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3 years ago

How do scientists learn about the brain.

2 answers:

7 0

Mainly looking at scans ansd the levels of hormons and chemicals when we use or brain for example when we use the frontal lobe diffren thsades will appear. our stress levels as well. how we react to things problems situations or questions.

Allushta [10]3 years ago

3 0

By doing scans and dissecting animals (or people who donated their body to science when they die).

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A series AC circuit contains a resistor, an inductor of 150 mH, a capacitor of 5.00 mF, and a generator with DVmax 5 240 V opera

yanalaym [24]

Given:

Inductance, L = 150 mH

Capacitance, C = 5.00 mF

$\Delta V_{max}$ = 240 V

frequency, f = 50Hz

$I_{max}$ = 100 mA

Solution:

To calculate the parameters of the given circuit series RLC circuit:

angular frequency, $\omega$ = $2\pi f = 2\pi \times50 = 100\pi$

a). Inductive reactance, $X_{L}$ is given by:

$\X_{L} = \omega L = 100\pi \times 150\times 10^{-3} = 47.12\Omega$

$X_{L} = 47.12\Omega$

b). The capacitive reactance, $X_{C}$ is given by:

$\X_{C} = \frac{1}{\omega C} = \frac{1}{2\pi fC} = \frac{1}{2\pi \times 50\times 5.00\times 10^{-3}} = 0.636\Omega$

$X_{C} = 0.636\Omega$

c). Impedance, Z = $\frac{\Delta V_{max}}{I_{max}} = \frac{240}{100\times 10^{-3}} = 2400\Omega$

$Z = 2400\Omega$

d). Resistance, R is given by:

$Z = \sqrt {R^{2} + (X_{L} - X_{C})}$

$2400^{2} = R^{2} + (47.12 - 0.636)^{2}$

$R = \sqrt {5757839.238}$

$R = 2399.5\Omega$

e). Phase angle between current and the generator voltage is given by:

$tan\phi = \frac{X_{L} - X_{C}}{R}$

$\phi =tan^{-1}( \frac{X_{L} - X_{C}}{R})$

$\phi =tan^{-1}( \frac{47.12 - 0.636}{2399.5}) = tan^{-1}{0.0.01937}$

$\phi = 1.11^{\circ}$

5 0

4 years ago

What does this picture mean?

ivann1987 [24]

be aware of large trucks on the roadway
Tip: usually, these signs are hazard signs or warning.
Also, this isnt physics

5 0

3 years ago

Read 2 more answers

A body of mass 5 kg has a velocity 20 MS -1 its Momentum is

Anon25 [30]

Answer:

Momentum is 100 kg.m/s

Explanation:

given

mass, m = 5 kg

velocity, v = 20 m/s

To find : momentum (P)

We know that momentum is given by equation:

p = mv

= 5 kg x 20 m/s

= 100 kg.m/s

7 0

3 years ago

A planet moves forward because of momentum True or False??

lorasvet [3.4K]

Answer:

true

Explanation:

8 0

3 years ago

Two 6 ohm resistors in parallel gives an equivalent resistance of

Mashcka [7]

Answer:

3 ohms

Explanation:

6×6/6+6 =3 .............

3 0

3 years ago