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
salantis [7]
2 years ago
7

Identify the object or objects in motion in each example of kinetic energy.

Physics
2 answers:
stellarik [79]2 years ago
7 0
A: a speeding train

Reasoning)
The train is getting faster making it in motion, unlike the bowl of hot soup which is an object that is not in motion.
Leto [7]2 years ago
5 0

Answer:

A speedy train

Explanation:

You might be interested in
Ten high-technology batteries are tested for 200 hours each. One failed at 20 hours; another failed at 140 hours; all others com
Bas_tet [7]

Answer:

Failure rate   = 20%

MTBF = 880 hours

Explanation:

given data

batteries = 10

tested = 200 hours

one failed = 20 hours

another fail at =  140 hours

solution

we know that Mean Time between Failures is express as = (Total up time) ÷  (number of breakdowns)    ....................1

so here Total up time will be

Total up time = 200 × 10

Total up time = 2000

and here

Number of breakdown = 1 at 20 hour and another at 140 hour = 2

so it will be  = (Total up time) ÷ (number of breakdowns)      .......2

=  \frac{2000}{2}   =  1000  

so here gap between occurrences is

gap between occurrences=  140 - 20

gap between occurrences = 120 hour

and

MTBF  will be

MTBF = 1000 - 120

MTBF = 880 hours  

and

Failure rate (FR)  will be

Failure rate (FR) =  1 ÷ MTBF    ................3

Failure rate (FR) = R÷T     ......................4

as here R is the number of failures and T is total time

so Failure rate (FR)  = 20%

4 0
3 years ago
Total these measurements. Your answer should indicate the proper accuracy. Be sure to include the units in your answer. (Remembe
vivado [14]

Answer:

10

Explanation:

This is tough. The last number  0.2 has only one significant figure. So while the sum of all the numbers is 12.3, you must only leave one sig figure. Rounding to the tenths gives 10.  

3 0
3 years ago
Signment
jeka94

Answer:

v = 5.15 m/s

Explanation:

At constant velocity, the cable tension will equal the car weight of 984(9.81) = 9,653 N

As the cable tension is less than this value, the car must be accelerating downward.

7730 = 984(9.81 - a)

a = 1.95 m/s²

kinematic equations s = ut + ½at² and v = u + at

-5.00 = u(4.00) + ½(-1.95)4.00²

u = 2.65 m/s    the car's initial velocity was upward at 2.65 m/s

v = 2.65 + (-1.95)(4.00)

v = -5.15 m/s

3 0
3 years ago
Which of the following is not a concern regarding waste
juin [17]
I believe it is noise pollution

4 0
3 years ago
What is the relationship between the temperature of a star and its luminosity?
Sladkaya [172]
The Luminosity of a star is proportional to its Effective Temperature to the 4th power and its Radius squared.
3 0
3 years ago
Other questions:
  • Define power and discuss how to determine it.
    8·1 answer
  • Calculate the energy needed to heat 4 kg of water from 25°C to 45°C.
    10·2 answers
  • A diver dives off of a raft - what happens to the diver? the raft? how does this relate to newton's third law? action force: ___
    5·2 answers
  • Which of the following statements best characterizes the surface of the planet Mars?The surface of Mars is continuously resurfac
    14·1 answer
  • A certain part of a flat screen TV has a thickness of 150 nanometers. How<br> many meters is this?
    13·1 answer
  • In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80m/
    8·1 answer
  • Explain what the ionsphere is and how it interacts with some radio waves
    11·1 answer
  • If you neglect air resistance, the horizontal component of a projectile A. Is always changing B. Remains constant throughout the
    13·1 answer
  • Samples of different materials, A and B, have the same mass, but the sample
    10·2 answers
  • A truck is driving north at 35 miles per hour and passes a car going south at 40 miles per hour. What is the speed of the car fr
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!