Identifying Characteristics of Solids
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The atoms in a solid
The arrangement of atoms in a solid causes it to have a definite
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solids.??? Please help
Me it’s due RN

The distance and Displacement travelled by skier is 17m and 16 m

Distance is the length of the actual path taken by object.

Displacement is the shortest distance between the initial and final position.

The SI unit of both distance and displacements is meter (m).

In this case,

Distance = 32m - 65m + 16 m

                 = 17 m

Here ,

Displacement  = Initial position - Final position

= 32m -16m  = 16m

Hence , The distance and displacement of the skier are 17m and 16m.

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The speed of the wave created by Linh in the spring by moving the other end right and left with a frequency of 2 Hz is 1m/s.

The speed of a wave can be calculated by using the following formula:

Speed = Wavelength x Frequency

According to this question, Linh creates waves in the spring by moving the other end right and left with a frequency of 2 Hz. If wave crests are 0.5 m apart, the speed can be calculated as follows:

speed = 2Hz × 0.5m

speed = 1m/s

Therefore, the speed of the wave created by Linh in the spring by moving the other end right and left with a frequency of 2 Hz is 1m/s.

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Answer:

m/s

km/h

mph

Explanation:

speed is measured with distance which does in velocity too that is why I chose this answer

(a) The initial speed at which the bottles are launched is 4.27 m/s.

(b) The horizontal displacement at which the bottle land is 1.75 m.

The initial speed of the bottle is calculated as follows;

[tex]T = \frac{2usin\theta}{g}[/tex]

where;

2usinθ = Tg

u = Tg/(2sinθ)

u = (0.5 x 9.8)/(2 x sin35)

u = 4.27 m/s

X = u²sin(2θ)/g

X = (4.27² x sin(70))/(9.8)

X = 1.75 m

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Answer:

fv nfv f n f vjrkfv frnv thrfn htrfn vt

Explanation:

v ntv tfrv tn vtv jr4v t5o vtv tv tv

The SI unit of mass is the kilogram

The spring constant, k will be 18 N/m.The ratio of force to one unit of displaced length is known as the spring constant.

Spring constant is defined as the ratio of force per unit displaced length.

Given data;

Mass of  block,m=0.250 k

Amplitude,A = 0.125 m

Velocity,V=3.00 m/

Spring constant,K=?

The formula for the spring constant when the spring is oscillate at the given amplitude A:

[tex]\rm K = \frac{V_{max}^2 m}{A} \\\\ K = \frac{3.0 \times 0.250}{0.125} \\\\ K=18 \ N/m[/tex]

Hence, the spring constant, k will be 18 N/m

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The efficiency of the steam engine is 78.9%.

The efficiency of a machine is a measure of the useful work done by the machine as against the work input into the machine.

Work output of the steam engine = 225 K

Work input of the steam engine = 285 K

The efficiency of the machine = 225/275 × 100% = 78.9%

Therefore, the efficiency of the steam engine is 78.9%.

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Explanation:

The mass written on the periodic table is an average atomic mass taken from all known isotopes of an element. This average is a weighted average, meaning the isotope's relative abundance changes its impact on the final average. The reason this is done is because there is no set mass for an element.

Answer:

three properties of intrinsic semiconductor

Answer: 5

Explanation: If you use a real graph it could be easier to check, but here’s it the easy way.

You start at 0, add 3 as you are going right on the right , subtract 4 as you are going left, then again add 6 as you are going right, and you should get 5.

0+3= 3

3-4= -1

-1+6= 5

The angles in the triangle are 91 degrees, 53 degrees and 36 degrees respectively.

From the cosine rule we know that;

c^2 = a^2 + b^2 - 2abcosC

Since;

a = 0.47 m

b =  0.62 m

c =  0.78 m

Then;

(0.78)^2 = (0.47)^2 + (0.62)^2 - 2(0.47 * 0.62)cosC

0.61 = 0.22 + 0.38 - 0.58 cosC

0.61 - ( 0.22 + 0.38) = - 0.58 cosC

0.01 = - 0.58 cosC

C = cos-1(0.01/-0.58)

C = 91 degrees

Using the sine rule;

b/Sin B = c/Sin C

0.62/sinB = 0.78/sin 91

0.62/Sin B = 0.78

B = sin-1 (0.62//0.78)

B = 53 degrees

Angle A is obtained from the sum of angles in a triangle;

180 - (91 + 53)

A = 36 degrees

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The final force on the rock was smaller than the original force from the person and the distance the rock traveled was greater than the original distance the lever moved, so the total work stayed the same.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

The total work done on the process will be conserved.

The lever is a simple machine which makes work easier by reducing the force applied to the load and increasing the distance traveled by the load.

Thus, the final force on the rock was smaller than the original force from the person and the distance the rock traveled was greater than the original distance the lever moved, so the total work stayed the same.

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The two Health and safety risk at the scene are:

1. To deal with Chemicals.

2. To deal with Electricity.

The healthy and safety risk at the scene or office is described  as safety hazards that has to be taken when employers are working in office in some mechanical or electrical workshops.

Employers need to  e follow some healthy and safety risk while working in office like:

1. Chemicals : When employees have to handle harmful or dangerous chemicals as part of their work. To safety safe the must wear protective clothing.

2. Electrics - Electrical safety is an important issue in workplace , especially where there is a risk that heavy-duty equipment might cause electric shock.

These are some safety hazards employees must follow.

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Answer:

Heat gain = Heat loss

Latent heat of fusion of water = 80 kcal/kg

Specific heat of water = 1 kcal /kg deg C

Heat gain = 1.33 * 80 + (12.4 + 1.33) T = 106 + 13.7 T

Heat Loss = 12.4 * (20 - T) = 248 - 12.4 ΔT

106 + 13.7 T = 248 - 12.4 T

26.1 T = 142

T = 5.4       final temperature

Answer: 10.310406 (works for acellus)

I tried to add an explanation but it wouldn't let me for some reason

Anyways watch the end of the video to see how to get the equation

Explanation:

Given,

To Find:

a) Work done by the pump

b) Potential energy stored in the water

c)Power spent by the pump

d)Power rating of the pump.

Solution:

We know that,

[tex] \rm \: Work \: done = Force * Distance \: moved[/tex]

[tex] \rm \: Work\; Done =(100 \: kg \times \cfrac{10N}{kg} ) \times 60 \: m[/tex]

[tex] \rm \: Work\; Done =1000 \times 60 \: joule[/tex]

[tex] \boxed{\rm \: Work\; Done =60000 \: joule}[/tex]

[The unit'll be joule since N×M = J]

[tex] \rm \: P.E = m \cdot g \cdot h[/tex]

[tex] \rm \: P.E =100 \:kg \: \times \cfrac{10 \: N}{kg} \times 60[/tex]

[tex] \boxed{\rm \: P.E =60000 \: joule}[/tex]

[tex] \rm \: P = W/T[/tex]

[tex] \rm \: P = \cfrac{60000 \: joule}{20 \: seconds} =\boxed{\rm { 3000 \: Watts }}\: or \: \boxed{\rm 3 \: kW}[/tex]

Assumption: The pump is 100% efficient & works well.

The pathogen that immunization helps to prevent is virus.

To reduce the risk of atherosclerosis cut down on saturated fatty foods.

Immunization is defined as the prevention of pathogenic viral organisms from harming a living human host through the exposure of the host to an attenuated form of the virus to develop immunity prior to a future exposure.

Atherosclerosis is the deposition of fatty substances on the arterial wall leading to blocking of the blood vessels.

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Answer:

Acceleration = 2.143m/s²

Explanation:

Vf=Vi+at

(30)=(0)+a(14)

a=2.143m/s²

Answer:

50kg

Explanation:

Force = 100N

Acceleration = 2 m/s2

Mass = ?

From formula,

Force = Mass * Acceleration

100 = Mass * 2

Mass = 50 kg

Hence ,mass of object is 50 kg.

Force(F) = 100N

Acceleration(a) = 2 m/s2

Mass(m) = ?

We know,

F = ma

100 = m x 2

m = 100/2

m = 50kg

Hence ,mass of object is 50 kg.

Answer:

50 kg

Explanation:

Force(F) = 100N

Acceleration(a) = 2 m/s2

Mass(m) = ?

We know,

F = ma

100 = m x 2

m = 50kg

hence ,mass is 50 kg.

The result of 9 ∙ 10-⁵ divided by 3 ∙ 10-⁹ is 3 × 10⁴. Details about exponential functions can be found below.

Exponentiation is the process of calculating a power by multiplying together a number of equal factors, where the exponent specifies the number of factors to multiply.

According to this question, the following exponential function is given:

9 × 10-⁵ ÷ 3 × 10-⁹

9/3 × 10-⁵+⁹

3 × 10⁴

Therefore, the result of 9 ∙ 10-⁵ divided by 3 ∙ 10-⁹ is 3 × 10⁴.

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An argument about the likely kinetic energy of the ball before and after the collision with the can is can remain the same, halved and completely transferred.

In physics, we understand as a collision process the interaction between two or more bodies, initially free (that is, there is no interaction between them). Collision is usually divided into three categories: elastic collision, partially elastic collision and inelastic collision.

Analyzing for each of these cases we have that the kinetic energy before and after the collision will be:

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When living beings require energy, they require oxygen for breathing. The form in which oxygen is released back into the environment is carbon dioxide.

A vehicle built for use outside the atmosphere of the planet.

In pressurized tanks located outside the airlock of the station, the ISS gets a regular supply of oxygen from the planet.

These aren't enough to keep the station stocked for a long time, but they are plenty to keep topping the tank off because there are occasionally leaks.

Hydrogen and carbon dioxide combine to form biomass when oxygen is released into the environment.

Living beings need oxygen for breathing when they require energy. Carbon dioxide is the form in which oxygen is released back into the atmosphere.

Hence, oxygen is a must in the air supply aboard spacecraft,

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Cause of high probability of accidents of loaded vehicles in over speed effected by momentum on the basis of first law of motion.

When we are standing inside a bus and it brakes abruptly, due to inertia, we are thrown forward. When a car is going around a curve it is necessary for a force to act, otherwise the car will go in a straight line.

the cause of high probability of accidents of loaded vehicles in over speed occurs large amount of momentum.

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Answer:

65

Explanation:

Based on the calculations, the acceleration of this block as it slides down from the friction less ramp is equal to 0.85 m/s².

In order to determine the acceleration of this block, we would apply Newton's Second Law of Motion while taking moment about the tensional force.

The vertical component of the tensional force that is acting on the block as it slides down from this friction less ramp is given by:

T = Ma - Mgsinθ

0 = Ma - Mgsinθ

Ma = Mgsinθ

a = gsinθ

Substituting the given parameters into the formula, we have;

a = 9.8 × sin25

a = 9.8 × 0.4226

Acceleration, a = 0.85 m/s².

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Answer:

Showing results for Two point charge q, separated by 1.5cm have change value of +2.0 and -4.0AND/C respectively what is the magnitude of the Electric force midway between them?

Search instead for Two point charge q, seperated by 1.5cm have change value of +2.0 and -4.0N/C respectively what is the magnitude of the Electric force midway between them?

Answer:

x(t) = t^2 - 2 t + 1       given

v = dx / dt = 2 t - 2 = 0

t = 1  

It comes to rest after 1 second

Based on this information, a psychologist would most likely conclude that Jonah's stress led him toward positive personal changes.

When a person is afraid or tensed about something, he overthinks about him and become stressed.

Anxious to the point that he couldn't eat very well without his stomach feeling queasy. As a result of his stress, Jonah increased his time of practicing basketball and asked an old team member to help him develop new skills he needed in order to make the team. After hearing that he made the basketball team a day after tryouts, Jonah went out for a large pizza with the rest of the team players.

As, he is feeling good, he wants to celebrate himself. So, he went to eat pizza with his team players. This shows that he is not stressed but happy.

Thus, ,this information depicts that Jonah's stress led him toward positive personal changes.

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The surface of the stone which he should put on the ground is the base.

This is defined as the flat end which is usually located at the bottom with a larger surface area.

The large surface area helps to distribute the forces on all parts thereby preventing it from sinking.

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