Energy that Is transferred from a warmer object to a cooler object is called what?

Given,

The weight, W = 190 N

The height, H = 45 m

The potential energy is calculated by the formula,

Calculate the potential energy by substituting the given values.

Thus, the potential energy is 8,550 Joules.

Answer:

2 hour=2×60=120 min

2 hour+10 min =120+10=130 min

1 min=60 second

130 min=130×60=7,800 seconds

2 hour 10 min=7,800 seconds

Explanation:

Thanks!!!!!!

Answer:

The answer is 7800 seconds

Explanation:

1 hour = 60 mins

2 hours = 120 mins (60×2)

120 mins + 10 mins = 130 mins

130min = 130 × 60 = 7,800 seconds

Sooo... 2 hr 10 min = 7,800 seconds

hope this helps :D

So, to observe the red traffic light as yellow, the observer must approach the light with a speed of 0.148 times the speed of light.

When the observer approaches the red traffic light with a speed, the light appears shifted towards the blue end of the spectrum. The apparent frequency and wavelength shift is calculated using the Doppler effect equation.

The Doppler shift is given by the relation f′= f (v+vO)/c

where, f' is the observed frequency, f is the frequency of the wave, v is the speed of the observer, v O is the speed of the source and c is the speed of the wave.

For the red traffic light,

f= c/λ = 4.44 × 10^14 Hzλ

= 675 nm

For the yellow traffic light,

f = c/λ

= 5.22 × 10^14 Hzλ

= 575 nm

As we know that the light appears yellow when the red light shifts 575 nm.

Therefore, the observer should be approaching the light with a speed given by the relation as,

∆f/f = v/c⇒ ∆λ/λ

= v/c⇒ v

= c (∆λ/λ)

= c [(λ_0 - λ)/λ_0 ]

Where,λ is the wavelength of the shifted light (λ = 575 nm),λ0 is the wavelength of the unshifted light (λ0 = 675 nm)

Therefore,

v = c [(675 - 575)/675]⇒ v

= 0.148c

So, the observer must approach the red traffic light at a speed of 0.148 times the speed of light to observe it as yellow.

An observer, when approaching a red traffic light, experiences a shift in the light's wavelength towards the blue end of the spectrum. This apparent frequency and wavelength shift is given by the Doppler effect equation.

The Doppler shift can be expressed using the relation,

f′= f (v+vO)/c

where, f' is the observed frequency, f is the frequency of the wave, v is the speed of the observer,v O is the speed of the source and c is the speed of the wave.

The frequency and wavelength of the red and yellow traffic lights are,

f= c/λ

= 4.44 × 10^14 Hz,

λ = 675 nm and

f = c/λ

= 5.22 × 10^14 Hz,

λ = 575 nm.

Since we know that the light appears yellow when the red light shifts by 575 nm, the observer must be approaching the light with a velocity given by the following relation:

∆f/f = v/c⇒ ∆λ/λ

= v/c⇒ v

= c (∆λ/λ_0 ) where λ_0 is the wavelength of the unshifted light (λ_0 = 675 nm)

Therefore,

v = c [(675 - 575)/675]⇒ v

= 0.148c

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This statement is True-  in a driven LCR circuit, the peak value for voltage does not occur at the same time as the peak value for current. they are separated by some phase angle.

An LCR circuit is an electrical circuit that consists of an inductor (L), capacitor (C), and resistor (R) linked in series or parallel. It is also referred to as a tuned circuit, resonant circuit, or LCR circuit. Phasors provide a better framework for understanding the LCR circuit analysis. A spinning quantity is a phasor.

A crucial illustration of a resonant circuit is the LCR circuit. At resonance, the phase angle is equal to zero and the impedance is at its lowest value, Z=R. To control the amount of light emitted by electronic devices like computers, televisions, and smartphones, the LCR circuit is a component of these gadgets.

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Answer:

R = 40 cm

Explanation:

From the formulae of magnification:

\(\frac{q}{p}=\frac{image\ height}{object\ height}\\\\\frac{q}{10\ cm} = \frac{4\ cm}{2\ cm}\\\\q = (10\ cm)(2)\\\\q = 20\ cm\)

where,

q = image distance from mirror

p = object distance from mirror

Using thin lens formula:

\(\frac{1}{f}=\frac{1}{p}+\frac{1}{q}\\\\\frac{1}{f}=\frac{1}{10\ cm}+\frac{1}{-20\ cm}\\\\\frac{1}{f} = 0.05\\\\f = 20\ cm\)

q is negative for the virtual image.

Now, the radius of the spherical mirror is double the focal length (f):

R = 2f

R = 2(20 cm)

R = 40 cm

Answer:

The nucleolus is a ribosome factory, composed of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and protein . ... Once the subunits have been assembled, they are transported out of the nucleolus to the cytoplasm for use in translation (protein synthesis). Nucleoli are not static structures.

Explanation:

Answer:  its the central and most important part of an object, movement, or group, forming the basis for its activity and growth

where a glider is gliding along a straight air track at constant speed with no friction or air resistance, we can conclude that the net force on the glider is zero.

According to Newton's first law of motion, an object at rest or moving with constant velocity will continue to do so unless acted upon by an external force. In this case, the glider is moving along the air track at a constant speed, indicating that the net force on the glider is zero.

Since there is no friction or air resistance, there are no opposing forces acting on the glider to change its state of motion. The absence of these forces means that the applied force, such as the initial push or thrust, is balanced by an equal and opposite force, resulting in a net force of zero.Therefore, we can conclude that the net force on the glider is zero in this scenario.

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It's important to know that the wavelength and the frequency has inverse relationship, which means the longest is its wavelength, the more intense will be the frequency.

Answer:

44J

Explanation:

Given parameters:

Mass of rock  = 0.22kg

Initial velocity  = 20m/s

Distance moved  = 10m

Unknown:

Initial kinetic energy of the rock  = ?

Solution:

To solve this problem, we need to understand that kinetic energy is the energy due to the motion of a body.

It is mathematically expressed as;

     Kinetic energy  = \(\frac{1}{2}\) m v²

m is the mass

v is the velocity

   Kinetic energy  =  \(\frac{1}{2}\) x 0.22 x 20²   = 44J

The color of the visible spectrum with the shortest wavelength is violet. Violet light has a wavelength of approximately 400 nanometers (nm).

The visible spectrum is the portion of the electromagnetic spectrum that human eyes can detect, ranging from red, with the longest wavelength, to violet, with the shortest wavelength. As the wavelength decreases, the energy of the light increases. Violet light has a shorter wavelength than blue, green, yellow, orange, and red light, making it the color with the highest energy in the visible spectrum. Wavelength is inversely related to frequency, meaning that shorter wavelengths correspond to higher frequencies. Violet light has a higher frequency than any other color in the visible spectrum. This high frequency is associated with its short wavelength.

When white light, such as sunlight, passes through a prism or diffracts, it can be separated into its component colors, revealing the entire visible spectrum. The shortest wavelength observed in this spectrum is violet light, representing the highest energy and shortest visible light waves.

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Answer: -31039 J

Explanation:

The speed of the spaceship as measured by the earth observer is 0.4c.

To determine the speed of the spaceship, we can use the time dilation formula:
Δt' = Δt/√(1-v²/c²)
where Δt is the time interval measured by the earth observer, Δt' is the time interval measured by an observer on the spaceship, v is the velocity of the spaceship, and c is the speed of light.
In this case, Δt' = 0.75 μs and the proper length of the spaceship, L, is 300 m.
Using the equation for proper length contraction, we can find L' = L/√(1-v²/c²)
Solving for v in both equations and equating them, we get:
v = (L/L') * c * √(1-((Δt/Δt')²))
Plugging in the values, we get v = 0.4c, where c is the speed of light. Therefore, the speed of the spaceship as measured by the earth observer is 0.4 times the speed of light.

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Explanation:

a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat

Answer:

a) Alpha rays because an alpha ray involves a Helium nucleus - with an atomic number of two and a mass number of 4

Beta rays would be next which involve an electron which is thousands of times less massive than an alpha ray

If we lived in a universe that was shrinking rather than expanding, there would be several consequences:

1. Redshift instead of blue shift

2. The Universe's age would be shorter

3. If the Universe had shrunk, it is conceivable that the CMBR would not have been as consistent as it is now.

4. The shape of the Universe could be altered.

1. Redshift instead of blue shift would be observed in light from distant galaxies. As a result, the light's wavelengths would be shorter than when it was emitted, indicating that the galaxy's distance was decreasing rather than increasing.

2. The Universe's age would be shorter. The time it takes for light to travel a certain distance is proportional to the distance it has traveled, according to the speed of light. As a result, if the Universe is shrinking, the light from distant objects has traveled less than it would if the Universe were expanding. As a result, the age of the Universe would be shortened.

3. The expansion of the Universe is one of the main reasons for the cosmic microwave background's uniformity. The CMBR is a form of radiation that fills the Universe and is leftover from the Big Bang. The uniformity of the CMBR suggests that the Universe was homogenous at the time it was created. If the Universe had shrunk, it is conceivable that the CMBR would not have been as consistent as it is now.

4. The shape of the Universe could be altered. When the Universe expands, it becomes flatter, and when it contracts, it becomes rounder. The Universe's shape is determined by the matter, energy, and curvature of space-time in it. It's possible that if the Universe shrank, it would become more curved.

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The expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by E = Y * e * ln(L) * A

The work done to stretch the wire can be calculated by integrating the force applied over the displacement. In this case, the force applied is the tension (T) in the wire, and the displacement is the change in length (ΔL) from the original length (L) to the stretched length (L + ΔL).

The tension in the wire is given by Hooke's law, which states that the tension is proportional to the extension of the wire:

T = Y * (ΔL / L)

where Y is the Young's modulus of the material of the wire.

Now, let's calculate the work done to stretch the wire:

dW = T * dL

Integrating this expression from L to L + ΔL:

W = ∫ T * dL = ∫ Y * (ΔL / L) * dL

W = Y * ΔL * ∫ (dL / L)

W = Y * ΔL * ln(L) + C

Here, C is the constant of integration. Since the energy stored in the wire is zero when it is unstretched (ΔL = 0), we can set C = 0.

Finally, the expression for the energy stored in the wire (E) is:

E = W = Y * ΔL * ln(L)

or, if we substitute the cross-sectional area (A) and strain (e) of the wire, where e = ΔL / L:

E = Y * e * ln(L) * A

Thus, the expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by:

E = Y * e * ln(L) * A

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The correct answer is Option B) Open.

A schematic can tell an electrician that the switches are normally open

until the sensor senses smoke.

A simple, understandable graphical representation of a plan or model is called a schematic diagram. Simple lines and symbols are used in schematics to convey details like what, how, and where. A schematic diagram's primary role is to highlight circuit components and the relationships between them. Schematics are a very useful tool for troubleshooting since they show which parts are connected in series or parallel and how.

An example of an electrical switch is one that is normally open. A typically open switch remains "off" when it is not compressed. The inside electrical connections are to blame for this. In a typically open switch, the contacts are open when the switch is off. This indicates that the switch is "off" because the electrical connection is damaged.

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The correct statement about the ball 1 is the magnitude of buoyancy force is equal to that of ball's weight.

The upward force exerted on an object that is wholly or partially immersed in a fluid is called upthrust.

Ball 1 is floating on water.

Weight of the ball 1 is Fg = m₁g is acting vertically downward.

Force of buoyancy Fb = ρvg is acting vertically upwards

Net force acting on the ball is zero, Fg = Fb

As the ball 1 floats without sinking, it is in equilibrium.

This means that the net downward force is balanced by the net upward force.

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\( \large \mathfrak{Answer : }\)

The S.I unit of velocity is m/s and since it's velocity it needs to be in a particular direction, therefore most appropriate answer is :

B. She is running west at 2.4 m/s

Answer:

True

Explanation:

Answer:

upthrust or BUOYANT FORCE =Vdg

volume=LWH

upthrust=(4cm×5cm×2cm)×1g/cm²×g

upthrust=40cm³×1g/cm³×g

upthrust=40gf or 0.04kg×10m/s²=0.4N

weight of the displaced liquid is upthrust.

so mass=40g or 0.04kg

upthrust=40gf or 0.4Nand mass of the displaced liquid=40g or 0.04kg

please mark brainliest, hope it helped

The initial velocity v0x, such that the particle will have the same x-coordinate at t = 4.10 s as it had at t = 0

Vx(t) = -2.40 t + 1.65t^2 + Vo

X(t) = -1.20 t^2 + 0.55 t^3 + Vo t + Xo

At t =0

X(t) = Xo

At t = 4.30:

X(4.30) = -1.20(4.30)^2 + 0.55(4.30)^3 + Vo(4.30) = Xo

21.54085 + 4.30 Vo = Xo

So Vo = (Xo - 21.54085)/4.30

Vo = -5.0095 m/s <===========Answer to part A

Vx(t) = -2.40 t + 1.65t^2 + Vo

V(4.30) = -2.40(4.30) + 1.65(4.30)^2 - 5.0095

V(4.30) = +15.179 m/s

The pace is the directional speed of an item in motion as a demonstration of its price of alternate in the role as observed from a specific body of reference and as measured via a particular widespread of time (e.g. 60 km/h northbound). speed is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of our bodies.

Velocity is a bodily vector amount; each significance and route are needed to define it. The scalar absolute value (significance) of speed is known as velocity, being a coherent derived unit whose quantity is measured inside the SI (metric device) as meters in step with second (m/s or m⋅s−1). as an example, "5 meters in step with 2d" is a scalar, whereas "5 meters consistent with 2nd east" is a vector. If there is a trade-in velocity, route, or each, then the object is stated to be present process an acceleration.

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Complete Question:

The acceleration of a particle is given by ax(t) = -(2. 10 m/s2) + (2. 98 m/s3)t. (a) find the initial velocity v0x, such that the particle will have the same x-coordinate at t = 4.10 s as it had at t = 0

Answer:

potential energy is transformed into kinetic energy

Answer:

10 million joules or 10,000 KJ

Explanation:

Work= Force x Displacement

convert 5km into meters -5km=5000m

W= 2000N x 5000m

w=10,000,000 Joules

or 10,000KJ

Answer:

2^3

Explanation:

bdsb

When a car moves around a circular path of a constant radius at a constant speed, the direction of the velocity of the car when it is at the top of the circular path is downwards.

Explanation:

An object moving in a circular path at a constant speed is said to be in uniform circular motion. The velocity of an object moving in a uniform circular motion is tangential to the circle and its direction is always changing. However, the speed of the object remains constant. The direction of the velocity of an object at any point on a circular path can be found by drawing a tangent to the circle at that point.

If the object is moving clockwise, the velocity is tangent to the circle and pointing towards the left. If the object is moving anticlockwise, the velocity is tangent to the circle and pointing towards the right.

Therefore, when the car is at the top of the circular path, the direction of the velocity is downwards.

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