a woodchuck runs 19 m to the right in 4.8 s, then turns and runs 12 m to the left in 5 s. Part (a) What is the magnitude of the average velocity of the woodchuck in m/s?
v=____. PART B What is its average speed in m/s?

ANSWER

EXPLANATION

We want to find the angle of reflection of the ray of light.

According to the law of reflection, the angle of reflection must be equal to the angle of incidence of a ray of light:

Therefore, the angle of reflection of the ray of light is:

That is the answer.

Using the equation v² = u² + 2as, where u = 2.00 x 10² m/s, v = 2.40 x 10² m/s, and s = 1.20 km, the acceleration of the plane is approximately 3.06 m/s².

To determine the acceleration of the airplane, we can use the equation v² = u² + 2as, where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled. We are given u = 2.00 x 10² m/s, v = 2.40 x 10² m/s, and s = 1.20 km = 1200 m. Plugging these values into the equation and solving for a gives us approximately 3.06 m/s² as the acceleration of the airplane. This means that the airplane is increasing its speed by 3.06 m/s every second it's accelerating.

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Not enough gunpowder in the shotshell, utilizing the incorrect choke for your quarry, and using the incorrect shotshell in your shotgun are the two main causes of shotgun explosions and misfires.

A shotgun, often known as a scattergun or historically as a fowling piece, is a long-barreled firearm made to fire a shotshell, a straight-walled cartridge that typically shoots several small, shot-like pellet-like sub-projectiles called  shotgun.

The first known chemical explosive is gunpowder, usually known as "black powder" to distinguish it from smokeless powder used today. A combination of Sulphur, carbon (in the form of charcoal), and potassium nitrate make up this substance (saltpeter) contain in gunpowder.

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The statement "Sunspots are brighter than the rest of the sun's surface" is false.

Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. Magnetism is the force that magnets exert when they attract or repel one another. The movement of electric charges causes magnetism. Every material is composed of microscopic components known as atoms. Each atom contains electrons, which are charged particles. Magnetism is caused by attraction when two items are brought together or repulsion when two objects are moved apart. A magnet is an item with magnetic qualities. A magnet, for example, may attract another thing.

Here,

Sunspots are really darker than the surrounding photosphere, and thus appear as black spots on the sun's surface. This is because large magnetic fields are concentrated in these areas, inhibiting convection and cooling the surface.

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Hi there!

Voltage in a series can be expressed by the following:

\(V_T = V_1 + V_2\)

In words, the total voltage is equal to the sum of the individual voltage drops in a SERIES circuit.

We can solve for the total voltage:

\(V_T = 10 + 10 = \boxed{\text{ D. 20 V}}\)

Answer:

20 v

Explanation:

The force acting on the body can be determined using Newton's second law of motion,is -4N which states that Force (F) equals mass (m) multiplied by acceleration (a). First, we need to find the acceleration by differentiating the velocity equation with respect to time.

1. The given velocity equation is v = 3 - 2t.
2. To find the acceleration, differentiate the velocity equation with respect to time: a = dv/dt.
3. The derivative of 3 - 2t with respect to t is -2 (since the derivative of 3 is 0 and the derivative of -2t is -2).
4. Now, we have the acceleration: a = -2 m/s².
5. Using Newton's second law, F = m × a, where m = 2 kg and a = -2 m/s².
The force acting on the body is F = 2 kg × (-2 m/s²) = -4 N. Since the force has a negative sign, it acts in the opposite direction to the initial velocity.

The plane of the force is along the straight line where the body's motion occurs, with the force acting opposite to the velocity's direction.

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Final resultant velocity of Disk 1 is 4.45 m/s, traveling directly north.

A vector measurement of the rate and direction of motion is known as velocity

Initial momentum of the system before collision:

\(\rm p_{initial\) = m₁v₁ + m₂v₂

m₁ = 2m (mass of disk 1)

v₁ = 5 m/s (velocity of disk 1)

m₂ = m (mass of disk 2)

v₂ = 0 m/s (initial velocity of disk 2)

\(\rm p_{initial\) = (2m)(5 m/s) + (m)(0 m/s) = 10m m/s

After collision, momentum of the system is conserved:

\(\rm p_{final\) = (2m) × v₁' + m × v₂'

v₁' = final velocity of disk 1

v₂' = final velocity of disk 2

vx = 2.4 m/s × cos(33°) = 2.0 m/s

vy = 2.4 m/s × sin(33°) = 1.3 m/s

Total momentum of system after collision is: \(\rm p_{final\) = (2m) × v₁' + m × v₂' = (2m) × v₁' + m× (vx + vy)

(1/2) ×  m₁ × v₁²= (1/2)× m₁ × v₁'²+ (1/2) × m₂ × v₂'²

(2m) × v₁' + m × (vx + vy) = 10m m/s

(1/2) × (2m) × (5 m/s)² = (1/2) × (2m) × v₁'² + (1/2) × m × (2.4 m/s)²

v₁' = 4.45 m/s

Therefore, final resultant velocity of Disk 1 is 4.45 m/s, traveling directly north.

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Yes, there is a Gizmos lab available for students to explore the concept of nuclear decay. The Gizmos lab titled "Nuclear Decay" is part of the Physics curriculum and is designed to help students understand the process of radioactive decay and the concept of half-life.

In this lab, students are provided with a virtual simulation where they can observe the decay of radioactive isotopes over time. They can manipulate the initial quantity of the isotopes and observe how the decay occurs, leading to the formation of stable isotopes.

Students can also measure the half-life of different isotopes and analyze how the rate of decay changes over time.

The lab provides a hands-on and interactive learning experience, allowing students to visualize and explore the principles of nuclear decay.

It helps them develop a deeper understanding of concepts such as half-life, decay rates, and the role of isotopes in radioactive decay.

By engaging with this Gizmos lab, students can gain valuable insights into nuclear physics and its applications in various fields. They can analyze real-world scenarios, make predictions, and draw conclusions based on their observations.

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Answer:

a) R = 172.82 m, 5.3 north of east    b)   v = (0.24 ± 0.01) m / s

Explanation:

a) the displacement is a vector, so the easiest method to lock is looking for each component

let's start decomposing the vectors

 x₁ = - 160 m

second shift

angle 45 south of east

     cos (-45) = x₂ / d₂

     sin (-45) = y₂ / d₂

     x₂ = d₂ cos 45

     y₂ = -d₂ sin 45

     x₂ = 180 cos 45 = 127.28 m

     y₂ = -180 sin 45 = - 127.28 m

third shift

      cos 35 = x₃ / d₃

      sin 35 = y₃ / d₃

      x₃ = d₃ cos 35

      y₃ = d₃ sin 35

      x₃ = 250 cos 35 = 204.79 m

      y₃ = 250 sin 35 = 143.39 m ₃

X axis

       x_total = x₁ + x₂ + x₃

       x_total = -160 +127.28 +204.79

       x_total = 172.07 m

Y axis  

      y_total = y₁ + y₂ + y₃

      y_total = 0 - 127.28 + 143.39

      y_total = 16.11 m

to compose the displacement we use the Pythagorean theorem

      R = \(\sqrt{x^2 +y^2}\)

      R = \(\sqrt{172.07^2 + 16.11^2 }\)

      R = 172.82 m

in angle is

      tan θ = y_total / x_total

      ten θ = 16.11 / 172.07 = 0.0936

      θ = tan⁻¹ 0.0936

       θ = 5.3

angle is 5.3 north of east

b) the error in the distance is 5%,

               e% = ΔR/R  100

               ΔR = e% R / 100

               ΔR = 5 172.82 / 100

               ΔR = 8.6 m

the time error Dt = 20 s

We calculate the speed and this we calculate the error

      v = R / t

      v = 172.82 / 12 60

      v = 0.240027 m / s

the error in this magnitude is

      Δv = \(\frac{dv}{dR} \ \Delta R + \frac{dv}{dt} \ \Delta t\)

       Δv = \(\frac{1}{t} \ \Delta R + \frac{R}{t^2 } \ \Delta t\)

         Δv = \(\frac{ 8.6}{720} + \frac{172.82 \ 20}{720^2 }\)

         Δv = 0.013 m / s

the measurement result is

         v = (0.24 ± 0.01) m / s

Answer:

there very old

Explanation:

Around 9.588 g of bromine will be produced when 50.0 ml of 1.20 mol/L potassium bromide solution reacts with 50.0 ml of a 1.20 mol/L solution of acidified NaClO.

The reaction between potassium bromide (KBr) and sodium hypochlorite (NaClO) in the presence of acid is a redox reaction, which results in the formation of bromine (Br2) and sodium chloride (NaCl). The amount of bromine produced can be calculated using the stoichiometry of the reaction.

First, the number of moles of potassium bromide (KBr) can be calculated using the molarity and volume of the KBr solution:

Moles of KBr = Molarity x volume

= 1.20 mol/L x (50.0 ml / 1000 ml/L)

= 0.0600 mol

Since the reaction is 1:1 between KBr and NaClO, the same number of moles of bromine will be produced. The mass of bromine can be calculated using the moles and molar mass of bromine:

Mass of Br2 = Moles of Br2 x Molar mass of Br2

= 0.0600 mol x 159.80 g/mol

= 9.588 g

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Answer:

Answer in below and plz mark me as brainlist plz

Explanation:

The rate of change of momentum =tm(v−u) Rate of change of momentum = force applied. Force∝tm(v−u) Velocity is the rate of change of displacement and acceleration is the rate of change of velocity. Impulse is a change in momentum

The rate of change of momentum =tm(v−u) Rate of change of momentum = force applied. Force∝tm(v−u) Velocity is the rate of change of displacement and acceleration is the rate of change of velocity. Impulse is a change in momentum

Answer:

C. 2 N left

Explanation:

Subtract the smaller number from the bigger number, the difference will go to the side with the larger number.

Answer:

Explanation:

If a baseball is hit into the air with a velocity of 27 m/s, we want to determine the maximum height of the ball. Using the projecile formula;

Max height H = u²/2g

u is the initial velocity of the body = 27m/s

g is the acceleration due to gravity = 9.81m/s²

H = 27²/2(9.81)

H = 729/19.62

H = 37.16m

Hence the ball went 37.16m high

1) The length of the wire needs to be measured and varied (this is order to get a complete set of results for your experiment )2) Then go through each length of wire and measure the current and potential difference for each wire. (in order to calculate resistance later )3) repeat multiple times for each length of wire in order to create an average = sum/n (if need be explain difference between accuracy and precision).4)calculate resistance using equation resistance * current = Voltage for each length of wire

Hazards: Electric shock due to current , overheating wire can overheat , can be minimised by using low currents.

As the length of the nichrome wire will increase then the resistance in the wire will also increase and if the length of the nichrome wire will decrease then the resistance in the wire will also decrease because the resistance is directly proportional to the length of the wire.

A force that opposes the flow of current is electrical resistance, often known as resistance to electricity. It acts as a gauge for how challenging it is for current to flow in this fashion. Ohms (Ω), which represent resistance values, are used.

Electricity will move from high to low when an electron difference exists between two terminals. This flow is opposed by resistance. Lower currents occur at higher resistance levels. The opposite is also true: the current increases as the resistance decreases.

As the length of the wire increase then the resistance increases automatically similarly if the length is reduced the resistance will also get reduced because length is directly proportional to the resistance in the wire. One more thing is that if the resistance in the wire increase then the heating in the wire will also increase and vice versa because resistance in the wire is directly proportional to the heating effect in the wire.

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Answer:

The Internal energy of the gas did not change

Explanation:

In this situation the Internal energy of the gas did not change and this is because according the the first law of thermodynamics

Δ U = Q - W  ------ ( 1 )

Δ U  = change in internal energy

Q = heat added

W = work done

since Q = W.  the value of ΔU  will be = zero   i.e. No change

Answer:

the matter is made into paper

Explanation:

Answer:

The surface tension of plain water can cause a needle to float.

Evidently, the addition of detergent to the water reduces the surface tension of the liquid causing the needle to sink.

When we add detergent to water, the surface tension of water immediately decreases, then the surface tension cannot balance the blade and it will sink.

Surface tension is defined as the phenomenon that occurs when the surface of a liquid is in contact with another phase which may also be a liquid. Liquids obtain the least possible surface area while the surface of the liquid behaves like an elastic sheet.

Surface tension depends not only on the forces of attraction between particles within a given liquid but also on the forces of attraction of the solid, liquid or gas in contact with it where energy is responsible for the occurrence of surface tension, which can be thought of as approximately equal to the work or energy required to remove a surface layer of molecules in a unit area.

When we add soap to water, the surface tension of the water decreases to the point where the surface tension is no longer strong enough to "float" the needle.

Thus, when we add detergent to water, the surface tension of water immediately decreases, then the surface tension cannot balance the blade and it will sink.

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Answer:

Angular momentum is a vector quantity, meaning it has both magnitude and direction. The magnitude of angular momentum is given by the product of the moment of inertia and the angular velocity. Mathematically, it is represented as:

L = I * ω

where:

L is the angular momentum,

I is the moment of inertia, and

ω (omega) is the angular velocity.

The moment of inertia represents the rotational inertia of an object and depends on both the mass distribution and the axis of rotation. It is denoted by the symbol I.

The angular velocity (ω) represents how fast an object is rotating and is measured in radians per second.

The magnitude of angular momentum (L) depends on the values of the moment of inertia and the angular velocity. Increasing either the moment of inertia or the angular velocity will result in an increase in the magnitude of angular momentum.

It's important to note that angular momentum is conserved in a closed system when no external torques are acting on it. This conservation principle means that the total angular momentum of a system remains constant unless acted upon by external influences.

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The other force that must be happening in accordance with Newton's third law is that the wheelchair is pushing on Darnel (option A).

Force is a push or a pull that acts upon an object as a results of its interaction with another object.

Newton's third law states that for every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.

Whenever objects A and B interact with each other, they exert forces upon each other. For example, Darnel is pushing on his friend's wheelchair, the wheelchair exerts an upward force on Darnel.

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The biker's kinetic energy at the bottom of the hill is 210 J.

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

So, as the biker travels down the hill, her potential energy (PE) transforms into kinetic energy (KE).

At the top of the hill, her PE is 360 J, and she loses 150 J to heat,

so her remaining energy is 360 J - 150 J = 210 J.

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Answer:

Change in velocity, change in direction, change in both velocity and direction

Explanation:

Total Cost is =  $107,380 if The farm is 340 acres and had corn planted  add fertilizer to the soil before you plant this years' crop.

A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".

Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.

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The necessary distance for the block to land on the toboggan is (a) D = sqrt(vo^2/(2g) - H), while the resulting velocity of the block and toboggan after they stick together upon landing is (b) v = sqrt(2gh - 2gD + vo^2).

To solve this problem, we can apply the principle of conservation of energy, which states that the total energy of a closed system remains constant. Initially, the system consists of only the block of mass M1, which has kinetic energy due to its constant speed vo. At the end, the system consists of both the block and the toboggan, which have gravitational potential energy due to their height above the ground. We can set these two energies equal to each other and solve for D to find where the block will land on the toboggan.

(a) The gravitational potential energy of the block and toboggan when they are at height H above the ground is:

U = (M1 + M2)gh

where g is the acceleration due to gravity. Since the block is traveling horizontally with constant speed, it has no change in potential energy. Thus, we can equate the initial kinetic energy of the block to the final potential energy of the system:

1/2 M1 vo^2 = (M1 + M2)gh

Solving for distance D, we get:

D = sqrt(vo^2/(2g) - H)

(b) Since the block sticks to the toboggan, the total mass of the system is now M = M1 + M2. The initial kinetic energy of the block is now shared by the block and toboggan. Let v be the velocity of the block and toboggan after they stick together. By conservation of energy:

1/2 M1 vo^2 = Mg(H - D) + 1/2 Mv^2

where the first term on the right side is the gravitational potential energy of the block and toboggan after they land on the toboggan, and the second term is their kinetic energy. Solving for velocity (v), we get:

v = sqrt(2gh - 2gD + vo^2)

Therefore, The first answer gives the distance D in terms of the initial velocity vo, height H, and acceleration due to gravity g for the block to land in the center of the toboggan. The second answer gives the resulting velocity v of the block and toboggan, taking into account the height H, initial velocity vo, and distance D from the base of the cliff to the center of the toboggan.

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Answer:

1000kg

Explanation:

I'm smart I am a genius I know everything so I know it is 1000kg

Answer:

1) wave length

2) parallel reflection

Answer: 1. The field energy will increase

2. The energy increases, and the lines of force are denser

3. It points toward the field of earths magnetic poles

4. 1 and 2 only

5. 2, 4, 1, 3

Explanation: just took it

The periodic table is an arrangement of elements into groups and periods based on their periodic properties. Elements a placed in these groups and periods.

1) A negatively charged ion is chloride

2) Moving from left to right, valence electrons increase by one.

3) The period number gives information about how many energy levels it has

4) Fluorine has a charge of 1–

5) Potassium and iodine form an ionic bond.

In the periodic table, elements are arranged in groups and periods. There are 18 groups and 8 periods.

Chlorine is in group 17, there have seven outermost electrons hence the chlorine atom needs only one more electron in order to attain a stable octet. This is done by accepting one electron to form the negatively charged chloride ion.

As we move from one period to another, one extra electron is added to the outermost shell of elements. Hence, the valence electrons increases by one.

The period to which an element belongs shows you the number of shells or energy levels in the atom of that element.

Fluorine is in group 17. One electron is needed to achieve a stable octet. When an atom accepts one electron, its charge is 1–.

Bonding based on ionic charges occurs between metals and nonmetals. Potassium is a metal of group 1 and iodine is a non metal of group 17 hence they can bond together based on their ionic charges.

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