If a child applies a 3.00 N force for 2.00 m in the same direction the car is already moving, how much work is done on the car?

Answer:

A) is one third

because according to Boyle's law pressure is inversely proportional to the volume

Energy cannot be generated or destroyed; it can only be changed from one form of energy to another, according to the rule of conservation of energy. This implies that a system always possesses the same amount of energy, barring external energy addition.

According to the rule of conservation of energy, energy cannot be generated or destroyed. It can only be changed from one form to another, though. It is simply changed from a form that we can use to one that is less useful. Energy problem as a result of this

Energy efficiency is necessary to save expenses and extend the life of the resources.

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Answer:

See below

Explanation:

X component = 120 * cos 35° =  98.298 m/s

Y component = 120 * sin 35° = 68.829 m/s

Any object launched into space with only gravity acting on it is referred to as a projectile. Gravity is the main force affecting a projectile. The x and y components of the velocity vector are 98.298 m/s and 68.829 m/s.

When a particle is thrown obliquely close to the Earth's surface, it travels along a curving route while experiencing constant acceleration. Always pointing in the direction of the Earth's center is this curving path. Such a particle's motion is referred to as projectile motion, and its trajectory is known as the projectile's trajectory.

The components of the projectile are:

X component = 120 × cos 35° =  98.298 m/s

Y component = 120 × sin 35° = 68.829 m/s

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Answer:B. They are less dense near the top of the atmosphere

Explanation:

Answer:

The formula for force according to Newton's second law of motion is F=ma or force for an object to move is equal to mass times acceleration.

Acceleration or average acceleration defined as change in velocity per time.

F=ma

F=1.2x10³kg*(20m/s)(1/5s)=4.8x10³  Newtons

Explanation:

fthat's not the answer then i'm sorry

If you thrust a magnet into a closed loop of wire, the loop will have current in it. So the correct option is B.

A magnet is a body with a magnetism that can attract different irons that can be given naturally or artificially. Magnets can have their magnetic field continuously and this field can attract materials or repel them, this will depend on the magnetic permeability of the compound. The magnetic field of the images will be oriented towards the south pole and the north pole and each of these will be attracted by their opposites.

Not all magnets have permanent magnetism, this depends on whether they are going to be magnetized to be permanent or if they will only have temporary functionality.

By pushing a magnet in a closed circuit of wire, a magnetic field will be generated in which a current will flow in the turns of wire.

Therefore, we can confirm that the correct option is B. have current in it.

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Answer:

The stone is accelerating at 9.8 m/s².  If we multiply that by three seconds, we get 29.4 m/s.

Answer:

it is being accountable basically like some one can relive and trust that you'll do what you say your going to do

Answer:

3kms  per minute

Explanation:

You divide the distance to the time.

Answer:

3 kilometers a minute

Explanation:

im not sure but i hope it helps

It takes approximately 0.00559856 seconds for a light signal to travel between the two asteroids.  

The time it takes for a light signal to travel between two asteroids, we need to know the speed of light and the distance between the two asteroids. Using the speed of light (c) = 299,792,458 meters per second, we can use the formula:

time = distance / speed of light

Putting in the values we have:

time = 1600 km / 299,792,458 meters per second

time ≈ 0.00559856 seconds (rounded to four decimal places)

Therefore, it takes approximately 0.00559856 seconds for a light signal to travel between the two asteroids.  

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Answer:

Its temperature

Explanation:

Answer:

The stars age

Explanation:

As stars age, they run out of hydrogen to burn, decreasing the amount of energy they give off. So the younger stars can look bluer while older ones look more red.

Hope this helps :3

Answer:

Yes it is

Explanation:

Movement. Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

The bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 degrees Celsius, will be larger than 1.0 cm.

When a scuba diver exhales a bubble underwater, the bubble undergoes changes in size due to the variation in pressure and temperature between the depths and the surface. As the bubble rises towards the surface, the surrounding water pressure decreases, causing the bubble to expand. Additionally, the temperature of the water also affects the bubble's size.

In this scenario, the initial diameter of the bubble is given as 1.0 cm at a depth of 50 meters in a freshwater lake with a temperature of 10 degrees Celsius. As the bubble ascends towards the surface, the water temperature increases to 20 degrees Celsius. According to the ideal gas law, the volume of a gas is inversely proportional to the product of pressure and temperature. As the temperature increases, the volume of the gas also increases.

Therefore, as the bubble reaches the surface where the water temperature is higher, the bubble's diameter will be larger than the initial 1.0 cm diameter. The exact increase in diameter can be calculated using the ideal gas law and considering the change in temperature and pressure throughout the ascent.

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Answer:B

Explanation:

If the driver suddenly slams the brakes, inertia of the water will cause it to spill over to side 2. option (B) is correct.

Newton's first law of motion, sometimes referred to as the law of inertia, asserts that: Until an outside force acts on an object, it will remain in either a condition of rest or motion.

When the driver suddenly slams the brakes,  the car stops suddenly but water inside the cap still remains in inertia of motion. So, the water spill over forward side which is side 2.

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Topic: The Formation of Black Holes: Unveiling the Cosmic Gravity Abyss

Explanation: Black holes, enigmatic cosmic entities, are formed through the gravitational collapse of massive stars. When a star exhausts its nuclear fuel, it undergoes a cataclysmic explosion known as a supernova. During the supernova event, the star's core collapses under its immense gravitational force, leading to the formation of a black hole.

The collapse occurs when the core's mass exceeds a critical threshold, resulting in an intense gravitational pull. This gravitational force becomes so strong that it overcomes all other forces, including those that typically support the structure of matter. As a result, the core collapses to a point of infinite density called a singularity, surrounded by an event horizon from which nothing can escape, not even light.

The formation of black holes exemplifies the extreme nature of gravity and the profound effects it can have on the fabric of the universe. Understanding the processes behind black hole formation enhances our knowledge of stellar evolution, gravity's influence on massive objects, and the fundamental laws governing the cosmos.

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Answer:

"Velocity always perpendicular to position vector" means that the distance from the particle of interest to the origin never changes. The question is whether such motion always traces out a circle. Counterexample: consider a plane pendulum with its pivot at the origin.

Answer:

hey from what I know the answer is C

Explanation:

When a book is kept on a table , weight (gravitational force) of book acts on table vertically downwards and as a reaction of weight , table also exerts an equal and opposite ( upward) force on book .

The distance can be calculated as 490m .

We are given that,

Time = t = 10s

Initial velocity = u = 0

Acceleration due to gravity= g = 9.8m/s²

Suppose v is the final velocity. Where "t" stands for time, "s" for distance, "u" for starting velocity, and "g" for the acceleration brought on by gravity. Currently applying the second Newtonian equation for motion,

s = ut + 1/2 gt²

Putting the values in above equation ,

s = 0 + 1/2 (9.8)(10)(10)

s = 1/2 × 980

s = 450m

In this case, the distance is 490 m.

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Answer:

The answer is C. Series.

Because of their different masses, the heavy lead ball and the light aluminium ball of the same size that roll down an incline have distinct kinetic and potential energies.

The peak of kinetic energy occurs right after you stop exerting effort to start the process. Either the top of the first hill or the ball's highest point on the second hill could experience the most gravitational potential energy.

The potential energy will be converted to kinetic energy if they are rolling down the slope or begin to roll down the hill due to gravity.

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Answer:

An object in motion will remain in motion until it experiences an unbalanced force.

Explanation:

This is part of Newton's first law. An unbalanced force is there to offset the object in motion, such as a ball versus a wall. A wall will stop the ball from moving.

The net force exerted on the car during the 10 second time interval was: 750,000 N.

Here's why: Force is the result of the interaction between two objects, according to Newton's second law, which states that F = ma, where F is the force, m is the object's mass, and a is its acceleration. When calculating force, we must first convert velocity to acceleration, which is accomplished by dividing the change in velocity by the time interval.

We have a = (25 - 0) / 10 = 2.5 m/s² because the car speeds up from a standstill to 25 m/s in 10 seconds. We can determine the net force acting on the car using Newton's second law. Because the car's mass is 3000 kg and its acceleration is 2.5 m/s², the net force exerted on the car is:F = maF = 3000 kg × 2.5 m/s²F = 7500 N

Therefore, the net force exerted on the car is 7500 N.

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(a) the angle the sailor should steer his ship is 53°.

(b) The magnitude (speed) of the resultant velocity is approximately 5.26 ms-1.

(a) Since the wind is blowing towards the South of East, the course the sailor should steer the ship in order to travel directly East is given by the bearing of the vector sum of the wind and the boat's velocity vector. We need to find this bearing.

From the diagram below, the resultant vector, R, is the vector sum of the boat's velocity vector, B, and the wind vector, W. The direction of the R is given by the bearing of the line QR.

Since PR = 6 and PQ = 8, the angle between PQ and QR is given by:

tan θ = PR / PQ

= 6 / 8

= 0.75θ

= 37° (to the nearest degree)

Therefore, the bearing of the resultant vector R is 90° - θ = 90° - 37°

= 53° (to the nearest degree).

Hence, the angle the sailor should steer his ship is 53°.

(b) The magnitude of the resultant velocity can be found by finding the magnitude of the resultant vector R.

From the diagram above,

\(cos \theta = PQ / PR\cos  \theta \\= 8 / 6\\\cos \theta = 1.333R^2 \\= PQ^2 + PR^2 - 2PQPR\\\cos  \theta R^2 = 8^2 + 6^2 - 2(8)(6)\\\cos  \theta R^2 = 64 + 36 - 96\\\cos  \theta R^2= 100 - 96(1.333)\\R^2 = 100 - 127.68\\R = \sqrt{(-27.68)}\\R = 5.26\)ms-1 (to 3 significant figures)

Therefore, the magnitude (speed) of the resultant velocity is approximately 5.26 ms-1.

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The magnitude (speed) of the resultant velocity is 10 m/s.

To find the angle (as a bearing) the sailor should steer his ship to and the magnitude (speed) of the resultant velocity, we can use vector addition.

Let's break down the given information:

Boat's speed in still water (no wind): 8 m/s.

Wind's direction: 150° (measured clockwise from the North).

Wind's magnitude: 6 m/s.

a) To determine the angle (bearing) the sailor should steer his ship to, we need to find the resultant direction by adding the vectors representing the boat's velocity and the wind's velocity.

Since the wind's direction is 150°, and the boat wants to travel east (90°), the resultant direction should be the sum of

these two angles.

Resultant direction = 150° + 90° = 240° (measured clockwise from the North).

Therefore, the sailor should steer his ship to a bearing of 240°.

b) To find the magnitude (speed) of the resultant velocity, we need to calculate the magnitude of the resultant vector by using the Pythagorean theorem.

Let the magnitude of the resultant velocity be V.

Using the Pythagorean theorem:

V^2 = (Boat's velocity)^2 + (Wind's velocity)^2

V^2 = (8 m/s)^2 + (6 m/s)^2

V^2 = 64 m²/s² + 36 m²/s²

V^2 = 100 m²/s²

Taking the square root of both sides:

V = √(100 m²/s²)

V = 10 m/s

Therefore, the magnitude (speed) of the resultant velocity is 10 m/s.

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Answer:

The magnetic field is doubled.

Explanation:

What happens to the strength of the magnetic field if one more 1.5 v dry cell is added?

The magnetic field due to a current carrying conductor is directly proportional to the current flowing in the wire.

If we connect one more battery of 1.5 V so the voltage is doubled and according to the Ohm's law, as the resistance of wire is constant, so the current in the wire is also doubled.

When the current doubles, the magnetic field produced by the wire is also  doubled.

Answer:

360 degrees is one full rotation starting at zero

it take 2 s  to the flag to rotate once in a full circle  with 3 rad/s of angular velocity.

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

In this problem we have to calculate time, but the angular velocity id not given.

Consider the angular velocity is 3 rad/s.

Given,

Angular displacement θ = 2π

angular velocity ω = 3 rad/s

Time t = ?

Time = θ/ω

Time = 2π/3 rad/s = 2 s

Hence the answer is 2s.

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Answer:

5.00 × 10^14 Hz

Explanation:

The wavelength of the light in the medium can be calculated by using the formula:

λ = v / f

Where;

λ = wavelength (m)

v = speed of light

f = frequency (Hz)

From the provided information, λ = 600 nm (600 × 10^-9m), v = 3 × 10^8m/s.

λ = v / f

λ = 3 × 10^8/600 × 10^-9

λ = 0.005 × 10^(8+9)

λ = 0.005 × 10^17

λ = 5.00 × 10^14 Hz

The frequency of the light in the medium is 5.00 × 10^14 Hz

answer:

9

Explanation:

add them all together then divide

Answer:

1.The incident Ray,the refracted Ray and the normal at the point of incidence,all three lies in the same plane

2.the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a pair

Answer:

we have to apply force to move something things wants to save their position and if we want to change it

we have too apply force

Answer:

we have to apply

them to have a answer

Answer: The answer would be 454 miles.

Explanation: You multiply the average speed by time travelled