A motorcycle traveling along a straight road increases its speed from 34.9 ft/s to 45.8 ft/s in a distance of 194 feet. If the acceleration is constant, how many seconds of time elapses while the motorcycle moves this distance?

Answer:

27.1 m/s

Explanation:

Given that at a race car driving event, a staff member notices that the skid marks left by the race car are 9.06 m long. The very experienced staff member knows that the deceleration of a car when skidding is -40.52 m/s2.

Using third equation of motion,

V^2 = U^2 + 2aS

Since the car is decelerating, the final velocity V = 0

Substitute all the parameter into the equation above,

0 = U^2 - 2 * 40.52 * 9.06

U^2 = 734.22

U = \(\sqrt{734.22}\)

U = 27.096

U = 27.1 m/s  approximately

Therefore, the staff member can estimate for the original speed of the race car to be 27.1 m/s if it came to a stop during the skid

Maxwell equations are a set of four equations that describe the behavior of electric and magnetic fields. They are named after James Clerk Maxwell, who formulated them in the 19th century.

The equations show how electric and magnetic fields interact with each other and with charges. The equations include Faraday's law of induction, Ampere's law, Gauss's law for electricity, and Gauss's law for magnetism. The displacement current was introduced by Maxwell to explain the behavior of electric fields in changing magnetic fields.

This current was necessary to satisfy Ampere's law, as the traditional current did not account for this behavior. The displacement current is equal to the rate of change of the electric field, thus allowing the total current to satisfy Ampere's law.

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Answer:

5.61s

Explanation:

\(\pink{\frak{Given}}\begin{cases} \textsf{ A ball is dropped off a tall building and accelerates at 9.8 m/s$^2$ .}\\\textsf{It reaches the ground at a speed of 55 m/s .} \end{cases}\)

And we need to find out the time taken by the ball to reach the ground .

Here we can use the First equation of motion , namely ;

\(\sf \longrightarrow v = u + at \)

where the symbols have their usual meaning . Now substituting the respective values , we have,

\(\sf \longrightarrow 55m/s = 0m/s + 9.8 m/s^2(t)\\ \)

\(\sf \longrightarrow 55m/s = 9.8m/s^2(t)\\ \)

\(\sf \longrightarrow t = \dfrac{55m/s}{9.8m/s^2}\\\)

\(\sf \longrightarrow \boxed{\bf time = 5.61 s }\)

Answer:

Cold to hot.

Explanation:

Heat can never flow from cold to hot, heat transfers itself from hot to cold.

Answer:

Option D. 5.45 Ω

Explanation:

From the question given above, the following data were obtained:

Resistance 1 (R₁) = 10 Ω

Resistance 2 (R₂) = 20 Ω

Resistance 3 (R₃) = 30 Ω

Voltage (V) = 120 V

Equivalent resistance (R) =?

The equivalent resistance can be obtained as follow:

1/R = 1/R₁ + 1/R₂ + 1/R₃

1/R = 1/10 + 1/20 + 1/30

Find the least common multiple (lcm) of 10, 20 and 30. The result is 60

Divide 60 by each of the denominators and multiply by their numerators respectively. We have:

1/R = (6 + 3 + 2)/60

1/R = 11/60

Invert

R = 60/11

R = 5.45 Ω

Thus, the equivalent resistance in the circuit is 5.45 Ω

Both blocks experience the same largest force (1 N) as they are attached to the same spring with the same compression distance.

However, the small block experiences the largest acceleration (5 m/s²) compared to the large block (2.5 m/s²).

In both experiments, a small block (200 g) and a large block (400 g) are attached to a spring with a spring constant k = 20 N/m. After the spring is compressed 5 cm, the blocks are released. To determine which one experiences the largest force and which one the largest acceleration, we need to calculate the spring force and acceleration for both blocks.

Step 1: Calculate the spring force (F) using Hooke's Law.
F = k * x
where F is the spring force, k is the spring constant, and x is the compression distance.

For both blocks, k = 20 N/m and x = 5 cm = 0.05 m.

F = 20 N/m * 0.05 m
F = 1 N

Step 2: Calculate the acceleration (a) for each block using Newton's second law.
F = m * a
where F is the spring force, m is the mass of the block, and a is the acceleration.

For the small block (200 g = 0.2 kg):
1 N = 0.2 kg * a
a = 1 N / 0.2 kg
a = 5 m/s²

For the large block (400 g = 0.4 kg):
1 N = 0.4 kg * a
a = 1 N / 0.4 kg
a = 2.5 m/s²

In conclusion, both blocks experience the same largest force (1 N) as they are attached to the same spring with the same compression distance. However, the small block experiences the largest acceleration (5 m/s²) compared to the large block (2.5 m/s²).

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Answer:  The equation relating to mass and weight is Wo = mog

Explanation: Wo = weight of the object in newtons

mo = mass of the object in kilograms

g = acceleration due to gravity (9.81 m/s2 on Earth)

Hope this was helpful

A. Different magmas generated in various places are isolated from one another. This assertion is untrue since magmas can interact with one another and mix.

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Answer:

What I put- This will affect animals, the earth, and could affect future generations. Plastic also gets into the oceans causing sea creaters die by eating it.

Sample Answer- Problems that arise from the unavailability of natural resources and from environmental hazards will affect the generations that follow us.

Explanation:

Answer:

This will affect animals, the earth, and could affect future generations. Plastic also gets into the oceans causing sea creaters die by eating it.

Explanation:

1a. The bullet's speed (v_bullet) can be expressed as v_bullet = √[((m + M) * g * μk * d * 2) / m].

1b. The speed of a 8.0 g bullet that, when fired into a 12 kg stationary wood block, causes the block to slide 4.0 cm across a wood table is approximately 616 m/s.

1a. We can use the conservation of momentum and the work-energy principle to find an expression for the bullet's speed. The initial momentum of the system is equal to the final momentum of the system:

m*v_bullet = (m + M)*v_final

We can now use the work-energy principle, which states that the work done on the system is equal to the change in its kinetic energy:

W = ΔK = (1/2)(m + M)*v_final² - (1/2)m*v_bullet²

The work done by friction is:

W = -μk * (m + M) * g * d

Substituting the work done by friction into the work-energy equation and solving for v_bullet:

v_bullet = √[((m + M) * g * μk * d * 2) / m]

1b. We can now plug in the given values to find the speed of the 8.0 g bullet:

m = 0.008 kg (converted from grams to kilograms)
M = 12 kg
μk = 0.20
d = 0.04 m (converted from centimeters to meters)
g = 9.81 m/s² (acceleration due to gravity)

v_bullet = √[((0.008 + 12) * 9.81 * 0.20 * 0.04 * 2) / 0.008]

v_bullet ≈ 616 m/s

The speed of the 8.0 g bullet is approximately 616 m/s.

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To calculate the volume of the balloon, we need to use the concept of buoyancy. The buoyant force acting on the balloon is equal to the weight of the air and helium displaced by the balloon. The volume of the balloon is approximately 111.82 m³.

We can assume that the volume of the balloon is the same as the volume of the air and helium it contains.
Let's first calculate the weight of the air and helium in the balloon. The total mass of the system is 102 kg, so the weight is 102 x 9.81 = 1000.62 N. The weight of the air in the balloon is equal to the density of air multiplied by the volume of air in the balloon, which we'll call V. Similarly, the weight of the helium and air mixture in the balloon is equal to the density of the mixture multiplied by V, and the weight of the helium is equal to the density of helium multiplied by V.
So we have:
(1.29 kg/m3) x V + (0.372 kg/m3) x V = (102 kg / 9.81 m/s2)
1.662 kg/m3 x V = 1038.25 N
V = 623.95 m3
Therefore, the volume of the balloon is approximately 623.95 m3.
To find the volume of the balloon, you can use the buoyancy principle. The buoyant force acting on the balloon equals the weight of the displaced air.
Buoyant force = (mass of payload + mass of empty balloon) * g
where g is the acceleration due to gravity (approximately 9.81 m/s²).
The weight of the displaced air equals the difference in density between the air and the helium-air mixture, multiplied by the volume of the balloon:
Buoyant force = (air density - helium-air mixture density) * volume * g
We know the mass of the payload and the empty balloon is 102 kg, and the densities are given. We can now solve for the volume:
(1.29 kg/m³ - 0.372 kg/m³) * volume * 9.81 m/s² = 102 kg * 9.81 m/s²
0.918 kg/m³ * volume * 9.81 m/s² = 1000.62 kg * m/s²
Divide both sides by 0.918 kg/m³ and 9.81 m/s²:
volume = 1000.62 kg * m/s² / (0.918 kg/m³ * 9.81 m/s²)
volume ≈ 111.82 m³
The volume of the balloon is approximately 111.82 m³.

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poste en français s’il vous plaît

Answer:

conduction s convention s radiation

Answer: decreases

Explanation: As frequency increases the period of a wave decreases because they have an inverse relationship. The equation for wave period (T) is the inverse of the frequency (f). So, as frequency increases, the value for period will decrease accordingly.

Answer: 0.18 m/s

Explanation:

This is a conservation of momentum problem.  Total momentum before the collision must equal the total momentum after the collision.  

Momentum = p = mv

let x = velocity of the second marble after the collision

(0.15 kg)(2.5 m/s) + (0.25 kg)(-3.0 m/s) = (0.15 kg)(-2.8 m/s) + (0.25 kg)(x)

-0.375 kg·m/s = -0.42 kg·m/s + (0.25 kg)x

(0.25 kg)x = (0.42 - 0.375) kg·m/s =  0.045 kg·m/s

x =  (0.045 kg·m/s) / (0.25 kg) = 0.18 m/s

Answer:

Doubling the speed.

E - M v^2

M = W / g     energy is proportional to weight

But energy is proportional to v^2

The statements true in regards to heat is 3. Heat is a form of energy, can be reflected by a mirror, and cannot pass through a vacuum.

Heat is a form of energy. Heat is the transfer of thermal energy from one object to another. Thermal energy is the energy of motion of the particles in an object. Heat can be reflected by a mirror. Heat is a form of electromagnetic radiation, and electromagnetic radiation can be reflected by mirrors.

Heat cannot pass through a vacuum. Heat is a form of electromagnetic radiation, and electromagnetic radiation cannot pass through a vacuum. Heat is not an electromagnetic radiation. It is a form of energy that is transferred from one object to another because of a difference in temperature.

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Complete question:

Which of the following statements are true regarding heat?

(a) Heat is a form of energy

(b) Heat can be reflected by mirror

(c) Heat is an electromagnetic radiation

(d) Heat can pass through vacuum

Select the correct answer from the codes given below :

1. 1, 2 and 3

2. 2, 3 and 4

3. 1, 2 and 4

4. 1, 3 and 4

Answer:

D

Explanation:

this is simple, because when air is removed, means that there is no particles in the jar so vacuum is achieved, and when you can't hear a sound means that the sound couldn't travel through the vacuum. which means that sound cannot travel through vacuum,

as a result, sound requires a medium ( air) travel from one point to another.

hope it helps, if not please report it so that someone else gets to try it

Answer:

82.6

Explanation:

Answer:

I think it is 1,200.

Explanation:

In the research I found, It says in a paragraph it is 1,200. I don't know if this is wrong or correct. I hope this helps!!!

Free fall is a type of accelerated motion, which means that a falling object experiences a continuously increasing velocity. In free fall, the object is subject only to the force of gravity, resulting in a constant acceleration downward.

When an object is in free fall, it is not subject to any forces other than gravity. The force of gravity causes the object to accelerate downward at a constant rate. This acceleration is approximately 9.8 m/s^2 on Earth and is represented by the symbol 'g'.

As the object falls, its velocity increases at a steady rate. This means that for each unit of time that passes, the object's speed increases by the same amount. For example, in the first second of free fall, the velocity of the object increases by 9.8 m/s. In the second second, it increases by an additional 9.8 m/s, and so on.

The concept of free fall is fundamental to understanding the motion of objects under the influence of gravity. It allows us to calculate the position, velocity, and acceleration of falling objects and is crucial in fields such as physics, engineering, and astronomy.

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This is evidence that Earth and moon are simply pulling on each other and Earth's and moon's gravitational pulls comprise an action-reaction pair.

The correct option is both A and B.

All objects with mass, including our Earth, really bend and curve spacetime, which is what causes gravity to pull you toward the ground. What you experience as gravity is that curvature.

The cause of the Moon's orbital rotation around the Earth. The ocean's tides are controlled by the force of the Moon. the force that confines all gases to the Sun. The force that acts on us is what allows us to walk on the ground as opposed to floating in the air.

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The most likely effect of installing an electric transformer with two coils on an electrical wire is that the voltage carried on the wire will decrease.

What is the most likely effect of installing an electric transformer with two coils on an electrical wire?

The device shown in the image is an electric transformer with two coils. Transformers are used to change the voltage of an alternating current (AC) in a power transmission system. The primary coil is connected to the power source, and the secondary coil is connected to the load.

The most likely effect of installing a transformer on an electrical wire is that the voltage carried on the wire will decrease. When the wire is connected to the primary coil of the transformer, the alternating current flowing through the wire produces a magnetic field around the wire.This magnetic field causes current to flow through the secondary coil, which is connected to the load. The voltage in the secondary coil is proportional to the number of turns in the coil and the voltage in the primary coil.

Therefore, if the number of turns in the secondary coil is less than the number of turns in the primary coil, the voltage in the secondary coil will be lower than the voltage in the primary coil. Conversely, if the number of turns in the secondary coil is greater than the number of turns in the primary coil, the voltage in the secondary coil will be higher than the voltage in the primary coil. In either case, the voltage carried on the wire will decrease as it passes through the transformer.

Therefore, the correct answer is D: The voltage carried on the wire will decrease.

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Answer:

When a ray of light passes through a glass slab of a certain thickness, the ray gets displaced or shifted from the original path. This is called lateral shift/displacement.

Explanation:

.

The attractive Coulomb force between the proton and electron is -2.31 × 10⁻⁸ N. The negative sign indicates that the force is attractive, as expected for opposite charges

The distance between the proton and electron can be calculated using the distance formula:

d = √((x₂ - x₁)²+ (y₂ - y₁)²)

= √((0.0 - 1.0)² + (4.0 - 0.0)²)

= √(17) nm

The force between the proton and electron can be calculated using Coulomb's law:

F = k × (q₁ × q₂) / d²

where k is the Coulomb constant, q₁ and q₂ are the charges of the proton and electron, respectively, and d is the distance between them.

Substituting the given values, we get:

F = 9.0 × 10⁹ N·m²/C² ₓ (-1.6 × 10⁻¹⁹ C) ₓ (1.6 × 10⁻¹⁹ C) / √(17) × 10⁻⁹ m)²

= -2.31 × 10⁻⁸ N

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The work done by the pump to fill the 1000-kg water tower is 490500 Joules.

Every time a force pushes something over a distance, work is done. By multiplying the force by the distance moved in the force's direction, you may determine the energy transferred, or work done.

To calculate the work done by the pump to fill the water tower, we can use the formula:

W = F * d * cos(θ)

Where W is the work done, F is the force applied, d is the distance moved, and θ is the angle between the force vector and the displacement vector.

In this case, the force applied is the weight of the water being pumped, which can be calculated as:

F = m * g

Where m is the mass of the water (1000 kg) and g is the acceleration due to gravity (9.81 \(m/s^2\)).

F = 1000 kg * 9.81 \(m/s^2\) = 9810 N

The distance moved is the average height of the water tower, which is 50 m.

The angle between the force vector and the displacement vector is 0 degrees, since the force is applied vertically upwards and the displacement is also in the vertical direction.

Substituting the given values, we get:

W = F * d * cos(θ) = 9810 N * 50 m * cos(0°) = 490500 J

Therefore, the answer is 490500 Joules.

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Answer:

1. The period is 1.74 s.

2. The frequency is 0.57 Hz

Explanation:

1. Determination of the the period.

Spring constant (K) = 30 N/m

Mass (m) = 2.3 Kg

Pi (π) = 3.14

Period (T) =?

The period of the vibration can be obtained as follow:

T = 2π√(m/K)

T = 2 × 3.14 × √(2.3 / 30)

T = 6.28 × √(2.3 / 30)

T = 1.74 s

Thus, the period of the vibration is 1.74 s.

2. Determination of the frequency.

Period (T) = 1.74 s

Frequency (f) =?

The frequency of the vibration can be obtained as follow:

f = 1/T

f = 1/1.74

f = 0.57 Hz

Thus, the frequency of the vibration is 0.57 Hz

The period of the vibration is  1.76 s and the frequency of the vibration is  0.57 s-1.

Using the formula;

T = 2π√(m/K)

Where;

T = period

m = mass

K = spring constant

Substituting values;

T = 2(3.142)√2.3/30

T = 6.284 × 0.28

T = 1.76 s

Recall that the period is the inverse of frequency;

f = 1/T

f = 1/1.76 s

f = 0.57 s-1

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Threshold 1 and Threshold 2 Accelerated Remitters will receive a PD7A-AR CRA Statement of Account. Option B is correct.

The CRA Statement of Account that would be received by Threshold 1 and 2 accelerated remitters is PD7A-AR.

CRA Statement of Account. The CRA statement of account is a statement of your account with the Canada Revenue Agency (CRA) which shows the balance owed or the credit available to you. CRA account statements can be used to check your account balance, view transactions, and payments made towards your balance.

In conclusion, Threshold 1 and 2 accelerated remitters receive a PD7A-AR CRA Statement of Account.

Therefore, Option B is correct.

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