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3 years ago

A triangle is the shape used to represent the components of total health. True False

Physics

2 answers:

Ivahew [28]3 years ago

8 0

True it is the shape used to represent the components of total health

Simora [160]3 years ago

7 0

True is the correct answer and the person on the top is correct

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1. What is the efficiency of a heat engine that does 1250 J of work and gives off 5250 J of heat to

vladimir2022 [97]

answer: in pic

explanation: found it here http://gaaq.weebly.com/uploads/7/8/8/4/78844490/chapter_11_q_as.pdf

7 0

3 years ago

Read 2 more answers

Very small particles moving in viscous fluids experience a drag force proportional to

Likurg_2 [28]

Answer:

t = 3w/gk

y = w²/gk²(2+e^-gkt/t)

Explanation:

The detailed step by step solution can be found in the attachment below.

Vt = W/k. It is the velocity of the body when the drag force = the weight of the particle.

I steps have been explaine6in the attachments below.

3 0

3 years ago

Velocity vectors point in the same direction as displacement?

liq [111]

Explanation:

You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east

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3 years ago

Read 2 more answers

Building codes usually limit the current carried by a No. 14 copper wire to 15 A. Many household circuits are wired with this si

Sedbober [7]

Answer:

The drift velocity of the electrons in this case is c) 5.52 x 10-4 m/s

Explanation:

First of all, we need to find the volume occupied by 63.3g of copper, so $V=\frac{m}{\rho}= \frac{0.0633Kg}{8,900kg/m^{3}} =7.11 \times 10^{-6} m^{3}$ , then if we assume each atom of copper contributes with one free electron to the material body $n=\frac{N_{A}}{V}=\frac{6.02 \times 10^{23} electrons}{7.11 \times 10^{-6} m^{3}} =8.46 \times 10^{28} electrons/m^{3}$ .

Finally, we apply $v_{d}=\frac{I}{nqA}$ , where A is area so, $A=\pi (\frac{d}{2})^{2}= \pi (\frac{0.0016m}{2})^{2}=2 \times 10^{-6} m^{2}$ , thus $v_{d}=\frac{I}{nqA}=\frac{15C/s}{(8.46 \times 10^{28} m^{-3})(1.60 \times 10^{-19} C)(2 \times 10^{-6} m^{2})}=5.50 \times 10^{-4} m/s$ .

As we can see c. 5.52 x 10-4 m/s is the nearest one.

3 0

3 years ago

What are the main four layers in the earth and what material do they have?

Zanzabum

The Four Layers Of Earth

(1.) CRUST : (The Rocky Surface Layer Of Earth) Is Made up of:

Mostly Oxygen, Silicon, Aluminum, Iron, Calcium, Sodium, Potassium and Magnesium.

(2.) MANTLE : (Above Earths Core is the Mantle) Made Up of Rock:

Containing Silicon, Iron, Magnesium, Aluminum, Oxygen and Other Minerals.

(3.) OUTER CORE : (Third Layer Of the Earth) NOTE- It Is The Only Liquid Layer of Earth-

And is mainly made up of the Metals:

Iron and Nickel, as well as small amounts of other substances. NOTE:
-The Outer Core Is Responsible For Earths Magnetic Field-

(4.) INNER CORE: NOTE: The Very Middle Of Earth.
Consists of very high pressure at a high temperature.

Made of SOLID Iron-Nickel instead of a liquid.

3 0

3 years ago