A crankshaft of an engine increases its spin from 1,000 rpm to 1,500 rpm in 0.5 s. What is its angular acceleration? (1 rev=2π rad)

600 rad/s2

100 rad/s2

500 rad/s2

60 rad/s2

Answers

Answer 1

the answer is 100 rad/s2


Related Questions

What torque will increase angular velocity of a solid cylinder of mass 16 kg and diameter 1 m from zero to 120 rpm in 8 s?
a)π/4Nm
b)π/2Nm
c)π/3Nm
d)πNm​

Answers

This is what I found online! Hope it helps:)

A black disk rotates with constant speed and a coin that is located on the edge of the disk moves with speed v. If on a white disk that also rotates with constant speed, we place the same coin on the edge, it is moving with speed 4v. Which disk has a larger radius?

Answers

The white disk has a larger radius.

We know that the speed of the coin v = rω where r = radius of the disk and ω = angular speed of the disk.

Now, since both disks rotate at constant speed, ω = constant.

So, v ∝ r

For the black disk, its radius is r, the coins speed is v.

For the white disk, let its radius be R, the coins rotates at a speed V = 4v

We know that v ∝ r.

Since the coin on the white disk has a greater speed, so its radius would be greater.

So, the white disk has a larger radius.

Learn more about radius of a disk here:

https://brainly.com/question/24712423

Do we grow taller when we hang on a branch for 1 min?

Answers

Answer:

Temporarily yes, if you are speaking of a skeletally mature person, taking pressure off of joints will allow them to absorb more fluid and thus be a larger diameter. If that expansion is in a vertical direction then you would in fact be taller until the fluid was returned to outside of the joint.

The person above is 100% correct lol

a cork floating in a beaker of water is attached to a spring, and the spring is attached to the bottom of the beaker. the spring pulls the cork farther below the water than it would be if it were just floating. what happens when we drop the beaker off a tall building?

Answers

Answer:

If we drop the beaker, due to inertia, the Cork will move upwards.

Option B is correct.

Explanation:

When we drop the beaker off a tall building, the cork attached to the spring moves in an upward direction.

What is spring force?

Spring can be defined as a tool used for many purposes and its inertia is neglected by considering it is massless.  When a spring is strained, undergoes displacement when it is compacted spring gets compressed but it can freely come to its equilibrium position.

Spring exerts an equal and an opposite force on a body that stretches or compresses it.

The Spring force formula can be written as:

F = k(x – x₀)

Where the spring force is F, xo is the equilibrium position, x is the displacement of the spring from the equilibrium position and the spring constant is k.

The negative sign shows that the spring force is a restoring force that acts in the opposite direction.

Therefore, the cork attached to the spring moves up when we drop the beaker off a tall building.

Learn more about spring force, here:

https://brainly.com/question/14655680

#SPJ2

What makes rusting a redox reaction?

A. It is an example of combustion, which is a redox reaction.

B. Electrons are transferred from oxygen atoms to iron atoms.

C. Any reaction involving oxygen is a redox reaction.

D. Electrons are transferred from iron atoms to oxygen atoms.


(No links please)​

Answers

Electrons are transferred from oxygen atoms to iron atoms is a redox reaction. Option B is correct.

What is a redox reaction?

A redox reaction is a type of chemical reaction in which two species exchange electrons.

Any chemical process in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron is known as an oxidation-reduction reaction.

A redox reaction can result in the creation of hydrogen fluoride. The creation of hydrogen fluoride is another example of a redox reaction.

We can evaluate the oxidation and reduction of reactants by breaking down the process. Each hydrogen turns positive after being oxidized and losing two electrons.

Electrons are transferred from oxygen atoms to iron atoms is a redox reaction.

Hence, the option B is correct.

To learn more about the redox reaction, refer to the blink;

https://brainly.com/question/13293425

#SPJ2

Answer: D) Electrons are transferred from iron atoms to oxygen atoms


If anyone else needs it

Explanation: the iron is increasing in oxidation number (losing electrons) and oxygen is decreasing in oxidation number (gaining electrons). This tells us that we have oxidation (or rusting) taking place.

a runner joys 12km north than turs and runs 16km east in three hours.
a. what is his displacement
b. calculate his average speed
c. calculate his average including the direction ​

Answers

Explanation:

a.displacement is vector quantity there fore

we combine the two direction

[tex] {c}^{2} = \sqrt{ {a}^{2} + {b}^{2} } [/tex]

[tex] {c}^{2 } = \sqrt{ {12}^{2} + {16}^{2} } [/tex]

[tex] {c}^{2} = \sqrt{400 } [/tex]

[tex]c = 20[/tex]

displacement is 20km to wards north

b:average speed

[tex]v = s \div t[/tex]

20/3=6.67

c: please type correctly

a force acting on 25kg mass produces an acceleration of 4m/square what would this the same force produce on a 12kg mass​

Answers

Answer:8.3m/s

Explanation:

from F=ma, f=25*4=100N. since the force is 100, 100=12a. acceleration= 8.3m/s

John carries a 5 kg bag horizontally to the checkout line. How much work must he
do to move it 8 m at a constant velocity of 1 m/s to the right?

Answers

The work John must do to move the bad horizontally to given distance is 2.5 J.

The given parameters;

mass of the  bag, m = 5 kgdistance moved by the bad, d = 8 mvelocity of bag, v = 1 m/s

The acceleration of the bag at the given distance and velocity is calculated as follows;

[tex]v^2 = u^2 + 2as\\\\1^2 = 0 + 2(a)(8)\\\\1 = 16 a\\\\a = \frac{1}{16} \\\\a = 0.0625 \ m/s^2[/tex]

The work done in moving the bag to 8m is calculated as follows;

[tex]W = F \times d\\\\W = ma \times d\\\\W = 5 \times 0.0625 \times 8 \\\\W = 2.5 \ J[/tex]

Thus, the work John must do to move the bad horizontally to given distance is 2.5 J.

Learn more here:https://brainly.com/question/19498865

Which phrase is best described as the energy of motion?

Answers

Answer:

The energy of motion is known as kinetic energy.

Explanation:

Which of the following substances cannot be broken down into simpler substances?
Table Salt (NaCl)
Water (Hsub2O)

Sand (SiOsub2)
Potassium (K)

Answers

Potassium because it is an element and not a compound

What is the total amount of potential and kinetic energy in a system? *
1 point
A: Electrical energy
B: Heat energy
C: Mechanical energy
D: Nuclear energy

Answers

Answer:

C. Mechanical Energy

Explanation:

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy.

1 point
What is the potential energy of a 12543 kg tank this on the ground? (only
put the number, no units or commas) *

Answers

Answer:

PE=0

Explanation:

If the tank is on the ground, there is 0 height which means the equation of PE=mh will be PE=12543(0)=0, hope this helps!

Plzzzz help meeeeeeee

Answers

Answer:

15m²

8.6m²

lcm²

6000cm²

0.1km²

40cm²

5210 mm²

500m²

0.0087mm²

500cm²

your field of study in college is called your________.

Answers

Answer:

Majors are also called concentrations. An academic major or concentration is a college or university student's main field of specialization during his or her associates or undergraduate studies which would be in addition to, and may incorporate portions of, a core curriculum.

A 2.3 kg ball has 76 J of kinetic energy. How fast is it moving? Show all work and use correct units of measurement for the answer to get full credit.

Answers

Answer:

8.13 m/s

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass in kg

v is the velocity in m/s

To find the velocity we make v the subject of the equation

That's

[tex]v = \sqrt{ \frac{2k}{m} } \\ [/tex]

From the question

k = 76 J

m = 2.3 kg

We have

[tex]v = \sqrt{ \frac{2 \times 76}{2.3} } = \sqrt{ \frac{152}{2.3} } \\ = 8.129388...[/tex]

We have the final answer as

8.13 m/s

Hope this helps you

A stone is dropped off a tall building. It takes 4.5 s to hit the ground Determine the height of the building. ​

Answers

Explanation:

time =4.5sec

gravity =9.8m/s square

so to determime the height we can use the formula

1/2 of gravity times time square

which results in 99.25

Please find attached photograph for your answer.

Hope it helps.

Do comment if you have any query.

A 0.60 kg mass is moving horizontally with a speed of 7.0 m/s when it strikes a vertical wall. The mass rebounds with a speed of 4.20 m/s. What is the magnitude of the change in linear momentum of the mass

Answers

Answer:  The magnitude of the ball's momentum change is  

      Δp=m∣ν  

i

−ν  

f

∣=(0.70kg)∣(5.0m/s)−(−2.0m/s)∣=4.9kg⋅m/s.

Explanation:

What substance is a polymer found in nature?

Answers

Silk,wool, DNA, cellulose and protein

ASAP will mark brainlyist

A truck is speeding up (with a constant acceleration) from rest to 45 m/s and it takes it 15 seconds to do so. How far will the car travel?

Answers

Answer:

[tex]315meters[/tex]

Explanation:

Solution is attached.

A tellurium-sapphire laser can produce light at wavelength of 800 nm in ultrashort pulses that last only 4.00x10-15s (4.00 femtoseconds, or 4.00 fs). The energy in a single pulse produced by one such laser is 2.00 μJ = 2.00x10-6 J, and the pulses propagate in the positive x-direction. Find a) the frequency of the light; b) the energy and minimum energy uncertainty of a single photon in the pulse

Answers

The speed of light and the propagation of errors allows to find the results on the questions of the radiation emitted by the laser are:

    a) The frequency is: f = 3.7 10¹⁴ Hz

    b) The energy with its uncertainty is: E = (2.465 ± 0.004) 10⁻¹⁹ J

a) The speed of a wave is related to its wavelength and frequency.

           c = λ f

           [tex]f = \frac{c}{\lambda}[/tex]

Where c is the speed of light, λ the wavelength and f the frequency.

They indicate that the wavelength is λ = 800 nm = 800 10⁻⁹ m, the speed of light is a constant c = 2.99 10⁸ m/s.

         f = [tex]\frac{2.99 \ 10^8}{800 \ 10^{-9}}[/tex]  

         F = 3.7 10¹⁴ Hz

b) Planck's equation states that the energy is proportional to the frequency of the radiation.

         E = h f

Where E is the energy, h the Planck constant and f the frequency.

         E = 6.63 10⁻³⁴  3.7 10¹⁴

         E = 2.46467 10⁻¹⁹ J

The uncertainty or error is the fluctuation that a magnitude may have due to the precision in the measurements, when the magnitude is calculated by some formula, the propagation of these uncertainties must be carried out.

         

        Δm = ∑   [tex]\sum \frac{dm}{dx_i} | \Delta x_I|[/tex]  

the expression for energy is:

        E = [tex]\frac{hc}{\lambda }[/tex]  

        [tex]\Delta E = \frac{dE}{d \lambda} |D\lambda |[/tex]  

        [tex]\Delta E = \frac{h c }{\lambda^2 } |\Delta \lambda |[/tex]

When the error in the measured magnitude is not explicitly indicated, we assume that the error is in the last digit written, therefore

         Δλ = ± 1 nm = ± 1 10⁻⁹ m

We calculate.

        [tex]\Delta E = \frac{6.63 \ 10^{-34} \ 2.99 \ 10^8 }{(800 \ 10^{-9})^2} 1 \ 10^{-9}[/tex]  

        ΔE = 3.1 10⁻²² J

the error is given with a significant figure.

        ΔE = 3 10⁻²² J = 0.004 10⁻¹⁹ J

The result of the energy is:

        E = (2.465 ± 0.004) 10⁻¹⁹ J

In conclusion, using the speed of light and the propagation of errors, we can find the results on the questions of the radiation emitted by the laser are:

    a) The frequency is; f = 3.7 1014 Hz

    b) The energy with its uncertainty is: E = (2.465 ± 0.004) 10⁻¹⁹ J

Learn more here:  brainly.com/question/15557220

A car accelerates from rest to 40 m/s. Later, on a highway it accelerates from 40 m/s to 80 m/s. Which takes more energy, going from 0 to 40, or from 40 to 80

Answers

Answer:

40 to 80

Explanation:

A car's kinetic energy changes with the speed.  Cars going slower have less potential energy than cars going faster.

A 60 kg gorilla named Anthony Falcon is standing on his skateboard. This is on planet Erf,

where a = g = -10m/s2

If Anthony Falcon has a weight of 600 N, with what amount of force is their body pushing

down on the skateboard with?

Answers

F= ma
F= (600/-10) -10
F= 580n

At least I think that’s the answer

You exert a force of 200 N on a lever over a distance of 4.6 m. You ultimately lift an 11 kg load 2.3 m off the ground. What is the efficiency of this lever?

Answers

Answer:

56142e3456834567856783446357

Explanation:

4535x346326432x5636432784372=3853785

When an electron falls from one energy level to a lower energy level, the result is the emission of:

Answers

Answer:

fsdfbfsdhfsfiic,dsiwe

Explanation:

. The gas in a piston (defined as the system) warms and absorbs 655 J of heat. The expansion performs 344 J of work on the surroundings. What is the change in internal energy for the system

Answers

The change in the internal energy for the system is 311 J

The change in internal energy for the system will be the difference between the heat absorbed and the work expansion from the surroundings.

i.e.

ΔU = Q + W

where;

internal energy = Uheat absorbed = Qworkdone on surroundings = -W

ΔU = ( 655 J + ( - 344 J) )

ΔU = 311 J

Learn more about change in internal energy for the system here:

https://brainly.com/question/20920764?referrer=searchResults

the second law of thermodynamics imposes what limit on the efficiency of a heat engine?

Answers

A heat engine cannot have a thermal efficiency of 100% For all reversible processes, the second-law efficiency is 100%. The second-law efficiency of a heat engine cannot be greater than its thermal efficiency. The second-law efficiency of a process is 100% if no entropy is generated during that process

A student jumps off a sled toward the west after it stops at the bottom of an icy hill.

Based on the law of action-reaction, in what direction will the sled most likely move as the student jumps off?

Answers

Answer:

Explanation:

That’s dangerous who would do that.

Me

as shown in the figure, a 10-kg block on a perfectly smooth horizontal table is connected by a horizontal string to a 63-kg block that is hanging over the edge of the table. what is the magnitude of the acceleration of the 10-kg block when the other block is gently released?

Answers

Newton's second law allows to find the acceleration of the two-body system, where a mass is hanging is:

The acceleration of the system is: a = 8.46 m / s²

Newton's second law states that the net force on a body is equal to the product of the mass and the acceleration.

         ∑ F = m a

Where the bold letters indicate vectors, F is the force, m the mass and the acceleration of the body.

A free body diagram is that diagram of the system where the forces are shown without the details of the bodies. In the attachment we have a free-body diagram of the system.

Let's write Newton's second law for each axis.

x- axis

        T = m₁ a

y-axis

body in the horizontal part

        N-W₁ = 0

       N = W₁

Body hanging.  

         W₂ - T = m₂ a

Wwhere the positive direction is down, let's write our system of equations.

         

                T = m₁ a  

         W₂-T = m₂ a

Let's Resolve.

          m₂ g = (m₁ + m₂) a

          a = [tex]\frac{m_2}{m_1+m_2} \ g[/tex]  

Let's calculate.

         a =[tex]\frac{63}{10+63} \ 9.8[/tex]  

         a = 8.46 m / s²

In conclusion using Newton's second law we can find the acceleration of the two-body system, where a mass is hanging is:

The acceleration of the system is: a = 8.46 m / s²

Learn more about Newton's second law here:  brainly.com/question/13959891

When a wave is transmitted from one substance to another, its ______ will change. Unless it reaches the second substance at a right
angle, its direction will also change. What one word completes the
sentence?

Answers

Answer:

When a wave is transmitted from one substance to another, its REFRACTION will change. Unless it reaches the second substance at a right angle, its direction will also change.

When a wave is transmitted from one substance to another, its refraction will change. Unless it reaches the second substance at a right angle, its direction will also change.

What is Refraction?

Refraction is the redirection of a wave as it passes from one medium to another medium. The redirection of wave can be caused by the wave's change in speed or by a change in the medium of wave.

The refraction of light or change in the direction of path of light in other medium occurs because the light wave travels with different speeds in different media. When a ray of light passes from one medium to another medium, the direction of the wave changes except for zero degrees because of the change in its speed.

Learn more about Refraction here:

https://brainly.com/question/13088981

#SPJ1

What is the acceleration of a 20 kg backpack lifted with a force of 15 N?

a. 0.75 m/s2
b. 1.33 m/s2
c. 300 m/s2
d. 5 m/s2

Answers

The answer is option A. 0.75 m/s^2

the formula needed to solve this is acceleration = force/mass

we know the following:

mass of the backpack = 20KG

the force is 15N

therefor- acceleration = 15/20

which can also be written as 3/4, leaving us with the final answer of .75 m/s^2

Answer:

0.75 m/s2

Explanation:

0.75 m/s2

Other Questions
pls help with 4 4/7 -see attached pic Brainliest if correct 4.1 Sequoyah Convention (25 points) Which U.S. President said Oklahoma's Constitution was legal?A. William Henry HarrisonB. William FallC. William McKinleyD. Theodore Roosevelt 1) Consider the image seen here. The image, at point Y, represents the process ofesA) hydrolysis; lipidB) hydrolysis; saturated fatdehydration synthesis, lipidD) dehydration synthesis, protein what are two examples of a direct to consumer marketing channel? Find the perimeter. Simplify your answer. b) Complete the table to show the total amount of calories Mary will burn forcycling and running for 0, 10, 15, and 30 minutes. Show and explain your work.Minutes (m)Total Calories Burned (C)010 Please help i attached a link below to the graph Write the linear inequality shown in the graph. The gray area represents the shaded region.y x 4y x + 4y x 4y x + 4 Robert has 4 times as many pennies as he does nickels. If Robert has $1.44 worth of pennies and nickels, how many nickels does he have? Which number has a 5 in it thats 10 times the 5 in 13.725 You make a scale drawing of a garden plot using the scale 2 in. 517 ft. If the length of a row of vegetables on the drawing is 3 in., how long is the actual row?a. 17 ft b. 25.5 ft c. 34 ft d. 42.5 ft Help please tell me how to do this I don't know. ..... She is beautiful,she is not intelligent. "Jim's brand new sports car skidded to a stop in the driveway"In the quote above,which words represent a noun phrase? nico wanted to determine the number of students in his school who buy school lunch. he walked around the cafeteria one lunch period looking to see whether every fifth person in the cafeteria purchased lunch or brought their own. which method did he use to collect his data? survey simulation experiment observational study When a person begins to walk, the neurons in the ______ stimulate the appropriate muscles to produce the pattern and rhythm of arm and leg movements associated with walking. Predict how the absence of phytoplankton in the coral reef could affect the entire community As the amplitude decreases in a wave the energy increasesTrue or false The symbol delta x (x) is used to find what value? five friends get together to have a thanksgiving dinner. roger, ted, tom, pam, and donna brought (in no particular order) turkey, salad, dressing, peas, and potatoes. each item was brought on a different colored plate (no particular order) white, purple, black, green, and pink. - no food begins with the same letter as the name of the person who brought it- the dressing was not brought by tom or pam- the person who brought the potatoes and the person who brought the green plate both have names that begin with the same letter- neither rogers plate nor teds plate was purple and the peas were also not brought on the purple plate- toms food and the food on the pink plate are not peas or potatoes- donna did not bring the black platetry to determine the kind of food each person brought and what color plate it was on determining that the amount of cash agrees with the accounting records