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3 years ago

7

What is the scientific definition of tracked?

1 answer:

dexar [7]3 years ago

8 0

To find or discover by investigation?

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What do you think happens to kinetic energy with potential energy being increased?

swat32

Answer:

If the kinetic energy increases, the potential energy decreases, and vice-versa.

Explanation:

The amount of change in kinetic energy is equal to the amount of change in potential energy.

8 0

2 years ago

Marvin uses a long copper wire with resistivity 1.68 x 10^-8 Ω⋅m and diameter 1.00 x 10^−3 m to create a solenoid that has a 3

Mazyrski [523]

Answer with Explanation:

We are given that

Resistivity of copper wire= $\rh0=1.68\times 10^{-8}\Omega m$

Diameter=d= $1.00\times 10^{-3} m$

Radius of copper wire= $r=\frac{d}{2}=\frac{1}{2}\times 10^{-3} m$

Radius of solenoid=r' $=3 cm=3\times 10^{-2} m$

1 m=100 cm

a.Length of wire=l=11.3 m

Area of wire=A= $\pi r^2$

Where $\pi=3.14$

A= $3.14\times (\frac{1}{2}\times 10^{-3})^2$

Resistance, R= $\rho \frac{l}{A}$

Using the formula

$R=1.68\times 10^{-8}\times\frac{11.3}{3.14\times (\frac{1}{2}\times 10^{-3})^2}$

$R=0.24\Omega$

B.Length of solenoid= $2\pi r'=2\times 3.14\times 3\times 10^{-2}=0.188$ m

Number of turns= $n_0=\frac{l}{2\pi r'}=\frac{11.3}{0.188}$

$n_0$ =60

C.Potential difference,V=3 V

Current,I= $\frac{V}{R}$

I= $\frac{3}{0.24}=12.5 A$

D.Total length =0.1 m

Number of turns per unit length,n= $\frac{60}{0.1}=600$

Magnetic field along central axis inside of the solenoid,B= $\mu_0 nI$

$B=4\pi\times 10^{-7}\times 12.5\times 600=9.42\times 10^{-3} T$

4 0

3 years ago

Read 2 more answers

Why does a hot air balloon fall when the air inside is not heated

trapecia [35]

A hot air balloon rises in the first place because the air inside is hot, which rises. So, if the air inside is not heated, it fails to rise and falls. Warm air rises because the particles get excited and jiggle with the heat, and cause the air to take up more space. So, as the surrounding air is probably colder and denser, the less dense hot air rises up in the hot air balloon.

7 0

4 years ago

PLEASE HELP AND HURRY

julsineya [31]

It would be D. Equal to zero

3 0

3 years ago

At t = 0, a battery is connected to a series arrangement of a resistor and an inductor. At what multiple of the inductive time c

Paraphin [41]

Answer:

0.2854

Explanation:

The Energy stored in coil is given by

U= $\frac{1}{2}$ L $I^{2}$

U=0.565Uo

$(\frac{1}{2} )L(i^{2} )=(0.565)(\frac{1}{2} )L(io^{2} )$

$(i^{2} )=(0.565)(io^{2} )$

$(ioe^{-t/T} )^{2}=(0.565) (io)^{2}$

$(io)^{2}e^{-2t/T}=(0.565)(io)^{2}$

$e^{-2t/T}=0.565$

Apply log: both sides we get

$\frac{-2t}{T}=-0.5709$

$\frac{t}{T}=0.2854$

5 0

4 years ago