PLEASE ANSWER ASAP I will give 30 points
Many scholars and historians see Florence, Italy as the “New Athens” and the center of the Renaissance. Why would Florence receive this title and how did Florence live up to it?

The scientific experiment is limited due to common sources of errors.

The use of unreliable measurement equipment is one of the causes of incorrect data . Instrumental, environmental, procedural, and human errors are frequent causes. Depending on how they impact the outcomes, each of these mistakes can either be random or systematic. Additionally, mistakes might be made when capturing observations or data. In doing an experiment on the exchange of energy between colliding objects, something unexpected happened.

In this experiment, the observation technique or the equipment used to record the data are wrong, which gives us false findings, leading us to the conclusion that the scientific experiment is constrained by the usage of the same observation technique and instrument.

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It is false to say that the right hand should be at 5 o'clock and the left hand should be at 12 o'clock on the steering wheel.

Regardless of which way they're turning, the NHTSA advises drivers to use the areas of the steering wheel between "11 and 8 o'clock" with their left hand and "1 and 8 o'clock" with their right.

Injury prevention is aided by using the push/pull or hand-to-hand steering techniques.

holding the wheel with one hand

Retract your hands. You presumably learned to hold onto the steering wheel with your hands around 10 and 2 o'clock. The National Highway Traffic Safety Administration (NHTSA) currently suggests that drivers place their hands at 9 and 3 o'clock.

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Answer:

Erosion

Explanation:

Sedimentary rocks are created from the build up of sediments, such sediments can be found in stuff like soil, other rocks and many more. Erosion is involved in these type of rocks because the byproduct of erosion are sediments.

Answer:

Rivers... and Windstorms....

Explanation:

I just did it a p e x

Answer:

b Wind blowing West to East away from horse latitudes

Explanation: prevailing Westerlies are winds which blows away from the horse latitudes, this type of wind blow towards the poles between latitude 30 degrees to latitude 60degrees.

Prevailing Westerlies are known to be strongest in the winter months in the and weakest in the summer months

They are also very strong when the pressures are low over the poles and also very weak when the pressures are high over the poles.

The work done by F is 4472.4J.The work done by the normal force is 0J.The work done by the gravitational force is 0J.The  friction force is ineffective as the object is not in contact with surface.

The energy that is transmitted to or from an object when a force is applied along a displacement is referred to as work in physics.In its simplest form, it is usually explained as the result of force and displacement. Positive work is the term for the component of a force that moves the point of application when it is applied. A force is said to do negative work if, at the point of application, one of its components points in the opposite direction of the displacement. Work is a scalar quantity, hence it only has magnitude and no direction. Through work, energy is transported from one place or one form to another.

Calculations:

a)

d = distance travelled = 5.6 m

Work done by the applied force F is given as,

Wa = F d Cos\theta = (1000) (5.6) Cos37 = 4472.4 J

b)

Work done by the normal force Fn is given as,

Wn = Fn d Cos90 = Fn (5.6) Cos90 = 0 J

c)

Work done by  the gravitational force "mg" is given as,

Wg = mg d Cos90 = mg (5.6) Cos90 = 0 J

d)

Using the equilibrium of force in vertical direction,

Fn + F Sin\theta = mg

Fn + 1000 Sin37 = 50 x 9.8

Fn = - 111.82 N

Frictional force will be ineffective since the object is not in touch with the surface and normal force is negative.

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Answer:

That is when your fingers are bent in a weird way and are distorted...

Explanation:

Answer:

Sorry for being late. Hope this helps

Explanation:

2. The value of n is 7

Momentum is defined as the product of mass and velocity. It is expressed as

Momentum = mass × velocity

We can obtain the value of m and n by simply obtaining the momentum in scientific notation. This is illustrated below:

Momentum = mass × velocity

Momentum = 4.5×10⁵ × 8.3×10¹

Momentum = 3.735×10⁷ Kg⋅m/s

Thus, the value of m and n are: 3.735 and 7

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The amount of force exerted on a cart that is full of groceries of mass of 180.0kg is 630N.

The force applied on an object can be calculated by multiplying the mass of the object by the acceleration as follows:

Force = mass × acceleration

According to this question, a cart is full of groceries and has a mass of 180.0kg. The force, if cart accelerates at a rate of 3.5 m/s², can be calculated as follows:

Force = 180kg × 3.5m/s²

Force = 630N

Therefore, the amount of force exerted on a cart that is full of groceries of mass of 180.0kg is 630N.

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Answer: Don't worry I'm here to save u the answer is lithosphere (D) :D

Explanation: I have once done this question and got it right!

the final velocity of the combined gliders is  -0.392m/s.

perfectly inelastic collision - It is the process of striking one object to another without conserving the kinetic energy of two object.

m₁ =  0.240 (mass of first glider)

v₁ = - 0.6m/s ( velocity of first glider)

m₂ =0.260 (mass of 2nd glider)

v₂ = 0.2 m/s ( velocity of 2nd glider)

[tex]v_{f}[/tex] = ?

for perfectly inelastic collision

m₁v₁ + m₂v₂ = (m₁+ m₂)[tex]v_{f}[/tex]

[tex]v_{f}[/tex] = m₁v₁ + m₂v₂ /(m₁+ m₂)

  [tex]v_{f}[/tex]  =   [tex]\frac{0.240*(-0.6+0.260*0.2)}{0.240+ 0.260}[/tex]

  [tex]v_{f}[/tex] = -0.392 m/s

the final velocity of the combined gliders is  -0.392m/s.

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Answer:

KE=800,000

Explanation:

The formula for kinetic energy is KE=1/2mv^2 or Kinetic Energy= 0.5*mass*velocity^2

so 1000 is the mass and 40 is the velocity

KE=0.5*1000*40^2

KE=0.5*1,000*1,600

KE=800,000 Joules

Answer:

C- 60 N to the left

Explanation:

there is a 60n arrow to the left of the box

Answer:

(a) Picture Attached

(b)

i. 30 Nm

ii. Distance between A and M = 0.375 m

Explanation:

(a)

The other two forces are as follows:

1. The weight of wheel barrows acting downward at Point m

2. The Normal Reaction acting upward on wheel

These are show in the picture attached in solution.

(b)

i-

Now, for the moment of 20 N force about the point A:

[tex]Moment = Fd\\\\where,\\\\F = Force = 20\ N\\d = perpendicular\ distance between\ force\ and point\ A = 1.5\ m\\Therefore,\\Moment = (20\ N)(1.5\ m)[/tex]

Moment = 30 Nm

ii.

We take the sum of all moments about point A. Taking counter-clockwise direction as positive:

[tex](Weight)(AM) - Moment\ due\ to\ 20\ N Force = 0\\(80\ N)(AM) = (30\ Nm)\\AM = Distance\ between\ A\ and\ M = \frac{30\ Nm}{80\ N}\\\\[/tex]

Distance between A and M = 0.375 m

We have vector [tex](17.9*cos80^{0},17.9*sin80^{0})[/tex]

Therefore,

x component = 17.9 * cos80 degree = 3.108

y component = 17.9 * sin80 degrees = 17.628

An object with both magnitude and direction is referred to be a vector. A vector can be visualized geometrically as a directed line segment, with an arrow pointing in the direction and a length equal to the magnitude of the vector. The vector points in a direction from its tail to its head.

If the magnitude and direction of two vectors match, they are the same vector. This shows that if we move a vector to a different location without rotating it, the final vector will be the same as the initial vector. The vectors that denote force and velocity are two examples. The direction of force and velocity are both fixed. The size of the vector would represent the force's strength or the velocity's corresponding speed.

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The Average Speed of the Porg is 3.8 m/s.

Let us say that the initial speed is u which is equal to 0.8 m/s and the final speed of the porg to be v which is equal to 6.8 m/s.

The total time period of the motion is given to us as 5 seconds. Let us represent the acceleration of the body as a, acceleration of the body given is 1.2m/s².

Here since the direction of the motion is not changing and the acceleration is constant, we can use the kinematic equations of motion.

Let say that the body covers distance d in 5 seconds.

To find the distance covered by the body we will use the equation,

v²-u²=2da

Putting all the values,

(6.8)²-(0.8)²²=2(1.2)d

46.24 - 0.64 = 2.4d

45.6 = 2.4d

d = 19m

The distance covered by the porg is 19 meters.

Now let say Average Speed is S.

As we know, the average speed of the body (S) = Total distance covered(d)/total time taken(t)

S = d/t

Average speed = 19/5

Average sped = 3.8 m/s.

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There is no electric field inside a hollow plastic ball of radius r that has charge q uniformly distributed on its outer surface.

The hollow plastic ball has no electric field inside of it.

There is no charge inside the ball because the charge is only present on the ball's surface.

Gauss's Law

The total charge contained by a closed surface is equal to Q/0 times the electric flux out of the surface, according Gauss's Law. According to mathematics, the electric flux is the result of the electric field E and the surface area A, and is represented as follows:

Electric field E thus equals zero.

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Answer: E 1.29 N•s

Explanation: math

Answer:

Nuclear fusion is difficult to achieve because at low temperatures and pressures  the positively charged nuclei of deuterium and tritium electrostatically  each other is explained below in complete details.

Explanation:

For nuclear fusion to happen, very eminent temperatures are needed to succeed the opposing force between the positively energized nuclei of a specific isotope.  Fusion doesn't release dangerous toxins like co2 or other greenhouse gases into the environment. Its significant by-product is helium: an inactive, non-toxic gas. No long-lasting radioactive ruin: Nuclear fusion reactors generate no high action, long-lived nuclear ruin.

Answer:

repel

Explanation:

its called electrostatic repulsion

Answer:

f=ma

f=70N

m1=50kg

m2= 60kg

a1= f/m

a1= 70/50

a1= 1.4N/kg

a2= 70/60

a2=1.17N/kg

When a person carrying the opposite charge contacts the inner surface of the sphere, the charge jumps to the metal, causing a minor shock.

The charge present on the hollow sphere always remain on its outer surface, and there will be no charge on its interior surface. Because there is no charge on the interior surface of the sphere, touching it will not cause harm. When a person with the opposite sign of the same magnitude charge comes into touch with the sphere, both the sphere and the person are neutralized. It only causes a minor shock when there is difference in magnitude. If no one touches the sphere, the charge on the outside surface will be zero, while the charge on the inside surface will be positive.

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most fossils are found in sedimentary rocks

Answer:

Sedimentary rock.

Explanation:

Answer:

Mercury shows faster increase in temperature than water on heating because the mercury has less specific heat capacity than water.

The specific heat capacity is defined as the amount of heat to required by a mass of a material to make a unit change in its temperature.  Mercury has less specific heat capacity and shows immediate changes in the temperature. Because of this mercury is used in thermometers and not water.

The correct answer is It has equal numbers of neutrons and protons.

A characteristic that can be physically determined, the atomic mass of an atom is equal to the total mass of the protons, neutrons, and electrons that make up the atom. The number of protons in the atom's nucleus is indicated by the atomic number. It is equal to the atomic number in value. Moving over the periodic table causes the nuclear charge to grow. The charge is filled when the electrons approach the protons.

The protons and neutrons of an atom are added to determine the mass number. Therefore, the mass number for each atom will be twice the atomic number (number of protons) if the number of protons (atomic number) and neutrons are identical.

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Answer:

8.79 J

Explanation:

Given that a slinky is traveling down the stairs, like in the video clip below. What is the total KINETIC ENERGY of the slinky at the bottom of the stairs (just before it stops moving) IF the Height of the stairs is 2 meters, the weight of the slinky is 4.41 Newtons, its spring constant is 0.84 N/m, and the distance the slinky is initially stretched (to get it going) is 0.25 meters??

Total energy = mgh

Total energy = 4.41 × 2 = 8.82 J

Elastic potential energy = 1/2 × Ke^2

Elastic potential energy = 1/2 × 0.84 × 0.25^2

Elastic potential energy = 0.02625

Also,

Total energy = P.E + K.E

Substitute them into the formula above

8.82 = 0.02625 + K.E

K.E = 8.82 - 0.02625

K.E = 8.79375

K.E = 8.79 J

Therefore, the KINETIC ENERGY of the slinky at the bottom of the stairs is 8.79 Joules approximately

Conserving fuel is important because burning fuel adversely affects the environment.

When fossil fuels are burned, they release large amounts of carbon dioxide which is a greenhouse gas into the surrounding environment. Greenhouse gases trap heat in the atmosphere that is responsible for global warming. Due to this burning of fuel, a large number of glaciers start melting which leads to drowning of coastal areas and large number of floods.

So we can conclude that Conserving fuel is important because burning fuel adversely affects the environment.

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Answer:

a. La ciencia.

Explicación:

El método científico de la física experimental y su búsqueda de respuestas tiene un principio básico que es la ciencia. La ciencia es la aplicación del conocimiento del mundo natural y social siguiendo una metodología sistemática basada en evidencias. Sin evidencias no hay aceptación de la observación ni se debe hacer teoría porque la evidencia es el principal criterio para aceptar o rechazar una hipótesis.