please answer all of these questions for brainly!

Answer:

Explanation:

Wavelength = Velocity / Frequency

= 1782/30.2

= 59 metre.

Answer:

igneous rocks are formed through the cooling and solidification of magma or lava. As hot, molten rock rises to the surface, it undergoes changes in temperature and pressure that cause it to cool, solidify, and crystallize.

Answer:

P = 5880  J

Explanation:

Given that,

The mass of the block, m = 30 kg

The block is sitting at a height of 20 m.

The block will have gravitational potential energy. The formula for gravitational potential energy is given by :

[tex]P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J[/tex]

So, the required potential energy is equal to 5880  J.

Answer:

f = 12 cm

Explanation:

Center of Curvature:

The center of that hollow sphere, whose part is the spherical mirror, is known as the ‘Center of Curvature’ of  mirror.

The Radius of Curvature:

The radius of that hollow sphere, whose part is the spherical mirror, is known as the ‘Radius of Curvature’ of  mirror. It is the distance from pole to the center of curvature.

Focal Length:

The distance between principal focus and pole is called ‘Focal Length’. It is denoted by ‘F’.

The focal length of the spherical (concave) mirror is approximately equal to half of the radius of curvature:

[tex]f = \frac{R}{2}[/tex]

where,

f = focal length = ?

R = Radius of curvature = 24 cm

Therefore,

[tex]f = \frac{24\ cm}{2}[/tex]

f = 12 cm

The wavelength of the wave is 5.0 x 10^-11 m which is option D.

To get the wavelength (λ) of the  electromagnetic wave given we will first link it up with its relationship  to its frequency (f) and also  to the speed of light (c) given by the formula below.

λ = c/f

Where,

c is 3.0 x 10^8 m/s

f is 6.0 x 10^18 Hz

C/f=  3.0 x 10^8 m/s  6.0 x 10^18 Hz

wavelength  = 5.0 x 10^-11 m

so, the wavelength is 5.0 x 10^-11 m.

Learn more about wavelength below.

https://brainly.com/question/10728818

#SPJ1

Answer:

r = 50.47 x 10³ m = 50.47 km

Explanation:

Using the formula for the acceleration due to gravity:

[tex]g = \frac{Gm}{r^2}[/tex]

where,

g = acceleration due to gravity on the surface of asteroid = 0.0288 m/s²

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ Nm²/kg²

m= mass of asteroid = 1.1 x 10¹⁸ kg

r = radius of asteroid = ?

Therefore,

[tex]0.0288\ m/s^2 = \frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{r^2} \\\\r = \sqrt{\frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{0.0288\ m/s^2}}[/tex]

r = 50.47 x 10³ m = 50.47 km

Answer:

5.05x10^4

Explanation:

g=(GM)/r^2, so

.0288=(6.67x10^-11*1.10x10^18)/r^2, r=5.05x10^4.

This is correct on Acellus.

Answer:

-201

Explanation:

Got it right on Acellus

Answer:

-201

Explanation:

acellus

Answer:

Masę, m = 1,02 kilograma

Explanation:

Biorąc pod uwagę następujące dane;

Wysokość = 100 m

Energia potencjalna = 1 KJ = 1000 dżuli

Wiemy, że przyspieszenie ziemskie wynosi 9,8 m/s².

Znaleźć masę obiektu;

Energię potencjalną można zdefiniować jako energię posiadaną przez obiekt lub ciało ze względu na jego położenie.

Matematycznie energia potencjalna jest określona wzorem;

[tex] P.E = mgh [/tex]

Gdzie;

P.E reprezentuje energię potencjalną mierzoną w dżulach.

m reprezentuje masę obiektu.

g reprezentuje przyspieszenie ziemskie mierzone w metrach na sekundę kwadratową.

h oznacza wysokość mierzoną w metrach.

Podstawiając do wzoru, mamy;

1000 = m * 9,8 * 100

1000 = m * 980

Masę, m = 1000/980

Masę, m = 1,02 kilograma

Hi,

Persuasive writing "is a sound argument of a position backed up with facts, details, examples, and one additional element-appeal".

In the choices there are only 3 answers who appeal to this definition:

1.  Banning all video games is not the answer to reducing violence in our society. People argue that violent games harm our culture and should be banned. However, this action would go against the freedom of choice.

2. The New York Times reports that over a million students in the United States are now taking courses online. Online learning may be more convenient for students and teachers. However, it appears to be just an attempt by schools to save money.

3. We must act to preserve the rain forests of the Amazon. According to the World Wildlife Fund, 17 percent of the rain forest has been cleared in the past 50 years.

XD

Answer:

I would like to attach options to the question above for clarity.

Jasmine is investigating the effect force has on the motion of an object. She predicts if she puts a strong force on pushing a bowling ball, it will travel a farther distance than when a weak force is applied. Is her prediction correct?

A. No, a weak or a strong force applied to the ball is unable to affect the motion of the ball.

B. No, the force applied to the bowling ball should be a strong force.

C. Yes, the force applied to the bowling ball affects the motion of the ball.

D. Yes, the ball will travel a longer distance when a weak force is applied.

The correct option is C (Yes, the force applied to the bowling ball affects the motion of the ball).

Explanation:

First, a force is any effort either push or pull that causes an object to undergo a change.

A bowling ball can remain at rest or in motion except a force acts on it. This brings us to the question above, the mass which affects force is not mentioned which means it is uniform or negligible. Recall that force = mass X acceleration. So the greater the force that is applied to the bowling ball the further distance it will travel. From the question, she applied a forward force (pushing), so the more force she applies the further the bowling ball will travel.

Answer:

I think B but I could be wrong

Explanation:

Answer:

 Scientists at IIT Roorkee are testing a floating device that can generate electricity from flowing surface water of rivers and streams, paving the way for an alternative source of renewable energy.

Explanation:

hope it helps my dear friend.

Answer:

The efficiency of the constuction is 9.0

Explanation:

Answer:

Aytyhjnjdfjjdhjhgkhgjkbghnnnnjjjjkkkkkkkkk

Answer:

The resistance of the internal light bulb of the car is higher than that of the household circuitry.

Explanation:

Given the following data;

I. Current = 1.5 A

Voltage = 12 V

To find the resistance;

Voltage = current * resistance

12 = 1.5 * resistance

Resistance = 12/1.5

Resistance = 8 Ohms

II. Power = 100 Watt

Voltage = 110 V

To find the resistance;

Power = voltage/resistance²

100 = 110/resistance²

Cross-multiplying, we have;

100resistance² = 110

R² = 110/100

R² = 1.1

Taking the square root of both sides, we have;

R = √1.1

R = 1.05 Ohms

Therefore, the resistance of the internal light bulb of the car is higher than that of the household circuitry.

Answer:

Population B is taller on average

Explanation:

Without even needing to take the average of the heights, we can glance at the histograms and notice that the vast majority of Population A's flowers are under 30 cm.

Answer:

83.25m/s

Explanation:

velocity=frequency×wavelength

V= 22.5×3.7

V=83.25m/s

Answer:

Weight = 966 Newton.

Explanation:

Given the following data;

Length = 1.2 m

Width = 2.3 m

Pressure = 350 Pa

To find the weight of the tank;

We know that weight is the force of gravity acting on an object multiplied by its mass.

Weight = mg = force

Hence, we would determine the force using the parameters that were given.

But we would first determine the area of the rectangular tank.

Area of rectangle, A = length * width

A = 1.2 * 2.3

A = 2.76 m²

Mathematically, pressure is given by the formula;

Pressure = force/area

Force = pressure * area

Substituting into the formula, we have;

Force = 2.76 * 350

Force = 966 Newton

Therefore, the weight of the tank is 966 Newton.

[tex]\huge{ \mathfrak{  \underline{ Answer} \:  \:  ✓ }}[/tex]

1. Calculate the equivalent resistance in the circuit :

In the given diagram, the resistors are in series connection,

So equivalent resistance = sum of resistance of both resistors.

[tex] \large \boxed{R_{eq} =R_1 +R_2 }[/tex]

Therefore, Equivalent resistance = 840 ohms.

2. Calculate the current through the battery :

[tex] \boxed{ \mathrm{current = \dfrac{potential \: \: difference}{resistance} }}[/tex]

Hence, current through the battery = 0.142 A

3. How much current is passing through each resistor :

Since the resistors are joined in series connection, the current flowing through each resistor will be equal = 0.142 Amperes.

___________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

Answer:

False the universe has not always existed the way it does now.

Explanation:

Answer: False

Explanation: The Universe continues to expand even today, growing at a rate of 6.5 light-years in all directions per year as time goes on.

Answer:

428.8 nm

Explanation:

Answer: 80

Explanation:

Answer:

C=20

a = 10.8

c= 4.3

Explanation:

Answer:

use of nanotechnology ; quantum dots

Explanation:

edg 2021

Answer:

Explanation:

The notes are about using Quantum Dots for bio-medical imagining. The notes are more on its uses than its theory. So the title should be O Uses of Nanotechnology: Quantum Dots.

Answer:

White holes do not exist in space

Explanation:

Any outgoing matter would collide with the matter in orbit, and the system would collapse into a black hole

Have a good day :)

Answer: Mass is the quantity of matter in an object whereas weight is the force of gravity on an object.

Weight is dependent on gravity while mass is independent on gravity

Explanation:

Water is more dense in its solid state.

This statement is true.

Answer: what is it asking

Explanation: