Q3. A 3500 kg van hits a 2500 kg car with a force of 1480 N [E].
a) What force does the van experience?

Gravitational potential energy is converted to kinetic (Motion) energy when the object begins to move.

The energy gained from this change in position is stored within the body as gravitational potential energy if a ball is raised from the ground to a height above the earth. The gravitational potential energy is then converted into kinetic energy when the ball hits the earth.

Therefore, the way an object falls, its gravitational potential energy is said to be transformed or altered  into the kinetic energy of motion.

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Answer:

a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars

Explanation:

A student learns that a certain comet in the solar system is considered a short-period comet The comet originates in the Kuiper belt is the student most justified in concluding.

The Sun and the things that circle it make up the gravitationally bound solar system. It was created 4.6 billion years ago when a massive interstellar molecular cloud collapsed because to gravity. The Sun is the system's primary mass source, while Jupiter is home to the majority of the system's leftover mass. Our Sun is called Sol after the Latin word for Sun, "solis," and anything connected to the Sun is referred to as "solar" as a result. The only known example of a habitable planet, the only star we can see up close, and the only planets we can explore with spacecraft are all found in the Solar System. Understanding the genesis and evolution of planets depends on solar system study.

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The current in the loop will be 6.13 A.

The magnetic field is the area in and around a magnet that is subject to the effects of magnetism. We employ the magnetic field as a tool to describe the distribution of the magnetic force in the vicinity and inside something magnetic in nature.

According to the question,

Radius of loop,

r =5.5 cm or,

r  = 0.055 m                          

Earth's magnetic field,  = 0.7G = 0.7 × 10⁻⁴ T

Number of turns, N = 1

We know the relation,

B = µ₀ ×N×I/2r

B = [tex]B_{e\\}[/tex]

then,

[tex]B_{e\\}[/tex] = µ₀ ×N×I/2r

By substituting the values,

0.7 × 10⁻⁴ = 4π × 10⁻⁷×1 × I / 2× 0.055

hence,

The current will be

I = 2× 0.055 × 0.7 × 10⁻⁴/ 4π ×10⁻⁷×1

I = 6.13A

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The truth that Voyager maintains to hurry out of the sun system, despite the fact that its rockets haven't any fuel, is an instance of Newton's first regulation(law) of movement.

Newton's first regulation states that each item will continue to be at relaxation or in uniform movement in a immediately line except pressured to extrude its kingdom via way of means of the movement of an outside force. This tendency to withstand modifications in a kingdom of movement is inertia. The 3 legal guidelines of movement have been first said via way of means of Isaac Newton in his Philosophie nutralize Principia Mathematica (Mathematical Principles of Natural Philosophy), firstly posted in 1687.

Newton used them to research and provide an explanation for the movement of many bodily gadgets and systems, which laid the muse for classical mechanics. In the time seeing that Newton, the conceptual content material of classical physics has been reformulated in opportunity ways, concerning unique mathematical techniques which have yielded insights which have been obscured withinside the original, Newtonian formulation.

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Coefficient 2  should be placed in front of HCl to balance  the given chemical equation.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Given that the number of hailstones is n = 562

The mass of hailstone is m = 2 g = 0.002 kg

The speed of hailstone is v = 5.8 m/s

The time taken will be t = 92 s

The angle is

We have to calculate the force.

The force can be calculated by the formula

Substituting the values, the force will be

a) maximum speed (umax) that the missile could achieve in level flight = 2123 m/s

b) velocity of the gas exiting the nozzle (i.e., ue) at this maximum operating flight speed = 2120 m/s

The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.

Given data:

Pressure ratio = 45.5

TSFC = 5.27 * 10⁻⁵ kg/N

Cp = 1150 J/Kg

Wair = 25.5

Ta = 240K

Δhe = 4.4 KJ/kg

Tmax = 2200 K

(a) Maximum speed (Umax):

Ramjet's energy equation:

T₀₂ = Ta + (μ² / 2μ)

[tex]Umax = \sqrt{2Cp (Tmax - Ta})[/tex]

[tex]Umax = \sqrt{2* H50(2200 - 240)}\\ \\Umax = \sqrt{2 * 1150 * 1960}[/tex]

Therefore, Umax = 2123 m/s

(b) Velocity of exiting gas (Ue)

No fuel is provided, thus air expands back to its initial speed i.e., (Ue = U)

The specific thrust = [1 + f] Ue - U = 0

Therefore, Ue = 2120 m/s

(c) T-S diagram of Ramjet cycle:

The T-S schematics for Ramjet at U < Umax and U = Umax are based on the aforementioned two components ( 'a' and 'b')

Ramjets' maximum operating speed is significantly constrained by their maximum operating temperature.

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Answer:

true

Explanation:

a) Yes the ball clear it. Through, equation of motion is 1.104 m > 0.9 m

b) The distance between the center of the ball and the top of the net is 0.204 m

a) As we know the equation of motion,

  y = 1/2(at^2)

   y= 1/2 (9.81)(0.508)^2

  y = 1.266 m

height = Y net - y

h = 2.37m - 1.266m

h = 1.104m

b)

 height in y direction - net height

 = 1.104m - 0.9m

 = 0.204m

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the first option, getting enough sleep

        When acceleration is constant, we may connect displacement to time and velocity, two of the other three parameters that describe motion, using the following three equations: d = ( 1 2 ) ( 1 2 ) (v f + v I (t) (Equation 1) D = v I t + a t + 1 2 (Equation 2) V I 2 + 2 a d = v f 2 (Equation 3).

         Displacement is directly proportional to the square of the length of the linear motion when acceleration is constant and beginning velocity is zero.

Solution:-

vi =+245km/h

aavg = -3.0m/s2

vf =vi -(0.200)vi

vi =(245km/h)(1h/3600s)(103m/1km)= +68.1m/s

vf =(1.000-0.200)vi =(0.800)(68.1m/s)=+54.5m/s

Δt=vf -vi /aavg

 = 54.5m/s - 68.1m/s / -3.0m/s2

 =-13.6m/s /-3.0 m/s2

 =  4.5s

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A truck is traveling at a constant velocity of 30 m/s. It  will take the time to travel 1000 meters is (t)=33.33 S.

The velocity means the ratio of distance and time. Mathematically it means the distance divided by time. It can be measured in m/s and cm/s.

To calculate the time we are using thee formula here is,

S=vt

Or, t=S/v

Here we are given,

S = The covered distance of the car = 1000 m

v= The velocity of the car. = 30 m/s.

We have to calculate the time taken by truck = t

Now we put the values in the above equation, we get

t=S/v

Or, t=1000/30

Or, t=33.33 S

From the calculation we can say that,  It will take the time to travel 1000 meters is (t)=33.33 S.

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Answer: The wall and base

Explanation:

the acceleration is maximum at the peak position and kinetic energy is connected with the mean position.

the object which is performing a simple harmonic motion because the acceleration is directly proportional to displacement that the direction is opposite side the formula is given by

F= -K X

K is the spring constant  

because the amplitude means the maximum displacement

the maximum velocity means that the that is proportional to the angular frequency  and the relation is given by

V=rW

V is the velocity

r is the radius

W is the angular frequency that the SI unit is rad/s.

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If an object undergoing simple harmonic motion with amplitude 2.3 m and velocity 15 m/s maximum, then its angular frequency is 6.52 rad/s.

Missing data from the question:

- the amplitude is 2.3 m

- the maximum velocity of the object is 15 m/s

The equation for the velocity of a simple harmonic motion is given by:

v = A. ω. cos(ωt)

Where:

ω = angular frequency

A = amplitude

Parameters given:

A = 2.3 m

v = 15  m/s

Let's take t = 0, hence,

v = A. ω. cos(0) = A . ω

15 = 2.3 ω

ω = 15/2.3 = 6.52 rad/s

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The rock reaches a maximum height in 2.4 seconds which implies the rock was thrown at a speed of 24m/s.

Let:

Using the First equation of motion:

                         v = u + at

                         0 = u + (-10)(2.4)

                         0 = u + (- 24)

                         u = 24m/s

The First equation of motion establishes a relation between velocities and time. With the provided information, the most suitable equation which can be used to derive the answer is the First equation of motion.

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When a mass attached to a spring, it will make the spring to produce a harmonic motion with frequency 1.4 Hz. Then the mass is 77.48 gram.

The frequency of a harmonic motion caused by a displaced spring is:

f = 1/2π . √(k/m)

Where:

k = spring constant

m = mass

Parameters given from the problem:

f = 1.4 Hz

k = 6 N/m

Plug those parameters into the formula:

1.4 = 1/2π . √(6/m)

√(6/m) = 8.8

m = 0.07748 kg = 77.48 gram

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Stephen Hawking, speaking at the opening of the 2012 London Paralympics games, said, “There is no such thing as a standard run-of-the mill human being and however difficult life may seem but there is always something you can do, and succeed at.”

Stephen Hawking was born on 8th January, 1942, Oxford, England. He died on March 14, 2018, Cambridge. He was that theoretical physicist whose theory of exploding black holes drew upon both relativity theory and quantum mechanics. He had also worked with space-time singularities.

Hawking was also awarded the US Presidential Medal of Freedom in year 2009.

At the age of 21, Hawking was diagnosed with amyotrophic lateral sclerosis that gradually paralyzed him. Stephen Hawking had an estimated IQ of 160. According to Healthline, 68% of people have an IQ that ranges between 85 and 115.

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The reference frame in which the bat is at rest immediately before the collision is the reference frame in which translational (nonconvertible) kinetic energy is greater.

As translational (nonconvertible) kinetic energy is greater when the bat is at rest because when it will be at rest the mass will be more. The translational dynamic energy of a body is rise to one-half the item of its mass and the square of its speed.

The translational kinetic energy depends on movement through space, and for an inflexible body of consistent mass, it rises to the item of half the mass times the square of the speed.

The movement of an unreservedly falling body could be a translational active vitality. Kinetic rangy at a pivoting fan is rotational kinetic energy.

In material science, the dynamic energy of a protest is the vitality that it has due to its movement. It is characterized as the work required to quicken a body of a given mass from rest to its expressed speed.

Having picked up this vitality amid its speeding up, the body keeps up this motor vitality unless its speed changes. The same sum of work is done by the body when decelerating from its current speed to a state of rest.

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Answer:

a pipe, ditch, ship or factory smokestack.”

Explanation:

The U.S. Environmental Protection Agency (EPA) defines point source pollution as “any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack.” Factories and sewage treatment plants are two common types of point sources.

A star's twinkling is caused by light from the star being refracted by the earth's atmosphere.

What is stars?
An astronomical object known as a star is made up of a luminous plasma spheroid that is held together by gravity. The Sun is the star that is closest to Earth. Other stars are also visible at night with the unaided eye, but due to their great distances from Earth, they appear as stationary points of light. Many of the brightest stars have names, and the most notable stars have been grouped into constellations and asterisms. Star catalogues have been put together by astronomers that list the known stars and offer standardised stellar designations. An estimated 10^22–10^24 stars are present in the observable universe. Only 4,000 of these stars can be seen with the unaided eye, and they are all located in the Milky Way galaxy.

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Heavy rain reduces your ability to see and be seen. So in daytime turn on all of the above ( d ) mentioned options.

Windshield wipers and windshield defroster are for the ability to see and the low beam headlights are for the ability to be seen by others. If it is night time drive below the speed limit because it is extremely hard to maneuver under those conditions.

Windshield wipers wipes the water off your windshield consistently. Low beam headlights indicate the presence of your car. Windshield defroster condenses the frosted windshield.

Therefore, in daytime turn on your windshield wipers, low beam headlights and windshield defroster.

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The magnitude of the rod's angular momentum is 165.92 [tex]Kg m^{2} s^{-1}[/tex].

The moment of inertia for the rod through an axis 'perpendicular' to one of its ends is given by :

[tex]I=\frac{Ml^{2} }{3}[/tex]                 (where M = mass of rod , l = length of rod)

Now, the angular momentum of the rod is given by;

L= Iω

  = [tex]\frac{Ml^{2} }{3}[/tex]×ω

  =[tex]\frac{12.7Kg * (3.15 m^{2})}{3}[/tex]* [tex]3.95 rad s^{-1}[/tex]

  = 165.92 [tex]Kg m^{2} s^{-1}[/tex]

∴ The required angular momentum is: 165.92 [tex]Kg m^{2} s^{-1}[/tex]

As the rotating equivalent of linear momentum in physics, angular momentum (rarely a moment of momentum or rotational momentum) is used. It is a conserved quantity, meaning that in a closed system, the total angular momentum stays constant, making it a significant physical quantity. The magnitude and direction of angular momentum are both conserved. The conservation of angular momentum is responsible for the useful characteristics of bicycles, motorcycles, frisbee-lead bullets, and gyroscopes. Hurricanes develop spiral structures and neutron stars rotate rapidly due to the conservation of angular momentum. Conservation generally sets a limit on a system's potential motion but does not determine it in any way.

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Satellite B's radius will be less than Satellite A's radius.

m = Satellite Mass

v = Satellite Velocity

r = Orbital radius of the satellite

Relating the gravitational and centripetal forces

mv^2/ r= GmM/r^2

v^2/r=GM/r^2

v^2=GM/r

v = sqrtGM/r

As can be shown, the mass of the satellite has no bearing on the relationship between velocity and radius.

This implies that the radius must shrink for v to increase

Here, vb>va

Therefore, satellite b's radius will be smaller than satellite a's radius.

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The spring's maximum compression is 0.346 when mass of the block is 0.230 Kg and Speed is 1.40 m/s.

given,

mass of block = 0.230 Kg

speed = 1.40 m/s

spring constant = k = 3.75 N/m

using conservation of energy

a) K.E  =  P.E

1/2mv^2=1/2kx^2

1/2*0.23*1.40^2=1/2*3.75*x^2

X^2=0.120

X=0.346

b) The maximum compression will be equal to the compression in part an if the track is not friction-less.

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The speed of the baseball after this elastic collision is 35.825 m/s

In an elastic collision is one in which no net loss of kinetic energy in the system is observed after collision. Elastic collisions conserve, momentum and kinetic energy. It works on the basis of the law of conservation of momentum. This may be explained by following equation:

Pₙ = P₁ + P₂

mₙvₙ = m₁v₁ + m₂v₂

Where, Pₙ = final momentum

mₙ = total mass of the system

vₙ = final velocity of the system

For the given question:

(m₁ + m₂)vₙ = m₁v₁ + m₂v₂

(0.145 + 0.95)vₙ = (0.145 × 40) + (0.95 × 35)

1.09 vₙ = 5.8 + 33.25

1.09 vₙ = 39.05

vₙ = [tex]\frac{39.05}{1.09}[/tex]

vₙ = 35.825 m/s

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In between the two processes, we can see that the thermal energy of the mixture increases.

Recall that energy is the ability to do work. Now when we add the  partially melted to form a mixture of ice and ice water, we are going to increase the thermal energy of the water. This is because the water in the liquid state has a greater energy than water in the solid state.

Having see that liquid water contains more energetic particles than the the solid water, the thermal energy has increased in between the two processes.

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Answer:

a

Explanation:

because if gas particles move they move with speed and that is because they are free,so when they bump into something,they bump into it with force so it converts the energy

The force that needs to be applied to the second piece of rock to produce an acceleration of 8a is 8F.

The relationship between the force, mass, and acceleration of an object is given in the formula below:

The force on an object is directly proportional to its mass and acceleration.

However, the acceleration of an object when a constant force is applied is inversely proportional to the mass of the object.

Given two rocks that weigh 5 N each.

Force applied on the first rock, F produces an acceleration = a

F = ma

mass = constant

hence, F = a

For the second rock to have an acceleration 8a, the force applied will be:

F / a = Fx / 8a

Fx = 8 F

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Work done on the ball by its weight is  +25.872 J .

What is work done by gravity ?

Gravity is that force which pulls objects to the ground. There is a force that acts, so basically gravity acts. When you apply a power to an item, that power works for you. For example, if you throw a ball, the force on the ball will cause it to travel far and complete the task. Work is proportional to the applied force and the distance it covers or covers. For example, if you throw a ball with less force, the distance it travels will decrease proportionally to the force applied. Throwing the ball with more force increases the flight distance. Falling particles are forced to face the direction of gravity. The mass, the gravitational constant, and the height at which the falling object falls determine how large the falling object will be.

Work done by gravity is :

W= mg(h2-h1)

  = (0.500)(9.80)(6.90-1.62)

  = +25.872 J .

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