A large, moving truck crashes into a small parked car. How do the magnitudes of the impulses and theforces on each vehicle compare during the collision?
A. The truck experiences less force and less impulse.
B. The truck experiences equal force and equal impulse.
C. The truck experiences less force but more impulse.
D. The truck experiences more force but less impulse.

Answer:

it is the dependent since it keeps changing over time get it :)

Explanation:

Answer:

\(P=40 \ W\)

Conceptual:

\(\boxed{\left\begin{array}{ccc}\text{\underline{Equations for Work:}}\\W=F \Delta rcos(\theta) \ \text{(Constant} \ \vec F) \\W= \int\limits^{r_2}_{r_1} {Fcos(\theta)} \, dr \ \text{(Varible} \ \vec F) \end{array}\right }\)

The angle "θ" is the angle between the force applied and the direction of displacement.

\(\boxed{\left\begin{array}{ccc}\text{\underline{Formula for Power:}}\\\\P=\frac{W}{t} \end{array}\right}\)

Explanation:

Given that an engine does 400 J of work in 10 seconds. Find the power of the engine.

\(W=400 \ J\\t=10 \ s\)

Plug these values into the formula for power.

\(P=\frac{W}{t} \\\\\Longrightarrow P=\frac{400}{10}\\\\\therefore \boxed{P=40 \ W}\)

Thus, the engines power is calculated.

The speed of an electromagnetic wave is 299,792,458 meters per second (m/s) or the speed of light.

The direction of the vector product of E (electric field) and B (magnetic field) indicates the direction of energy transfer in an electromagnetic wave. This direction is perpendicular to both the E and B fields. The wave propagates in this direction as well. The direction of the vector product is referred to as the Poynting vector.

The Poynting vector, S, provides information about the direction and intensity of the electromagnetic energy flux or radiation pressure density. Its SI unit is watt per square meter (W/m²). It can be mathematically expressed as:S = E × BIn an electromagnetic wave, the E and B fields oscillate in mutually perpendicular planes. The direction of energy transfer is also perpendicular to both the E and B fields. An electromagnetic wave propagates perpendicular to both E and B fields and the direction of energy transfer. It has both electric and magnetic properties and carries energy. Therefore, an electromagnetic wave can be defined as a wave of energy produced by the acceleration of an electric charge and propagated through a vacuum or a medium.

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The magnitude of the electric dipole moment is 9.30 × 10⁻¹⁰ Cm.

A dipole is an electrically charged object with a positive charge at one end and a negative charge at the other end. The term "dipole" refers to the separation of electric charge, with the positive and negative charges being located at opposite ends of the object. Dipoles are a fundamental concept in the study of electric and magnetic fields and have many applications in physics, chemistry, and engineering. For example, a water molecule can be considered a dipole, with the positive end being the hydrogen atom and the negative end being the oxygen atom. Dipoles also play a crucial role in chemical bonding and molecular interactions.

The magnitude of the electric dipole moment (p) can be calculated using the formula:

p = Q * d

where Q is the magnitude of the charges and d is the separation between the charges.

Plugging in the given values:

p = 1.50 nC × 6.20  = 9.30 × 10⁻¹⁰ Cm

So, the magnitude of the electric dipole moment is 9.30 × 10⁻¹⁰ Cm.

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The time taken for the gap to arc over is 139 µs. Given: Switch capacitance = 2.5µF, Resistor resistance = 1.5 kΩ, Voltage = 120 V,

The initial voltage on the capacitor = 0

Formula used is :  `t = -ln(1-Vc/Vi)/RC`

Where, Vi = Initial voltage on the capacitor

Vc = voltage on capacitor at time t

C = Capacitance

R = Resistance

Here, R = 1.5 kΩ = 1.5 * \(10^3\) Ω and C = 2.5µF = 2.5 * \(10^6\) F

Initial voltage on the capacitor = 0

As the capacitor is initially uncharged, the voltage across the capacitor and resistance would be equal to the voltage across the battery,120 V

Therefore, Vi = 120V

Let Vc = 120V/2 = 60V, which is the voltage at which the arc-over occurs.

Substituting the given values, we get: `t = -ln(1-60/120)/(1.5*\(10^3\)*2.5*\(10^{-6}\))`= 1.39 x \(10^{-4}\) s = 139 µs

Rounding the above value to three significant figures, we get `t = 139 µs`.

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c. Vessel side holes

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Answer:

"The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion."

Explanation:

I hope this helps! <3

40 V

Explanation

Electric potential at any point inside a hollow metallic sphere is constant. Therefore, if potential at surface is 40 V, potential at centre will also be 40 V.

40V

also In a hollow sphere, with the charge on the surface of spheres, there is no charge enclosed within the sphere, since all the charges are in surface. Hence there is no electric field within the sphere.

I hope this helps you

Examples of third-class levers are Baseball bats, Shovels, Fishing rods, and Tweezers.

A third-class lever is a particular kind of basic machine that is frequently utilized in a variety of products, from sporting goods to construction tools.

Third-class levers include, for instance:

The bat's point of contact with the ball is known as the fulcrum, and the batter's hands' exerted force is known as the effort.

While using a shovel, the effort is the force used by the user's hands, and the fulcrum is the point at which the blade makes contact with the ground.

The effort, or power used to reel in the fish, is given to the fishing line at the place where the angler's hands are holding the rod.

The fulcrum is the point where the tips of the tweezers meet, and the effort is the force applied by the user's fingers to grip and remove a small object.

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The vector of the bucket is a force of 47.4 pounds acting at an angle of 39 degrees with the horizontal.

To find the vector of the bucket, we need to first calculate the net force acting on it. This can be done by resolving the given forces into their horizontal and vertical components and then adding them up.

1. Resolving Jill's force:

Jill pulled at an angle of 30 degrees with a force of 20 pounds. We can resolve this into its horizontal and vertical components as follows:

Horizontal component = 20 cos(30)

= 17.32 pounds

Vertical component = 20 sin(30)

= 10 pounds

2. Resolving Jack's force:

Jack pulled at an angle of 45 degrees with a force of 28 pounds.

We can resolve this into its horizontal and vertical components as follows:

Horizontal component = 28 cos(45)

= 19.8 pounds

Vertical component = 28 sin(45)

= 19.8 pounds

3. Adding up the components:

To find the net horizontal and vertical components, we can add up the horizontal and vertical components of the two forces as follows:

Net horizontal component = 17.32 + 19.8

= 37.12 pounds

Net vertical component = 10 + 19.8

= 29.8 pounds

4. Finding the vector:

Now that we have the net horizontal and vertical components, we can use the Pythagorean theorem to find the magnitude of the vector as follows:

Magnitude = sqrt((37.12)^2 + (29.8)^2)

= 47.4 pounds

Finally, we need to find the direction of the vector. We can use trigonometry to find this as follows:

Tanθ = Net vertical component / Net horizontal component = 29.8 / 37.12θ

= tan^-1(29.8 / 37.12)

= 39 degrees (approx.)

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Answer:

See below

Explanation:

x component =  90 cos 45 = 63.6 N

y component =  90 sin 45  = 63.6 N

Answer:

\(Changes \: in \: the \: independent \: variable \: cause \\ changes \: in \: the \: dependent \: variable.\)

If two marbles of the same mass collide and stick together, angle between the displacement vectors after the crash should be 90 degrees. This is because the momentum of the system is conserved in a collision, and the momentum is a vector quantity.

In a two-dimensional collision, momentum of each marble can be represented as a vector, with magnitude equal to the product of its mass and velocity, and direction equal to the direction of its velocity. After collision, the total momentum of the system is the sum of the momentum vectors of the two marbles, which can be represented as a resultant vector. Angle between resultant vector and vectors representing initial momentum of each marble should be 90 degrees.

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Answer:

Pacific Ocean

Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”

Explanation:

where are most volcanoes located in the Pacific ocean

To calculate the hours a bird can fly using the energy supplied by 4.00 grams of fat, we need to find the total energy content of the fat and then divide it by the bird's energy consumption rate.

Fat provides approximately 9 kcal of energy per gram. First, convert the energy content of the fat to watts:

4.00 grams of fat * 9 kcal/gram = 36 kcal

1 kcal = 4184 joules

36 kcal * 4184 joules/kcal = 150,624 joules

1 watt = 1 joule/second, so the bird consumes 3.70 joules per second.

Now, divide the total energy content of the fat by the bird's energy consumption rate:

150,624 joules / 3.70 joules/second = 40,704 seconds

Finally, convert the seconds to hours:

40,704 seconds / 3600 seconds/hour ≈ 11.31 hours

So, the bird can fly for approximately 11.31 hours using the energy supplied by 4.00 grams of fat.

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The first step is to calculate the energy that can be obtained from 4.00 grams of fat.

One gram of fat can provide approximately 9 calories of energy, which is equivalent to 37.656 joules. Therefore, 4.00 grams of fat can provide:

Energy = 4.00 grams x 9 calories/gram x 4.184 joules/calorie

Energy = 150.336 joules

Next, we can calculate the time that the bird can fly using this energy supply by using the formula:

Time = Energy / Power

where Power is the rate at which the bird consumes energy, which is 3.70 watts.

Time = 150.336 joules / 3.70 watts

Time = 40.62 seconds

Therefore, the bird can fly for approximately 40.62 seconds using the energy supply provided by 4.00 grams of fat.

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In order to determine how the speeds of two cars travelling around two identical frictionless and banked curves must compare if they are along a circle of the same radius, given one curve is on Earth while the other is on the moon, we can make use of the formula below

:centripetal force = (mass of object × velocity^2)/radius of the circle travelled For circular motion

centripetal force is provided by friction between the tyres of the vehicle and the ground. This force depends on the normal force acting on the vehicle from the ground. The normal force in turn depends on the force of gravity experienced by the object and the angle of banking of the curve. In this case, since both curves are identical and frictionless, the normal force on the cars will be the same as well.

Thus, centripetal force experienced by each car is the same, given they are travelling around a circle of the same radius .Therefore, from the formula: centripetal force = (mass of object × velocity^2)/radius of the circle travelled velocity = √(centripetal force × radius of the circle travelled/mass of object

)From the formula above, we can conclude that the speeds of the two cars must be the same regardless of the fact that one curve is on Earth and the other is on the moon, since the radius of the circle travelled by both cars are the same, the mass of both cars are the same, and the centripetal force experienced by both cars are the same.

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Answer:

by using formula,

wavelength= velocity/frequency

= 120/6

= 20 meter

Ans: 20 meter

Answer:

wavelength= velocity

= 120/6= 20 meter

Explanation:

Answer:

all of the above

Explanation:

they all require speed to beat

Answer:

All of the above

Explanation:

if your taking any kind of quiz or even review and there's a choice of "all of the above" it's always right because that answer won't be on every question!

Explanation:

Hey there!!

Here,

we have,

As per the definition of pressure,

\(p = \frac{f}{a} \)

Putting f = m.g and keeping a constant.

\(p = \frac{m.g}{a} \)

Keeping m = d×v.

\(p = \frac{d \times v \times g}{a} \)

Keep v= a.h

\(p = \frac{d(a.h)g}{a} \)

Cancelling a from numerator and denominator,

we get,

p = hdg

Proved.

Difference between sinking and floating are:

Hope it helps....

Use the following kinematic equation:

where,

v: final speed = 25m/s

vo: initial speed = 0m/s

t: time interval = 30.0s

a: acceleration = ?

replace the previous values of the parameters into the expression for a and simplify:

The acceleration of th train is approximately 0.83m/s^2

A key contribution of Hermann von Helmholtz to the study of neuron function was measuring the conduction speed through nerves of the action potential.

Helmholtz created a technique known as the "method of the nerve impulse" to gauge the rate of nerve conduction. He performed tests in which he stimulated a nerve at one end and timed the passage of an action potential to the other end of the nerve.

Helmholtz determined the speed of the nerve impulse by meticulously measuring these time gaps. His research and observations shed important new light on how signals move through the neurological system.

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Water is more dense in its solid state.

This statement is true.

Answer: what is it asking

Explanation:

The machine's efficiency is 81.61%, indicating that it converts 81.61% of the input energy into useful output energy, while the remaining percentage is lost as waste or dissipated in the process.

To calculate the efficiency, we can use the formula:

Efficiency = (Actual Output / Design Capacity) × 100

Given:

Actual Output = 7,407

Design Capacity = 9,050

Substituting the values into the formula:

Efficiency = (7,407 / 9,050) × 100

          = 0.817 × 100

          = 81.61%

Therefore, the efficiency of the machine is 81.61%.

Efficiency is a measure of how effectively a machine or system is utilizing its available capacity. In this case, the machine has a design capacity of 9,050 units, but it only produced an actual output of 7,407 units.

By dividing the actual output by the design capacity and multiplying by 100, we find that the machine's efficiency is 81.61%. This indicates that the machine is operating at approximately 81.61% of its full capacity.

A higher efficiency percentage would indicate a more optimal utilization of the machine's capacity, while a lower percentage suggests room for improvement in maximizing output.

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Answer:

sorry, I do not know :(

Explanation:

Do not be angry!!!

A rigid insulated rod, with two unequal charges attached to its ends, is placed in a uniform electric field E. The rod experiences a net force to the left and a counterclockwise rotation. The correct option is B.

The unequal charges attached to the ends of the rod experience a force due to the uniform electric field. The upper charge experiences a force to the left, while the bottom charge experiences a force to the right.

According to Coulomb's Law, the magnitude of the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Since the upper charge is twice the magnitude of the bottom charge, the force on the upper charge will be twice as strong.

Therefore, the net force on the rod will be to the left, since the force on the upper charge to the left is greater than the force on the bottom charge to the right. Additionally, the torque on the rod will be counterclockwise since the forces are acting in opposite directions and creating a rotational force.

Thus, the correct option is (B) net force to the left and a counterclockwise rotation.

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Answer:

The length of the cord she should use is approximately 47.3m and maximum acceleration she  will experience is 31.1 m/s²

Explanation:

a) To find the length of the cord she should use, follow these steps:

1. Calculate the spring constant (k) using Hooke's law and the preliminary test data:
F = k * x
mg = k * 1.70 m (where m is her mass and g is the acceleration due to gravity)
k = mg / 1.70 m

2. Calculate the total stretch (x_total) when she stops 13.0 m above the water:
x_total = 66.0 m - 13.0 m = 53.0 m

3. Calculate the length of the cord (L) using the spring constant and the total stretch:
mg = k * (L + x_total)
L = (mg / k) - x_total
L = (1.70 m) - 53.0 m

The length of the cord she should use is approximately 47.3 m.

b) To find the maximum acceleration she will experience, follow these steps:

1. Calculate the maximum force (F_max) using the spring constant and the total stretch:
F_max = k * x_total

2. Calculate the maximum acceleration (a_max) using Newton's second law:
F_max = m * a_max
a_max = F_max / m

Using the spring constant calculated earlier (k = mg / 1.70 m), we have:

a_max = (k * x_total) / m
a_max = (mg / 1.70 m) * 53.0 m / m

The maximum acceleration she will experience is approximately 31.1 m/s².

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(a)The period (T) is 0.500 s.

(b)The total mechanical energy 37.744 J.

(c)The mass m ≈ 8.432 kg

a) The period (T) of the motion is the time it takes for the mass to complete one full cycle of oscillation. In this case, it requires 0.250 s to travel from point A to point B and an additional 0.250 s to return from point B to point A. Therefore, the total time for one complete cycle is 0.250 s + 0.250 s = 0.500 s. Hence, the period (T) is 0.500 s.

The frequency (f) is the reciprocal of the period and represents the number of cycles per second. Thus, the frequency can be calculated as f = 1/T. In this case, f = 1/0.500 s = 2 Hz.

The amplitude (A) of the motion is the maximum displacement of the mass from its equilibrium position. As the mass oscillates between points A and B, the distance between these points represents the amplitude. Therefore, the amplitude (A) is 56 cm.

b) The total mechanical energy (E) in the oscillations can be calculated using the formula E = (1/2) * k * A^2, where k is the spring constant and A is the amplitude. Substituting the given values, we have E = (1/2) * (245 N/m) * (0.56 m)^2 = 37.744 J.

c) To determine the mass (m) involved in the oscillations, we can use the formula E = (1/2) * m * v^2, where E is the total mechanical energy and v is the velocity at the amplitude. Since the oscillation is between points A and B, the velocity at the amplitude can be calculated as v = 2 * A / T = 2 * 0.56 m / 0.500 s = 2.24 m/s. Substituting the known values, we have 37.744 J = (1/2) * m * (2.24 m/s)^2. Solving for m, we find m ≈ 8.432 kg.

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