0.355 = 0.355 kg

C = specific heat capacity of the soft drink = specific heat capacity of the soft drink = 4182 J/kg.K

ΔT = (final temperature) - 12 = (T - 12)

Heat gained by the soft drink = 0.355 × 4182 × (T - 12) = (1,484.61T - 17,815.32) J

heat lost by the human body = heat gained by the soft drink as it attains thermal equilibrium with the human body

(9,013,200 - 243,600T) = (1,484.61T - 17,815.32)

9,013,200 + 17,815.32 = 1,484.61T + 243,600T

9,031,015.32 = 245,084.61T

T = (9,031,015.32/245,084.61)

= 36.8485614825 = 36.85°C

B) The change in the person's temperature = 37 - 36.85 = 0.15°C

A high-quality medical thermometer can measure temperature changes as small as 0.1°C, hence it would detect the minute drop by 0.15°C too.

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The equilibrium temperature is required and to find whether the temperature change can be measured by a thermometer is required.

The temperature is 310 K.

Yes, the thermometer can measure the temperature difference.

\(m_1\) = Mass of person = 70 kg

\(c_1\) = Specific heat of person = 3480 J/kg K

T = Equilibrium temperature

\(T_1\) = Temperature of person = \(37\ ^{\circ}\text{C}+273.15 =310.15\ \text{K}\)

\(1\ \text{L}=1\ \text{kg}\) of water

\(m_2\) = Mass of water = \(0.355\ \text{kg}\)

\(c_2\) = Specific heat of soft drink mostly water = \(4186\ \text{J/kg K}\)

\(T_2\) = Temperature of soft drink = \(12\ ^{\circ}\text{C}=285.15\ \text{K}\)

The heat equation is

\(m_1c_1(T-T_1)=m_2c_2(T_2-T)\\\Rightarrow m_1c_1T-m_1c_1T_1=m_2c_2T_2-m_2c_2T\\\Rightarrow T=\dfrac{m_2c_2T_2+m_1c_1T_1}{m_1c_1+m_2c_2}\\\Rightarrow T=\dfrac{0.355\times 4186\times 285.15+70\times 3480\times 310.15}{70\times 3480+0.355\times 4186}\\\Rightarrow T=310\ \text{K}\)

The temperature difference is \(T_1-T=310.15-310=0.15\ \text{K}=0.15\ ^{\circ}\text{C}\)

Yes, the thermometer can measure the temperature difference.

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Answer:

Propagation of Sound Waves:

Sound waves move (propagate) through a medium by means of particle-to-particle interaction. The source disturbs the immediately surrounding particles, causing them to vibrate about their fixed position at the same frequency as the source.

Answer:

Technician A is correct

Explanation:

The statement "charging system is needed to keep the battery fully charged and recharge the battery after starting" is correct

from technician's B point of view, that the charging system supplies electrical current needs after engine start is incorrect.

In-fact the charging system is dedicated to the battery alone, the electrical needs of the system is gotten from the battery.

Answer:

Explanation:

answer: 4 velocity.

if nominal gdp is 1800 and the money supply is 450, then what is velocity?

4 velocity.

If the nominal GDP is 1800 and the money supply is 450, then the velocity of money would be 4.

The total value of goods and services generated in an economy during a given time period, usually a year, is referred to as nominal GDP and is not adjusted for inflation. It depicts what products and services are now selling on the market.

Given:

Nominal GDP, PQ = 1800

Money supply, M = 450

From equation of exchange:

MV = PQ

V = (PQ) ÷ M

V = (1800) ÷ (450)

V = 4

Hence, if the nominal GDP is 1800 and the money supply is 450, then the velocity of money would be 4.

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Kieran had a greater average speed than Jevon. Let us go into more detail in the explanation below. To compare the average speeds of Kieran and Jevon, we need to find out the speed of each person.

We can use the formula speed = distance/time. Kieran ran 8 laps in 18 minutes, which means he ran 8/18 = 0.44 laps per minute. To find out Kieran's speed, we need to multiply this by the length of one lap. If we assume that the length of one lap is 400 meters, then Kieran's speed is:0.44 laps per minute × 400 meters per lap = 176 meters per minute Jevon ran 6 laps of the track, but we don't know how long it took him.

Therefore, we can't calculate his speed directly. However, we can still compare his speed to Kieran's by using ratios. If we assume that Jevon ran the same length of track as Kieran, then we can write the following equation: Kieran's speed/Jevon's speed = Jevon's time/Kieran's time.

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A fuel-filled rocket is at rest. It burns its fuel and expels hot gas. The gas has a momentum of 1,500 kg m/s backward. So, The momentum of the rocket is -1500 kg m/s.

According to the law of conservation of momentum, in a closed system, the total momentum before and after a process remains constant.

A fuel-filled rocket that is initially at rest expels hot gas as it burns its fuel. The gas has a momentum of 1500 kg m/s backward.

We are required to determine the momentum of the rocket.

Consider the fuel-filled rocket as a system.

We have: Momentum before the burn = 0 kg m/s (since the rocket was at rest initially)Momentum after the burn = momentum of the expelled gas

We can therefore say that the initial momentum of the system was zero (0), and after the burn, the total momentum of the system remains the same as the momentum of the expelled gas.

Therefore: Momentum of rocket = - momentum of expelled gas

The negative sign signifies that the rocket's momentum is in the opposite direction of the expelled gas.

Hence, the momentum of the rocket is -1500 kg m/s.

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The work needed if a force of 3N is used to move a table 25 metres is 75Nm (joules).

Work is a measure of energy expended in moving an object. This means that no work is done if the object does not move.

Force is a physical quantity that denotes the ability to push, pull, twist or accelerate a body and which has a direction and is measured in Newtons.

Work done on an object can be calculated by multiplying the force applied to move the object by the distance the object moves as follows:

Work done = Force (N) × distance (m)

According to this question, a force of 3 Newtons is used to move a table over a distance of 25 meters. The work done on the table can be calculated as follows;

W = 3N × 25metres

W = 75Nm

Therefore, 75Nm is the work done on the table.

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Answer:

Approximately \(1.5\; {\rm s}\).

(Assumptions: \(g = 9.81\; {\rm m\cdot s^{-2}}\); air resistance on the volleyball is negligible.)

Explanation:

Under the assumptions, acceleration of the volleyball would be \(a = (-g) = (-9.81)\; {\rm m\cdot s^{-2}}\) during the entire flight. (This value is negative since the ball is accelerating downwards- toward the ground.)

By the time the volleyball hits the ground, the volleyball would be at a position \(2.0\; {\rm m}\) below where it was launched. In other words, the (vertical) displacement of the volleyball during the entire flight would be \(x = (-2.0)\; {\rm m}\). (Negative since the ball is below where it was launched.)

Apply the SUVAT equation \((v^{2} - u^{2}) = 2\, a\, x\) to find the velocity of the volleyball right before hitting the ground. In this equation:

Rearrange this equation and solve for the velocity right before landing, \(v\). Note that because \(v\!\) is raised to the power of \(2\) in \((v^{2} - u^{2}) = 2\, a\, x\), both \(v = \sqrt{u^{2} + 2\, a\, x}\) and \(v = -\sqrt{u^{2} + 2\, a\, x}\) could satisfy this equation. However, \(v\!\!\) needs to be negative since the volleyball would be travelling downwards before reaching the ground.

Therefore, right before reaching the ground, velocity of the volleyball would be:

\(\begin{aligned} v &= -\sqrt{u^{2} + 2\, a\, x \\ &= -\sqrt{(6.0)^{2} + 2\, (-9.81)\, (-2.0)} \; {\rm m\cdot s^{-1}} \\ &\approx (-8.67)\; {\rm m\cdot s^{-1}}\end{aligned}\).

In other words, velocity of this volleyball has changed from \(u = 6.0\; {\rm m\cdot s^{-1}}\) (upwards) to \(v \approx (-8.67)\; {\rm m\cdot s^{-1}}\) (downwards) during this flight. Divide the change in the velocity \((v - u)\) by the rate of change in velocity \(a = (-9.81)\; {\rm m \cdot s^{-2}}\) to find the duration of this flight:

\(\begin{aligned}t &= \frac{v - u}{a} \\ &\approx \frac{(-8.67) - 6.0}{(-9.81)}\; {\rm s} \\ &\approx 1.5\; {\rm s}\end{aligned}\).

Based on the graph, it appears that the species most likely to be affected if the water temperature increases from 74°F to 80°F would be the rainbow trout.

It is because the graph shows that rainbow trout have a much narrower range of temperature tolerance compared to the other species listed, such as bass and catfish. While bass and catfish can tolerate temperatures up to 90°F, rainbow trout can only tolerate temperatures up to around 68°F.

As the water temperature increases beyond 68°F, the health and survival of rainbow trout are likely to be negatively impacted, making them more vulnerable to the effects of increasing water temperature. Therefore, if the water temperature were to increase from 74°F to 80°F, it would be expected to have a significant impact on the population of rainbow trout in the ecosystem.

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The force F1 is equal and opposite to the downward force thus, F1 is equal to 60 N. The force F2 is inclined to 30 ° from leftward force and it is equal to 38.97 N in magnitude.

Force is an external agent acting on a body to deform it or to change its state of motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction.

If two forces acting on a body from the same directions, then the net force will be the sum of these two forces. If they are acting from opposite directions, they will cancel each other in magnitude.

The force F1 is equal and opposite to the force acting downward. Thus its magnitude is 60 N. The force F2 is inclined to 30 ° from horizontal direction.

F2 = 45 cos 30 = 38.9 N.

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A beam of light containing waves that are aligned in the same direction is called polarized light.

Polarization of light is a property that applies to turning waves that shows the geometrical blooming of the oscillations. In a turning wave, the way of the oscillation is ninety degrees of the motion of the wave. Plane polarized light has the two waves in which the way of vibration is similar for all waves. In circular polarization, the electric vector turns about the way of straight light as the wave progresses. If you glow a beam of polarized moonlight that is chromated light (light of only the one frequency – in different words a similar color) through a solution of a metamorphic active substance,  the light that comes out,  its plane of polarization is seen to have rotating or turning around. The rotating body may be clockwise or anti-clockwise.

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Ann's speed with sandbags is 400 meters in 5 minutes, or an average of 80 meters per minute.

In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.Speed is defined as. The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.There are four types of speed which are uniform speed, variable speed, average speed, and instantaneous speed.

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Answer:

Due to increase in the inertia and velocity of the earth by the warming of air.

Explanation:

Answer:No

Explanation:The moon is a big rock with no air, so in that case no life so no water.

Answer:

Radio wave :

The wavelength of an electromagnetic wave is measured to be 600 m.

Explanation:

All remain are given in attachment!

The Conditions Young's double slit experiment uses two coherent sources of light placed at a small distance apart. Usually, only a few orders of magnitude greater than the wavelength of light are used. Young's double slit experiment helped in understanding the wave theory of light.

The double-slit experiment demonstrates that light and matter may exhibit both conventionally defined waves and particles; moreover, it demonstrates the inherently probabilistic nature of quantum mechanical events. Thomas Young initially performed this sort of experiment in 1801, as proof of visible light's wave behavior.

The Light was assumed to be made up of either waves or particles at the time. Around a hundred years later, at the dawn of modern physics, it was discovered that light could indeed exhibit wave-like and particle-like behavior.

If the light source is not coherent or monochromatic, the fringes will be blurred and there will be no interference pattern.

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The first ball that will hit the ground with the greatest amount of kinetic energy when there are three identical balls are released on earth, which are ball A which has an initial upward velocity of V = 0, ball B which has an initial downward velocity of V = 0, and ball C that has an initial horizontal velocity of V = 0 is ball C because ball C has an initial horizontal velocity of v0, it will possess the highest kinetic energy when it reaches the ground.

Kinetic energy is the energy of an object in motion. When an object is moving, it possesses kinetic energy. The kinetic energy of an object is directly proportional to the mass of the object and the square of its velocity. Kinetic energy is often denoted by the letter "K" and is expressed in joules (J) in SI units. It is one of the two forms of mechanical energy, the other being potential energy. Kinetic energy is a scalar quantity, which means it has only magnitude, and its direction is always parallel to the direction of the velocity vector of the object. The formula for kinetic energy is K= 1/2mv^2, where m is the mass of the object, and v is the velocity of the object.

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Answer:

This repulsion would be reduced to one-quarter of its former value.

Explanation:

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Occupant kinematics is referred to as the study of the motion of occupants inside of a vehicle during a crash or accident.

This refers to an incident which occurs unintentionally and suddenly thereby causing different types of harm and damage.

Occupant kinematics involves studying the motion of occupants in a crash and it is used in different types of investigations in other to know the main cause of death. It is also used in vehicle designs so as to produce safer ways and materials used in them so as to reduce the risk of serious harm to the body.

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You would have 666 terms in the calculation for the electric potential energy of the 37-charge configuration.

To calculate the electric potential energy for a configuration with 37 charges, you would need to consider the interactions between each pair of charges.

The formula for electric potential energy between two point charges q1 and q2 separated by a distance r is given by:

PE = [k × (q1 × q2)] / r

Where:

   PE is the electric potential energy

   k is Coulomb's constant (approximately 9 x 10^9 Nm^2/C^2)

   q1 and q2 are the magnitudes of the charges

   r is the distance between the charges

Since you have 37 charges, you would need to calculate the electric potential energy for each pair of charges and sum them up. To determine the total number of terms in the calculation, you can use the formula for the number of combinations of n objects taken 2 at a time:

Number of terms = nC2 = n! / ((n - 2)! × 2!)

In this case, n = 37:

Number of terms = 37! / ((37 - 2)! × 2!)

= 37! / (35! × 2!)

= (37 × 36) / 2

= 666

Therefore, you would have 666 terms in the calculation for the electric potential energy of the 37-charge configuration.

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The trailer pulls on the vehicle with an average force of A=B=C.

Newton's second law of acceleration is expressed as follows: F = ma

In this case, the mass is m, and the acceleration is a.

Assume that g=9.8 m/s2 represents the acceleration caused by gravity.

The acceleration of the object will be zero if it is travelling at a constant speed.

Because of the constant velocity, the van's net force on the trailer is therefore zero.

As a result, the van applies the same amount of force to each trailer. Thus, FA FB = FC.

As a result, each trailer pulls on the van with the same amount of force in the opposite direction. FA' = FB' = Fc', therefore.

As a result, A=B=C represents the rank of the force the trailer exerts on the van.

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Explanation:

what is the difference between cytology and histology

Histology involves the study of tissue and Cytology involves the study of cells, both of which are derived from various organs of the human body. The Histology laboratory is responsible for the preparation of tissue for diagnosis by Pathologists.

Answer:

Radio waves can be considered a form of light waves since both are transverse waves (vibrate perpendicular to direction of travel).

Sound waves are longitudinal waves and require a medium (such as air) for propagation.

The value that completes the box plot distribution of wind speed statement is 48 km/h.

To determine the value that completes the statement, locate the median, which represents the 50th percentile. From the plot, the median (50th percentile) is at approximately 42 km/h.

The box extends from the first quartile (25th percentile) to the third quartile (75th percentile), so determine the range of speeds that contains 50% of the measurements by finding the difference between the median and the first quartile, and then adding it to the median.

The plot estimates that the difference between the median and the first quartile is approximately 6 km/h. Therefore, 50% of the speeds are between 36 km/h and (42 + 6) km/h, which simplifies to 36 km/h and 48 km/h.

So the value that completes the statement is 48 km/h.

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Answer:

100 newton

Explanation:

newton third law of motion says to every action there is an always an equal and opposite reaction so the magnitude will stay equal but opposite direction

Answer:

- 100N is the answer of this question

The average angular acceleration of a phonograph turntable as it slows down and stops is 0.025 rev/s^2.

The average angular acceleration of a phonograph turntable as it slows down and stops can be calculated as: α = (ωf - ωi) / t

In this case, the initial angular velocity is 0.75 rev/s and the final angular velocity is 0 rev/s (since the turntable comes to a stop). The time interval is 30 s. Substituting these values into the formula, we get:

α = \((0 - 0.75 rev/s) / 30 s\)

α = \(-0.025 rev/s^2\)

The negative sign indicates that the turntable is slowing down, and the magnitude of the average angular acceleration is 0.025 rev/s^2.

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