The universe is larger than can be directly measured. Which of the following are most common in the universe?
A. galaxies
B. solar systems
C. black holes
D. quasars

Answer:

0.900

Explanation:

joules" (and any subsequent words) was ignored because we limit queries to 32 words.

Answer:

See image

Explanation:

Plato

Answer: Friction that acts on a sliding object

Explanation:

Mercury is present in zinc plate which is used in simple cell

Answer:

A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.

Explanation:

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

The period is the time that elapses between the emission of two consecutive waves. In other words, it is the time it takes for a complete wave to pass a reference point. The period (T) is simply the inverse of the frequency (f):

[tex]T=\frac{1}{f}[/tex]

In this case, f=5*10¹⁰ Hz. So, replacing in the definition of period T:

[tex]T=\frac{1}{5*10^{10} Hz }[/tex]

Solving:

T= 2*10⁻¹¹ seconds

A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.

A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.

The fequency is defined as the number of cycles achieved by the any wave it is expressed in hertz.

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

The period is the time that elapses between the emission of two consecutive waves. In other words, it is the time it takes for a complete wave to pass a reference point. The period (T) is simply the inverse of the frequency (f):

[tex]T=\dfrac{1}{f}[/tex]

In this case, f=5*10¹⁰ Hz. So, replacing in the definition of period T:

[tex]T=\dfrac{1}{5\times 10^{10}}=2\times 10^{-11}\ Sec[/tex]

A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.

Thus a microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.

To know more about Frequency follow

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Answer:

2. reflected

hope it is helpful to you

Answer:

1. The specific heat of the meatal is approximately 0.266 J/(g·°C)

2. 46.6334 kJ

Explanation:

1. The given mass of the sample of metal, m = 110.0 g

The temperature change of the metal when heat is added, ΔT = 10.0°C

The amount of head that was added, ΔH = 70.0 Calories = 292.88 Joules

The formula for heat heat capacity of a material is given as follows

Q = m × c × ΔT

Where;

Q = The quantity of heat added = 292.88 Joules

m = The mass of the material = 110.0 g

ΔT =  The temperature change = 10.0°C

c = The specific heat capacity of the material

We get;

c = ΔH/(m × ΔT)

Which gives;

c = 292.88 J/(110.0 g × 10.0°C) ≈ 0.266 J/(g·°C)

2. The given mass of aluminum, m = 550.0 g

The initial temperature of the aluminum, T₁ = 14.0°C

The final temperature of the aluminum, T₂ = 108.0°C

The specific heat of aluminum, c = 0.902 J/(g·°C)

We get;

Q = m × c × (T₂ - T₁)

Q = 550.0 g × 0.902 J/(g·°C) × (108.0°C - 14.0°C) = 46,633.4 joules = 46.6334 kJ

The heat that must be supplied to 550.0 g of aluminum pan to raise the temperature of the pan from 14.0°C to 108.0°C, Q = 46.6334 kJ.

Correct question:

Imagine that a 1200 kg vehicle speeds up from rest to 20.0 m/s in 80 s.

How much work was done on the car? (Answer in 3 sig figs)

Answer:

the work done on the vehicle is 2.40 x 10⁵ J

Explanation:

Given;

mass of the vehicle, m = 1200 kg

initial velocity of the vehicle, u = 0

final velocity of the vehicle, v = 20 m/s

time of motion of the vehicle, t = 80 s

The distance moved by the vehicle is calculated as;

[tex]s = (\frac{v + u}{2} )t\\\\s = (\frac{20+ 0}{2} )(80)\\\\s = 800 \ m[/tex]

The force applied to the vehicle is calculated as;

[tex]F = ma = \frac{m v}{t} = \frac{1200 \times 20}{80} = 300 \ N\\\\[/tex]

The work done on the vehicle is calculated as;

W = F x d

W = 300 x 800

W = 2.4 x 10⁵ J.

Therefore, the work done on the vehicle is 2.40 x 10⁵ J

72 m/s

Explanation:

Given,

Frequency ( f ) = 6 Hz

Wavelength ( λ ) = 12 m

To find : -

Speed ( v ) = ?

Formula : -

v = f x λ

v

= 6 x 12

= 72 m/s

Therefore,

the speed of a wave with a frequency of 6 Hz and a wavelength of 12 m is 72 m/s.

Answer:

The red car would experience the greatest acceleration.

Explanation:

Newton says that Force equals mass times acceleration or F = ma

We get a = F/m

If we want the greatest acceleration or a, mass or m must be the lowest.

Answer:

Explanation:

When resistors are connected in parallel combination, then equivalent resistance is given by,

[tex] \to \quad \bf{ \dfrac{1}{R_1} + \dfrac{1}{R_2} =\dfrac{1}{R_p}}[/tex]

Inserting values,

[tex] \to \quad \bf { \dfrac{1}{R_1} + \dfrac{1}{R_2} =\dfrac{1}{R_p} } \\ \\ \to \quad \bf { \dfrac{1}{R_1} + \dfrac{1}{221} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { \dfrac{221+R_1}{(R_1)(221)} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { \dfrac{221+R_1}{221R_1} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { 120.7(221+R_1) = 221R_1(1)} \\ \\ \to \quad \bf { 26674.7 + 120.7R_1= 221R_1} \\ \\ \to \quad \bf { 26674.7= 221R_1- 120.7R_1} \\ \\ \to \quad \bf { 26674.7 = 100.3R_1} \\ \\ \to \quad \bf { \dfrac{26674.7 }{100.3} =R_1} \\ \\ \to \quad\underline{\boxed{ \bf { 265.9 \; \Omega=R_1}}} \\ [/tex]

Answer:

15.4

Explanation:

770x14% = 107.8

rearrange f =kx to get k (constant)

k = f/x

x is the distance stretched , so 42 - 35 =7

so 107.8/7 =15.4

can someone double check

Answer:

k = 44000 N/m is the answer.

Explanation:

Gravitational Potential Energy = 770J

Elastic Potential Energy = 14% of 770J

= 14/100 × 770

= 107.8J

Extension (x) = 42 - 35 = 7cm = 7 × 10⁻²m

To find the spring constant (k)

Elastic Potential Energy Formula:

[tex]U = \frac{1}{2}kx^2[/tex]

107.8 = 1/2 × k × (7 × 10⁻²)²

215.6 = 0.0049 × k

k = 215.6/0.0049

k = 44000 N/m

Explanation:

[tex]speed : U = 20 \: m {s}^{ - 1} \\ {V}^{2} = {U}^{2} + 2aS \\ 0 = {20}^{2} + (2 \times a \times S) \\ a = \frac{200}{S} \: m {s}^{ - 1} [/tex]

Answer:

C. Photosynthesis

Explanation:

Photosynthesis is a process by which plants and photosynthetic bacteria obtain their food in presence of sunlight from water and carbon dioxide. They produce glucose as the food and oxygen is emitted as the byproduct. The equation for photosynthesis is - 6H2O+6CO2 → C6H12O6 + 6O2

Thus, the correct answer is 'C.Photosynthesis.'

Answer:

400N

Explanation:

F= ma

F= 100 x 4

F= 400N

Answer:

(This will depend on the type of fuel, I will assume that the fuel is petrol)

First, let's find the expected energy consumption in the US for the next 10 years.

We know that in one year, a person consumes 3.5*10^11 joules.

There are 310,000,00 people on the US

Then the total consumption in one year is:

310,000,000*3.5*10^11 joules = 1.085*10^20 J

In 10 years the consumption is 10 times the consumption of a single year, then the expected energy consumption in the US for the next 10 years is:

10*1.085*10^20 J = 1.085*10^21 J

Now let's find the mass of fuel required.

We know that a liter of petrol has 31,536,000 joules of energy,

And a liter of petrol weights 0.75 kg

To find the number of liters of petrol that we need, we need to find the quotient between the expected energy consumption in the next 10 years and the energy of a single liter of petrol, this is:

N = (1.085*10^20 J)/(31,536,000 j) = 3.44*10^13

We will need  3.44*10^13 liters of petrol.

And the total mass of petrol will be:

M = 3.44*10^13*0.75 kg = 2.58*10^13 kg of fuel.

Answer:

The material you're looking for is insulation.

Explanation:

It reduces and/or stops electricity waves, heat waves, and sound waves from going past.

Answer:

f=s/w

f=45/2.5=18

s means speed which is in m/s while w is wavelength which is Lamda

Answer: the divergent one goes where it looks like there a crack because when you think about divergent it means dividing like seperating.(igneous rock) is where the divegent one goes.

the one that is no plate boundary is sedimentary rock and it occurs by because there is nothing there for it todo there

Explanation:

Q.1 - V = u + at

u = 0, a = g = 9.8, t = 1

V = 0+9.8*1 = 9.8 m/s

Q 2- In horizontal position the velocity remains same hence a= dv/t, since change in velocity is zero the acceleration also equal to zero

Q.3- After neglecting the air resistance at 45° angle the maximum range is obtained.

let's prove, consider the range have maximum angle at θ, now range is given by

R = u²Sin2θ/g where sin2θ can we written as 2sinθ.cosθ.

Now the range value is directly proportional to the product of sin & cos of firing angle & this maximum value is obtained at 45°

Q.4 The range of two angle will be same if and only if they give 90° on addition.

20+x = 90,

x = 90-20 = 70°

Q.5 The motion with constant acceleration is known as uniformly accelerated motion.

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Answer:

Explanation:

1.

u=0m/s

v=?

a=9.8m/s²

t=1sec

now

we have

v=u+at

v=0+9.8*1

v=9.8m/s

3.

angle is measured in sin and cos angle where maximum angle's value is gained by 45°

4.

we have

range

R=[tex]\frac{u²sin2\theta}{g}[/tex]

For

angle =20°

R1=[tex]\frac{u²sin2*20}{g}[/tex].......[1]

another angle be [tex]\theta[/tex]

R2=[tex]\frac{u²sin2\theta}{g}[/tex].......[2]

since R1=R2

By comparing we get

Sin40=Sin([tex]2\theta[/tex])

Sin(180-40)=Sin([tex]2\theta[/tex])

we

140=[tex]2\theta[/tex]

[tex]\theta[/tex]=70°

Answer:

B

Explanation:

remember that you are looking for the value of the graph

to take into account or value a lot: prize, estimate to value your opinion. 2nd: estimate or assign the monetary value of: appraise a necklace. b: qualify or scale in utility, importance or general value: evaluate. value.

Answer:

rhastuutse5r says he n and happiness of

Explanation:

UKDIAMOND is a great place to live and live and live in the world best friend tum jio hjaro and happiness of the day and the day of the day of the day of the day of the day of the day of 2nd century and the day of the day of

Answer:

Isolated

Explanation:

According to the law of conservation of momentum, in a(n) isolated system, the initial total momentum before a collision equals the final total momentum. I just did it on A p e x.

Answer:

i would say the third one

Explanation:

may i be brainliest?

Answer:

Analog and digital signals are the types of signals carrying information. The major difference between both signals is that the analog signals have continuous electrical signals, while digital signals have non-continuous electrical signals.

Explanation:

Analog Signals   were used in many systems to produce signals to carry information.  These signals are continuous in both values and time. The use of analog signals has been declined with the arrival of digital signals. In short, to understand the analog signals –  all signals that are natural or come naturally are analog signals.  Digital Signals , unlike analog signals, digital signals are not continuous, but signals are discrete in value and time. These signals are represented by binary numbers and consist of different voltage values.  Their differences are as follows:

Analog Signals                                      Digital Signals

Continuous signals                               Discrete signals

Represented by sine waves               Represented by square waves

The Human voice, natural sound, analog electronic devices are few examples   Computers, optical drives, and other electronic devices

A Continuous range of values            Discontinuous values

Records sound waves as they are     Converts into a binary waveform.

Only be used in analog devices.        Suited for digital electronics like computers, mobiles, and more.

I think a Digital signal is better.

Answer:

negative charge

Explanation:

On an atomic scale, those are called "ions", and negatively charged ions are called anions.

We could choose to leave out the switch and simply join the wires together and the bulb will still light up.

A circuit is defined as pathway that has been designed for the flow of current. Now we know that a circuit must have a battery, connecting wires and the bulb itself.

However, we could choose to leave out the switch and simply join the wires together and the bulb will still light up.

Learn more about circuit: https://brainly.com/question/365923

Answer:

nuclear fission

Answer:

B. It changes the objects direction