True or False. The entire world is
ultimately made up of three kinds of
particles: protons, neutrons, and
electrons.

A potential difference of 25.0 kV is needed to give a helium nucleus with a charge of 2e a kinetic energy of 50.0 keV.

To determine the potential difference required to give a helium nucleus a specific kinetic energy, we can use the equation for the kinetic energy of a charged particle accelerated through a potential difference.

The equation is given by:

KE = qV,

where KE is the kinetic energy, q is the charge of the particle, and V is the potential difference.

Given:

Kinetic energy (KE) = 50.0 keV = 50.0 x 10³ eV = 50.0 x 10³ x 1.6 x 10⁻¹⁹ J,

Charge (q) = 2e = 2 x 1.6 x 10⁻¹⁹ C (since the elementary charge e is 1.6 x 10⁻¹⁹ C).

We can rearrange the equation to solve for the potential difference (V):

V = KE / q.

Plugging in the given values:

V = (50.0 x 10³ x 1.6 x 10⁻¹⁹ J) / (2 x 1.6 x 10⁻¹⁹ C).

Canceling out the units and simplifying:

V = (50.0 x 10^3) / 2 = 25.0 x 10^3 V = 25.0 kV.

Therefore, a potential difference of 25.0 kV is needed to give a helium nucleus with a charge of 2e a kinetic energy of 50.0 keV.

know more about helium nucleus here

https://brainly.com/question/27800352#

#SPJ11

From Newton's second law of motion, the magnitude of the force applied is 1022.4 N

Force can simply be defined as a pull or push. It is the product of mass and acceleration and it is a vector quantity.

Given that Avery hurls the 0.527-kg football to Tyrone the ball reaches Tyrone with a speed of 19.4 m/s Tyrone catches the pass bringing it to a dead stop in 0.010 seconds before heading up field.

The force F applied to the ball  = mass × acceleration. That is,

F = ma

Where

Acceleration a = v/t

a = 19.4/0.01

a = 1940 m/s²

Force F = ma

F = 0.527 × 1940

F = 1022.4 N

Therefore, the force applied to the ball is 1022.4 N

Learn more about Force here: https://brainly.com/question/12970081

#SPJ1

(a) The kinetic energy of the electron in the first excited state of the hydrogen atom is -6.8 eV.

(b) The potential energy of the electron in the first excited state of the hydrogen atom is 3.4 eV.

(c) The choice of the zero of potential energy does not affect the values of kinetic and potential energy, only the overall reference point.

(a) To find the kinetic energy of the electron in the first excited state of the hydrogen atom, we need to subtract the potential energy from the total energy. The total energy is given as -3.4 eV, which includes both kinetic and potential energy components. Since the electron is in a bound state, the total energy is negative.

The kinetic energy is equal to the total energy minus the potential energy:

Kinetic energy = Total energy - Potential energy

In this case, the total energy is -3.4 eV, and the potential energy is the negative of the total energy:

Potential energy = -(-3.4 eV) = 3.4 eV

Therefore, the kinetic energy can be calculated as:

Kinetic energy = -3.4 eV - 3.4 eV = -6.8 eV

(b) The potential energy of the electron in the first excited state of the hydrogen atom is given as 3.4 eV. This represents the energy associated with the attraction between the electron and the proton in the hydrogen atom. Since the total energy is negative, the potential energy is positive, indicating a stable bound state.

(c) None of the answers above would change if the choice of the zero of potential energy is changed. The choice of the zero of potential energy is arbitrary and does not affect the relative values of the kinetic and potential energy components. It only affects the overall reference point for potential energy calculations. In this case, if the zero of potential energy were shifted, both the kinetic and potential energy values would change by the same amount, but their relative difference and the total energy would remain unchanged.

For more such information on: kinetic energy

https://brainly.com/question/30337295

#SPJ8

Answer:

2.3 kg m/s

Explanation:

It takes approximately 0.189 seconds for the bullet to stop moving within the tree trunk, assuming the frictional force is constant.

Frictiοn is the fοrce that resists mοtiοn when the surface οf οne οbject cοmes in cοntact with the surface οf anοther.

Given:

Mass of the bullet (m) = 7.80 g = 0.0078 kg

Initial velocity of the bullet (u) = 590 m/s

Final velocity of the bullet (v) = 0 m/s (since it stops moving)

Distance penetrated by the bullet (s) = 5.60 cm = 0.0560 m

To calculate the time it takes for the bullet to stop moving, we can use the equation of motion:

\(\rm v^2 = u^2 + 2as\)

Plugging in the values:

0² = (590 m/s)² + 2 * a * 0.0560 m

Simplifying:

0 = 348100 m²/s²+ 0.112 m * a

Rearranging the equation to solve for deceleration (a):

a = -348100 m²/s² / 0.112 m

a ≈ -3.107 × 10⁶ m²/s²

The negative sign indicates deceleration.

To find the time (t), we can use the equation:

a = (v - u) / t

Plugging in the values:

-3.107 × 10⁶ m²/s² = (0 m/s - 590 m/s) / t

Simplifying:

-3.107 × 10⁶ m²/s² = -590 m/s / t

Cross-multiplying:

-3.107 × 110⁶ m²/s² * t = -590 m/s

Dividing both sides by -3.107 × 10⁶ m²/s²:

t = -590 m/s / (-3.107 × 10⁶ m²/s²)

t ≈ 0.189 s

Therefore, it takes approximately 0.189 seconds for the bullet to stop moving within the tree trunk, assuming the frictional force is constant.

To learn more about Deceleration from the given link

https://brainly.com/question/75351

#SPJ4

Answer:

8.158 Kilograms Force

Explanation:

Answer:

8.1577297038

Explanation:

pls give brainlest

Answer:

If I were to guess I think its A

Explanation:

Answer:

Volume = 6.5499 x 10²³ cm³

Explanation:

The surface area of the ocean is given as follows:

Surface Area = (166241700 km²)(1 x 10¹⁰ cm²/1 km²) = 1.662417 x 10¹⁸ cm²

and the depth is given as:

Depth = 3940 m = 3.94 x 10⁵ cm

Therefore, the volume of the ocean can be given as follows:

\(Volume = (Surface\ Area)(Depth)\\Volume = (1.662417\ x\ 10^{18}\ cm^2)(3.94\ x\ 10^5\ cm) \\\)

Volume = 6.5499 x 10²³ cm³

The correct statements about a motor is, in a motor, an electric current creates a magnetic field.

first option is the correct answer.

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

Electric motor or dc motor works on the principle that when an electric current is passed through a conductor placed normally in a magnetic field, a force acts on the conductor as a result of which the conductor begins to move and mechanical energy is obtained.

Thus, we can conclude that an electric motor is an electrical device in which an electric current creates a magnetic field through the current flowing in the conductor.

Learn more about electric motor here: https://brainly.com/question/18619348

#SPJ1

Part A: The radius of curvature of the lens surface is approximately 3.17 m. Part B: The focal length of the lens is approximately 1.59 m.

Part A:

To find the radius of curvature of the lens surface, use the formula for the radius of the nth bright ring in a planoconvex lens:

r = √(n × λ × f),

where r = radius of the nth bright ring, λ = wavelength of light, and f = focal length of the lens.

In this case, n = 42 (since the last bright ring is observed at the edge), λ = 580 nm (converted to meters, so λ = 580 × 10⁻⁹ m).

Rearranging the formula, solve for f:

f = r² / (n × λ).

Plugging in the values:

f = (0.021 m²) / (42 × 580 × 10⁻⁹ m).

Calculating this expression gives:

f = 3.17 m.

Therefore, the radius of curvature of the lens surface is approximately 3.17 m.

Part B:

The focal length of the lens can be determined using the formula:

f = R / 2,

where R = radius of curvature.

Plugging in the value for the radius of curvature obtained in Part A:

f = 3.17 m / 2.

Calculating this expression gives:

f = 1.59 m.

Therefore, the focal length of the lens is approximately 1.59 m.

Find out more on radius of curvature here: https://brainly.com/question/29595940

#SPJ4

Answer:

The reading of the Geiger counter, 22 minutes later = 29 counts per minute (cpm)

Explanation:

Half life is defined as the time taken for the amount ( or activity) of a substance to reduce to half its original value.

As stated in the question, the half life of Francium-233 is 22 minutes, \(t_{1/2} = 22 minutes\). This means that it takes 22 minutes for the activity of Francium-233 to reduce to half of its original value.

The original activity of Francium-233 =  58 counts per minute (cpm)

By the end of 22 minutes, the activity measured by the counter would have halved.

Activity of Francium-233 after 22 minutes = 58/2

Activity of Francium-233 after 22 minutes = 29 counts per minute (cpm)

Answer:

The distance will be "0.319 m".

Explanation:

The diagram of the given question is not attached with the problem. Below is the attached figure.

The given values are:

\(q1 = -3.33\times 10^{-9} \C\)

\(q2 = -5.22\times 10^{-9} \ C\)

As we know,

The electric field will be equivalent as well as opposite throughout the direction, then

⇒ \(\frac{R.q1}{(0.255)^2} =\frac{R.q2}{r^2}\)

⇒ \(r^2=\frac{q2}{q1}\times (0.255)^2\)

By putting the values, we get

⇒      \(=\frac{-5.22\times 10^{-9}}{-3.33\times 10^{-9}}\times (0.255)^2\)

⇒      \(=1.568\times 0.065\)

⇒  \(r^2=0.10193\)

⇒  \(r=\sqrt{0.10193}\)

⇒     \(0.319 \ m\)    

If the distance from the source is doubled or increased by a factor of 2, then the intensity is quartered decreased by a factor of 4.

A sound wave's intensity is inversely related to density and speed and proportionate to the change in pressure squared.

The region that the sound waves cover grows as one gets farther from the source of the sound. The intensity and loudness of the sound are reduced because the same quantity of energy is dispersed over a larger region.

Inversely proportional to the square of the source's distance, the intensity varies.

Therefore, if the distance from the source is doubled or multiplied by a factor of 2, the intensity is reduced by a factor of 4 and then by a fourth.

When a time difference is twice, intensity is reduced by a factor of 4 each time.

Learn more about Intensity here:

https://brainly.com/question/10704742

#SPJ5

Answer:

Organic compounds are important because all living organisms contain carbon. They are the basic components of many of the cycles that drive the earth. For example, the carbon cycle that includes the exchange of carbon between plants and animals in photosynthesis and cellular respiration.

Answer:

S=29.298m/s

Explanation:

Use S=d/t

So, S=120m/4.1s= 29.298m/s

Explanation:

plzz if it helps you then plzz mark me brainliest

We will have that the picture that shows the highest average kinetic energy is image B.

Answer:

6.3 m/min

Explanation:

Circumference of a circle = 2πr

r = D/2 = 40m/2 = 20m

C = 2π(20m) = 125.7 m

speed = distance/time = (125.7 m) / (20  min)  = 6.3 m/min

The output voltage required of a defibrillating device will be 1700 V.

Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.

Given data;

I = 17 mA=17×10⁻³ A

R = 1×10⁵ ohm

Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.

This current-voltage connection may be expressed mathematically as,

The Equation of Ohm's Law

V=IR

V =17×10⁻³ A×  1×10⁵ ohm

V = 17 × 10²

V = 1700 V

Hence,the output voltage required of a defibrillating device will be  1700 V

To learn more of the ohm's law refer to the link;

https://brainly.com/question/796939

#SPJ1

Answer:

1)The connection should be tight.

2)The wire should be connected at the terminals not in between.

3)clean the ends of the wire by sandpaper.

4)Take the voltmeter and ammeter in proper range.

5)The rheostat should be used of low resistant(about 100).

Answer:

1. electrochemical reaction

2. combustion

3. photosynthesis

4. respiration

Explanation:

Answer:

afcorse 1 miles

Explanation:

yep plz make me the brainliest

The distance travelled by car is displacement which is

Displacement is defined to be the change in position of an object.

\(s=\frac{1}{2} (v+u)t\)

\(s=\frac{1}{2} (25+20)4\\s= 90 m\)

To learn more about Displacement here

https://brainly.com/question/11934397

#SPJ2

The height of the ball will rise after the bounce is 10 m by using the energy conserved.

Law of conservation of energy states that, in the closed system the energy remains constant in the system and its surroundings. It states that the energy can neither be created nor destroyed and the energy is transformed from one system to another.

From the given, When the ball rises up to a certain height, the kinetic energy is converted into potential energy, and hence the energy is conserved.

The total energy is conserved,

Energy = potential energy + Kinetic energy = constant

Kinetic energy = potential energy

1/2 (mv)² = mgh (Kinetic and potential energy, mass remains same).

speed of the ball (u) = 14.1 m/s

height of the ball=?

acceleration due to gravity, g = 9.8 m/s²

h = 14.1×14.1 / (2×9.8)

 = 9.9 m

Thus, the height of the ball is 10 m.

To learn more about the Law of conservation of energy:
https://brainly.com/question/28711001

#SPJ1

Given:

The charge is q1 = 9.4 nC

The charge q2 = -2.31 nC

The distance between them is r = 4.94 cm

To find the electric field strength at the midpoint between two charges.

Explanation:

The electric field strength at the midpoint will be the sum of electric field strength due to q1 and q2.

The electric field strength can be calculated by the formula

Here, k is the electrostatic constant whose value is

The electric field strength due to the charge q1 is

The electric field strength due to the charge q2 is

The electric field strength at the midpoint will be

Thus, the electric field strength at the midpoint between the two charges is 173000 V/m

Answer:

Cold temps. . .

Explanation:

Hope it helps!

An example of demonstrative evidence is the digital rendering of the crime scene that shows where the gun was fired from. That is option B.

A demonstrative evidence is the type of evidence that is being represented using visuals to help enhance the facts of a claim made against an opponent in the law court.

The components of demonstrative evidence include the following:

Based on the various evidence presented concerning the sudden death of Mr. Red Herring who was short dead in his backyard, the demonstrative evidence is when the forensics team also created a digital rendering of the crime showing where the gun was shot.

Learn more about forensics here:

https://brainly.com/question/19238665

#SPJ1

Options of question:

In this story, which is an example of demonstrative evidence?

The fingerprint that showed that Mrs. Scarlet handled the gun

The digital rendering of the crime scene that shows where the gun was fired from

The report about bullet striations that prove the shot came from the discarded weapon

The DNA evidence gathered from the blood splatters

B

Explanation:

I not sure try to solve I am sorry

Answer:

 W = 500 J

Explanation:

Work is defined by

         W = F . x

if we develop the dot product

         W = F x cos θ

where is the angle between the force and the displacement, in this case the angle is zero, so cos 0 = 1

          W = F x

indicate that each person applies a force of 500 N, so the total force is

         F = 1000 N

let's reduce the distance to the SI system

          x = 50 cm = 0.50 m

let's calculate

          W = 1000 0.50

          W = 500 J