The potential difference between two parallel conducting plates in vacuum is 165 V. An alpha particle with mass of 6.50×10-27 kg and charge of 3.20×10-19 C is released from rest near the positive plate. What is the kinetic energy of the alpha particle when it reaches the other plate? The distance between the plates is 40.0 cm.
Answers
Answer:
kinetic energy (K.E) = 5.28 ×10⁻¹⁷
Explanation:
Given:
Mass of α particle (m) = 6.50 × 10⁻²⁷ kg
Charge of α particle (q) = 3.20 × 10⁻¹⁹ C
Potential difference ΔV = 165 V
Find:
kinetic energy (K.E)
Computation:
kinetic energy (K.E) = (ΔV)(q)
kinetic energy (K.E) = (165)(3.20×10⁻¹⁹)
kinetic energy (K.E) = 528 (10⁻¹⁹)
kinetic energy (K.E) = 5.28 ×10⁻¹⁷
Related Questions
is it polar or non-polar... i need help on all of them plz hurry
Answers
1.) non-polar
2.) non-polar
3.) Polar
4.) Polar
Non-polar molecules are essentially molecules that have an even distribution of of electrical charges.
Polar molecules is the separation of electric charges, having one positive end and another negative end.
Explain how scientists law is created? Plz Help me
Answers
Answer:
the laws of science or statements based on repeated experiments or observations that describe or predict a range of natural phenomena laws are developed from data and can be further developed through mathematics in all cases they are directly or indirectly based on empirical evidence
The relationship between frequency and period is...
Answers
\( \\ \)
Frequency, f, is how many cycles of an oscillation occur per second and is measured in cycles per second or hertz (Hz). The period of a wave, T, is the amount of time it takes a wave to vibrate one full cycle. These two terms are inversely proportional to each other: f = 1/T and T = 1/f.
\( \\ \)
Hope It Helps!
Answer:
Inverse
Explanation:
Frequency is the number of cycles in a second. Frequency is the inverse of a period
frequency = 1 / period
How do supersonic flights create sonic boom? Please explain in detail.
Answers
Supersonic flights are moving with speed greater than that of sound. This speed through air will combine the pressure waves and creates shock waves. Continuation of shock waves leads to sonic boom in air.
What is sonic boom ?Sonic booms are sound created on the ground by overpressure in the air generated by fastly moving objects. Similar to someone dumping goods from a moving car, an aircraft travelling at supersonic speeds continuously produces shock waves that cause sonic booms to travel throughout its flight path.
The boom seems to be swept rearward as it moves away from the aeroplane from its point of view. The boom will strike the ground in front of the aircraft if the aircraft makes a rapid turn or pulls up.
The abrupt start and release of pressure following the building by the shock wave or "peak overpressure" is what is heard as a "sonic boom" on the ground. Only a few pounds per square foot change in pressure results from a sonic boom, which is about equivalent to the pressure shift we experience in an elevator.
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A uniform copper wire has a resistance of 100 ohms. If the wire is cut into 10 equal lengths, what will be the resistance of each piece
Answers
Answer:
Since resistance is proportional to length R = K L / A
the resistance of each piece would be R / 10 = 10 ohms
A copper wire is the conductor wire. If the wire is cut into 10 equal lengths, the resistance of each piece will be 10 ohms.
What is resistance?Resistance is the opposition to the flow of electrons in the conductor wire.
Given is the total resistance of the wire is 100 ohms.
Resistance is directly proportional to the length of the wire. When the wire is cut into 10 pieces, the new resistance will be
\(\dfrac{R}{10} =\dfrac{100}{10} =10 \:\rm ohms\)
Hence, the resistance of each piece will be 10 ohms.
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An object has an acceleration of 12.0 m/s/s. If the net force was doubled and the mass were tripled, then the new acceleration would be _____ m/s/s.
Answers
✴ Case - I
⟶ Force = F
⟶ Mass = m
⟶ Acceleration = 12m/s²
✴ Case - II
⟶ Force = 2F
⟶ Mass = 3m
To Find :➳ Acceleration in second case.
Concept :⇒ This question is completely based on the concept of newton's second law of motion.
⇒ As per this law, Force is defined as the product of mass and acceleration.
Mathematically, F = ma
Calculation :\(\implies\sf\:\dfrac{F_1}{F_2}=\dfrac{m_1\times a_1}{m_2\times a_2}\\ \\ \implies\sf\:\dfrac{F}{2F}=\dfrac{m\times 12}{3m\times a_2}\\ \\ \implies\sf\:\dfrac{1}{2}=\dfrac{4}{a_2}\\ \\ \implies\sf\:a_2=4\times 2\\ \\ \implies\underline{\boxed{\bf{a_2=8\:ms^{-2}}}}\)
New acceleration would be 12 m/s²
Given that;
Acceleration of object = 12 m/s²
New net force = 2f
New mass = 3m
Find:
New acceleration
Computation:
\(\frac{F1}{F2} = \frac{m1a1}{m2a2} \\\\\frac{f}{2f} = \frac{m(12)}{(3m)a2} \\\\\frac{1}{2} = \frac{4}{a2} \\\\a2 = 8 m/s^2\)
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PLS HURRY!!!! 15 PTS!!! The pictures represent three different states of matter.
Which order of pictures places molecules with the most
amount of motion to the least amount of motion?
O X Y Z
O ZYX
O Y Z
O Y - X - Z
Answers
I’m so sorry if I’m wrong!!!
An owl has a mass of 4 kg. It dives to catch a mouse, losing 800 J of its GPE. What was the starting height of the owl, in meters?
Answers
The owl started out at a height of about 3.2 metres.
What is gravity?Gravity is the force that draws objects toward the center of a planet or other object.
How do you determine this?Gravitational potential energy (GPE) is calculated as follows:
GPE = mass x gravity x height. Since we are aware of the owl's mass (4 kg) and the change in GPE (-800 J) in this case, we can rewrite the formula to account for the height: tallness = GPE / (mass x gravity).
On Earth, the acceleration caused by gravity is roughly 9.8 m/s2.
By entering the known numbers, we obtain the height change as follows: -800 J / (4 kg x 9.8 m/s2) = -0.408 metres.
By combining the ultimate height (which is believed to be 0 metres) with the height change, we may get the initial height as follows: 0 m + (-0.408 m) = -0.408 m = 0.408 m = 3.2m.
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If a quarterback gets hit by a defensive lineman with a mass of 100 kg and accelerating at a rate of 1m/s2 at what force is the quarterback getting hit?
Answers
The quarterback is getting hit with a force of 100 Newtons.
How to calculate the force with which the quarterback is getting hit
We can use Newton's second law of motion:
Force = Mass * Acceleration
Given that the mass of the defensive lineman is 100 kg and the acceleration is 1 m/s², we can substitute these values into the equation:
Force = 100 kg * 1 m/s²
Force = 100 N
Therefore, the quarterback is getting hit with a force of 100 Newtons.
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What geologic feature would you be most likely to find at a divergent plate boundary where two oceanic plates move away from each other? a mid-ocean ridge a rift valley an island arc an ocean trench
Answers
Answer: When two plates are moving away from each other, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.
Explanation:
I HOPE THIS HELPED YOU I AM OPEN IF YOU WANTS ANSWERS GOOD LUCK BY THE WAY!
The geologic feature that you would be most likely to find at a divergent plate boundary where two oceanic plates move away from each other is a mid-ocean ridge.
A mid-ocean ridge is a long mountain range that forms on the ocean floor where two tectonic plates are moving apart. As the plates move apart, magma rises from the mantle and solidifies, forming new oceanic crust. The continuous addition of new crust along the mid-ocean ridge causes the plates to move apart, resulting in the creation of new ocean floor. The mid-ocean ridge is a prominent feature of divergent plate boundaries in the oceanic crust.
heeeeeeeeeeeeeeeeeeeeeeeelp
Answer and I will give you brainiliest
Answers
Answer:
They are affected by weather changes
Answer:
I'm pretty sure it's D. ;)
A car travels up a hill at a constant speed of 35 km/h and returns down the hill at a constant speed of 69 km/h. Calculate the average
speed for the round trip.
Answers
(PLEASE GIVE BRIANLIEST)
The average speed is not equal to the sum of the speeds divided by 2 because the car takes different times to cover the distance while going up and coming down the hill.
The average speed can be calculated as the total distance covered divided by the total time taken. As the speeds are constant, we can use the formula:
distance = speed * time
Let the distance traveled be "d". The time taken to go up the hill is "t1" and the time taken to come down is "t2".
d = 35 * t1 = 69 * t2
The total time taken for the round trip is t1 + t2.
The average speed is given by:
average speed = d / (t1 + t2) = d / (d/35 + d/69)
So the average speed can be calculated as follows:
average speed = d / (d/35 + d/69) = d * (35 + 69) / (35 * 69) = 104 / 2445 = 8 / 205 km/h
PLEASE HELP ON QUESTION ASAP !
hi ! I really need help understanding paragraph and I've also added a question about paragraph by me down below . Would like explanation in simple words.
If answers correct I'll rate you five stars a thanks and maybe even brainliest
Paragraph I needed help understanding:
If two or more cells are connected together side by side, the voltage across them is sum of the voltage of each cell. This is because both cells are pushing same way.
My Question about paragraph:
If the sum lets say was 4.5v would every individual cell be worth 4.5 as it says in question ' voltage across them is the sum of voltage of each cell ' or are they each a different value? And how would we be able to find value?.
Answers
The voltage across a group of cells connected in series is the sum of the voltages of each individual cell.
In the given paragraph, it states that when two or more cells are connected together side by side, the voltage across them is the sum of the voltage of each cell. This means that if you have two cells connected together, the total voltage across them would be the sum of the voltage of each individual cell.
Let's consider an example where you have two cells connected in series and the total voltage across them is 4.5 volts. In this case, it means that the voltage of each individual cell is not necessarily 4.5 volts. The total voltage is the combination of the voltages of both cells.
To find the voltage of each individual cell, you need to know the total voltage and the number of cells connected. In this example, if you have two cells and the total voltage is 4.5 volts, it would mean that each cell has a voltage of 2.25 volts. This is because the total voltage is divided equally among the cells when they are connected in series.
To summarize, the voltage across a group of cells connected in series is the sum of the voltages of each individual cell. The individual voltage of each cell can be found by dividing the total voltage by the number of cells connected.
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Is Solar Energy renewable? Why or why not? Use in your own words.
Answers
Answer:
Solar energy is renewable.
Explanation:
If something is renewable, it is generated faster than it can be reasonably used or won't run out for longer than it would be used. Solar falls into the latter category. Using solar panels won't deplete the sun and the sun will likely be around for much longer than we will.
Philip drives his car at a velocity of 28 m/s he applies the break which slows the vehicle down at a rate of six. 4 m/s2 and it causes it’s to slow to stop how long does it take for the car to stop answer to the nearest 10th?
Answers
Where,
a: acceleration
vo: initial speed
t: time
Clearing the time we have:
Substituting values we have:
it takes 4.375 s for the car to stop
What is the key for a successful relationship? and Why?
Answers
Answer:
communication, if you don't talk you'll never know what's going on.
Explanation:
are cells smaller and simpler than either tissues or organs
Answers
Answer:
yes
Explanation:
tissues and organs are made of cells therefore cells have to be smaller and simpler
A point charge q1=2 μC is at the center of a conductive sphere of 0.5 m radius, which is connected to earth.
a) Find the value of the electric field in every region of space What is the strength of the field at a point above the surface? of the sphere.
b) What is the flow of the electric field due to charge? Point through the surface of the sphere? Will the response of the Previous point if the charge is not in the center of the sphere?
Answers
Answer:
Explanation:ans:0 . Because when we connect this conductive sphare with earth then all charge will be gone in earth
A roller coaster is at a peak of 20m and has a mass of 900kg. What is the potential energy of the roller coaster?
O 100000 J
10000 J
O 9.8 J
O 176400 J
Answers
The potential energy of the roller coaster is 176,400 J (joules).
The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.
In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).
Using the formula, we can calculate the potential energy:
PE = mgh
= (900 kg)(9.8 \(m/s^2\))(20 m)
= 176,400 J
Therefore, the potential energy of the roller coaster is 176,400 J (joules).
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A 150 kg box containing construction materials is being moved with the use of a wooden boom. What is the tension T in the cable and the magnitude and the direction of the compression force C exerted on the strut by the pivot as shown in the diagram. Neglect the weight of the wooden boom.
Answers
The tension T in the cable is equal to the weight of the box, or 150 kg. The magnitude of the compression force C is also equal to the weight of the box, or 150 kg. The direction of the compression force C is perpendicular to the strut and pointing towards the pivot.
What is tension?Tension is a state of physical or mental strain resulting from opposing forces. It is a state of balance between forces that oppose each other, or the internal struggle between two opposing needs or desires. Tension can be experienced in a variety of ways, including physical, psychological, and emotional. Physically, tension can manifest itself as muscular tightness, headaches, or other forms of pain. Psychologically, tension may be reflected in anxiety, fear, frustration, or anger. Emotionally, tension can be experienced as sadness, depression, or despair. By understanding and managing our tension, we can take better control of our lives, and lead healthier, happier existences.
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The out side diameter of the playing area of an optical Blu-ray disc is 10.5cm, and the inside diameter is 4.75cm. When viewing movies, the disc rotates so that a laser maintains a constant linear speed relative to the disc of 8m/s as it tracks over the playing area.1) what is the average angular acceleration of a blu-ray as it plays 6.5h set of movies?
Answers
ANSWER:
0.00788 rad/s^2
STEP-BY-STEP EXPLANATION:
The radius is equal to half the diameter, therefore:
r1 = d1/2 = 10.5/2 cm = 5.25 cm = 0.0525 m
r2 = d2/2 = 4.75/2 cm = 2.375 cm = 0.02375 m
s = 8 m/s
t = 6.5 h = 23400 sec
The first thing is to calculate the maximum angular speed and the minimum angular speed, like this
\(\begin{gathered} \omega_{\max }=\frac{v}{r_2}=\frac{8}{0.02375}=336.84 \\ \omega_{\min }=\frac{v}{r_1}=\frac{8}{0.0525}=152.38 \\ \omega=\omega_{\max }-\omega_{\min }=336.84-152.38 \\ \omega=184.46\text{ rad/s} \end{gathered}\)Now, the average angular acceleration would be the angular speed divided by the elapsed time:
\(\alpha=\frac{\omega}{t}=\frac{184.46}{23400}=0.00788rad/s^2\)The average angular acceleration is 0.00788 rad/s^2
Explain why your PE and KE are usually not both high at the same time (If PE is high then usually KE is low)
Answers
Answer:
An object can have both kinetic and potential energy at the same time. ... As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy. Another important concept is work.
Explanation:
Answer:
KE:
energy which a body possesses by virtue of being in motion.
PE:
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
Explanation:
Your welcome
formula for percentage error
Answers
Answer:
PE = (|accepted value – experimental value| \ accepted value) x 100%
Explanation:
EXPERIMENT: COMPARING HARDNESS AND DENSITY OF SOLIDS 100 POINTS I NEED THIS DONE
In this activity, you will identify several minerals, then you will compare the minerals to determine if there is a relationship between the hardness of a sample and its density. You should consider the factors that determine the density and the hardness of a material and then form a hypothesis as to whether you believe these two properties will show a correlation. If they show a correlation, it may indicate that one property depends on or is in some way related to the other property. You should consider this in making your hypothesis. If two properties have a positive correlation, then the graph of their values will be a straight line. You will use this fact to test the accuracy of your hypothesis.
OBJECTIVES
Use several tests, including hardness to identify 6 minerals.
Using hardness and density data, creating a graph.
Explain how to interpret a positive or negative correlation between graphed values.
Answers
Answer:
sbdjhdjrjrjrjrjrbdhhrhejejejejejejejejdndndjsj
Answer: My hypothesis was that the future results of the experiment would show a correlation. According to my data, my hypothesis was correct. The file uploaded to this assignment shows that the graph is a correlation but not a 100% positive correlation because if you imagined there was a straight line there, the points would be completely aligned. The correlation is simply a “positive correlation”. Some of the difficulties I had when performing the experiment was distinguishing which type of luster was for each mineral because the light almost looked the same with other minerals. You might change the procedure to avoid this problem in the way of getting all the rest of the results for that specific mineral and then look at which of the graph with the answers was most alike and then you can see why the luster is that certain result in that data which is the correct one. A graphical analysis can be used to explore the relationship between any two scientific variables by changing the numerical data of the experiment into a graph, which is a much more effective and easier way of interpreting the gathered results. It's easier to visualize a graph data than read all the tables with numbers.
The graph is in the attachment below and the 6 minerals also with their names, their density, and their hardness
A 2000 kg car moves at a speed of 30 m/s. To reach this speed, it was necessary to burn 0.1 l of gas. Burning gas provides 30 MJ/l of source energy. Determine the energy efficiency (in %) of this car.
Answers
The energy efficiency of the car is approximately 16.7%.
The energy efficiency of a car is the ratio of the useful work output (in this case, the kinetic energy of the car) to the total energy input (in this case, the energy released by burning the gasoline). The equation for energy efficiency is:
Efficiency = Useful work output / Total energy inputThe useful work output can be calculated as the kinetic energy of the car using the equation:
KE = 0.5mv²where m is the mass of the car and v is its velocity.
Substituting the given values:
KE = 0.5 x 2000 kg x (30 m/s)² = 900,000 JThe total energy input is the energy released by burning 0.1 L of gasoline, which is:
Total energy input = 0.1 L x 30 MJ/L = 3 MJ = 3,000,000 JSubstituting these values into the equation for efficiency:
Efficiency = (900,000 J / 3,000,000 J) x 100% = 0.3 x 100% = 16.7%Therefore, the energy efficiency of the car is approximately 16.7%.
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please help !!!!!!!!!!
Answers
Answer:
Lighthouse 1 during the day will be warmer, lighthouse 2 during the night will be warmer.
Explanation:
As the paragraph stated land absorbs heat and heats up faster than water. So during the day the lighthouse farthest away from the water will be hotter. But then the converse is true also land losses heat faster than water at night. So the water retains the heat from the day better making the lighthouse by the water warmer at night.
Does anybody know how to solve this? Thanks!!
The position x of a bowling ball rolling on a smooth floor as a function of time t is given by: x(t)=v0t+x0 , where v0=2.5m/s and x0=−5.0m . The polynomial relationship between position and time for the bowling ball is _______________.
exponential
inverse
linear
cubic
quadratic
Answers
The polynomial relationship between position and time for the bowling ball is linear.
What is a linear relationship between two variables?A linear relationship between two variables is a term used to describe a straight-line relationship between the two variables.
Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b.
From the equation of linear relationship between two variable, the highest power of x is one.
The given equation for position and time;
x(t) = vot + xo
From this given equation, the highest power of t is one, hence it is called linear relationship.
Thus, the polynomial relationship between position and time for the bowling ball is linear.
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Which statement describes the factors that affect the force of friction? Question 2 options: Friction is always the same no matter what Friction increases as the normal force (weight) increases, and also depends on the surface Friction is greater when objects are barely touching Friction is greater on slippery surfaces
Answers
Answer:
(b) Friction increases as the normal force (weight) increases, and also depends on the surface
Explanation:
The coefficient of friction relates the normal force between surfaces to the friction force opposing motion. The coefficient depends on the surface.
The appropriate choice is ...
Friction increases as the normal force (weight) increases, and also depends on the surface
Which landscape feature can be caused by chemical
weathering?
OU-shaped valley
O Basalt columns
O Limestone caves
Answers
Answer: Limestone Caves
Explanation: The most common feature that can be caused purely by chemical weathering is Karst Landscape, which can lead to caverns and sinkholes.
A 15 kg box is pushed with a force of 35 N in the +x direction, and the box accelerates to the right. It does not accelerate up or down
Answers
The box accelerates to the right due to the applied force of 35 N in the +x direction.
Newton's second law states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. In this case, the net force acting on the box is 35 N in the +x direction, and its mass is 15 kg. Therefore, we can calculate the acceleration using the formula:
acceleration = net force / mass
acceleration = 35 N / 15 kg = 2.33 m/s² (rounded to two decimal places)
Since the box is not accelerating up or down, we can conclude that the force applied is only causing the box to accelerate in the horizontal direction.
Other forces such as gravity and friction are not considered in this scenario. Thus, the 15 kg box will experience an acceleration of approximately 2.33 m/s² in the +x direction due to the applied force of 35 N.
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