All categories

3 years ago

Identify the three domains and explain each

Physics

1 answer:

REY [17]3 years ago

8 0

Answer:

The B Major chord, which forms the root of the B scale, is made up of the notes B, D#, and F#— the first, third, and fifth notes of the key of B. On the guitar, using the basic B chord position shown in the picture, these notes arrive in this order: Mute, B, F#, B, D#, and F#

Explanation:

yeah

You might be interested in

Can someone explain the equation Q = M C delta T or Q = MCΔT Thanks!

mylen [45]

Q = heat energy , m=mass , c=specific heat , delta T= change in temperature

as you know heat is a form of energy which is usually measured in Joules according to the SI. and also we usually use kilograms for mass.

so you need to know the mass, specific heat, and change in temperature in order to find out the heat energy :)

3 0

3 years ago

Read 2 more answers

Learning Check: Ranking Elements

loris [4]

Yes
62748476182973838292

8 0

3 years ago

after a circuit has been turned off, so it is important to make sure they are discharged before you touch them. Suppose a 120 mF

Snezhnost [94]

Answer:

The time is $110.16\times10^{-3}\ sec$

Explanation:

Given that,

Capacitor = 120 μF

Voltage = 150 V

Resistance = 1.8 kΩ

Current = 50 mA

We need to calculate the discharge current

Using formula of discharge current

$i_{0}=\dfrac{V_{0}}{R}$

Put the value into the formula

$i_{0}=\dfrac{150}{1.8\times10^{3}}$

$i_{0}=83.3\times10^{-3}\ A$

We need to calculate the time

Using formula of current

$i=\dfrac{V_{0}}{R}e^{\frac{-t}{RC}}$

Put the value into the formula

$50=\dfrac{150}{1.8\times10^{3}}e^{\frac{-t}{RC}}$

$\dfrac{50}{83.3}=e^{\frac{-t}{RC}}$

$\dfrac{-t}{RC}=ln(0.600)$

$t=0.51\times1.8\times10^{3}\times120\times10^{-6}$

$t=110.16\times10^{-3}\ sec$

Hence, The time is $110.16\times10^{-3}\ sec$

4 0

3 years ago

Fig 3.1 shows the speed-time graph of a firework rocket as it rises and then falls to the ground

Minchanka [31]

The acceleration of an object in free fall motion is the constant acceleration due to gravity

(i) The gradient of the rocket at point B is approximately -9.81 m/s²

(ii) The reason why the gradient is -9.81 m/s² is as follows;

The given graph is the speed to time graph with the upward direction taken as positive

Gradient of the speed to time graph is the acceleration

Given that at point B the object is at the maximum point, the upward motion due to the rocket stops, the motion of the rocket is then due to gravity

Therefore, the gradient at B, is given as follows;

$Gradient = \dfrac{\Delta v}{\Delta t } = \dfrac{d(u + a \cdot t)}{dt} =a$

Force = Mass × Acceleration

At point B the only force acting on the rocket is the force of gravity, therefore, the acceleration of the rocket at B, a = g, acceleration due to gravity ≈ 9.81 m/s², and the rocket is falling due to its weight

Force acting at B = Weight = Mass × Acceleration due to gravity, g

Therefore, only gravitational force is acting on the rocket when the direction of the rocket changes and rocket falls freely, at B, and the acceleration of the rocket at B = g = 9.81 m/s²

Learn more about free fall motion here:

brainly.com/question/16808647

3 0

2 years ago

Light can travel through outer space from the Sun to the Earth. This shows that

PIT_PIT [208]

Answer:

c. that light can travel in a vacuum

6 0

4 years ago