T/F : Staleness and burnout are not associated with overtraining.

The teacher is instructing the students in the syntax of italian.

Adjectives are words that are used in English language to modify or describe a noun or a pronoun. Usually, adjectives are placed before the nouns they modify.

But creation of sentence, using words, to form a meaning the adjective can be placed after a noun. This is seen in formation of sentences using Italian language.

Syntax is the arrangement of words to creat a meaningful sentence. The most basic syntax follows a subject + verb + direct object formula.

Therefore, the teacher is instructing the students in the syntax of italian.

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Answer:

d. syntax

Explanation:

The extension of the spring when the ball is allowed to hang straight down, motionless is 0.0032 m.

The given parameters;

The radius of the circular path when spring is stretched is calculated as;

R = l₁ + x

R = 0.201 + 0.0176

R = 0.2186 m

The spring constant is calculated as follows;

\(F = ma\\\\Kx = \frac{mv^2}{R} \\\\K = \frac{mv^2}{Rx} \\\\K = \frac{(3.41)^2 m}{0.2186 \times 0.0176} \\\\K = 3,022.4 m \ N/m\)

The extension of the spring when the ball is allowed to hang straight down, motionless;

\(F = mg\\\\Kx=mg\\\\x = \frac{mg}{K} \\\\x = \frac{9.8 m}{3022.4 m} \\\\x = 0.0032 \ m\)

Thus, the extension of the spring when the ball is allowed to hang straight down, motionless is 0.0032 m.

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A car with a mass of 950 kg is moving at 20 m/s when that collision with another car with a mass of 1000 kg that is moving at 15 m/s. The speed of each car prior to the collision was 2.05 m/s.

A collision, also referred as an impact, seems to be the abrupt, violent coming together in close proximity of two bodies. Examples include two pool cues, a tennis club and a ball, as hammer but a nail hammer, and two transport vehicles when they are linked.

The forces involved in a collision are equal in size and directed in the opposite direction, and they accelerate both objects. Each object accelerates equally in collisions with things of equal mass.

Momentum

m1V1 = 950 Kg * 20 m/s

= 19000 Kg*m/s

momentum = m2V2

= 1000kg*15m/s

= 15000 Kg*m/s

momentum before = (19000–15000)kg-m/s

= 4000kg-m/s

momentum after = ( 950 + 1000)V3

momentum after = momentum before

= V3

= 4000/1950

= 2.05 m/s

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Answer:

Silicon was touted as the revolutionary material that can do wonders in the tech industry.

Explanation:

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground (\(t\)), measured in seconds, which is determined by the following kinematic formula:

\(t = \frac{v-v_{o}}{g}\) (1)

Where:

\(v_{o}\), \(v\) - Initial and final speeds of the baseball, measured in meters per second.

\(g\) - Gravitational acceleration, measured in meters per square second.

If we know that \(v_{o} = 0\,\frac{m}{s}\), \(v = 17\,\frac{m}{s}\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the time spent by the baseball is:

\(t = \frac{17\,\frac{m}{s}-0\,\frac{m}{s} }{9.807\,\frac{m}{s^{2}} }\)

\(t = 1.733\,s\)

The baseball was falling during 1.733 seconds.

Answer:

The electricity produced from the main source which is an electrical generator which is usually close a remote abundant source of natural energy or at a distant location away from the residential areas where the electricity is used

The step up transformer is  the device used to raise the voltage and therefore lower the current of the of incoming generated electricity before it is transmitted through high tension cables so that the energy loss from source to destination is reduced and the electricity generated can applied where needed

However, the high voltage transmitted along power lines to reduce energy loss cannot be used as it is by the consumer, partly because it is very harmful in the event of an electric shock and can easily damage household electrical devices, therefore, the high voltage in the power lines is reversed back or lowered into voltages which can be used to power electrical devices in buildings with the use of a step-down transformer

Explanation:

Answer:

Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen, and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.

Explanation:

Answer:

17,190 years old

Explanation:

D

Answer:

32 four ounce servings

Explanation:

if you take the total amount of ounces the carton holds (128 ounces)and divide it by the number of ounces the son consumes per serving(4ounces) you will get the total amount of servings(32servings)

effort distance/resistance distance or length of ramp/height of ramp or dE/dr  is correct for calculating the ideal mechanical advantage

Theideal mechanical advantage would not have any friction. this is due to the fact that some of the effort put into the machine is lost trying to overcome friction.

ideal mechanical advantage is denoted by the sign IMA, that ignores the drawbacks of friction.

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Explanation:

i think it will be on the ground

There would be three force vectors on the free-body diagram of the arrow. They are the thrust force vector, the weight force vector, and the air resistance force vector.

In the given scenario, when an arrow has just been shot from a bow and is now traveling horizontally while air resistance is not negligible, the free body diagram of the arrow would consist of three force vectors. They are explained below:

1. Thrust force vector:It is the force applied to an object by a propulsive object such as a rocket engine or a jet engine. In the given scenario, the thrust force is applied to the arrow from the bow.

2. Weight force vector:It is the force exerted by gravity on an object. The weight of the arrow depends on the mass of the arrow and the acceleration due to gravity.

3. Air resistance force vector:It is the force that opposes the motion of an object through the air. In the given scenario, the air resistance force vector is acting in the direction opposite to the motion of the arrow due to the presence of air resistance.

In conclusion, there would be three force vectors on the free-body diagram of the arrow. They are the thrust force vector, the weight force vector, and the air resistance force vector.

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Answer:

3.3m/s

Explanation:

speed =Distance /Time

x=400m

t=2mintues=2min*60sec/min=120seconds

S=400m/120s

S=3.33333...

therefore speed = 3.3m/s

The speed of an object is the distance divided by the time of travel. The speed of the person running 400 meters in 2 minutes is 3.3 m/s.

Speed is a physical quantity used  to measure the distance covered per unit time. Speed is a scalar quantity thus, having magnitude only. The rate of speed is called velocity. Velocity is a vector quantity.

Speed in physics is the ratio of the distance covered per unit time. Thus, speed can have the units m/s, Km/hr, ft/s miles/s etc. As the time of the travel increases, speed is said to be decreasing.

The distance covered  = 400 meters.

time = 2 minutes = 2 × 60 s = 120 s

Speed = distance / time

           = 400 m/ 120 s

           = 3.3 m/s.

Therefore, the speed is 3.3 m/s.

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Answer:

Work hasn't been done by Michael because no distance was covered.

Explanation:

Workdone is given by the formula;

\( Workdone = F * s\)

Where;

W is the work done

F represents the force acting on a body.

s represents the distance covered by the body.

Hence, work hasn't been done by Michael because no distance was covered, as the table didn't move at all. Therefore, work done is zero.

Answer:

a = 7.5 [m/s²]

Explanation:

To solve this type of problem we must remember Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F = sum of forces [N]

m = mass = 0.1 [kg]

a = acceleration [m/s²]

Now replacing:

\(0.9-0.15=0.1*a\\a=7.5 [m/s^{2} ]\)

Answer:

The work done by Joel is greater than the work done by Jerry.

Explanation:

Let suppose that forces are parallel or antiparallel to the direction of motion. Given that Joel and Jerry exert constant forces on the object, the definition of work can be simplified as:

\(W = F\cdot \Delta s\)

Where:

\(W\) - Work, measured in joules.

\(F\) - Force exerted on the object, measured in newtons.

\(\Delta s\) - Travelled distance by the object, measured in meters.

During the first 10 minutes, the net work exerted on the object is zero. That is:

\(W_{net} = W_{Joel} - W_{Jerry}\)

\(W_{net} = F\cdot \Delta s - F\cdot \Delta s\)

\(W_{net} = (F-F)\cdot \Delta s\)

\(W_{net} = 0\cdot \Delta s\)

\(W_{net} = 0\,J\)

In exchange, the net work in the next 5 minutes is the work done by Joel on the object:

\(W_{net} = W_{Joel}\)

\(W_{net} = F\cdot \Delta s\)

Hence, the work done by Joel is greater than the work done by Jerry.

An isolated system is completely isolated from its surroundings and no transfer of energy or mass is possible between the system and surroundings.

The law of conservation of energy or the first law of thermodynamics states that the energy can neither be created nor be destroyed, but it can be transformed from one form to another. In other words, the total energy of an isolated system is always conserved.

For example, when you are driving a car or a motorcycle, the chemical energy that was stored either in the fuel or in the battery is getting converted into mechanical energy. Similarly, when an explosion happens, the chemical energy of the fuel is converted into light energy and heat energy.

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To determine the force required to keep a 10 mg water droplet moving in the circular arc created by a shaking dog's fur, we can use the centripetal force formula:

F = m * (v^2 / r)

Where F is the centripetal force, m is the mass of the droplet, v is the velocity of the fur, and r is the radius of the circular arc.

Converting the mass of the droplet to kilograms:

m = 10 mg = 10 * 10^(-6) kg

Substituting the given values:

F = (10 * 10^(-6)) * ((2.5)^2 / 0.16)

Calculating this expression gives us the centripetal force required to keep the droplet moving in the circular arc.

To find the ratio of this force to the weight of the droplet, we divide the centripetal force by the weight of the droplet. The weight of the droplet can be calculated using the formula:

Weight = mass * gravitational acceleration

Let's assume the gravitational acceleration to be approximately 9.8 m/s^2.

Weight = (10 * 10^(-6)) * 9.8

Finally, we can calculate the ratio of the centripetal force to the weight of the droplet by dividing the centripetal force by the weight.

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Answer:

It sticks to the wall due to electrostatics.

Explanation:

When pam rubs a balloon against his hair, and holds it up against the wall, he is basically adding a surplus of electrons which are negative charges to the surface of the balloon.

This motion would make the wall the more positively charged than the balloon. Therefore, when the two charges come in contact with each other, the balloon will stick to the wall because of the rule in electrostatics that opposite charges attract each other.

Answer:

Magnetism causes an attractive force between the balloon and the wall

Explanation:

Answer:

the answer is D

Explanation:

An electric switch is a device that interrupts the electron flow in a circuit. Switches are primarily binary devices: either fully on or off and light switches have a simple design. When the switch is turned off, the circuit breaks and the power flow is interrupted. Circuits consist of a source of power and load.

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Explanation:

When the battery(it store chemical energy) is connected in an electrical appliance and the appliance is switched on, the stored energy in the battery is transferred to the appliance in the form of electrical energy to make it work.

Earth is a good example of inertial frame of reference.

To find the answer, we have to know about the Inertial frame of reference.

Thus, we can conclude that, Earth is a good example of inertial frame of reference.

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If a truck has a linear acceleration of 1.85 m/s² and the wheels have an angular acceleration of 5.23 rad/s², the diameter of the truck's wheels   0.71 m.

Linear acceleration refers to the time rate of change of linear velocity, whereas angular acceleration refers to the time rate of change of angular velocity. This is the primary differential between linear and angular acceleration. Simply said, changes in an object's linear velocity with respect to time are represented by changes in linear acceleration.

The angular acceleration can be deduced immediately from the concept of α =ΔωΔt because the ultimate angular velocity and time are both provided.

The link between linear acceleration (a) and rotational acceleration is expressed as a = r×α . When the angular acceleration increases, so will the linear acceleration's strength. Increased wheel angular acceleration, for instance, denotes an accelerated vehicle.

Linear acceleration is the uniform acceleration caused by a moving body moving along a straight line. There are three equations that are essential in linear acceleration, depending on parameters like start and terminal velocities, displacements, times, and acceleration.

Given :

linear acceleration a = 1.85 m/s²

angular acceleration α  = 5.23 rad/s²

radius r = a/ α  = \(\frac{1.85}{5.23}\) = 0.354 m

diameter  d = 2r = 2 × 0.354 = 0.71 m

diameter of the wheels is  0.71 m.

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the wavelengths in the hydrogen spectrum of the first four members of the series where m=1, the first four members have the wavelength of \(1.464 * 10^7 m,\) \(1.231 * 10^7 m,\) \(1.164 * 10^7 m,\) and \(1.097 * 10^7 m.\)

The wavelengths of the spectral lines in the Lyman series of the hydrogen spectrum can be calculated using the Rydberg formula:

1/λ = \(R * (1/n1^2 - 1/n2^2)\)

Where λ is the wavelength of the spectral line, R is the Rydberg constant (approximately \(1.097 * 10^7 m^-^1)\), and n1 and n2 are positive integers representing the energy levels of the electron in the hydrogen atom.

For the Lyman series, we have m = 1, which means the electron transitions from higher energy levels (n2) to the first energy level (n1 = 1).

Let's calculate the wavelengths for the first four members of the Lyman series:

For n2 = 2:

1/λ = \(R * (1/1^2 - 1/2^2)\)

1/λ = \(R * (1 - 1/4)\)

1/λ = \(R * (3/4)\)

λ = \(4/3R\)

Substituting the value of the Rydberg constant:

λ = \((4/3) * (1.097 × 10^7 m^-^1)\)

λ ≈ \(1.464 * 10^7 m\)

For n2 = 3:

1/λ = \(R * (1/1^2 - 1/3^2)\)

1/λ = \(R * (1 - 1/9)\)

1/λ = \(R * (8/9)\)

λ = \(9/8R\)

Substituting the value of the Rydberg constant:

λ = \((9/8) * (1.097 * 10^7 m^-1)\)

λ ≈ \(1.231 * 10^7 m\)

For n2 = 4:

1/λ = \(R * (1/1^2 - 1/4^2)\)

1/λ = \(R * (1 - 1/16)\)

1/λ = \(R * (15/16)\)

λ = \(16/15R\)

Substituting the value of the Rydberg constant:

λ = \((16/15) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.164 * 10^7 m\)

For n2 = 5:

1/λ = \(R * (1/1^2 - 1/5^2)\)

1/λ = \(R * (1 - 1/25)\)

1/λ = \(R * (24/25)\)

λ = \(25/24R\)

Substituting the value of the Rydberg constant:

λ = \((25/24) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.097 * 10^7 m\)

Therefore, the wavelengths of the first four members of the Lyman series are approximately:

\(1.464 * 10^7 m,\)

\(1.231 * 10^7 m,\)

\(1.164 * 10^7 m,\)

and \(1.097 * 10^7 m.\)

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Answer: A

Explanation:

Answer:

0.832

Explanation:

8.320 x 10 to the negative 1st power is 0.832

Answer:

100/10 = 10 , 10 × 10 = 100÷20 = 5

I'm pretty sure its wrong

The force required to keep the motorcycle moving in a circular path is equal to 2000 N.

The centripetal force can be described as perpendicular to the velocity in a circular motion. If the objects change their speeds in a circular motion and acceleration is produced which is directed toward the center.

The mathematical expression for the centripetal acceleration used:

a = v²/r

Where 'r' is the circle's radius and a is the centripetal acceleration.

Given, the velocity of the motorcycle, v = 20 m/s

The radius of the track, r = 10m

The centripetal acceleration, a = (20)²/ 2×10 = 20 m/s²

The mass of the motorcycle, m = 100 Kg

The force required to produce this acceleration  to keep the motorcycle moving in a circular path at this speed can be calculated as:

F = ma = 100 × 20 = 2000 N

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Explanation:

The terms heavy and light are commonly used in two different ways. We refer to weight when we say that an adult is heavier than a child. On the other hand, something else is alluded to when we say that rock is heavier than soil. A small rock would obviously weigh less than a roomful of soil, but rock is heavier in the sense that a rock of given size weighs more than the same-size sample of soil. What we are actually comparing is the mass per unit volume, that is, the density. In order to determine these densities, we might weigh a cubic centimeter of each sample. If the rock sample weighed 2.71 g and the soil 1.20 g, we could describe the density of the rock as 2.71 g cm–3 and that of the soil as 1.20 g cm–3. Even though sand is made of rock fragments, its density is less because the porosity of sand lowers its bulk density (as shown below). (Note that the negative exponent in the units cubic centimeters indicates a reciprocal. Thus 1 cm–3 = 1/cm3 and the units for our densities could be written as g/cm3, or g cm–3. In each case the units are read as grams per cubic centimeter, the per indicating division.) We often abbreviate "cm3" as "cc", and 1 cm3 = 1 mL exactly, by definition.

Table 1 : Density of Soils and Rocks

sand

1.52

sandy loam

1.44

loam

1.36

silt loam

1.28

clay loam

1.28

clay

1.20

amphibolite

2.79–3.14

dolomite

2.72–2.84

gneiss

2.59–2.84

limestone

1.55–2.75

marble

2.67–2.75

schist

2.73–3.19

shale

2.06–2.67

slate

2.72–2.84

pyrite

5.0

gold