In a moving bus, a person who is near to the engine feels very warm. The method of heat transmission from the engine to the person is through​

At 20 miles per hour, the force of your car impacting a surface is four times as great as at 10 MPH.

Impact surface means a surface that either moves or comes in contact with a moveable surface and is subject to damage by repeated sudden force, impact, or contact, such as doors and windows with certain parts of their frames.

The term “impact surface” means an interior or exterior surface that is subject to damage by repeated impacts. an impinging or striking especially of one body against another. : a forceful contact or onset. also : the impetus communicated in or as if in such a contact. : the force of impression of one thing on another .

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An ideal gas expands in an adiabatic process that increases its volume by a factor of 3. 5. The initial pressure is 6. 4 × 10^5 Pa. The final pressure is 8.9 × 10^5 Pa.

In thermodynamics, an adiabatic process is a type of thermodynamic process that occurs without transferring heat or mass between the thermodynamic system and its environment. Unlike an isothermal process, an adiabatic process transfers energy to the surroundings only as work.An adiabatic process is defined as a process in which no heat transfer takes place. This does not mean that the temperature is constant, but rather that no heat is transferred into or out from the system.adiabatic process, in thermodynamics, change occurring within a system as a result of transfer of energy to or from the system in the form of work only; i.e., no heat is transferred. A rapid expansion or contraction of a gas is very nearly adiabatic.

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The apparent weight of the object in the lift is 900 N.

When a man is travelling in an elevator, his weight appears to change. His changed weight is known as apparent weight.

Here,

The elevator is ascending. So the apparent weight,

      R = mg + ma

      R = m(g + a)

      R = 80(10 + 1.25) = 80x 11.25

      R = 900 N

Hence,

The apparent weight in the lift is 900 N.

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Answer:

0.89kg

Explanation:

PE=mgh

PE=420 m=? g=9.8m/s^2 h=48

Making m the subject of formula

[tex]m = \frac{pe}{gh} [/tex]

[tex] = \frac{420}{9.8 \times 48} [/tex]

[tex] = \frac{420}{470.4} [/tex]

m=0.89kg

The refractive index of the crown glass block can be calculated using Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities in the two media.

Refraction is the bending of light that occurs when it passes through a medium. It occurs when light moves from one medium to another and is caused by the change in the speed of light as it passes through different mediums. When light passes through a medium, the light waves are bent and the angle of the wave changes. This wave bending is what causes the phenomenon of refraction.

In this case, the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities in the two media, which is the refractive index of the crown glass block.

The refractive index of the crown glass block is calculated as follows:

Refractive index = Sin(49°) / Sin (28.1°)

Refractive index = 1.75

Therefore, the refractive index of the crown glass block is 1.75.

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a) The magnitude of the net magnetic force that acts on the particle is 2.18 x 10-6 N.
b) The angle that the net force makes with respect to the x axis is 63.8°.

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A pictorial representation of the magnetic field which describes how a magnetic force is distributed within and around a magnetic material.

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Answer:

energy

Explanation:

Work is the quantity of energy. used to move an object.

The force on a charge of 0.5 C in an electric field of strength 4.0 N/C is 2.0 N.

What is electric field?

Any electrically charged object or collection of objects is surrounded by a physical field known as the electric field. Since it is a vector field, its magnitude and direction are both present. The force per unit charge that a test charge would experience if it were placed at that location in space is known as the electric field.

A stationary charge, such as a charged particle or an electrically charged item, can produce an electric field, as can a changing magnetic field, as in the case of electromagnetic waves. An electric field's strength at a given location is inversely proportional to its distance from the charge and inversely proportional to the quantity of charge present.

The force on a charged particle in an electric field is given by the formula:

                         F = qE

where F is the force in Newtons, q is the charge in Coulombs, and E is the electric field strength in N/C.

Given the electric field strength E = 4.0 N/C and the charge q = 0.5 C, we can calculate the force as follows:

F = qE

F = (0.5 C) x (4.0 N/C)

F = 2.0 N

Therefore, the force on a charge of 0.5 C in an electric field of strength 4.0 N/C is 2.0 N.

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By the usage of momentum change: The formulation to calculate impulse via momentum change is by means of calculating the mass of the physique and the velocity. In this case, Impulse will be equal to the product of mass and velocity. So J= m*v.

Momentum, Impulse, and the Impulse-Momentum Theorem

p = m v . p = m v . You can see from the equation that momentum is directly proportional to the object's mass (m) and speed (v). Therefore, the higher an object's mass or the greater its velocity, the greater its momentum.

The object's trade in momentum is equal to the impulse it experiences. The system is F • t = Δ m • v . The product of an object's mass and velocity determine its exchange in momentum.

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Intestinal stress from protein is high. the optimal response is (C). According to the vast majority of studies, consuming more protein than 2 grams per kilogram of body mass per day can have adverse medical consequences over term.

Intestinal pain and indigestion are signs of eating too much protein. A high-protein diet can also assist with diarrhea and constipation, which is why a fish filet or a roast chicken is preferable to a spaghetti meal.

What effects does protein have on your gut?

Increased risk of illness is caused by infections and bacteria that ferment proteins when excessive and undigested consumption of protein is present. By controlling the gene transcription in pertinent signal transduction pathways as well as the production of chemicals, such changes inside the microbiota can have an effect on the immune system as well as the gut barrier.

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Answer:

9.1 kg

Explanation:

Potential energy of an object at a height of h meters and mass m is given by
PE = mgh Joules

where

m = mass of the object in kg
h = height in meters

g= gravitational acceleration constant = 9.81 m/s²

Given PE = 1783.6 J

h = 20 m

1783.6 = m x 9.81 x 20

1783.6 = 196.2 m

m = 1783.6 /196.2

= 9.09 kg

The negative angular acceleration required to bring the wheel to rest is approximately -0.126 rad/s^2, and the time needed to bring the wheel to rest is approximately 20.04 seconds.

Let's first find the initial and final angular velocities of the wheel.

The initial angular velocity is zero because the wheel is initially at rest.

The final angular velocity can be found using the formula:

ωf = ωi + αt

where

ωf = final angular velocity

ωi = initial angular velocity (which is zero)

α = angular acceleration (5.0 rad/s^2)

t = time (8.0 s)

ωf = 0 + (5.0 rad/s^2)(8.0 s) = 40.0 rad/s

The negative angular acceleration can be found using the formula:

Δω = ωf - ωi = αt

where

Δω = change in angular velocity (which is equal to the final angular velocity because the initial angular velocity is zero)

α = angular acceleration (which is negative because the wheel is slowing down)

t = time

So we have:

Δω = 40.0 rad/s

αt = -α(10 rev)(2π rad/rev)/t

where we have converted 10 revolutions to radians (2π radians per revolution).

Setting these two expressions equal to each other and solving for α, we get:

α = -Δω/t = -(40.0 rad/s)/(10 rev x 2π rad/rev x t)

α = -2.53/t rad/s^2

Finally, we can use the formula for angular deceleration to find the time needed to bring the wheel to rest:

ωf^2 = ωi^2 + 2αΔθ

where

Δθ = angle through which the wheel rotates during the deceleration (which is 10 revolutions)

ωf = final angular velocity (which is zero)

ωi = initial angular velocity (which is 40.0 rad/s)

α = angular acceleration (which is negative)

So we have:

0 = (40.0 rad/s)^2 + 2(-2.53/t)(10 rev x 2π rad/rev)

0 = 1600 - 318.48/t

t = 20.04 s

Therefore, the negative angular acceleration required to bring the wheel to rest is approximately -0.126 rad/s^2, and the time needed to bring the wheel to rest is approximately 20.04 seconds.

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An object of mass m to covers 2000m max vertical distance from the ground thrown at the velocity of 197 m/s

Velocity is "rate of change of displacement with respect to time".

i.e. v= dx/dt

it is also defined as displacement over time. i.e. v=Displacement/Time.

Velocity shows how much distance can be covered in unit time. It's SI unit m/s.

Acceleration is rate of change of velocity with respect to time.

i.e. a = dv/dt

if an object changes its velocity in short time, we can say that it has grater acceleration.

a= dv/dt =Δv/Δt = [tex]\frac{v_{2} - v_{1}}{t_{2} - t_{1}}[/tex]  

where    v₂= initial velocity

              v₁= final velocity

              t₂= initial time

              t₁ = final time  

Given,

Distance = 2000m

Acceleration due to gravity 10 m/s²

By the equation of kinematics,

v² = u² + 2as....... 1)

where v = final velocity

           u = Initial velocity

           a = acceleration

           s = distance

in this case when an object of mass m is thrown vertically it attains max distance at that point final velocity becomes zero. We are performing this experiment on earth so our acceleration will be acceleration due to gravity g.

ie. v=0 and a = g

equation 1) becomes

0=u² + 2×9.8×2000

u²+ 39200 = 0

u = √39200 = 197 m/s

u= 197 m/s

Hence calculated velocity with which it was thrown is 197 m/s

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Answer:

V ρ = W       volume * weight density = weight

Since rod A will produce less resistance to sand it will sink more.

The vehicle's speed at s = 4.7105 m is approximately 13.77 m/s (to two significant figures), and the magnitude of its total acceleration is approximately 4.50 m/s^2 (to two significant figures).

A vehicle is moving up a ramp that follows the curve y=0.6x^2. At the start, the vehicle has a speed of 13.6m/s and it increases its speed at a rate of 0.078m/s^2. When it reaches s=4.7105m, the vehicle's speed is 13.77m/s, and the magnitude of its total acceleration is 4.50m/s^2.

These values were calculated using the equations of motion for motion with constant acceleration. The horizontal component of the acceleration is 4.492m/s^2 and the vertical component is 0.078m/s^2.

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Answer:

Movements of the tectonic plates

Explanation:

Earthquake activity in California is primarily caused by the movement of the tectonic plates that make up the Earth's crust. California lies along the boundary where the Pacific Plate and the North American Plate meet, which is known as the San Andreas Fault. The movement of these plates causes stress to build up in the Earth's crust, which can lead to earthquakes. Additionally, there are many other faults in California, both large and small, that contribute to earthquake activity in the state.

Therefore, if MA is less than 1, output velocity would increase while input torque would decrease.

The best performance that can be achieved is the mechanical advantage, which is calculated under the presumption that a machine does not lose power through deflection, friction, and wear. Because of this, it is frequently referred to as the ideal mechanical advantage (IMA).

A machine may not always have a greater mechanical advantage than one. This means that a person must exert more force than the machine can support. Machines like class three levers are an example of this. A class three lever can only move so much when a person presses on it.

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When particles collide, they can either bounce off each other or stick together to form larger clusters.

The outcome of a collision depends on the properties of the particles involved, including their size, shape, and composition, as well as the conditions under which the collision occurs, such as temperature, pressure, and velocity. In elastic collisions, particles bounce off each other without losing any energy or undergoing any permanent deformation. In inelastic collisions, particles stick together to form larger clusters, which can range in size from small molecules to large aggregates. In some cases, collisions can also result in chemical reactions, where the particles involved undergo a chemical transformation to form new compounds. The way in which particles collide and interact with each other is important in many areas of science and engineering, including materials science, chemical reactions, and the behavior of gases and fluids. By understanding the dynamics of particle collisions, scientists and engineers can develop new materials and processes, and gain insights into the fundamental nature of matter and energy.

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The magnitude of the gravitational force that exists between the two persons would be 2.01 × 10^-7 N.

The gravitational force between two objects can be calculated using the formula:

F = G(m1m2)/r^2

where F is the gravitational force, G is the gravitational constant (6.67 × 10^-11 Nm^2/kg^2), m1 and m2 are the masses of the two objects, and r is the distance between their centers of mass.

Plugging in the values given, we get:

F = (6.67 × 10^-11 Nm^2/kg^2)(75.0 kg)(90.0 kg)/(5.0 m)^2

F = 2.01 × 10^-7 N

Therefore, the gravitational force between the two people is approximately 2.01 × 10^-7 N.

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The impedance is 17587 ohm

The current is 0.00085 A

Impedance is a measure of the opposition that an electrical circuit or component offers to the flow of an alternating current (AC) at a specific frequency. It is similar to resistance, which is the opposition offered to the flow of a direct current (DC). However, impedance takes into account not only the resistance but also the capacitance and inductance of the circuit or component.

The Capacitive reactance is;

1/2πfC

= 1/2 * 3.142 * 500 * 0.022 * 10^-6

= 14467 ohms

Then the impedance is;

Z = √(10000)^2 + (14467 )^2

Z = 17587 ohm

The current = Vrms/Z

= 15 V/ 17587 ohm

= 0.00085 A

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Answer:

Explanation:

Given :-

Solution :-

Frequency of a wave is given by :

where,

On substituting the values we get :

[tex]\dashrightarrow \sf F = \dfrac{240}{0.20} \\ \\ \dashrightarrow \rm F = 1200 \: Hz \\[/tex]

A Digital Voltmeter is used to measure AC or DC voltage consumed with the aid of an equipment and for displaying the cost directly in numeric shape as an alternative of the usage of a pointer deflection. It is thus, a voltage-sensitive device.

Image end result for digital voltmeter,

A digital voltmeter (DVM) measures an unknown enter voltage through converting the voltage to a digital value and then shows the voltage in numeric form. DVMs are usually designed around a distinct kind of analogue-to-digital converter known as an integrating converter.

Advantages of electronic voltmeter:

Digital display of the output eliminates human reading errors. Readings are accurate and fast in contrast to analog meters. Digital Voltmeter is more steady and reliable. Smaller in dimension and cost-effective.

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The area of the shaded region is 4621.5 cm2 - 1083.8 cm2 = 3537.7 cm.

Area is the space or size of a two-dimensional surface or shape. It is a measure of the size of a surface and is typically expressed in square units, such as square feet or square meters. Area is usually calculated by multiplying the length of a shape by its width. For example, the area of a rectangle with a length of 4 feet and a width of 3 feet is 12 square feet. Area can also be calculated for shapes with curved sides such as circles, triangles, and other polygons.

The shaded region is the area between the two circles. To calculate the area of the shaded region, we need to subtract the area of the inner circle from the area of the outer circle.

The area of the outer circle can be calculated using the formula A = πr2, where r is the radius of the circle. Since the two circles have the same center, the radius of the outer circle is twice the radius of the inner circle.

Therefore, the radius of the outer circle is 2 × (117.436/2π) = 38.212 cm.

The area of the outer circle is A = π × 38.212^2 = 4621.5 cm2.

The area of the inner circle can be calculated using the same formula: A = πr2. The radius of the inner circle is (117.436/2π) = 18.606 cm.

The area of the inner circle is A = π × 18.606^2 = 1083.8 cm2.

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Answer:

[tex]1000\; {\rm N}[/tex].

Explanation:

By Pascal's Law, the pressure on the two pistons should be the same.

Let [tex]F_{\text{in}}[/tex] and [tex]F_{\text{out}}[/tex] denote the forces on the two pistons. Let [tex]A_{\text{in}}[/tex] and [tex]A_{\text{out}}[/tex] denote the area of the two pistons.

Divide force by area to find the pressure.

By Pascal's Law, [tex]P_{\text{in}} = P_{\text{out}}[/tex]. Therefore:

[tex]\displaystyle \frac{F_{\text{in}}}{A_{\text{in}}} = \frac{F_{\text{out}}}{A_{\text{out}}}[/tex].

It is given that [tex]F_{\text{in}} = 40\; {\rm N}[/tex] and that [tex]A_{\text{out}} = 25\, A_{\text{in}}[/tex]. Therefore, the equation becomes:

[tex]\displaystyle \frac{40\; {\rm N}}{A_{\text{in}}} = \frac{F_{\text{out}}}{25\, A_{\text{in}}}[/tex].

Rearrange to find [tex]F_{\text{out}}[/tex]:

[tex]\begin{aligned}F_{\text{out}} &= \frac{(40\; {\rm N})\, (25\, A_{\text{in}})}{A_{\text{in}}} = 1000\; {\rm N}\end{aligned}[/tex].

Answer:

x J = (1500 kg)(29 m/s)(y m/s)

Explanation:

x J = (1500 kg)(29 m/s)(y m/s)

To know that a 1500 kg car is moving at 29 m/s is not enough.

The value of x depends on y. You’re missing a number of meters and a quantity of ‘per seconds’ somewhere in your problem statement and you need to find them in order to solve the problem

Data set A corresponds to the uniform line of charge and data set B corresponds to the uniformly charged sphere ar e correct . So, option A is the correct answer.

Data set A corresponds to the uniform line of charge because it shows a linear relationship between the electric field strength and the distance from the center of the object. This is characteristic of a uniform line of charge, where the electric field strength is directly proportional to the distance from the center of the line.

Data set B corresponds to the uniformly charged sphere because it shows a non-linear relationship between the electric field strength and the distance from the center of the object. This is characteristic of a uniformly charged sphere, where the electric field strength decreases as the distance from the center of the sphere increases.

Therefore, as per the above explanaions, option A is correct.

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The question is :

Which of the following options correctly identifies which data set corresponds to the uniform line of charge and which one corresponds to the uniformly charged sphere, and provides an explanation for the answer?

A) Data set A corresponds to the uniform line of charge because it shows a linear relationship between the electric field strength and the distance from the center of the object, while data set B corresponds to the uniformly charged sphere because it shows a non-linear relationship between the electric field strength and the distance from the center of the object.

B) Data set A corresponds to the uniformly charged sphere because it shows a non-linear relationship between the electric field strength and the distance from the center of the object, while data set B corresponds to the uniform line of charge because it shows a linear relationship between the electric field strength and the distance from the center of the object.

C) Both data sets correspond to the uniformly charged sphere because they both show a non-linear relationship between the electric field strength and the distance from the center of the object.

D) Both data sets correspond to the uniform line of charge because they both show a linear relationship between the electric field strength and the distance from the center of the object.

If a ball rolls from x= -5m t x= 32.4m in 8.9s. Then its average velocity is 4.2022 m/s.

Velocity is defined as the rate of change of displacement or the ratio of displacement and time.

Mathematically,

V=S/t

where

V= velocity in m/s

S= Displacement in m. we know that displacement can be positive and negative. when displacement is happening in a positive direction that is taken to be the positive and vice versa.

t= time taken in seconds.

Here in the given question

displacement happening in +ve  and  -ve directions,

look into the below figure.

so that the total displacement is

S= 32.4 -(-5)

S=37.4m

t=8.9 s

Velocity V=37.5/8.9

=4.2022m/s

Hence the average velocity of the ball is 4.2022m/s.

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According to the question it took the plane 675 seconds (11 minutes and 15 seconds) to travel 3.2 km.

Travel is the act of moving from one place to another, either for leisure or business purposes. It is often associated with exploration and discovery, as well as the opportunity to experience new cultures, cuisines, and landscapes.

The velocity of the plane relative to the ground is the vector sum of the air velocity (3.0 m/s [E]) and the wind velocity (1.75 m/s [25° W of S]).

The vector sum can be calculated using the Law of Cosines and the Law of Sines.

Using the Law of Cosines, we can calculate the magnitude of the vector sum:

|v| = √(3.0 m/s)2 + (1.75 m/s)2 - 2(3.0 m/s)(1.75 m/s)cos(25°)

|v| = 4.73 m/s

Using the Law of Sines, we can calculate the angle of the vector sum:

sin(θ) = (1.75 m/s)sin(25°) / 4.73 m/s

θ = 20.9°

Therefore, the velocity of the plane relative to the ground is 4.73 m/s [20.9° W of S].

To find the time it took the plane to travel 3.2 km, we can use the equation:

t = d / v

where t is the time in seconds, d is the distance in meters, and v is the velocity in m/s.

t = 3200 m / 4.73 m/s

t = 675 s

Therefore, it took the plane 675 seconds (11 minutes and 15 seconds) to travel 3.2 km.

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The amount of heat energy gained by the sample of copper is 15600 J

First, we shall carefully list out the given parameters from the table in the question above. This is given below:

The heat gained by the sample of copper cab be obtained as follow:

Q = MCΔT

Q = 2 × 390 × 20

Q = 15600 J

Thus, from the above calculation, we can conclude that the heat gained is 15600 J (none of the options are correct)

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