If two vehicles approach an uncontrolled intersection at about the same time, who must yield?.

It will take the lightbulb 2875 seconds to use  2.3×10⁵J of energy.

Power is the amount of work completed in a given amount of time, or time spent working. The joules per second (J/s)-based SI unit of power is the Watt (W).

Given,

Power (P) = 80 J/s

Energy (E) = 2.3×10⁵ J

Time (t) = ?

The pace at which energy is utilized is a straightforward definition of power. Power can be mathematically stated as:

Energy x time equals power

P = E/t

We can calculate the time it takes for the bulb to use 2.3 105 J using the formula above. This is attainable as follows:

Power (P) = 80 J/s

Energy (E) = 2.3×10⁵ J

Time (t) = ?

Power = Energy / time

P = E/t

80 = 2.3×10⁵ /t

80 × t = 2.3×10⁵

Divide both side by 80

t = 2.3×10⁵ / 80

t = 2875 s

As a result, it will take the lightbulb 2875 seconds to use  2.3×10⁵J of energy.

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Complete question is "A light bulb consumes energy at a rate of 80joules per second . How long in seconds will it take for the light bulb to consume  2.3×10⁵in energy?".

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40.47 m/s is the speed of the arrow leaving the bow. When 0.0850 kg arrow fired horizontally, and If bowstring exerts average force of 89.0 N on the arrow over distance of 0. 782 m.

The primary indicator of object's position and speed is its velocity. It is distance that object travels in one unit of time. Displacement of item in one unit of time is definition of velocity.

By Newton's second law of motion,

F = ma

m is the mass of the arrow (kg) = 0.0850 kg

a is the acceleration of the arrow (m/s²)

F is the force applied (N) = 89.0 N

F= ma

a = F/m

a = 89.0/ 0.0850

∴ a= 1,047.059 m/s²

Now, object have acceleration, and the object will move in non-uniform motion. so the formula applied is:

[tex]v_{t}[/tex] = [tex]v_{0}[/tex] + at

[tex]v_{t}^{2}[/tex] = [tex]v_{0}^{2}[/tex] + 2×a×d

∴ d = [tex]v_{0}[/tex]×t +1/2× a ×t²

here,

[tex]v_{0}[/tex] = initial speed (m/s) = 0 m/s (arrow stationary in bowstring)

[tex]v_{t}[/tex] = final speed (m/s)

a = acceleration (m/s²) = 1,047.059 m/s²

t = interval (s)

d = distance (m) = 0.782 m

[tex]v_{t}^{2}[/tex] = [tex]v_{0}^{2}[/tex] + 2×a×d

[tex]v_{t}^{2}[/tex] = 0² + 2 × 1,047.059 × 0.782

 [tex]v_{t}^{2}[/tex] = 1637.6

[tex]v_{t}[/tex] = [tex]\sqrt{1637.6}[/tex]

[tex]v_{t}[/tex] = 40.47 m/s

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The transmitters operate between 190 and 535 kHz, have a range of at least 15 miles, and have a power of less than 25 watts.

The localizer course is typically 5°, which is fairly narrow. High needle sensitivity follows from this. When the airplane is 2.5° to either side of the centerline with this course width, a full-scale deviation is visible. This sensitivity enables precise alignment to the runway for landings.

Operating between the frequencies of 108.10 MHz and 111.95 MHz, the localizer transmitter uses one of the 40 ILS channels. Signals give the pilot direction to the middle of the runway.

An instrument landing system is a precise runway approach device that uses two radio beams to give pilots horizontal and vertical guidance as they approach the landing. The glideslope (GS) defines the proper vertical descent profile, while the localizer (LOC) offers azimuth guidance.

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1.When two objects collide, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to accelerate (gain speed) and another object to slow down (lose speed).

2. The effect of the forces experienced on the objects during the collision is different if the masses of the objects are different. The same  force causes different changes in velocity for objects with different masses. An object with a smaller mass has a greater change in velocity when the same force is applied.

A collision means that two objects collide with each other for a very short time. In other words, a collision is the interaction of two masses in a very short period of time, where the momentum and energy of the colliding masses change.

The law of conservation of momentum usually applies to collisions between two masses, but some collisions may involve kinetic energy. Depending on the conservation of energy there can be two types of conservation:

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The thermal energy was generated by friction is 180490.52J.

Molecules moving within an item or substance are referred to as thermally moving. The sun is the main source of thermal energy in our solar system, but every material possesses some form of thermal energy. Heat is a flow of thermal energy that occurs when energy is transferred from one substance or object to another.

Given,

Initial speed = 114km/h = 114000/3600 = 31.66 m/s

Height = 25m

[tex]E_{intial} = E_{final}[/tex]

mg[tex]y_{i}[/tex] + 1/2m[tex]v^{2} _{i{} }[/tex] = mg[tex]y_{f}[/tex] +1/2m[tex]v^{2} _{f{} }[/tex]

Solving [tex]y_{f}[/tex] we have,

[tex]y_{f}[/tex] = m(g[tex]y_{i}[/tex] + 1/2m[tex]v^{2} _{i{} }[/tex]-1/2m[tex]v^{2} _{f{} }[/tex])

[tex]y_{f}[/tex] = (0+ 1/2 (114×1000/60×60)²-0)/9.8

[tex]y_{f}[/tex] = h = 50.94m

loss of energy = mg (50.94 - 25)

loss of energy = 710× 9.8× 25.94

loss of energy = 180490.52J.

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Answer:

Pressure = 223 kPa

Explanation:

Given:

p₁ = 112 kPa = 112 000 Pa

t₁ = 35°C;    T₁ = 273 + 35 = 308 Pa

t₂ = 340°C;    T₂ = 273 + 35 = 613 Pa

V - const

___________

p₂ - ?

Charles' law:

p₁ / T₁ = p₂ / T₂

The pressure:

p₂ = p₁·T₂ / T₁

p₂ = 112 000·613 / 308 ≈ 223 000 Pa   or  p₂ = 223 kPa

We first apply the data to the problem.

Data:

Now, we convert the minutes to hours.

Conversion:

Then, we apply the formula that is.

Formula:

Finally we develop the problem.

Developing:

The distance traveled by the kangaroo is 30 kilometers.

Mass refers to a body of matter's resistance to changing its speed or location in response to the application of a force.

In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter.It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force.The change caused by an applied force is smaller the more mass a body has.

The work done to place the box at tree house=350 J.

The distance from ground to tree house =4.0 m and g = 9.8/8²

E =mgh

m = 350 J / (9.8/8²* 4.0m)

m=8.929kg

Hence the mass of the box is 8.929kg

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It  would be half of (1/2) acceleration due to gravity on an object near the surface of that planet compare to our g.

Gravity on the planet (g') = [tex]\frac{GM}{R'^{2} }[/tex] = G(ρx [tex]\frac{4}{3}[/tex][tex]\pi[/tex][tex]R^{3}[/tex])/[tex]R'^{2}[/tex]

Where R' is the radius of the planet.

g' = [tex]\frac{4}{3}[/tex][tex]\frac{\pi GPR'}{1}[/tex]

gravity on the Earth (g) = G[tex]M_{E}[/tex]/RE

                                      = G([tex]\frac{P 4/3\pi R_{E} ^{3} }{R_{E^{2} } }[/tex])

                                  g  =  4/3 [tex]\pi[/tex]GP[tex]R_{E}[/tex]

Now, g'/g = R'/[tex]R_{E}[/tex] =  [tex]R_{E} 2[/tex]/[tex]R_{E}[/tex] = 1/2

              g' = 1/2

it would be half of g.

Acceleration is defined as  the rate of change of velocity with respect to time.  Acceleration is a vector quantity because it has both magnitude and direction. It is also the second derivative of position with respect to time or  the first derivative of velocity with respect to time. The SI unit of acceleration is  as [tex]m/s^2[/tex].

An object is said to accelerate when its velocity changes. A change in the speed of an object can be an increase or decrease in speed or a change in  direction of motion. Some examples of acceleration are a falling  apple, the moon orbiting  the Earth, or  a car stopping at a traffic light.

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The maximum height travelled by the ball before returning to the ground is 8.62 m.

The maximum height travelled by the ball before returning to the ground is calculated by applying the following kinematic equation as shown below.

H = (u²sin²θ) / 2g

where;

H = (26² (sin 30)²) / (2 x 9.8)

H = 8.62 m

Thus, the maximum height travelled by a projectile depends on the initial velocity and angle of projection.

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What Fiona did, so her friend could find the stars was to give her friends knowledge about the contents of the sky, such as the shape of planets and stars. Then when you want to see the stars, you have to stay away from light pollution, so the stars can be seen clearly.

Stars are celestial bodies that emit light caused by nuclear fusion reactions that produce energy that occurs in their cores. It should be noted that 'pseudo stars' are not stars, but planets that reflect light from other stars and appear to glow in the sky like a star. A planet or planetary star is an astronomical body orbiting a star or stellar remnant that is massive enough to have its own gravity.

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The magnitude of the change in momentum is twice the initial momentum 2mV.

Momentum is the same as the mass of an item elevated by using its pace and is equal to the pressure required to bring the item to a stop in a unit length of time.

Calculation:-

mass of the ball = m

Let the initial velocity coming the vertical wall is = +v

  Final velocity bouncing back from the wall = - V

momentum = mv

Change in momentum = m ( final velocity - initial velicity)

                                      =  m ( -V - V)

                                       = - 2mV

Only magnitude = 2mV.

Linear momentum, translational momentum, or true momentum is manufactured from the mass and speed of an item. it's far a vector quantity, possessing a magnitude and a course. If m is an object's mass and v is its velocity. Momentum is a dimension of mass in movement. How tons mass is in how much movement. additionally, it is given the symbol p.

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Area in physics can be found by division of the area into simple figures such as triangles, rectangles and trapezoids and offsets from a straight line.

Area is a measure of how much space is there inside a shape and calculating the area of a shape or surface can be useful in everyday life.

The amount of surface a two-dimensional shape can cover which is measured in square units is called area and the SI unit of area is the square meter.

Area = length x breadth and  Area = π × radius × radius - formulas can be used for finding area of different quadrilaterals.

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A heavy weight suspended within a moving box needs to overcome inertia, resulting in a slight delay in the motion of the weight after the box moves. Option B.

The principle underlying the construction of a seismometer is to have a heavy weight suspended from a spring on a pedestal or inside a movable box. A seismograph is an instrument that records and measures the details of an earthquake. A seismograph uses a seismograph to record data.

Elastic deformation bends an object, whereas repulsion returns it to its original shape. This instrument is nothing more than an oscillating rod or pendulum that begins to vibrate when a tremor occurs. The vibration system has a pin. The pen records seismic waves on a sheet of paper that moves underneath. By studying these waves scientists can create a complete map of earthquakes.

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When Jasper uses the same amount of force to move a tennis ball and a bowling ball, d)the tennis ball will have a greater change in motion.

Newton's second law states that an object's net force is equal to the sum of its mass and acceleration.

F = ma is the formula, where F denotes force, m denotes mass, and a denotes acceleration.

When the force F is constant and we rearrange the equation, we get acceleration as a = F/m. We know that acceleration is inversely linked to the mass m. Greater mass results in smaller acceleration, and conversely, smaller mass results in greater acceleration.

We know that mass of bowling ball is more than tennis ball.

Tennis ball > bowling ball will have the highest rate of acceleration since the relationship between acceleration and mass is inverse.

It follows that tennis balls will accelerate their change of direction more quickly than bowling balls.

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The ring would finish at last in the race down the incline.

Incline is a a plane surface tilted at some angle from the horizontal.

The moment of inertia of the ring = [tex]mr^{2}[/tex]

The moment of inertia of the disc = ( [tex]mr^{2}[/tex] ) / 2

The moment of inertia of the solid sphere = 2( [tex]mr^{2}[/tex] ) / 5

Since the moment of inertia is the resistance to rotational motion, we see that the object with the smallest moment of inertia will reach the bottom first.

The gain in total kinetic energy is equal to the loss in gravitational potential energy, which in turn is the same for all the objects and is equal to 'mgh'

where h is the height of the inclined plane.

So the order of reaching the bottom is Sphere, disc and ring.

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Inelastic collision The total momentum of the system prior to the collision was 22 361 kg*m/s, and as momentum is conserved, it is also the total momentum of the system following the collision.

The system's overall momentum is distributed equally among all of the automobiles due to their equal mass. In an inelastic collision, as opposed to an elastic impact, internal friction prevents the conservation of kinetic energy. Is called inelastic collision.

Momentum, also known as linear momentum, translational momentum, or simply momentum in Newtonian physics, is the result of an object's mass and velocity. It has a direction and a magnitude, making it a vector quantity.

final to original total momentum is equal to 22361/22361, which is 1.

therefore beginning and ultimate momentum are equal.

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Answer:

Explanation:

b

Answer: The correct answers are B and C. :)

Explanation:

Unless the above assumptions are clear, the initial and final energies are equal.

Kinetic energy is the form of energy that an object or a particle possess due to its motion. If work, that transfers energy, is done on an object by applying a net force, the object accelerates and thereby gains kinetic energy. Kinetic energy is a property of a moving object or particle and depends on its motion as well as its mass. The type of motion may be translational (or motion along a path from one place to another), rotational, vibrational, or any combination of motions. Translational kinetic energy is one-half the product of its mass (m) and the square of its velocity (v) or 1/2mv².

Given,

Initial and final velocities = v₁ and v₂

Initial kinetic energy = [tex]\frac{1}{2} mv_{1} ^{2}[/tex]

Final kinetic energy = [tex]\frac{1}{2} mv_{2} ^{2}[/tex]

Gravitational potential energy is calculated = mgh

As the assumptions are not clear, this question assumes no air resistance. As a result, no energy is consumed by work.

then

Initial Kinetic Energy = Final Kinetic Energy

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The subject tested alone would yield better findings and higher alpha values than the subject evaluated in a lab with several pupils.

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Given that A was stiffer than B (KA > KB), the force given to both springs is the same for A, whose spring constant is higher than B's but whose expansion is smaller, and whose work will thus be less than B's.

The equilibrium length of a perfect spring exists. When a spring is squeezed, a force pushing each end apart has a magnitude proportional to the length drop from the equilibrium length.

Hooke aimed to show how a spring's elasticity and the forces acting on it are related. According to Hooke's Law, a spring's extension is proportional to the load placed on it. As long even as load does not exceed a material's elastic limit, a variety of materials abide by this rule.

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The net displacement of a point on the blade's rim as a result of the deceleration is 10.0 in. or 0.254 m..

In reality, the term "deceleration" refers to an acceleration that has been reversed. We are aware that deceleration is the rate at which an object slows down and that acceleration is the pace at which an object accelerates. For instance, when we apply the brakes while driving, we are employing the benefits of deceleration to lower the speed of the car.

When we sense ourselves going forward in relation to the car while driving, we are decelerating. Deceleration in this context is a specific case of acceleration that only applies to moving things. It is hence the speed at which an object slows down.

Since acceleration must be reported as both a magnitude and a direction, it is a vector. Whenever there is one-dimensional motion.

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If a person is forced to utilize self-defense, the offensive techniques that should be recommended are as follows:

I would advise them to employ the following defense strategies:

Based on the films, the move(s) that appear to be the most successful for the offense in a circumstance requiring self-defense are to target the problem rather than the person.

An aggressive competitive strategy is a form of company strategy that involves actively pursuing industry changes.

Companies that go on the offensive typically make acquisitions and invest extensively in R&D and technology in order to remain ahead of the competition.

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If A ball is at rest, the moving ball's velocity vector must point to the center of the stationary ball.

A velocity vector shows the rate of change in an object's position. The magnitude of a velocity vector represents an object's speed, whereas the vector's direction represents an object's direction. Velocity vectors can be added or removed in accordance with the principles of vector addition. the velocity vectors' length.

If we just state that a car is moving at 70 km/h, we have not fully described its motion because we have not stated the direction in which it is moving. Thus, a vector quantity such as velocity is an example.

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Answer: the coefficient would be either 4 or 5

Explanation:

The infrared image would reveal radiation coming from all around Earth, whereas the ultraviolet image would only show artificial sources like lighting.

There are numerous uses for infrared. Heat sensors, thermal imaging technology, and night vision gear are some of the most popular. Infrared light is used in both wired and wireless communications and networking operations.

To avoid Earth's atmosphere and obtain a clearer view of the planets, stars, and galaxies that we are studying, space telescopes are primarily launched into orbit. Only some light can enter our atmosphere because it acts as a barrier, blocking all other light.

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Answer:

for identifying elements in a sample

for determining the distance and velocity of galaxies

for producing neon lights

for determining types of chemical bonds

for use in medical imaging devices

Explanation:

I hope this helps. :)

When it will pass through our Earth, it will contain the whole of our earth as its gravitational field is so high.

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When it will pass through our Earth, it will contain the whole of our earth as its gravitational field is so high.

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