In an experiment to find the specific heat capacity of a metal, it is found that 5200 J is needed to raise the temperature of a 2kg block by 20 °C

What value for the specific heat capacity is given by these results?
A 130 J/(kg C)
B 520J/(kg C)
С 52 000 J/(kg°C)
D 104 000 J/(kg°C)

Answers

Answer 1

Answer:

A. 130J / kg°C

Explanation:

Amount of heat (Q) = 5200 J

mass (m) = 2 kg

temperature (dt) = 20°C

specific heat capacity (S) = ?

We know

Q = msdt

5200 = 2 * s * 20

s = 5200 / 40

s = 130 J /kg °C

Hope it will help :)


Related Questions

Why do comets only have tails when they are near the sun?.

Answers

When far from the sun, a comet is like a stone rolling around the universe. But when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and micro particles, electrons and ions.

A uniform electric field of 8 V/m exists between the plates of a parallel plate capacitor. How much work is required to move a 20 mC point charge from the negative plate to the positive plate if the plate separation is 0.050 m

Answers

Hello!

Recall the equation for the force experienced by a charged particle in an electric field:
\(F_E = qE\)

q = Charge of particle (20 mC)
E = Electric field strength (8 V/m)

We also know that 'Work' is equivalent to the following:
\(W = F \cdot d\)

W = Work (J)

F = Force (N)

d = distance (between the plates in this instance, 0.050 m)

If we substitute 'qE' for 'F':
\(W = qEd\)

Plug in the given values and solve.

\(W = (0.02)(8)(0.05) = \boxed{0.08 J}\)

**Since we are pushing a positive particle towards the positive plate, we are increasing its electric potential energy, so WE are doing positive work on the particle.

How much power is required to light a lightbulb at 100V of voltage when the lightbulb has a resistance of 500 Ohms?

Answers

Answer:

Power = 20 Watts

Explanation:

Given the following data;

Voltage = 100 V

Resistance = 500 Ohms

To find the power that is required to light a lightbulb;

Mathematically, power can be calculated using the formula;

\( Power = \frac {Voltage^{2}}{resistance} \)

Substituting into the formula, we have;

\( Power = \frac {100^{2}}{500} \)

\( Power = \frac {10000}{500} \)

Power = 20 Watts

help meeeeeeeeeeee
i need help on drawing a school gym for one of my classes

Answers

Answer:

a little to late

Explanation:

srry

An open container contained 150g of lead carbonate. After heating for 5 hours, the contents of the container were measured to have a mass of 98g.
How much mass was “lost” from the container? Where did it go?

Answers

Answer:

52 g was lost as carbon dioxide to the atmosphere

Explanation:

When lead carbonate is heated, it decomposes into two components:

1. Lead oxide

2. carbon dioxide

While the lead oxide remains a yellow solid in the heating container, the carbon dioxide escapes into the atmosphere as a gas. The equation of the reaction is as below:

\(PbCO_3_{(s)} --> PbO_{(s)} + CO_2_{(g)}\)

Hence, if a 150 g lead oxide is heated in a container and the final mass is 98 g, it means 52 g (150 - 98) of the total mass has been lost as carbon dioxide to the atmosphere.

The International Space Station is traveling 7800 m/s. Its orbit has a circumference of 44,460,000 meters. How many minutes will it take the space station to complete one orbit?

Answers

Answer:

Velocity = Distance

Time

Circumference is otherwise known as distance, thus V = C/T

Substitute the values and you get the answer.

T = C/V

T = 44460000

7800

T = 5700 seconds

please help me out i'm so depressed and such a failure
how does the brightness of the lamp (L) vary if we dispalce the cursor (C) of the rheostat
a)Towards A
b) Towards B

please help me out i'm so depressed and such a failurehow does the brightness of the lamp (L) vary if

Answers

Answer:

ok so first ur not a failure and its okay don't be so hard on ur self

<3

Help me please!!!!!!!!!!!!!!!!!!!!

Help me please!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

I think 100V but I'm not sure.

Earth pulls on the moon, and similarly the moon pulls on Earth. This is evidence that
O Earth and moon are simply pulling on each other.
O Earth's and moon's gravitational pulls comprise an action-reaction pair.
O both A and B
O neither A or B

Answers

This is evidence that Earth and moon are simply pulling on each other and Earth's and moon's gravitational pulls comprise an action-reaction pair.

The correct option is both A and B.

What causes the gravitational pull?

All objects with mass, including our Earth, really bend and curve spacetime, which is what causes gravity to pull you toward the ground. What you experience as gravity is that curvature.

What is an example of gravitational pull?

The cause of the Moon's orbital rotation around the Earth. The ocean's tides are controlled by the force of the Moon. the force that confines all gases to the Sun. The force that acts on us is what allows us to walk on the ground as opposed to floating in the air.

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Two thin circular discs of mass m and 4m having a radii of a and 2a are rigidly fixed by a massless rigid rod of length \(\ell =\sqrt{24}a\) through their centres. This assembly is laid on a firm and flat surface , and set rolling without slipping on the surface so that the angular speed about the axis of the rod is \(\omega \) , the angular momentum of the entire assembly about point O , is L ( see figure) .
Which of the following statement(s) is/are true ?

A) The magnitude of the z component of L is 55ma²\(\omega\)

B) The magnitude of the angular momentum of the assembly about its centre of mass is 17ma²\(\omega\)/2 .

C)The magnitude of angular momentum of centre of mass of the assembly about point O is 81ma²\(\omega\) .

D)The centre of mass of the assembly rotates about the z axis with an angular speed of \(\dfrac{\omega}{5}\) .​

Two thin circular discs of mass m and 4m having a radii of a and 2a are rigidly fixed by a massless rigid

Answers

Answer:

The correct answers are:

C)The magnitude of angular momentum of centre of mass of the assembly about point O is 81ma²w.

D)The centre of mass of the assembly rotates about the z axis with an angular speed of w/5 .​

Explanation:

Let the angle of axis with horizontal be θ.

cosθ = \(\frac{I}{\sqrt{l^{2} + a^{2} } } = \frac{\sqrt{24} }{5}\)

Velocity of point P (center of lower disk) aω=lΩ

Then Ω= \(\frac{aw}{1}\)

Angular velocity of C.M. w.r.t z axis =Ωcosθ

\(^{w}cm_{-z} = \frac{aw}{1} \frac{\sqrt{24} }{5} = \frac{w}{5}\)

\(L_{D} -cm \frac{ma^{2} }{2} w + \frac{4m(2a^{2}) }{2} w = \frac{17ma^{2}w }{2}\)

Thus the answer to your problem is, C and D.

The correct statements are:

A) The magnitude of the z component of L is 55ma².

B) The magnitude of the angular momentum of the assembly about its centre of mass is 17ma²/2.

What is Radii?

The plural of radius. It refers to the distance from the center of a circle or sphere to its edge. In other words, it is the length of a line segment that connects the center of a circle or sphere to any point on its circumference or surface, respectively.

The angular momentum of the assembly about point O is the sum of the angular momentum of each disc about point O. The discs are spinning about their own axes and are also revolving around point O. The z component of the angular momentum is given by Lz = Iω, where I is the moment of inertia of the disc about its own axis and ω is the angular velocity of the disc. The z component of the angular momentum of the smaller disc is (1/2)ma²(2ω), and that of the larger disc is (1/2)(4m)(2a)²(ω/2a) = 8ma²ω/4a = 2ma²ω. Therefore, the total z component of the angular momentum is 2ma²ω + (1/2)ma²(2ω) = 5ma²ω = 55ma², since ω = 11.

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A savings account is opened with an initial deposit of $425. 0. Determine the account balance after 9 years if the account earns 2. 7% simple interest annually. $3,928. 28 $1,457. 75 $528. 28 $103. 28.

Answers

After 9 years, the account balance would be $528.28. The result is obtained by adding the amount of interest to the initial deposit.

How to count the simple interest?

The simple interest of an amount of money can be counted by the following formula.

I = P × r × t

I = A - P

Where

I = simple interestP = principal amount (initial balance)r = simple interest ratet = time periodA = final balance

A savings account has the initial deposit of $425.00. It earns 2.7% simple interest per year. Find the final account balance after 9 years!

The amount of interest itself is

I = P × r × t

I = $425.00 × 2.7% per year × 9 years

I = $425.00 × 0.027 × 9

I = $103.28

The account balance after 9 years would be

I = A - P

$103.28 = A - $425.00

A = $425.00 + $103.28

A = $528.28

Hence, the final account balance after 9 years is $528.28.

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Experiment 1: Exploring Charge with Scotch® Tape

In this experiment, you will observe the behavior of charged objects using pieces of Scotch® tape.

Materials

Scotch® Tape

Ruler

*Pen

*Flat Work Surface

Procedure

Part 1

1. Use the ruler to measure a piece of tape that is 10 cm long.

2. Tear the tape to remove the 10 cm piece from the roll.

3. Create a "handle" on one side of the piece of tape by folding down the piece of tape 1 cm from the end, leaving a 9 cm sticky piece with a 1 cm handle.

4. Stick the entire sticky surface of the tape to a table top, counter top, or another flat surface.

5. Repeat Steps 1 – 4 with a second 10 cm piece of tape. Stick the second piece of tape at least 15 cm away from the first piece on the same surface.

6. Quickly pull off both strips of tape from the surface and ensure that the pieces do not touch.

7. Carefully bring the non-sticky sides of the tape together and record observations about the behavior of the pieces in Table 1.

8. Discard the tape.

Part 2

1. Use the ruler to measure a piece of tape that is 10 cm long.

2. Tear the tape to remove the 10 cm piece from the roll.

3. Create a "handle" on one side of the piece of tape by folding down 1 cm of tape from one end.

4. Stick the entire sticky surface of the tape to a table top, counter top, or another flat surface.

5. Use a pen and write "B1" on the tape. "B" stands for bottom.

6. Repeat Steps 1 – 4 with a second 10 cm piece of tape. This time, press the second strip of tape on top of the one labeled "B1".

7. Use the pen to label the top piece with a "T1". "T" stands for top.

8. Create a second pair of pieces of tape by repeating Steps 1 – 7. This time, label the bottom piece "B2" and the top piece "T2".

9. Use the T1 handle to quickly pull off T1 strip of tape from the flat surface.

10. Use the B1 handle to peel off the bottom strip from the flat surface. Keep both B1 and T1 pieces away from each other.

11. Bring the non-sticky sides of B1 and T1 together and record observations about the behavior of the pieces in Table 1.

12. Set the pieces of tape, non-sticky side down, on the table approximately 15 cm away from each other. Do not stick them back on the table!

13. Repeat Steps 9 - 12 for B2 and T2.

14. Carefully bring the non-sticky sides of piece "T1" and "B2". Record observations about the behavior of the pieces in Table 1.

15. Set them back down, non-sticky side down.

16. Repeat Steps 14 - 15 for "T1" and "T2". Record your observations in Table 1.

17. Repeat Steps 14 - 15 for "B1" and "B2". Record your observations in Table 1.

18. Repeat Steps 14 and 15 for "T1" and the hair on your leg or arm. Record your observations in Table 1.

19. Repeat Steps 14 and 15 for "B1" and the hair on your leg or arm. Record your observations in Table 1.

Table 1: Electric Charge Observations

procedure

interacting pieces observation

Part 1 Two pieces on table Part 2 T1 / B1 T2 / B2 T1 / B2 T2 / B1 B1 / B2 T1 / Arm Hair B1 / Arm Hair ***The observation is filled.

Post-Lab Questions

1. Describe the interaction between the top and bottom strips as they relate to electric charge. Did the behavior of the pieces change when the tape was from different sets?

2. Describe the interaction between two top and two bottom pieces of tape as they relate to electric charge. Is this consistent with the existence of only two types of charge? Use your results to support your answer.

3. Did the top tape attract your arm hair? Did the bottom tape attract your arm hair? Usually arm hair is neutral; it has equal number positive and negative charges. Use this information to explain your results.

4. Which pieces of tape are positively charged? Which pieces of tape are negatively charged? Explain your reasoning.

5. Use your data to create a rule describing how like charges, opposite charges, and neutral bodies interact.

6. What do you observe about the force of attraction or repulsion when the pieces of tape are closer together and farther apart? Does this change happen gradually or quickly?

Answers

1.When the non-sticky sides of the two pieces of tape recording are brought together, they repel each other. This is due to the buildup of electric charge on the  face of the tape recording when it was  hulled off from the flat  face.

2.The pieces didn't change when the tape recording was from different sets.  When two top or two  nethermost pieces of tape recording are brought together, they repel each other.

3.When a top and  nethermost piece of tape recording are brought together, they attract each other. This is  harmonious with the actuality of only two types of charge, positive and negative. The results support the fact that the top and  nethermost pieces of tape recording had  contrary charges.  The top tape recording attracted the arm hair, while the bottom tape recording didn't attract the arm hair. Arm hair is  generally neutral, but it can be  concentrated by the electric field of the charged tape recording.

4.The top tape recording is negatively charged, and it  concentrated the arm hair, which has a positive charge. This redounded in  magnet between the top tape recording and the arm hair.  The pieces of tape recording labeled" T1" and" B2" are  appreciatively charged, while the pieces of tape recording labeled" B1" and" T2" are negatively charged. This can be determined from the  compliances.

5.When the  appreciatively charged tape recording was brought  near to a negatively charged tape recording, they attracted each other. When two  appreciatively charged  videotapes or two negatively charged  videotapes were brought  near together, they repelled each other.  Like charges repel each other,  contrary charges attract each other, and neutral bodies aren't affected by electric fields.  

6.The force of  magnet or aversion between the pieces of tape recording increases as they get  near together and decreases as they move  further  piecemeal. This change happens gradationally, not  snappily.      

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An object is dropped from 20. meters above the moon. The acceleration due to gravity on the moon is 1.62 m/s^2
a. How long does it take for the object to impact the moon?
b. At what speed does it impact the moon?

Answers

Answer:

a. Approximately  3.21 seconds

b. Approximately  5.196 m/s

Explanation:

a. The height from which the object is dropped = 20 meters

The location of the occurrence = The moon

The acceleration due to gravity on the moon  = 1.62 m/s²

The time it took the object to to impact the moon is given by the equation of free fall as follows;

h = 1/2·a·t²

Where;

h =The height from which the object is allowed to freely fall = 20 meters

a = The acceleration due to gravity on the moon  = 1.62 m/s²

t = The time of motion of the object

Substituting the values, gives;

20 = 1/2 × 1.62 × t²

t² = 20/(1.2 × 1.62) ≈ 10.23 s²

t = √ 10.23 ≈ 3.21 s

The time in motion of the object before impact, t = 3.21 seconds

b. The final speed, v is given from the equation for speed under free fall, which is presented as follows;

v = u + a·t

Where

u = The initial vertical velocity = 0

Substituting the values gives;

v = 0 + 1.62 × 3.21 ≈ 5.196 m/s

The final speed, v with which the object impacts the moon ≈ 5.196 m/s

Which law or theory states that the force of attraction or repulsion between electric
charges is inversely proportional to the square of the distance between them?
a. Coulomb's law
b. Newton's law of universal gravitation
c. Newton's third law of motion
d. Einstein's theory of relativity

Answers

Answer:

A

Explanation:

Coulomb's Law: A physical law that states the electric force between two point charges is proportional to the product of the charges and inversely proportional to the square of the distance between them.

The strength of an electromagnet's magnetic field can be increased by which of the following? Multiple answers are correct. Select all that apply.

A. Increasing the amount of current flowing through the wire

B. Increasing the number of coils packed close together

C. The addition of a quartz core

D. Increasing the thickness of the coils

Answers

The strength of an electromagnet's magnetic field can be increased by the following below:

A. Increasing the amount of current flowing through the wire

B. Increasing the number of coils packed close together

D. Increasing the thickness of the coils.

What is a Magnetic field?

This is referred to as a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Increasing the number of coils packed close together or the thickness will increase the strength of an electromagnet's magnetic field because each coil has its own magnetic field, so the more coils will increase it thereby making it the correct choices.

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A sportscar has a mass of 1500 kg and accelerates at 5 meters per second squared. What is the magnitude of the force acting on the sportscar?

Answers

Answer:

7500 Newtons

Explanation:

Mass of the sportscar= 1500 kg

Acceleration of the sportscar= 5m/s^2

Hence, let the Force acting on it be F

\(We\ know\ that,\\Force=Mass*Acceleration\\F=ma\\\\Here,\\F=1500*5\\=7500 kg m/s^2\ or\ 7500\ Newtons\)

the inside surfaces of the glass inside thermos bottles are coated with aluminum to prevent energy transfers by

Answers

Answer:

radiation heat.

Explanation:

That is any heat that passes through the air, like the sun.

Answer:

radiation

Explanation: I’m sure

pls mark as brainliest if possible

Which of the following sentences shows the correct use of a transition word? Even though I was sick, I went to the doctor. My shoes were new. Likewise, my brother’s shoes were old. It was raining in the morning. Consequently, it was snowing in the afternoon. I stayed up late for several nights. Eventually, I was too tired to concentrate.]

Answers

Answer:

d

Explanation:

on edge

The sentence that shows the correct use of a transition word is I stayed up late for several nights. Eventually, I was too tired to concentrate. The correct option is D.

What are transition words?

Transitional words include the words "and," "but," "so," and "because." They demonstrate to your reader the connections between words, and sentences.

Utilize these transitions wisely by making sure the word or phrase you choose adheres to the logic of the connection or relationship you are emphasizing.

Before utilizing a certain transitional word in your paper, make sure you fully understand its meaning and usage and that it is the correct match for the logic of your thesis. All of these words and phrases have various meanings, nuances, and connotations.

Therefore, the correct option is D, I stayed up late for several nights. Eventually, I was too tired to concentrate

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Imagine that a star-forming cloud collapses but retains all of its mass in a single blob. In order to conserve angular momentum, the cloud must?.

Answers

In order to conserve angular momentum, the cloud must spin faster (if the distance of the mass from the center of the cloud decreases, the rate of spin must increase to compensate).

Why and how do planets rotate?Huge cosmic gas and dust clouds collide to generate stars and planets. These clouds orbit in the overall gravity of the galaxy, and both the material inside them and the clouds themselves are constantly in motion. The cloud will most likely have a minor rotation as observed from a location close to its center as a result of this movement. Angular momentum, a measure of its motion that cannot change, can be used to characterize this rotation. Ice skaters spin faster as they pull their arms in, which is due to the conservation of angular momentum. She moves faster while maintaining the same angular momentum as her arms go nearer to her axis of rotation.

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What is the SI unit of measurement for speed? A.meters per second (m/s) B.meters per second (m/s) C.Miles per hour (mi/hr) D.Miles per hour (mi/hr) Kilometers per minute (km/min) Kilometers per minute (km/min) Grams per unit (g/u) Grams per unit (g/u)

Answers

Explanation:

The SI unit of measurement for speed is metres per second (m/s) .

Speed : The distance travelled by a body per unit time is know as speed.

Hope it will help.

As you grow and learn, your neurons continue to connect, making you better at the
things you do.

False
True

Answers

True. When you learn something new neurons make connections and retain that knowledge. That means the more you learn a skill the more connections you make and the more muscle memory you get from doing that skill. Thus you get better at that skill.

Answer:

true

Explanation:

if the current in the wire were to be increased by a factor of 4, how would the strength of the magnetic on the loop change?

Answers

If the wire's current were to have been increased by a ratio of 4, the magnetic loop change's strength would increase by 2mA.

What is sustainability in a loop?

Loop is a multistakeholder collaboration of producers, merchants, and consumers that enables a globally reuse platform with the goal of Eliminating a Idea of Waste®. Observe Loop. A Global Ecosystem for Reuse.

Are loop earplugs truly effective?

Standard polyurethane or wax ear plugs muffle noises by reducing volume by ten to thirty decibels (dB). In contrast, Loop Experience earplugs replicate how the ear works. They lower the intensity by 18 dB, yet the residual sound still sounds normal. Their Quiet buds provide a 27 dB reduction which is more typical.

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Question 1
What are the parts of Earth's mantle?
-Inner core, asthenosphere, lithosphere
-Lithosphere, asthenosphere, mesosphere
-Crust, lithosphere, asthenosphere
-Mesosphere, asthenosphere, troposphere

Question 2
Two students below described a type of Earth's outermost layer:
Student A: 5–12 kilometers deep
Student B: Makes up the sea floor
Which type of outermost layer did the students describe?
-They both described the oceanic type.
-They both described the continental type.
-Student A described the oceanic type and Student B described the continental type.
-Student A described the continental type and Student B described the oceanic type.

Question 3
If Earth was like a hardboiled egg, which part of Earth would the egg shell represent and why?
-Crust, as its depth is up to 3,000 kilometers
-Mantle, as its depth is up to 3,000 kilometers
-Mantle, as its depth is less than 100 kilometers
-Crust, as its depth is less than 100 kilometers

Question 4
What forces the inner core of Earth to remain solid?
-Lack of water
-Low temperature
-Low density
-High pressure

Answers

Answer:

1.- the lithosphere, asthenosphere, and mesosphere.

2.- They both described the oceanic type.

3.- Crust, as its depth is less than 100 kilometers

4.- High pressure

☺️

Calculate magnetic field strength current 3a flows in wire 2.5m and produces a force 15n

Answers

The magnetic field strength willl be 2 T. A force known as the Lorentz force acts on the charge when it is subject to an electric and magnetic field.

What is Lorentz force?

Lorentz force is defined as the force acting on point charge when it is moving in an electric and magnetic field.

The given data in the problem is ;

B is the magnetic field strength =? T.

Current, I =?

L is the length of the wire

The magnetic force is found as;

F= BIL

15 N  = B × 3 A ×  2.5 m

B = 2 T

Hence, the magnetic field strength willl be 2 T.

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Provide three reasons for a leftward shift of the LM curve. Provide two reasons for a steep IS curve.

Answers

a. The shift of the LM curve to the left occurs due to a decrease in the money supply or an increase in the demand for money.

b. Two reasons for a steep IS curve are High Investment Demand and Inflexibility in Investment.

The LM curve shows the various combinations of interest rates and income that bring about the equality of the supply and demand for money.

Below are three reasons for the leftward shift of the LM curve:

1. Decrease in Money Supply: The leftward shift of the LM curve can occur if the money supply decreases. This causes the interest rates to rise because the demand for money is greater than the supply.

2. Increase in Money Demand: An increase in the demand for money can lead to a leftward shift of the LM curve. This happens when people want to hold more money than is available in the economy, and the interest rate rises as a result.

3. Increase in Prices: An increase in prices causes a leftward shift of the LM curve. This is because, at higher prices, people need more money to conduct their transactions, and an increase in the money supply is required to keep the interest rate constant.

Now, moving on to the steep IS curve:

1. High Investment Demand: A steep IS curve may occur if there is high investment demand. This happens when businesses are optimistic about the future and invest more, causing the demand for credit to increase and the interest rates to rise.

2. Inflexibility in Investment: A steep IS curve can also be caused by inflexibility in investment. This occurs when businesses are unwilling to change their level of investment due to economic conditions, and any changes in the interest rates have a significant effect on investment and output levels.

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Melody is riding her mountain bike along a trail with multiple hills. At the bottom of the second hill, she has 3200 J of kinetic energy. At the top of the third hill, when she is going the slowest, her potential energy measures 1650 J. Which statement below is true? A. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy from the environment is gained. B. The total amount of energy at the top is equal to the amount at the bottowm, but she gained some energy as she traveled due to a higher speed going down the first two hills. C. The total amount of energy at the bottom of the hill cannot be equal to the amount at the top, because some of the energy is lost.

Answers

Answer:

Eventually it reaches bottom of hill so C

Explanation:

What do these two changes have in common? your breath becoming visible on a cold day building a tower out of magnetic blocks

Answers

The cold is what they have in common

Determine the stopping location of the prize wheel. At this moment it is centered on the number 5. It is spinning with an energy of 6.19 J. It is slowing at a rate of 1.800 rad/s/s.

The disk is made from a wood with a density of 478.0 kg/m^3. The disk is 29.0 mm thick and has a radius of 33.0 cm.

Predict the angular displacement it will go through and predict the number on which the wheel will stop. To be safe, you will also get one number the right and to the left of the number you chose.

The wheel will spin clockwise. The wheel goes from 1 to 36.

Answers

Answer:

Thanks for the 50 points. Answer eill be always 29.0m

True of False, in physics the term weight and force of gravity have the
same meaning?"
Help with both questions please.

True of False, in physics the term weight and force of gravity have thesame meaning?"Help with both questions

Answers

Answer:

1) True

2) None of the above

Explanation:

Q # 1:

Weight is actually the gravitational force or force of gravity. So, it's true.

Q # 2:

None of above because force of gravity can not be negative. In order to have a negative weight, the body has to be "repelled" by gravity.

\(\rule[225]{225}{2}\)

Hope this helped!

~AH1807
first one is true and none of the above for the second one

describe how electromagnetic radiation can ionise an atom. 2 marks

Answers

Answer:

Ionizing radiation is radiation with enough energy so that during an interaction with an atom, it can remove tightly bound electrons from the orbit of an atom, causing the atom to become charged or ionized. ... Forms of electromagnetic radiation.

(from google)

thank you :)

Ionizing radiation is radiation with enough energy that to remove tightly bound electrons from the orbit of an atom, causing that atom to become charged or ionized.

What is ionizing radiation?

The process in which an electron is given enough energy to break away from an atom is called ionization.

This process results in the formation of two charged particles or ions:

The molecule with a net positive chargeThe free electron with a negative charge.

Each ionization releases energy that is absorbed by material surrounding the ionized atom.

Ionizing radiation deposits a large amount of energy into a small area. In fact, the energy from one ionization is more than enough energy to disrupt the chemical bond between two carbon atoms.

There are three main kinds of ionizing radiation:

alpha particles, which include two protons and two neutrons

beta particles, which are essentially electrons

Therefore,

According to the definition of ionizing radiation,

Ionizing radiation can remove electrons from the atoms, i.e. It can ionize atoms.

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