3 years ago

Help help help help help

Physics

1 answer:

mina [271]3 years ago

7 0

Please mark me brainliest

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How do the chemical properties of the halogens compare to those of the noble gases?

serg [7]

Halogens are extremely reactive elements because they need one more electron to gain a full octet of valence electrons, whereas the noble gasesare extremely unstable because they already have their full octet.

8 0

3 years ago

Calculate the phase angle (in radians) for a circuit with a maximum voltage of 12 V and w-50 Hz. The voltage source is connected

Vinvika [58]

Answer:

The phase angle is 0.0180 rad.

(c) is correct option.

Explanation:

Given that,

Voltage = 12 V

Angular velocity = 50 Hz

Capacitance $C= 20\times10^{-2}\ F$

Inductance $L=20\times10^{-3}\ H$

Resistance $R= 50\ Omega$

We need to calculate the impedance

Using formula of impedance

$z=\sqrt{R^2+(\omega L-\dfrac{1}{\omega C})^2}$

$z=\sqrt{50^2+(50\times20\times10^{-3}-\dfrac{1}{50\times20\times10^{-2}})^2}$

$z=50.00$

We need to calculate the phase angle

Using formula of phase angle

$\theta=\cos^{-1}(\dfrac{R}{z})$

$\theta=\cos^{-1}(\dfrac{50}{50.00})$

$\theta=0.0180\ rad$

Hence, The phase angle is 0.0180 rad.

3 0

3 years ago

Name one metal and one non-metal from the periodic table? Y’all I need help Thank you!

Stella [2.4K]

Answer:

Zinc and Neon!

Explanation:

zinc is an element that is a transition metal and neon is a noble gas

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3 years ago

The flash was running around Central City when he runs into the villain Gorilla Grodd. Gorilla Grodd releases the spring loaded

strojnjashka [21]

PE = 1/2 kx²

mgh = 1/2 kx²

80.9.8.20 = 1/2 k.4²

k = 1960

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2 years ago

A car is brought to rest uniformly in 6 seconds. The initial velocity of the car was 24 m/s. How far does the car travel while d

pav-90 [236]

Answer:

v=u+at

24=0+at

24=a×6

a=4m/s

hence

s=ut+at^2÷2

s=36m

Explanation:

since the car is brought to rest the u=0

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2 years ago