1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rudiy27
3 years ago
8

How much thermal energy is created in the slope and the tube during the ascent of a 30-m-high, 120-m-long slope?

Physics
1 answer:
charle [14.2K]3 years ago
7 0
<span>The change in internal energy is only gravitional PE because the tube is being drug up at a constant speed. Since it is at a constant speed, the change in KE is 0. Change in PE = m*g*h = 78 kg * 10 m/s^2 * 30 m = 23400 J Work done on the system is from the force Work = force * distance = 350 N * 120 m = 42000 J So, work added 42000 J to the system, but the rider's energy only increased 23400 J. Therefore, friction took up the difference. Friction is where the thermal energy comes from Q = 42000 J - 23400 J = 18600 J. Therfore, friction generated 18600 J of heat to the surroundings.</span>
You might be interested in
To calculate the heat needed to melt a block of ice at its melting point what do you need to know
Alisiya [41]
You have to know what the temperature of your suroundings first and then you can melt it with the tools you need. yeah that's another thing know what tools you need and then be safe!:D
3 0
3 years ago
You are In-line skates at the top of a small hill. Your potential energy is equal to 1000 J. The last time we checked, your mass
stira [4]

A) <u>Weight = mass × acceleration (due to gravity)  </u>

= 60×9.8  

= 588 N  

<u>B) Potential energy = mass x gravity x change in height </u>

1,000 = 60.0 x 9.8 x h

h =  1.7 m      

<u>C) Kinetic energyF = potential energyI </u>

KEF = 1/2mv2  

PEI = mgh = 1,000 J

1/2mv2 = 1,000

1/2(60.0)v2 = 1,000  

v2 = 33.33

v = 5.77 m/s

3 0
3 years ago
Using the same cost and time estimates, consider any trade-offs that SciTech may have to make to complete the project.
ch4aika [34]

Answer:  

Oracio is the most cost-effective choice because he would cost the least to complete the project. However, he would also take the longest amount of time. Camilla could complete the job the fastest, but she costs more than Oracio. SciTech will have to decide if it is more important to save money or complete the work quickly to meet the deadline.  

Hope this helps :)

4 0
3 years ago
Read 2 more answers
What time will the lunar eclipse happen central time?.
alexandr402 [8]
It was about 9:30 p.m. sorry if the answer is wrong
7 0
2 years ago
A proton travels with a speed of 5.02×10⁶ m/s in a direction that makes an angle of 60.0° with the direction of a magnetic ficld
Triss [41]

The magnitude of the magnetic force on the proton is 1.25× 10—¹³ N.

Speed of the proton = 5.02 × 10 ⁶ m /a

Angel of between the velocity and the magnetic force = 60 °

The magnitude of magnetic field B = 0.180 T

The magnitude of the magnetic force on the proton is,

F = q(v \times B)

F = qvB \: sin \:  θ

F = 1.6 \times 10 ^{ - 19}  \times 5.02 \times 10 ^{6}  \times 0.180 \times  \: sin \: 60°

= 1.25 \times 10 ^{ - 13}  \: N

Therefore, the magnitude of the magnetic force on the proton is 1.25× 10—¹³ N.

To know more about magnetic force, refer to the below link:

brainly.com/question/23096032

#SPJ4

4 0
1 year ago
Other questions:
  • The springs of a 1800 kg car compress 5.4 mm when its 66 kg driver gets into the driver's seat. If the car goes over a bump, wha
    6·1 answer
  • PLEASE ANSWER QUICK!! 3. Fill in the chart below to identify the properties of shape and volume for each type of matter.
    6·1 answer
  • Which example is of researcher bias in interpreting data?
    5·1 answer
  • What is the structure of a magnet?
    11·1 answer
  • The most common type of plant on earth is
    14·1 answer
  • Which layer of the atmosphere is between the mesosphere and the exosphere?
    13·2 answers
  • Helpppppppppppp.......!
    15·1 answer
  • Two charges of magnitude ‒Q and +4Q are located as in the figure below. At which position (A, B,
    15·1 answer
  • What is the mass of a person walking at a speed of 0.8 m/s if their momentum is 52.0 kg m/s
    13·1 answer
  • when two resistors are wired in series with a 12 v battery, the current through the battery is 0.31 a. when they are wired in pa
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!