giải giúp em bài này với ạ?

Gii Gip Em Bi Ny Vi ?

Answers

Answer 1

vdjs vs jsbdjskshskjsjdjfodjshsvsjsbdbdn


Related Questions

types of circulatiom

Answers

Systemic circulation, pulmonary circulation, and portal circulation

Describe the role of oceans in the water cycle‽

Answers

Answer:

The ocean plays a key role in this vital cycle of water. The ocean holds 97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation. ... Water evaporates from the surface of the ocean, mostly in warm, cloud-free subtropical seas.

Explanation:

Hope this helps.

The ocean holds 97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation. .Water evaporates from the surface of the ocean, mostly in warm, cloud-free subtropical seas.

Calculate Speed The 2-kg metal ball moving at a speed of 3 m/s strikes a 1-kg wooden ball that is at rest. After the collision, the speed of the metal ball is 1 m/s.
Assuming momentum is conserved, what is the speed of the wooden ball?

Answers

Answer:

53466kg.

Explanatiokn:

HELP PLEASEE !!!! HELP FAST

Answers

Answer:

I'd say 2) "Genes are instructions that cells use to create proteins." Because it's more specific, and that's essentially what it's for.

Answer:

2.

Explanation:

because genes don't create proteins. proteins come from what we take as food.

A student's computational model of a falling object does not account for air flow. Which of the following statements is true? (1 point)
1. This computational model must be redone because this simplification will increase the amount of computational power needed for this program.
2. This computational model must be redone because computational models should not include simplifications.
3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications 4. This computational model is strong because simplifications can make computational models more accurate.​

Answers

Option 3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.

A student's computational model of a falling object does not account for air flow is  " this is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications".

What is computational models?

Using computers to simulate and investigate complicated systems utilizing mathematics, physics, and computer science is known as computational modeling. Numerous variables in a computational model describe the system under study.

In behavioral science, computational modeling aims to employ exact mathematical models to better understand behavioral data. Most frequently, the behavioral data are choices, but they can also be reaction times, eye movements, or other plainly visible behaviors, or even neurological data.

This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.

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A hunter is practicing hitting a target that is down range. If the arrow leaves the bow at a
velocity of 26 m/s at an angle of 40 degrees above the horizontal,

a. Calculate how much time it takes for the arrow to return to the bow level.

b. Find out how far down range the arrow goes.

c. What is the maximum altitude the arrow reaches?

Answers

Answer:

What kind of bow Is he using

If the ambient temp. is 75 F, what is it Centigrade?

Answers

Explanation:

We know

C/5 = F -32/9C/5 = 75 -32/9C/5 = 43/9C ≈ 25°C

A skateboarder rolls off a horizontal ledge that is 1.32 m high and lands 1.88 m from the base of the ledge what was his initial velocity

Answers

initial velocity is 3.62 m/s

help me with b and d please

A 65 kg diver stands still on a tower, 100 m above the water
(a) Calculate the gravitational potential energy of the diver, relative to the height of the water. Assume the gravitational field constant is 9.8 N/kg
(b) The diver reaches the surface of the water at a speed of 14 m/s. Calculate the diver's kinetic energy
(c) Compare your answers to (a) and (b). Explain your comparison using concepts learned in this course.
Assume there is no air resistance during the dive (d) Calculate the speed of the diver 5.0 m above the water.​

Answers

Following are the solution to the given points:

Given:

[tex]\to mass(m)= 65\ kg\\\\\to h=10.0 \ m\\\\\to g=9.8 \ \frac{m}{s^2}[/tex]

To find:

gravitational potential energy(GPE)=?

kinetic energy(KE)=?

concept=?

v=?

Solution:

For point a:

[tex]\to GPE= mgh[/tex]

             [tex]= 65 \times 10 \times 9.8\\\\ = 6370 \ J\\\\[/tex]

For point b:  

[tex]\to KE=\frac{1}{2} m v^2\\\\[/tex]

           [tex]=\frac{1}{2} \times 65 \times 14^2 \\\\=\frac{1}{2} \times 65 \times 14 \times 14 \\\\= 65 \times 14 \times 7 \\\\=6370\ J\\[/tex]

For point c:

As we've seen, there really is no force acting, and the mechanic KE: GPE is used. Because legitimate is conserved. Home energy loss means GPE must be equal to KE gain.

For point d:

A diver has risen 5 feet above the surface. As a result, according to the energy conservation law:

[tex]\to U_i + K_i= U_f + K_f\\\\ \to mg \times h + 0 = mg \times \frac{h}{2} + \frac{1}{2} m v^2\\\\ \to 9.8 \times 10 = 9.8 \times 5 + \frac{v^2}{2}\\\\\to 9.8 \times 10 - 9.8 \times 5 = \frac{v^2}{2}\\\\\to \frac{v^2}{2} =9.8( 10 - 5) \\\\\to v^2 =9.8( 10 - 5) \times 2 \\\\\to v^2 =9.8\times 5 \times 2 \\\\\to v^2 =98 \\\\\to v =98\ \frac{m}{s^2} \\\\[/tex]

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If a material were being designed to demonstrate no thermal expansions, how would the energy plot look like?

Answers

The characteristics of thermal expansion allow finding that the response for a material without thermal expansion is

The length variation is zero In the graph the line is horizontal so there is no change in length with temperature

Thermal expansion is the macroscopic sum of the changes in the length of the bonds when the energy (temperature) changes, it can be written

              ΔL = α L₀ ΔT

Where ΔL is the change in length, α the coefficient of linear expansion, L₀ the initial length and ΔT the change in body temperature

In this case, a material is being designed that the thermal expansion is very small, for this the material must be made up of several compounds where some of them present a contraction with temperature, some examples: water at low temperature, liquefied gases , ceramic tile, quartz, etc.

The thermal expansion measurement processes control the body temperature and measure the change in length, in this case the change in length must be zero, in the attachment we can see a graph of a composite material with these characteristics, an example of this type of material is Invar an alloy of nickel and iron α = 3.7 10⁻⁶ ºC⁻¹

In conclusion, using the characteristics of thermal expansion we can find that the response of material without thermal expansion is

The length variation is zero In the graph the line is horizontal so there is no change in length with temperature

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A ball of mass 2 kg is being pulled sideways by a force 3 N to the right, and a force of 8N to the left - these are the only forces acting on it..

1.) What is the net force in the horizontal (x) direction?

2.) what is the acceleration in the horizontal (x) direction?​

Answers

Answer:

Explanation:

1.) What is the net force in the horizontal (x) direction?

Fnet = 8 - 3 = 5 N left

2.) what is the acceleration in the horizontal (x) direction?​

a = Fnet/m = 5/2 = 2.5 m/s² left

PLz help Asap 10 POINT
I MIGHT GIVE BRAINLIST IF RIGHT AND IF I CAN.

Answers

Answer:

Mars has a thin atmosphere

Explanation:

Okay, so this is going to sound crazy but bare with me. Mar's atmosphere is thin. There is little to no gravitational pull for the atmosphere to stay. Also, no, humans will not be able to live on Mars because the atmosphere, quite literally, contains 1% oxygen. Hopefully this helps! Earth's is thick because of the gravitational pull and gases in Earth's surface.

on earth what is the weight of a large screen tv thas has amass of 75 kg

Answers

Answer:

Explanation:

F = mg

F = 75(9.8)

F = 735 N

Which area of study involves how mechanics and motion affect sports performance?
1.) Momentum. 2.) Velocity. 3.) Biomechanics. 4. )Centripetal force.

Answers

Answer:

biomechanics

Explanation:

Biomechanics is part of the larger field of kinesiology, specifically focusing on the mechanics of the movement. 1 It is both a basic and applied science, encompassing research and practical use of its findings.

when the frequency of a wave decreases the what increases​

Answers

the wavelength gets longer.

Answer:

The wavelength

Explanation:

As the frequency decreases, the wavelength gets longer.

in the free body diagram. what is the net force?

A) 40 N, right

B) 10 N, right

C) 80 N

D) 32 N, right

Answers

Answer:

None of the suggested solutions.

Explanation:

horizontally, net force is

60cos30 - 20 = 31.96... 32 N right

which might be their desired answer.

There is also a vertical net force component.

vertically, net force is 40 + 60sin30 - 40 = 30 N up

total net force is

√(32² + 30²) = 43.834... 44 N

θ = arctan(30/32) = 43° above horizontal right.

what’s 12cm in kilometers

Answers

0.00001 is the correct answer you have an amazing day

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same:
A. Density
B. Mass
C. Volume
D. Inertia

Answers

The Correct choice is :

Density

What is motivation in your own world

Answers

Answer:

Motivation is the process that initiates, guides, and maintains goal-oriented behaviors.

A student practicing for a track meet ran 3500 m in 500 s. What was her average speed? a. 4,000 m/s b. 0.14 m/s c. 7 m/s d. 1,750, 000 m/s

Answers

Answer:

c. 7 m/s

Explanation:

3500 m / 500 s = 7 m/s

A 8 kg brick is sitting on a frictionless table. If a 60 N horizontal force is applied to the brick and it accelerates at 2 m/s2, what will be the force of friction
a.24
b.44
c.0
d.600

Answers

b. 44

"F = ma"

let F be horizontal force applied and f be friction

F - f = ma
60 - f = 8 x 2
60 - f = 16
f = 60 - 16
f = 44N

Describe the relationship between temperature and kinetic
energy.

Answers

Answer:

temperatures is directly proportional to kinetic energy

Explanation:

in increasing the temperature,kinetic energy also increases

hope it helps...

4. Shirley Bored sits in her seat in the English classroom. The force of gravity on Earth pulls
down on Shirley's body with 600 N of force. What is the direction and size of the reaction
force acting on Shirley?

Answers

Answer:

600 N upward

Explanation:

According to Newton's third law, for every action their is an equal and opposite reaction. The equal and opposite reaction to a downward force of magnitude 600 N is an upward force of magnitude 600 N

Which area of astronomy does Kepler's laws address? (1 point)
A. The movement of asteroids in the solar system
B. The movement of the sun in relation to the planets.
C. The movement of planets within the solar system.
D. The movement of stars within galaxies.​

Answers

Answer:

B

Explanation:

His law describes the orbits of planets around the Sun.

The area of astronomy that Kepler's laws address is the movement of planets within the solar system. The correct option is C.

What is Kepler's law?

According to Kepler's first law, "all the planets revolve in elliptical orbits around the sun, with the sun at one of the foci."

Perihelion is the point at which the planet is closest to the sun, and aphelion is the point at which the planet is farthest from the sun.

Kepler's laws of planetary motion, published between 1609 and 1619 by Johannes Kepler, describe the orbits of planets around the Sun.

Kepler's laws of planetary motion represent a watershed moment in the transition from geocentrism to heliocentrism. They establish the first quantitative link between the planets, including Earth.

Thus, the correct option is C.

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What is the Validity measures of a basketball bouncing

Answers

This study was aimed at testing the construct validity of the basketball basic motion skills test instrument (ITK GDBB). The research used descriptive method of 3 basketball experts in the city of Cimahi; 3 experts are the expert in basketball. The instrument used was the ITB GDBB developed by Silvy (2019) consisting of top passing, bottom passing, top service, bottom service, chest passing, bounding passing, overhead passing, and leading ball (dribbling). This instrument consists of 76 items that cover 4 domains in basketball, namely chest pass, overhead pass, bound pass, and dribbling. The validity method used the construct validity of different power types. For the reliability method, it used the Kuder Ricardson (KR) and Objectivity analysis. The results of the construct validity analysis of a total of 76 items show that the score is ranged from 0.67 to 1.00. The construct validity value of 71 items in the basketball game is in the high category (= 1.00), 5 items are in the sufficient category, the relativity score is ranged from 0.75 to 0.98, and the objectivity score is ranged from 0.89 to 0.95. The conclusion is that this test instrument can be used as a standardized basic motion skill test for standardized large ball games for validity in basic motion skills in basketball games for grade VII junior high school students.

The image shows a dam.

A large dam has point X behind it where the water level is high and point Y below it to, which the water flows.

Which descriptions best fit the labels?

X: kinetic energy
Y: potential energy
X: potential energy
Y: kinetic energy
X: mechanical energy
Y: electrical energy
X: electrical energy
Y: mechanical energy

Answers

Answer:

The Correct answer is B on Edge

Explanation:

I did the quiz! :)

A block m1 rests on a surface. A second block m2 sits on top of the first block. A horizontal force F applied to the bottom block pulls both blocks at constant velocity. Here m1 = m2 = m.
(a)
What is the normal force exerted by the surface on the bottom block? (Use the following as necessary: m and g as necessary.)

Answers

Answer:

N = 2mg

Explanation:

Assuming the surface is horizontal

The surface must provide enough normal force to prevent the masses from accelerating in the vertical direction.

(a) The normal force exerted by the surface on the bottom block is N1 = 2mg.

Given that,

A block m1 rests on a surface. A second block m2 sits on top of the first block. A horizontal force F applied to the bottom block pulls both blocks at constant velocity. Here m1 = m2 = m.

Based on the above information, we can say that the N1 is 2mg.

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WHY IS NO ONE HELPING I'M BOUTTA GET REPORTED FR!!!!!!!!!!!!!!
what would happen to the weather if half of the human race just died off? would it get colder? why?

Answers

yes it would get colder because people help people learn through experiences with no one to help teach the world would be a cold lifeless place.

Will mark brainliest help last question

Answers

Answer:

b

the def of convection is : process by which heat is transferred by movement of a heated fluid such as air or water

therefore c and d are wrong.

Explanation:

Kinetic and Potential energy

Answers

The main difference between potential and kinetic energy is that one is the energy of what can be and one is the energy of what is. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement.

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