PLS ANSWER FAST WILL GIVE BRAINLY!!!! ONLY IF YOU KNOW!!!


Fill in the blanks



Iron has 26 protons, 26 electrons and an atomic mass of 56. How many neutrons are in iron?

a) the linear speed of the tip of the minute hand is estimated at 8.73 × 10^-5 m/s.

b.  the centripetal acceleration of the tip of the minute hand is 1.21 × 10^-6 m/s^2.

The linear speed of the tip of the minute hand can be calculated using the formula:

v = rω

ω = Δθ/Δt = 2π/Δt = 2π/3600 rad/s

v = rω = (0.50 m)(2π/3600 rad/s)

V= 8.73 × 10^-5 m/s

b) The centripetal acceleration of the tip of the minute hand is found as

a = rω^2

a = (0.50 m)(2π/3600 rad/s)^2 = 1.21 × 10^-6 m/s^2

Learn more about centripetal acceleration at: https://brainly.com/question/19246433

#SPJ1

Therefore, we cannot calculate the exact time for one cycle without more information.

The time for one cycle of a planet around the Sun is determined by its orbital period, which is related to the average distance of the planet from the Sun. In this case, if the average distance of the planet from the Sun is 21 astronomical units (A.U.), we can use Kepler's Third Law to calculate the orbital period.

Kepler's Third Law states that the square of the orbital period (T) is proportional to the cube of the average distance (r) between the planet and the Sun. Mathematically, it can be expressed as:

T^2 = k * r^3

Where k is a constant.

Given that the average distance is 21 A.U., we can set up the following equation:

T^2 = k * 21^3

To solve for T, we need the value of the constant k. However, without further information or additional equations, we cannot determine the specific value of k. Therefore, we cannot calculate the exact time for one cycle without more information.

Learn more about Kepler's Third Law  here:

https://brainly.in/question/15032984

#SPJ11

The answer is C, 5.2

When friction from Earth's upper atmosphere does -7.5×10^9 J of work on a satellite, it means the satellite has lost that amount of energy due to friction.

To find the new orbital speed, we first need to determine the change in the satellite's kinetic energy. Since work done equals the change in kinetic energy, we have:
ΔKE = -7.5×10^9 J

Next, we can use the formula for kinetic energy: KE = 0.5 × m × v^2, where m is the satellite's mass and v is its speed. To find the change in speed, we rearrange the formula:
Δv^2 = 2 × ΔKE / m
Now, we can calculate the new speed by taking the square root of the sum of the initial speed squared and the change in speed squared:
v_new = sqrt(v_initial^2 + Δv^2)
By plugging in the values and solving for v_new, you'll obtain the satellite's new orbital speed after friction has done work on it.

To know more about friction visit:-

https://brainly.com/question/13000653

#SPJ11

To learn more about Kinetic theory :-https://brainly.com/question/14494290

#SPJ1

Answer:

f = 10 Hz

Explanation:

We need to find the frequency of a wave if 10 waves go past in 1 second. Total number of waves per unit time is called frequency. So,

\(f=\dfrac{10}{1}=10\ Hz\)

So, the frequency of a wave is 10 Hz.

The discovery that there is water ice on the Moon has motivated many nations to launch Moon missions because it could make a moon base possible.

Due in large part to water's value in making long-term lunar living practical, the hunt for lunar water has garnered significant attention and prompted several recent lunar missions.

Given how expensive it would be to transport water (or hydrogen and oxygen) from Earth, the availability of substantial amounts of water on the Moon would be a crucial component in making lunar habitation feasible.

Additionally, the water ice's hydrogen component might be used to extract the oxides from the lunar soil and produce even more oxygen.

Scientists could learn more about the Moon's history of impacts and the quantity of comets and asteroids in the early Inner Solar System by analysing the lunar ice.

To know more about Moon:

https://brainly.com/question/31739856

#SPJ4

Complete question is:

Why the discovery that there is water ice on the Moon has motivated many nations to launch Moon missions?

Speed of the baseball at the moment of contact is 34.27 m/s

Work  is the dot product of force  and displacement.

Here,

The mass of the baseball, m = 142x 10⁻³ kg

The displacement of the baseball, s = 12.9x 10⁻² m

Force applied = 588 N

So, Work done, W = F.s

     W = 588 x 142x 10⁻³

     W = 83.45 J

Let v₁ be the speed of  the baseball at the moment of contact with the  mitt. v₂ = 0 since the baseball comes to rest.

We know that, Work done  = Change in KE

       W = 1/2m (v₁²- v₂²)

       W = 1/2mv₁²

        v₁² = 2x W/m

        v₁² = 2x 83.45/(142x 10⁻³)

        v₁² = 1.175x 10³

         v₁ = 34.27 m/s

Hence the speed of the baseball at the moment of contact with mitt is 34.27 m/s.

To learn more about work, click:

https://brainly.com/question/29989410

#SPJ9

All for the sattement A, B, and E is True and satement C, D, and F is False where you learned about astronomy from space.

A .The Compton, Chandra and Spitzer telescopes are all examples of space telescopes.

-This statement is True.

B. Most types of electromagnetic waves are not visible to ground-based telescopes.

-This statement is True.

C. Enough infrared energy gets to Earth's surface that infrared telescopes do not need to be put in orbit.

-This statement is False.

D. Cosmic rays are the absolute highest-energy type of electromagnetic wave.

-This statement is False.

E. The Hubble Space Telescope makes observations at all wavelengths.

-This statement is True.

F. Earth's atmosphere has no effect on visible light, so there is no need to place an optical telescope in space.

-This statement is False.

Astronomy is the scientific study of celestial objects and phenomena, including stars, planets, galaxies, and the universe as a whole. Astronomers use various tools and techniques, such as telescopes, spectroscopy, and astrophysics, to observe and understand the properties and behavior of these celestial objects.

Through the study of astronomy, scientists have discovered many fascinating things about the universe, such as the existence of black holes, the age and size of the universe, and the formation and evolution of stars and galaxies. Astronomy has also played a significant role in advancing our understanding of fundamental physics, including the laws of gravity and the behavior of matter and energy at extreme conditions.

To learn more about Astronomy visit here:

brainly.com/question/30459099

#SPJ4

Answer:

1.36 x 10^(-9) N

Explanation:

The gravitational attraction between two objects can be calculated as

Where G is a constant equal to 6.67 x 10^(-11) m³/kg·s², m1 and m2 are the masses of the objects and r is the distance between them. So, replacing the values, we get:

Therefore, the gravitational attraction between them is 1.36 x 10^(-9) N

The electric field intensity at the same height but 2 meters away from the charge of a 1C electric charge is placed 1 meter above an infinite perfect conductor plane is -2kq/d² and and electric potential is -2kq/d.

The image method is a technique for calculating the electric field around a point charge placed near a conducting surface. The method involves creating an image charge on the opposite side of the conducting surface as the original point charge, which is a mirror of the original charge with respect to the surface. This image charge creates an electric field that cancels out the electric field created by the original charge at points on the surface.

To find the electric field intensity and electric potential at a point which is at a distance of 2 meters above the conducting plane and in line with the point charge, let’s assume that the image charge is located at a distance ‘d’ below the conducting plane. Therefore, the potential due to the image charge at a point P (which is at a distance of 2 meters above the conducting plane and in line with the point charge) will be,

Vi = -kq/d... (i)

where k is Coulomb’s constant and q is the charge of the point charge. As the image charge is on the opposite side of the conducting plane, the potential at the point P due to the image charge will be,

Vi’ = -kq/d... (ii)

Using the principle of superposition, the total potential at the point P is given as,

V = Vi + Vi’

V = -kq/d - kq/d

V = -2kq/d

Therefore, the electric field intensity at the point P due to the point charge will be,

E = -dV/dy

E = -d/dy(-2kq/d)

E = -2kq/d²

We have already calculated the potential due to the image charge at point P in equation (ii),

Vi’ = -kq/d

Therefore, the electric potential at point P due to the point charge is given as,

V = Vi + Vi’

V = -kq/d + (-kq/d)

V = -2kq/d

Therefore, the electric potential at the point which is 2 meters away from the charge and in line with it is given by, -2kq/d.

Learn more about electric field intensity : https://brainly.com/question/33167286

#SPJ11

Answer:

To answer your question:

a) The formula to calculate the number of wavelengths within a laser pulse is:

number of wavelengths = pulse duration / wavelength

Plugging in the values given in the question, we get:

number of wavelengths = 38 ps / 1062 nm

Converting picoseconds to seconds and nanometers to meters, we get:

number of wavelengths = 38 x 10^-12 s / 1062 x 10^-9 m

number of wavelengths = 0.0358

Therefore, there are approximately 0.0358 wavelengths within the laser pulse.

b) To fit only one wavelength, the pulse duration would need to be equal to the wavelength. The formula to calculate the pulse duration is:

pulse duration = wavelength

Plugging in the value given in the question, we get:

pulse duration = 1062 nm

Converting nanometers to picoseconds using the speed of light ©, we get:

pulse duration = wavelength / c

pulse duration = 1062 x 10^-9 m / 3 x 10^8 m/s

pulse duration = 3.54 x 10^-12 s

Therefore, the pulse would need to be approximately 3.54 ps long to fit only one wavelength.

I hope this helps

Answer:

The magnitude of the boy's displacement is 24.698 paces which is in the direction of approximately 58.24° North of East

Explanation:

The given parameters are;

The distance West the boy on a treasure hunt walks = 12 paces

The distance North the boy on a treasure hunt then walks = 21 paces

The distance East the boy on a treasure hunt then walks = 25 paces

Writing the displacement in vector format, gives;

d = -12·i + 21·j + 25·i

Which gives

d = 13·i + 21·j

The magnitude of the boy's resultant displacement is given as follows;

\(\left | \mathbf{d} \right | = \sqrt{d_x^2 + d_y^2}\)

Where;

\(d_x = 13, \ d_y = 21\)

\(\left | \mathbf{d} \right | = \sqrt{13^2 + 21^2} = \sqrt{610} \approx 24.698 \ paces\)

The magnitude of the boy's displacement is 24.698 paces

The direction of the displacement is tan⁻¹(21/13) ≈ 58.24° North of East.

Answer:

Explanation:

(I) Electrical energy into sound energy. (ii) Heat energy into kinetic energy (or mechanical energy). (iii) Chemical energy into kinetic energy (or mechanical energy). (iv) Chemical energy into heat energy

The velocity of the ball before and after collision as V₁ = 41m/s and V₂ = 37m/s respectively, and the mass of the ball as m.The velocity of the bat = 37m/s (opposite direction to the ball). Therefore, the relative velocity of the ball with respect to the bat, V = V₁ - V₂= 41 - 37 = 4 m/s.The coefficient of restitution (e) is defined as the ratio of the relative velocity of separation to the relative velocity of approach.e = V₂’ - V₁’ / V₁ - V₂, where V₂’ and V₁’ are the velocities of the ball and bat after collision.e = V₂’ / V₁ = (77 - 0.11m) / 37, V₂’ = (77 - 0.11m)  37 / 37 = 77 - 0.11m.

The velocity of the ball is u(m) = 77 - 6.87/m + 0.11m/s.Understanding:

Calculation:

Interpretation:

A ball with higher velocity can travel farther when hit with a bat. Therefore, it is always an advantage to use a heavier ball.u’(0.9) = 8.81 m⁻²/s, u’(1.5) = 5.60 m⁻²/sRate of increase of speed is u’(m).Answer:u’(0.9) ≈ 8.81 m⁻²/s, u’(1.5) ≈ 5.60 m⁻²/s.The rate at which this speed is increasing is u’(m).

Velocity is a foreign term that means speed. Speed ​​is the locking of an object every single unit of time. Acceleration or acceleration is the change in velocity in a certain unit of time. The acceleration of an object is caused by a force acting on the object, as explained in Newton's second law. The SI unit for acceleration is meters per second squared (m s−2). What is the difference between speed and pace? Velocity or speed is the quotient between the distance traveled and the time interval. Velocity or speed is a scalar quantity. Speed ​​​​or speed is the result of separation with an interval. Speed ​​or velocity is a vector quantity.

Learn More About Velocity at https://brainly.com/question/29523095

#SPJ11

Answer:

Electrons move in specific orbits in the modern model.

Explanation:

I'm still learning so, and D is not the answer.

The main difference between the cloud model of the atom and the modern model is that electrons exist in a cloud around the nucleus in the cloud model.

New theories usually don’t start “from scratch.” For example, the modern model of the atom is the result of new information added to the cloud model.

What is the main difference between the cloud model of the atom and the modern model?

The main difference between the cloud model of the atom and the modern model is that electrons exist in a cloud around the nucleus in the cloud model.

You can learn more about atomic models here: https://brainly.com/question/1596638

When an astronomer rambles on and on about the luminosity of a star she is studying, she is talking about  the amount of energy the star gives off each second.

Luminosity and apparent brightness are about brightness, but from a different point of view. The difference between luminosity and apparent brightness is that luminosity tells us exactly how bright a star really is while apparent brightness only tells us its brightness seen from Earth.

L / Lsun = ( d / dsun )² = b / bsun

L = Luminosity of a star

Lsun = Luminosity of sun

d = Distance of star

dsun = Distance of sun

b = Brightness of star

bsun = Brightness of sun

Therefore, when an astronomer rambles on and on about the luminosity of a star she is studying, she is talking about  the amount of energy the star gives off each second.

To know more about luminosity

https://brainly.com/question/13945214

#SPJ4

Answer:

0.015 seconds

Explanation:

5/330=0.015

Answer:

0.015 seconds

Explanation:

divide 5 m and 330 m/s to get 0.015 seconds.

Given :

An object with a volume of 9 cm³ is completely submerged in the water.

To Find :

How much water is displaced by the object.

Solution :

According to Archimedes' principle, the amount of volume displaced of fluid when an object is fully and partially submerged into that is equal to the volume of the object below the surface of liquid.

Now, it is given that object is fully submerged into water.

Therefore, volume of water displaced by the object is 9 cm³.

Answer:

In order to convert density to grams, you have to put the mass on one side of the equation, and the density and the volume on the other. Therefore, d * v = m. Multiply the density by the volume. Using the example in step 1, you would multiply 2 g/mL by 4mL.

Explanation:

ok

The correct answer is option (A). The fact that a thermometer "takes its own temperature" illustrates the concept of thermal equilibrium.

Thermal equilibrium refers to a state where two objects or systems are at the same temperature and there is no net transfer of heat between them. In this case, the thermometer, being in thermal contact with its surroundings, eventually reaches a state of equilibrium where it shares the same temperature as its environment. Once thermal equilibrium is reached, the thermometer accurately reflects the temperature of its surroundings, effectively "taking its own temperature."

The concept of thermal equilibrium highlights the idea that heat transfer occurs until a balanced state is achieved. It is a manifestation of energy conservation because, in the process, energy is conserved. Heat refers to the transfer of thermal energy between objects, while internal energy represents the total energy stored within a substance, including both its kinetic and potential energies.

Learn more about thermal equilibrium click here: brainly.com/question/29419074

#SPJ11

Less than 45° would be the angle that the string would create horizontally if the sphere-Earth system's kinetic and potential energies were equal.

The pull that binds the gases in the sun together is one illustration of the gravitational force. a ball you throw in the air will come crashing down due to this force. the force that keeps an automobile from coasting downhill even when the gas is off.

Our term gravity and its more specific derivation gravitation are derived from the Latin word gravitas, from gravis (heavy), which in turn derives from an even older root word that is believed to have existed due to multiple cognates in related languages.

To know more about gravitational visit;

https://brainly.com/question/3009841

#SPJ4

Hi there!

We can begin by calculating the distance remaining after the reaction time.

Δd = vt

Calculate the distance traveled within this time:

Δd = (16)(.79) = 12.64 m

Subtract from the total distance:

150 - 12.64 = 137.66 m remaining

We can use the following equation to solve for the acceleration necessary:

vf² = vi² + 2ad, where vf = 0 since the train will have slowed down to rest.

Rearrange in terms of "a":

0 = vi² + 2ad

(-vi²) = 2ad

(-vi²)/2d = a

Plug in the given values:

(-(16²))/2(137.66) = a

-256/275.32 = -.9298 m/s²

Explanation:

heat engine is correct answer

Answer:

The answer is:

C) A Furnace

The acceleration of the object with an applied force of 100N and a mass of 50kg is 2m/s².

Acceleration is defined as the change in velocity per unit time. Velocity is defined as the speed of the object in a particular direction. The acceleration is a vector quantity. The unit of acceleration is m/s².

According to Newton's second law, Force is directly proportional to the acceleration of the object. F = m×a, where F is the force of the object, m is the mass of the object and a is the acceleration of the object.

From the given,

Force, F = 100N

mass of the object, m=50kg

acceleration of the object, a=?

F = m×a

a =F/m

  = 100/50

  =2m/s².

Thus, the acceleration of the object is 2m/s².

To learn more about Acceleration:

https://brainly.com/question/30660316

#SPJ4

Answer: The velocity of the bird is 7m/s

Explanation: Since momentum is the total quantity of the motion which is contained in the body.

It is defined as the multiply of mass and velocity of the body

It is given in the question that mass of bird is 2.5 kg and momentum is 17.5 kg/s.

Answer:

6.67 ohm

Explanation:

From the question given above, the following data were obtained:

Resistor 1 (R₁) =20 ohm

Resistor 2 (R₂) = 20 ohm

Resistor 3 (R₃) = 20 ohm

Equivalent Resistance (R) =?

Since the resistors are arranged in parallel connection, the equivalent resistance can be obtained as follow:

1/R = 1/R₁ + 1/R₂ + 1/R₃

1/R = 1/20 + 1/20 + 1/20

1/R = (1 + 1 + 1) / 20

1/R = 3/20

Invert

R = 20/3

R = 6.67 ohm

Therefore, the equivalent resistance is 6.67 ohm.

Answer:

I think B but im not sure

Explanation:

Answer: i think both mirrors are used to reflect the beam of light.

Explanation:

gr 10 science right? im almost done the semester and i learnt this already so i think the best answer is the last one