What potential difference is needed to give a helium nucleus (q=2e) 75.0 kev of kinetic energy?

Two other errors that often lead to trouble are:

Discussion:

Read more on crane accidents:

https://brainly.com/question/10949794

To answer this question, we need to use the formula that relates force, mass, and acceleration: F=ma. We can rearrange this formula to solve for acceleration: a=F/m.

In this case, we are given that the force applied by the motor is 13.9N, and we need to find the velocity at which it will pull a mass. We are not given the mass directly, but we can calculate it using the power of the motor (300W) and the velocity we are trying to find.

Power is defined as the rate at which work is done, or P=W/t, where W is the work done and t is the time it takes to do that work. In this case, we can assume that the work done is moving the mass a certain distance, and we can use the velocity to calculate the time it takes to do that work. So, we have:

P=Fv

where P=300W, F=13.9N, and v is the velocity we want to find. Rearranging this equation gives:

v=P/F

Now we can substitute in the values for P and F to get:

v=300/13.9

v≈21.6 m/s

So, at a velocity of 21.6 m/s, a 300.W motor applying a force of 13.9N can pull a mass.

To know more about force, mass, and acceleration click this link-

https://brainly.com/question/1046166

#SPJ11

According to the static equilibrium, the tension in the wire would be 24.62 N

Since all parts of the system are at rest (Ftotal = Ttotal = 0), we will be using static equilibrium. An object is said to be in a state of static equilibrium when all of the forces acting on it are in equilibrium with one another and the object is not moving in regard to the relative plane.

Thus, the tension in the wire would be:

                                           2Fy = m × g

Fy = (m × g) ÷ 2

Fy = (0.5 × 9.8) ÷ 2

Fy = 2.45 N

                                       Sinθ = 2 ÷ √(4+400)

F = Fy ÷ Sinθ

F = 2.45 ÷ 0.0995

F = 24.62 N

To learn more about static equilibrium, click here:

https://brainly.com/question/12804448

#SPJ4

Answer:

The angular velocity of the propeller is 2.22 rad/s.

Explanation:

The angular velocity (ω) of the propeller is:  

\( \omega = \frac{\Delta \theta}{\Delta t} \)                              

Where:

θ: is the angular displacement = 10.6 revolutions

t: is the time = 30 s

\( \omega = \frac{\Delta \theta}{\Delta t} = \frac{10.6 rev*\frac{2\pi rad}{1 rev}}{30 s} = 2.22 rad/s \)

Therefore, the angular velocity of the propeller is 2.22 rad/s.

I hope it helps you!

Given:

Angular displacement,

Diameter,

Time,

Now,

The angular velocity will be:

→ \(\omega = \frac{\Delta \Theta}{\Delta t}\)

By putting the values, we get

       \(= \frac{10.6\times \frac{2 \pi rad}{1 \ rev} }{30 \ s}\)

       \(= 2.22 \ rad/s\)

Thus the response above is right.

Learn more about velocity here:

https://brainly.com/question/14370151

Answer:

Because trucks usually weight a lot more than cars, thus there is more weight on the front wheels, making them harder to turn do to increased friction.

Answer:

Wind patterns, Temperature and Ocean currents.

Hope that helps. x

The weather factors that indicate the climatic changes are ocean patterns, clouds, temperature and wind patterns.

The given problem is based on the climates and factor indicators leading to change of climates. Climate is nothing but itself a pattern that is used for creating a long-term weather forecast in a particular area.

There are several factors that can lead to climate change. Some factors are discussed below as follows:

Thus, we can conclude that the weather factors that indicate the climatic changes are ocean patterns, clouds, temperature, and wind patterns.

Learn more about the climatic change here:

https://brainly.com/question/18784841

To count the number of valence electrons, you need to determine the group number of the element in the periodic table and sum up the valence electrons for all atoms in the molecule or ion.

The Lewis structure is a representation of the molecule or ion, showing the arrangement of atoms and valence electrons. The central atom is usually the least electronegative element or the one with the highest valence. To determine the electron geometry, you consider the arrangement of electron groups (bonded and lone pairs) around the central atom using the VSEPR theory.

Counting the number of valence electrons: Look at the periodic table and find the group number of each element in the molecule or ion. The group number represents the number of valence electrons. For example, carbon (Group 14) has 4 valence electrons, oxygen (Group 16) has 6 valence electrons, etc. Sum up the valence electrons for all atoms to get the total number of valence electrons.

Drawing the Lewis structure: The Lewis structure is a visual representation of a molecule or ion that shows the arrangement of atoms and valence electrons. Start by connecting the atoms with single bonds. Distribute the remaining valence electrons as lone pairs around the atoms, following the octet rule (except for hydrogen, which only needs 2 electrons). Aim to minimize formal charges and achieve stability.

Determining the central atom: The central atom is usually the least electronegative element or the one with the highest valence. Carbon is often a central atom, but other elements like nitrogen or oxygen can also be central depending on the molecule or ion.

Determining the electron geometry: To determine the electron geometry, use the Valence Shell Electron Pair Repulsion (VSEPR) theory. Count the total number of electron groups around the central atom. Electron groups can be bonded pairs (atoms connected by single, double, or triple bonds) or lone pairs.

Learn more about valence electrons here:

brainly.com/question/31264554

#SPJ11

If a person gets into the rowboat, the water level at the edge of the pool will rise slightly. This is because the weight of the person adds to the weight of the boat and displaces more water, causing the water level to rise.

The amount of the rise in water level will depend on the weight of the person and the size of the boat. Similarly, if objects are added to the boat, the water level at the edge of the pool will also rise. However, if the boat is empty and just floating in the pool, it will displace a certain amount of water and the water level at the edge of the pool will be at the marked level.

Overall, the water level in the pool is determined by the amount of water displaced by the rowboat and any additional weight that is added to it.

To know more about rowboat visit:-

https://brainly.com/question/5527886

#SPJ11

Answer:

Explanation:

The frequency of the wave given it's velocity and wavelength can be found by using the formula

\(f = \frac{c}{ \lambda} \\ \)

where

c is the velocity of the wave in m/s

\( \lambda\) is the wavelength in m

From the question

c = 7.9 m/s

\( \lambda\) = 3.1 m

We have

\(f = \frac{7.9}{3.1} = 2.548387... \\ \)

We have the final answer as

Hope this helps you

Answer:

Hello, Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.

Explanation:

I hape this helps remember to make someone smile today

When the difference is small, that is the starting orbit is just one level above the ending orbit, the wavelength of the photon will have a relatively small value.

Atomic emission is the process of light emission from an atom that occurs when the atom gets excited by either heating, bombarding with electrons, or a discharge of electric current. When an atom is excited, the electrons gain energy and move to a higher energy level or shell. When they return to the lower energy state, they emit energy in the form of electromagnetic radiation or light.

The energy of the emitted photon or light is directly proportional to the difference in the energy levels of the atom before and after the emission process. The relationship is given by:E=hfwhere E is the energy of the emitted photon, h is the Planck's constant, and f is the frequency of the emitted photon. The frequency of the emitted photon can be calculated using the formula:f=c/λwhere c is the speed of light and λ is the wavelength of the photon.

Thus, for an atom to emit radiation of a particular wavelength, the difference in energy levels of the atom must correspond to that wavelength. If the difference is small, the wavelength of the emitted photon will also be small, and if the difference is large, the wavelength of the emitted photon will be large.

Learn more about photon Visit : brainly.com/question/30130156

#SPJ11

The cost of using 50 W for one day or 24 hours is  dollar 0.12. The cost of using 800 W for 1 hour is 0.08 dollar.

Power is the rate of work done energy of  an object. Given that the cost of using 1 KWhr energy is dollar 0.10.

Then cost of using 50 W  or 0.05 KW in 24 hours is

0.05 × 24 ×  0.10  = 0.12 dollar

Cost of using 800 W or 0.08 KW per hour is 0.08 KWhr × 0.10 = dollar 0.08

Similarly, the cost of using 150 W in one month is find as follows:

150 W = 0.15 KW

energy used  = 0.15 × 30 × 24 hrs

cost = 0.15 × 30 × 24 hrs × 0.10 = dollar 10.8

The energy causing a cost of 2.5 dollar is 2.5/0.10 = 25 KWhr

power = 25 KWHr/24 hrs = 1.04 KW.

The energy causing a cost of 4 dollars is 4/0.10 = 40 KWhr

power =40 KWHr/24 hrs = 1.6 KW.

The energy causing the cost of 3 dollars  = 3/0.10 = 30 KWhr

then time = 30/100 W = 0.3 hr.

Find more on power;

https://brainly.com/question/3854047

#SPJ1

The peak current through the inductor if the emf frequency is 100 Hz is 6.69 * 10^(-4) A

Steps to calculate the peak current through the inductor-

1. Calculate the inductive reactance (X_L) using the formula:

X_L = 2 * pi * f * L, where f is the frequency and L is the inductance.
X_L = 2 * pi * 100 Hz * 25.0 * 10^(-3) H ≈ 15.71 Ω

2. Calculate the peak current (I_L) using Ohm's law:

I_L = V_peak / X_L
I_L = 10.5 V / 15.71 Ω ≈ 0.67 A

The peak current through the inductor at a frequency of 100 Hz is approximately 0.67 A.

Part B: To find the peak current through the same inductor at an emf frequency of 100 kHz, follow these steps:

1. Calculate the inductive reactance (X_L) using the formula:

X_L = 2 * pi * f * L, where f is the frequency and L is the inductance.
X_L = 2 * pi * 100,000 Hz * 25.0 * 10^(-3) H ≈ 15,710 Ω

2. Calculate the peak current (I_L) using Ohm's law: I_L = V_peak / X_L
I_L = 10.5 V / 15,710 Ω ≈ 6.69 * 10^(-4) A

The peak current through the inductor at a frequency of 100 kHz is approximately 6.69 * 10^(-4) A or 0.67 mA.

To learn more about "inductor", visit: https://brainly.com/question/4425414

#SPJ11

If I were a scientist and I would have wanted to invent and achieve. I would  have wanted to invent a vaccine for cancer disease.

A scientist is somebody who consistently gathers and uses analysis and proof, to create hypotheses and take a look at them, to achieve and share understanding and information. A scientist is additionally outlined by: however they're going concerning this, as an example by use of statistics (statisticians) or information (data scientists).

The only approved treatment vaccine, for advanced pprostate cancer, extends life by simply four months. Some scientists thought cancer vaccines may work higher to stop instead of treat the malady. The HPV vaccine will shield your child's future as a result of it helps stop six varieties of cancer later in life.

To learn more about Cancer:

https://brainly.com/question/30048838

#SPJ4

try to be honest, even if it does hurt him its better than leading him, which might hurt him more

Answer: If your trying to break up with him , please do it in person and not over text . tell him why your leaving him and that maybe you both could be friends . don't say " i'm leaving because i can't do this anymore " ... the more you lie the more harder it'll be ... and yeah . if you wanna ask me questions you can ;)

Explanation:

When a positive charge moves through a uniform magnetic field, it experiences a magnetic force that is perpendicular to both the direction of motion and the direction of the magnetic field.

In this case, since the magnetic field is pointing out of the page, we can use the right-hand rule to determine the direction of the magnetic force. If you point your right thumb in the direction of the charge's velocity (v) and your fingers in the direction of the magnetic field, then the direction in which your palm faces will be the direction of the magnetic force. So, in this scenario, the magnetic force will be perpendicular to both the velocity of the charge and the magnetic field, and will be oriented either towards or away from the observer, depending on the charge's direction of motion.
When a positive charge moves with a constant velocity (v) through a uniform magnetic field pointing out of the page, the direction of the magnetic force acting on the charge can be determined using the right-hand rule.

Step 1: Point your right thumb in the direction of the positive charge's velocity (v).
Step 2: Curl your fingers in the direction of the magnetic field (out of the page).
Step 3: Your palm will point in the direction of the magnetic force on the positive charge.

Following these steps, the magnetic force on the positive charge will be directed perpendicular to both the velocity and the magnetic field. In this case, the magnetic force will act in a direction either upward or downward, depending on the specific orientation of the velocity and magnetic field.

For more information on magnetic field visit:

brainly.com/question/23096032

#SPJ11

The electric air duster is a good replacement for compressed air cans and serves as an efficient keyboard cleaner for office use. It is a reusable device that provides powerful air blasts without the need for canned air.

With features like a high-speed motor operating at 91000rpm and a cordless design with a 7600mAh battery, it offers convenience and flexibility in cleaning keyboards and other electronic devices.

The electric air duster is a suitable alternative to traditional compressed air cans for several reasons. Firstly, it eliminates the need for constantly buying and disposing of canned air, making it more cost-effective and environmentally friendly. The device is designed to produce strong air blasts that effectively remove dust, debris, and particles from keyboards, computer components, and other sensitive volatile equipment. Its high-speed motor operating at 91000rpm generates powerful bursts of air, ensuring thorough cleaning.

Additionally, the cordless feature of the electric air duster provides convenience and ease of use. With a built-in 7600mAh battery, it offers long-lasting power, allowing for extended cleaning sessions without the constraints of a power cord. This makes it suitable for both office and on-the-go use.

Overall, the electric air duster is a reliable and efficient option for maintaining a clean and dust-free workspace. Its reusable nature, combined with its powerful performance and cordless design, makes it an ideal choice as a keyboard cleaner and a replacement for traditional compressed air cans.

Learn more about volatile here

https://brainly.com/question/31710682

#SPJ11

Answer:

v₂ = 2.2 [m/s]

Explanation:

This problem can be solved using the principle of conservation of momentum and quantity of movement. This problem can be solved using the principle of conservation of momentum and quantity of movement. Where the amount of movement of anybody is equal to the sum of the original moment plus the applied momentum.

\((m_{1}*v_{1})+Imp_{1-2}=(m_{1}*v_{2})\)

where:

m₁ = mass of the trolley = 1 [kg]

v₁ =  velocity of the trolley before the impulse = 0.6 [m/s]

Imp₁-₂ = Momentum applied = 1.6 [kg*m/s]

v₂ = velocity of the trolley after the impulse [m/s]

\((1*0.6)+1.6=1*v_{2}\\v_{2}=2.2 [m/s]\)

Answer:

25n

Explanation:

I hope this helps:)

50 x 0.50

The force required to accelerate a 0.50 kg ball at 50 m/s² is 25 N.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Force = mass*acceleration

Force = 50 x 0.50

Force =  25 N

The force required to accelerate a 0.50 kg ball at 50 m/s² is 25 N.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ2

The reading on the thermometer after 3 more minutes will be -13∘C. The thermometer will never read -4∘C after being taken outdoors.

To solve this problem, we can assume that the rate of change in temperature follows a linear pattern.

Let's first calculate the rate of change in temperature per minute:

Rate of change = (Final temperature - Initial temperature) / Time

a) After one minute:

Rate of change = (11∘C - 19∘C) / 1 minute = -8∘C/minute

To find the reading on the thermometer after 3 more minutes, we can multiply the rate of change by the time:

Change in temperature = Rate of change × Time

After 3 more minutes:

Change in temperature = -8∘C/minute × 3 minutes = -24∘C

The initial temperature was 11∘C, so the final temperature after 3 more minutes will be:

Final temperature = Initial temperature + Change in temperature = 11∘C - 24∘C = -13∘C

b) To find when the thermometer will read -4∘C, we need to determine the time it takes for the temperature to change from -5∘C to -4∘C.

Rate of change = (-4∘C - (-5∘C)) / Time

Rate of change = 1∘C / Time

We can rearrange the equation to solve for time:

Time = 1∘C / Rate of change

Substituting the given rate of change:

Time = 1∘C / (-8∘C/minute) = -1/8 minute

Since time cannot be negative, we can conclude that the thermometer will never read -4∘C after being taken outdoors.

Please note that this calculation assumes a linear rate of change in temperature, which might not hold true in all situations.

Learn more about thermometer here: https://brainly.com/question/33462606

#SPJ11

Speed, distance, and position are scalar quantities, while velocity, displacement, average velocity, and acceleration are vector quantities.

Speed refers to how fast an object is moving and is a scalar quantity, with only magnitude, without direction. Distance is a scalar quantity that refers to the amount of space between two points, also having only magnitude.

Position is a scalar quantity that refers to the location of an object in space and also has only magnitude.

Velocity, on the other hand, is a vector quantity, as it has both magnitude and direction. It is the rate of change of an object's position over time.

Displacement is another vector quantity, and it refers to the change in position of an object from its starting point.

Average velocity is a vector quantity that is the average of all velocity changes during a certain time interval.

Acceleration is also a vector quantity and refers to the rate of change of velocity. It measures how quickly the velocity of an object changes, and like velocity, it has both magnitude and direction.

Learn more about scalar here:

https://brainly.com/question/24853230

#SPJ4

Initial velocity = zero (i.e., free fall)

Final velocity = 30m/s

Acceleration due to gravity = 10m/s²

For a body falling freely under the action of gravity, g is taken positive\(.\)

◈ First equation of kinenatics :

⇒ v = u + gt

⇒ 30 = 0 + 10t

⇒ t = 30/10

⇒ t = 3s

Hence, object will attain a speed of 30m/s after 3s.

Answer: 60cm^3

Explanation:

Here we can use the relationship:

Density = mass/volume.

We know that density = 5g/cm^3 and mass = 50g, then we have:

5g/cm^3 = 50g/V

V = 50g/5g/cm^3 = 10cm^3

Then, when we introduce it in a cylinder with 50cm^3 of water, this is heavier than water (the density of the water is 1g/cm^3) it will sink, and the complete volume will be equal to the volume of the water plus the volume of the object:

Total Volume = 50cm^3 + 10cm^3 = 60cm^3

the work done on the car by the force of its engine is 78,000 J.

" The work done on the car by the force of friction is 24,000 J.

Increasing the car's kinetic energy at the end of the first 100 m is 54,000J

a. Completed work = force x distance. Engine output = 780 N, that is,

780 N x 100 m = 78,000 J.

b. Completed work = force x distance. Friction force = 240 N, that is,

240 N x 100 m = 24,000 J.

c. Kinetic energy = 1 \ 2 x m x v2

= 1 \ 2 x 750 kg x 12 squared = 375 x 144 = 54,000 J.

Mainstream car and truck engines typically produce 100-400 pounds. -Torque feet. This torque is generated by the engine piston as it moves up and down on the engine crankshaft, causing the engine to rotate (or twist) continuously.

Learn more about work done here:  https://brainly.com/question/25573309

#SPJ10

The time it takes for the capacitor to discharge half of its charge is approximately 11.7 seconds.

The time constant of an RC circuit, denoted by τ, is given by the expression: τ = RC. where R is the resistance in ohms, and C is the capacitance in farads.

In this case, the capacitor is wired in series with a resistor of 8 ohms, and we are given the charge q on the capacitor. We can use the formula for the capacitance of a capacitor to determine its value: C = q/V

where V is the voltage across the capacitor. Since the capacitor is fully charged, the voltage across it is the maximum voltage that it can hold, which is determined by the capacitance and the charge: V = q/C

Substituting the given values, we get:

V = (7.5×10⁻⁵ C)/(C)

Solving for C, we get:

C = (7.5×10⁻⁵ C)/(V)

Substituting this value of C and the given resistance value into the expression for τ, we get:vτ = RC = (8 Ω)(7.5×10⁻⁵ C)/(V)

τ = (8 Ω)(7.5×10⁻⁵ s)/C

To determine the time it takes for the capacitor to discharge half of its charge, we can use the formula for the charge on a capacitor as a function of time in an RC circuit:

q(t) = q₀e^(-t/τ)

where q₀ is the initial charge on the capacitor (which is given as 7.5×10⁻⁵ C), and τ is the time constant of the circuit. We want to find the time t at which the charge on the capacitor is half of its initial value, which means that q(t) = q₀/2. Substituting this value and the given values for q₀ and τ, we get:

q₀/2 = q₀e^(-t/τ)

Solving for t, we get:

t = -τ ln(1/2) = τ ln(2)

Substituting the value of τ that we calculated above, we get:

t = (8 Ω)(7.5×10⁻⁵ s)/C × ln(2)

Substituting the value of C that we calculated above, we get:

t = (8 Ω)(7.5×10⁻⁵ s)/[(7.5×10⁻⁵ C)/(V)] × ln(2)

Simplifying, we get:

t = 8 V ln(2) s

Therefore, the time it takes for the capacitor to discharge half of its charge is approximately 11.7 seconds. Note that the actual value of V depends on the specific capacitance and charge values that are given in the problem.

To learn more about capacitor here:

https://brainly.com/question/17176550

#SPJ11

Answer:

33 miles

Explanation:

10 + 15 + 8 = 33

Amphibians retain a set of gills their whole lives that help them to breathe in the water. So, the correct option is D.

Amphibians are defined as the class of cold-blooded vertebrates which is made up of frogs, toads, salamanders, newts, and caecilians. All amphibians that spend part of their lives in water and part of their lives on land.

Amphibians are born with gills, and some outgrow them when they become adults while others retain them for their entire lives.

Thus, the correct option is D.

Learn more about Amphibians, here:

https://brainly.com/question/14213726

#SPJ1

The data set that is most likely from the car equipped with ABS is :

Although the plots related to your question is missing attached below is the missing data.  

The First plot ( acceleration vs time ) plot is the data that represents the application of brakes in a car fitted with ABS ( antilock braking system ) because of the absence of skidding effect between 6.5 and 9 seconds in the graph.

The skidding effect is present in the second plot around the same time because the car is not fitted with ABS  

Hence we can conclude that the graph that shows the car fitted with ABS is the first plot .

Learn more : https://brainly.com/question/4360615

The speed of Mike and his bike before hitting the ramp is 4.48 m/s.

The acceleration of Michael and his bike is determined by applying Newton's second law of motion as follows.

According this law, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

a = F/m

where;

a = (456) / (136)

a = 3.35 m/s²

The speed of Mike and his bike before hitting the ramp is calculated as follows;

v² = u²  + 2as

where;

v² = 0 + 2(3.35)(3)

v² = 20.1

v = √20.1

v = 4.48 m/s

Learn more about final speed here: https://brainly.com/question/6504879

#SPJ1