a worker drives a .500 kg spike into a rail tie with a 2.50 kg sledgehammer. the hammer hits the spike with a speed of 65 m/s. if one third of the hammers kinetic energy is converted to the internal energy of the hammer and spike how much does the total internal energy increase?
dang, someone help me and explain this pleasseeee!!

Answers

Answer 1

Answer:

Explanation:

To find the increase in total internal energy, we first need to find the kinetic energy of the sledgehammer before it hits the spike. We can use the formula:

KE = (1/2) * m * v^2

where KE is the kinetic energy, m is the mass, and v is the velocity.

Plugging in the values, we get:

KE = (1/2) * 2.50 kg * (65 m/s)^2

KE = (1/2) * 2.50 kg * 4225 m^2/s^2

KE = 5212.5 J

Next, we need to find the amount of energy that is converted to internal energy. Since one third of the kinetic energy is converted to internal energy, we can multiply the kinetic energy by 1/3 to find this value:

E = 1/3 * 5212.5 J

E = 1737.5 J

Finally, we need to find the total internal energy increase by adding the energy converted to internal energy to the initial internal energy of the hammer and spike. Since the initial internal energy is zero, the total internal energy increase is simply the energy converted to internal energy:

Total internal energy increase = 1737.5 J

Therefore, the total internal energy increases by 1737.5 J when the sledgehammer hits the spike.


Related Questions

A boy who is riding his bicycle, moves with an initial velocity of 5 m/s. ten second later, he is moving at 15 m/s. what is his acceleration

Answers

Answer:

1 m/s²

Explanation:

From the question,

Using

a = (v-u)/t.................... Equation 1

Where a = accelartion of the bicycle, v = Final velocity, u = initial velocity, t = time.

Given: v = 15 m/s, u = 5 m/s, t = 10 s

Substitute these values into equation 1

a = (15-5)/10

a = 10/10

a = 1 m/s²

Hence the acceleration of the bicycle is 1 m/s²

will give brainlist.

Answers

Answer:

Displacement (km)

Explanation:

The y axis is the vertical axis pointing up and down. This is labeled as the the displacement (km) in the graph.

What is the power of a refrigerator with voltage 110 V and
current 0.8 A?

Answers

Answer: 88

Explanation:

What are the formulas for Work, KE, GPE and Power?

Answers

Answer:

work=f×d

GPE =m×g×h

[tex]kinetic energy = \frac{1}{2} mv {}^{2} \\ power = \frac{w}{t} [/tex]

Please please please please please please please please please please please please please please please please please please please

Answers

c i think & mark as brain list?

Which nucleus completes the following equation?

Answers

Answer:

B. [tex]\frac{218}{85} At[/tex]

Explanation:

A P E X

The nucleus that completes the following equation is ²²⁶Ac₈₉

²²²Fr₈₇ →⁴He₂ +  ²²⁶Ac₈₉

Therefore the correct answer is option C.

What is radioactive decay?

The phenomenon of Radioactive decay is a type of nuclear reaction in which the unstable nucleus of a radioactive element lose energy in the form of nuclear radiation, some examples of radioactive decay are alpha decay, decay, and beta decay.

The complete equation for the nuclear reaction is

²²²Fr₈₇ →⁴He₂ +  ²²⁶Ac₈₉

For the given problem the nucleus completes the given equation is  ²²⁶Ac₈₉. The correct answer is option C.

learn more about radioactive decay

brainly.com/question/1770619

#SPJ2

what causes wind to flow ?​

Answers

Answer:

hi

Explanation:

as a result of the collision of hot and cold air

hope it helps

have a nice day

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Wind is the movement of air caused by the uneven heating of the Earth by the sun. ... Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system. At the same time, cooler, denser air moves over Earth's surface toward the Equator to replace the heated air.

Hope it helps!

Brainliest pls!

Follow me! :)

PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject

Answers

Answer:

The average speed for the runner B for the first 25 seconds was;

30/25 = 1.2 m/s

Explanation:

The average speed of an object is given by the following formula

[tex]Average \ speed = \dfrac{Total \ distance \ covered}{Total \ time \ taken \ to \ cover \ the \ distance}[/tex]

From the graph, we have;

The coordinates of the runner B at the start = (0, 0)

The coordinates of the runner B after 25 seconds = (25, 30)

The total distance covered by the runner B after 25 seconds = The difference between the position at 25 seconds and the origin which is 30 meters

∴ The total distance covered by the runner B after 25 seconds = 30 meters

The time it takes the runner B to cover the distance = The 25 seconds

[tex]\therefore \ For \ the \ runner \ B, the \ average \ speed = \dfrac{30 \ meters}{25 \ seconds} = 1.2 \ m/s[/tex]

The average speed for the runner B for the first 25 seconds = 30 m/(25 s) = 1.2 m/s.

What is the wavelength of a wave that is traveling at 343 m/s with a frequency of 1000 Hz

Answers

Answer:

[tex]343 \div 1000 = 0.343[/tex]

wavelength is equivalent to the velocity divided by the frequency

6. Sandy adds 3 sugar packets to her tea in order to make it sweeter. She stirs in the sugar and then takes a sip. She notices that not all the sugar was dissolved. What type of solution did she make?

A. Saturated B.Unsaturated C.Supersaturated D.Mildly saturated

Answers

Answer:

C.Supersaturated

Explanation:

There are three types of solution:

SATURATED SOLUTION:

It is the solution that contains maximum amount of solute dissolved in a solution in normal conditions.  

UNSATURATED SOLUTION:

It is the solution that contains less than the maximum amount of solute dissolved in a solution in normal conditions. It has space for more solute to be dissolved in it.

SUPERSATURATED SOLUTION:

It contains more than the maximum amount of solute dissolved in it. Such a solution has no capacity to dissolve any more solute under any conditions.

Since the sugar is no more dissolving in the tea and has settled down. Therefore, the solution is:

C.Supersaturated

A spring of force constant 1500 Nm-l is acted
upon by a constant force of 75 N. Calculate
the potential energy stored in the spring.​

Answers

Answer:

1.876 J

Explanation:

First, let’s calculate the compression of the spring from the Hooke’s law:

F=kx,

here, F=75 N is the force acted on the spring, k=1500 N⁄m is the force constant of the spring, x is the compression of the spring.

Then, we get:

x=F/k=(75 N)/(1500 N/m)=0.05 m.

Finally, we can find the potential energy stored in the spring:

PE=1/2 kx^2=1/2∙1500 N/m∙(0.05 m)^2=1.875 J.

correct my answer if it's wrong ^^

Explain a situation where chemical energy is transformed into light and heat energy.

Answers

Answer:

fire

Explanation:

burning the the oil

Help!!! If you cannot type in the box, dont answer.

Answers

I can

Exp: because I just can

Answer: lollllllllllllllllllllll

Explanation:

If all the forces acting on an object are balanced then the net force acting on it is zero. True or, false?

Answers

Answer:

true

Explanation:

if all forces are equal then there would be no stronger force to give any net force so it would be zero

ممكن حل بسرعة
please help ​

Answers

Answer:

I could help but i dont speak or understand a word of Arabic im so sorry.

Explanation:

What is the source of heat for convection currents in the mantle layer of earth

Answers

Answer:

Magma from the core

Explanation:

...?

magma your welcome:)

4. Earth and Venus are almost identical in size and smaller than the Sun), but Venus is located closer to the Sun. Which of the following statements must be true?
O A Earth will have a wider penumbra than Venus
O B. Earth will have a shorter umbra than Venus
O C. Earth will have a longer umbra than Venus.
OD. The umbra and penumbra of Venus and Earth will have nearly the same length and shape.

Answers

The answer to the question is B

Please help the best answer get brainlist pretty easy questions

1 - List the type of fossil fuels we use in our daily lives.

2 - List the disadvantages of using fossil fuels

Answers

Answer:

1, Coal,oil,natural gas,petroleum ...etc

2, -they pollute the environment

-In case of irresponsible use ,they can be

dangerous

-it is more reliable an renewable

Help
A. 12,240
B. 6,120

Answers

Answer:

A. 12,240.

Explanation:

1,530 times 8.0 = 12,240.

hope this helped :)

When electrons are moving it is called
A field
B electricity
C friction
D attraction

Answers

Im pretty sure it’s in a field

What are the purposes of these items aboard the Voyager probes? • Low-energy particle detector: • Magnetometer boom: • High-gain antenna: • Photopolarimeter: • Cosmic ray:

Answers

Explanation:

1. Low-energy particle detector: This particle detector measures the charged particles of the solar winds.

2. Magnetometer boom: This device measures magnetic fields produced by astronomical bodies.

3. High-gain antenna: A HGA has a narrow radio beam that is used to enhance the strength of signal. They simply amplify the weak signals.

4. Photopolarimeter: This is an instrument that is used to measure the strength and intensity and polarization of reflected light.

Answer:

what they said

Explanation:

If force 1 has a magnitude of 5 N (forward) and force 2 has a magnitude of 30 N (forward), what is the net force acting on the object?

A.) 25 N forward
B.) 35 N forward
C.) 25 N backwards
D.) 35 N backwards

Answers

D I am pretty sure thanks

Why are some forces considered to be noncontact forces? A. Objects must be far apart in order to exert a force. B. Objects do not have to touch each other to experience a force. C. Objects push each other apart to increase the distance between them. D. Objects must be large in size in order to exert a force that is strong enough to notice. is it a,b,c or d?

Answers

Answer:

B. Objects do not have to touch each other to experience a force.

Explanation:

For example ..One of the noncontact forces is magnetic force whereby a magnetic object will be attracted to another magnetic object of oppsite charged particles, through waves called electromagnetic waves. On the other hand, the two magnetic objects of similar charged particles can repel through electromagnetic waves..

X-rays have so much energy they can go right through your ___ and ___.

Answers

Answer:

X-rays have so much energy they can go right through your muscles and fat.

Explanation:

There are actually more ways to fill in those two blanks... Different parts of the body absorb x-rays in varying degrees, but soft tissues (like skin, muscles, fat, and organs) allow most of the X-rays to pass through.

Many people who have contracted a disease called chicken pox were told by their doctors that they would never have this
disease again. Why?

Answers

Answer:

Once you've had chickenpox you can't again.

Explanation: the virus remains inactive in your nerve tissue. Although it's unlikely you will get chickenpox again, the virus may reactivate later in life and cause a related condition called shingles.

Why must the Moon travel more than a full orbit around the Earth for the full moon to be complete?

Answers

Answer:

The difference between the sidereal and synodic months occurs becuase as our moon moves around the earth, the earth also moves around our sun. Our moon must travel a little farther in its path to make up for the added distance and complete the phase cycle.

Explanation:

Hope this helps.

What moon phase would be at positions 1 and 5?
A. 1 full moon and 5 is new moon.
B. 1 is a lunar eclipse and 5 is a solar eclipse.
C.1 is a waxing gibbous and 5 is a waning crescent.
D.5 is a full moon and 1 is new moon.
Please help, This will affect my grade!​

Answers

Answer:

C.1 is a waxing gibbous and 5 is a waning crescent.

Sometimes hikers carry radio beacons so that search and rescue teams can find them in case of emergency. Some of these beacons transmit radio waves with a frequency of 300,000 Hz. (300kHz) What is the wavelength of these waves?

Answers

Answer:

1000 m

Explanation:

Given that,

The frequency of radio waves f = 300,000 Hz

We need to find the wavelength of these waves.

The formula to find wavelength is as follows :

[tex]c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{300000}\\\\\lambda=1000\ m[/tex]

So, the wavelength of these waves is 1000 m.

Hurricanes along the Gulf Coastal areas of Texas increase the rate of coastal erosion.
Over time, this erosion can greatly affect the coastal environment.
Which of the following is a result of erosion on coastal environments?

Answers

Answer:

its the last question

Explanation:

Thats because erosion takes away stuff

If spring has a spring constant of 500 N/m and is stretched .50 meters,how much energy is stored in the spring ((show work for full credit, show equation))

Answers

Answer:

The energy stored is: 62.5 Joules

Explanation:

Given

[tex]k = 500N/m[/tex] --- spring constant

[tex]x = 0.5m[/tex] --- stretch

Required

The amount of energy

This is calculated as:

[tex]U = \frac{1}{2} kx^2[/tex]

[tex]U = \frac{1}{2} * 500N/m * (0.5m)^2[/tex]

[tex]U = 250N/m * (0.5m)^2[/tex]

[tex]U = 62.5\ J[/tex]

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