Answer:
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Explanation:
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An automobile having a mass of 1100 kg initially moves along a level highway at 120 km/h relative to the highway. It then climbs a hill whose crest is 80 m above the level highway and parks at a rest area located there. Use a reference with kinetic and potential energy each equal to zero for the stationary highway before the hill. Let g = 9.81 m/s^2.
For the automobile, determine its change in kinetic energy and its change in potential energy, both in kJ. For the automobile, determine its change in kinetic energy, in kJ.
a. -8594
b. -663.1
c. -6.63x10^5
d. 663.1
Answer:
[tex]-6111.11\ \text{kJ}[/tex]
[tex]863.28\ \text{kJ}[/tex]
Explanation:
m = Mass of automobile = 1100 kg
v = Velocity of car = 120 km/h = [tex]\dfrac{120}{3.6}\ \text{m/s}[/tex]
h = Height of hill = 80 m
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
Change in kinetic energy
[tex]KE=\dfrac{1}{2}m(u^2-v^2)\\\Rightarrow KE=\dfrac{1}{2}\times 1100\times (0-(\dfrac{120}{3.6})^2)\\\Rightarrow KE=-611111.11\ \text{J}[/tex]
Change in kinetic energy is [tex]-6111.11\ \text{kJ}[/tex]
Change in potential energy is given by
[tex]PE=mgh\\\Rightarrow PE=1100\times 9.81\times 80\\\Rightarrow PE=863280\ \text{J}[/tex]
The change in potential energy is [tex]863.28\ \text{kJ}[/tex].
Merchandise without an expiration date like electronics, tools and home goods typically have a longer
Answer:
Shelf life.
Explanation:
In Business, an inventory is a term used to describe a list of finished goods, goods still in the production line and raw materials that would be used for the manufacturing of more goods in a bid to meet the unending consumer demands.
Simply stated, an inventory can be classified into three (3) main categories; finished goods, work in progress, and raw materials.
An inventory is recorded as a current asset on the balance sheet because it's primarily the most important source of revenue for a business entity.
Also, the three (3) main cost concept associated with an inventory are;
1. First In First Out (FIFO).
2. Last In First Out (LIFO).
3. Weighted average cost.
Shelf life can be defined as a measure of the length of time that a particular product could be kept or stored without it getting bad or becoming unsuitable for use by the consumers. Thus, the shelf life of a product is largely dependent on its expiration date.
Hence, merchandise without an expiration date like electronics, tools and home goods typically have a longer shelf life.
True or False; If I was trying to find the Voltage of my computer, and I was given the Watts and Amps it uses, I would use Watt's Law.
Answer:
true
Explanation:
How is the art of orgami useful in science and technology?
what are the relevance of report writing
Answer:Report writing consists of the history and facts of a project or of any kind of event. It is useful to record past history and an overall summary of decisions. Report writing helps to solve problems as a path. Writing a report will guide you in a way that will modernize details of the improvements and upcoming plans.
True or false Self Driving Cars are examples of emerging technology
Which of the following is NOT a risky food:
a
Raw Meat
b
Uncleaned fruits & vegetables
c
Bread
d
All of the above
e
Soft Cheeses
i think it's c. bread.
Answer:I think raw meat because if you eat raw meat you get sick and get stomach aches so always when you cook meat it kill the bacteria
Explanation:what I'm trying to says is stay safe
I love jimin from bts but my future says that I'm a date someone called peter and I'm going to be as singer whith my bro and sis and other sis what should I do I want jimin
Answer:
Its just a quiz hopefully, so you're okay! :)
Explanation:
Answer:
you can collab with jimin if you are a singer!!!
you never know
Explanation:
table saws you can use with __ or __ but not both at the same time
Answer:
wood or metal
Explanation:
sorry if incorrect
What kind of plan or development of road can be done to avoid traffic?
Answer: Breakdown Lanes
Reason: With breakdown lanes when a car needs to stop it can go to the backdown lane and fix its issue.
True or False; The Neutrons in an atom have a neutral charge.
Answer:
true
Explanation:
if it is not true it is false
Answer:
False.
Explanation:
Neutrons have no charges.
Please look at the attachments and help me with these questions
Answer:
there are no attachments
Explanation:
Print the two strings, firstString and secondString, in alphabetical order. Assume the strings are lowercase. End with newline. Sample output:
capes rabbits
Hai!
Please name what kind of Script your Using then I would love to help.
Java
C
C#
C++
Lua
JavaScript
HTML
Python
A communications system transmits a message. The probability that the message will be received is p. To be confident that a message is received at least once, the system transmits it n times. If a message is received, the receiver turns off and does not turn back on.
a. Assuming all transmissions are independent, what is the PMF of K, the number of times the pager receives the same message?
b. Assume p=0.8. What is the minimum value of n that produces a probability of 0.95 of receiving the message at least once?
Answer:
Follows are the solution to the given points:
Explanation:
In point a:
In the PMF of K, that pager receives its same message number of times, that is [tex]=\tiny \binom{n}{k}p^{k} (1-p)^{n-k}[/tex]
In point b:
The possibility of getting number of cultural at least once in x:
[tex]\to 1-P(\text{not receiving it at all})\\\\\to 1-(0.2)x\\\\\to 1-(0.2)x>0.95\\\\\to (0.2)x<0.05 \\\\[/tex]
appling the [tex]\log[/tex]:
[tex]\to x>0.25[/tex]
The value x is equal to 3.
What is the advantage to the speed or
trigger clamp?
Which of the following activities may involve the use of plant architecture?
A) crop rotation
B) companion planting
C) algal billion
D) raised gardening
Answer:
companion planting
Explanation:
i failed and saw all the correct answers
Which of the following is not a step in a building’s life cycle?
evaluation
maintenance
demolition
resource extraction
Answer:
resource extraction
Explanation:
common sense
26 V is measured across a 220 Ω resistance. This means that resistor current equals ________. Group of answer choices 1.2 A 57 A 118 mA 5.7 A
Which physical quantity measures the rate at which an object’s velocity changes?
A.
force
B.
speed
C.
acceleration
D.
torque
Answer:
I think the answer is b speed
Explanation:
What are the factors that influence the amount of elastic energy in an object? Select all
that are correct.
A. stretching
B. compression
C. hardness
D. mass
Answer:the answer is A B and C
A B and C
The more compact the body, the less friction, and the more mass the mass must have friction.
I need help with this ASAP please. This is basic carpentry, I just missed the first half of the year so I am a little behind. Can somebody answer the two questions?
Answer:
the half answer is pretty easy just look at it really really good hope this helps..
Explanation: