Answer:
KE1 = 1/2 m v1^2
KE2 = 3 KE1 = 3 * 1/2 m v1^2 = 1/2 m v2*2
3 v1^2 = v2*2
v2 = 3^1/2 v1
1. Ethan is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day. The diagram at the right is a free-body diagram. It uses arrows to represent the forces acting upon the bag. Each force is labeled according to type. The magnitude of the force is represented by the size of the arrow. Use the free body diagram to determine the net force acting upon the bag. The values of the individual forces are:
Fgrav = Fnorm = 60.5 N
Fapp = 40.2 N
Ffrict = 5.7 N.
From the calculations and the free body diagram, the net force that acts on the body is 34.5 N
What is the net force?The net force refers to the force that is acting on a body. Let us note that the gravitational force and the normal force cancel out each other. Thus the two force that act on the body are the applied force and the frictional force.
Thus;
The net force that acts on the body is;
40.2 N - 5.7 N = 34.5 N
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which kind of energy transformation occurs in a gasoline-powered car?
F. Chemical energy is converted into mechanical energy.
G. Mechanical energy is converted into light energy.
H. Light energy is converted into sound energy.
J. sound energy is converted into chemical energy.
Answer:
Chemical energy is converted into mechanical energy
Explanation:
Chemical energy stored in the bonds of hydrocarbons is released as heat which drives the piston in a car to produce circular motion that propels the car.
3. Pandemic took its toll on our health. We cannot go outside to do our physical activities and socialize with other people like we used to. To maintain our active lifestyle even in the comforts of our home, we must do balanced activities. This will help us take good care of ourselves and help us cope with what is happening around us. We can identify the tasks we do at home as work, or no work done.
● On the table below, list down the personal care and school work-related activities you do at home. Classify if it has work or no work done. Furthermore, identify the form of energy while you are doing the task.
Answer:
force
Explanation:
work done x time the person can determine
not sure really what to answer but here are 4 parts.
personal care
1.) working out
2.) brain games
3.) Manual labor
4.) Sleep to make you relaxed and have energy for the next day
5.) working a job (if you have one)
school relate
1.) studies for at least 15 minutes since a humans intention spam is around 15 minutes
2.) Homework
3.) taking notes
4.) Analysis your progress
5.) Test yourself if you remember the information
if a student is sitting down for 5 hours doing nothing, he would soon be getting drowsy because lack of activity along with potentially getting depression or some other kinds of related features.
that last question I don't know how to answer that. that's all you bud.
if a 5,000 investment earn $1,575 interest over over 18 years what is the annual interest rate
Answer:
I = 1575 / 5000 = 31.5 % interest on investment
(1 + i)^18 = 1.315 where i interest is earned per year
One can use logs or
1 + i = 1.315^1/18 = 1.0153
So the annual interest rate is .0153 or 1.53%
Or
5000 (1 + i)^18 = 6575
(1 + i)^18 = 1.315
18 log (1 + i) = log 1.315
log (1 + i) = .006607
1 + i = 1.0153
i = .0153 = 1.53%
Which forces are acting on the shoe as you drag it across the floor?
friction and applied
friction, applied, and gravity
friction and gravity
friction, applied, gravity, and normal
Answer:
I put friction and applied
Explanation:
a spiral galaxy can be described as what type of shape
Spiral galaxies are also known as twisted collection of stars and gas that have often beautiful shape and are made up of hot young stars.
There are various types of galaxies based on their shapes such as spiral, elliptical, oval etc. The spiral shaped galaxies are called spiral galaxies.
What are galaxies?Galaxies are a groups of stars, dust and dark matter which are connected by the gravitational force. There are billions of galaxies in the universe and each containing trillions of stars. The galaxy nearest to earth is milky way.
The spiral structure that radiate from the galactic disc's core and give spiral galaxies their name. The central bulge, at the ends of which the spiral arms originate, is seen to have an additional component in the shape of a bar-like structure in about two-thirds of all spirals.
Nearly the course of the universe's history, the ratio of barred spirals to barless spirals has probably varied, going from only 10% approximately 8 billion years ago to about a quarter 2.5 billion years ago to over two-thirds of the galaxies in the observable universe at the present.
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Fun facts about Israel
Answer:
It's Real...
Explanation:
Answer:
Israel Is Part of the Holy Land
Explanation:
what is the main cause of temperature changes in the atmosphere
Answer:
The main driver of climate change is the greenhouse effect. Some gases in the Earth's atmosphere
1)Why can't we use science to tell whether we should use a weapon or clone an animal? Explain.
2)What are the levels of Scientific Knowledge from the Lowest to the Highest?
3)What are the 5 steps of the scientific method ? Explain what EACH one is.
4)What was one of the real examples of the scientific method we covered in class? (hint: spider, comet)
5)Why do we call the metric system the “SI” system in Science?
6)The Metric System is based on the meter and what other thing? Why does that make metric easier to understand?
7)What are 3 base units we use for Length, Volume, and Mass? How do you represent them with initials? Which one is capitalized?
8)
25 km = cm
800mg = g
12500 mL = L
358mm = m
76kg = g
20L = ml
9)Metric is based on universal constants (things you can measure) rather than examples (a person’s hand or food or a grain of rice). Why is this a good thing? Why is it important for Science too?
10)What did these folks do wrong?
Belinda and Suzy are working with Bob in the lab today. They decide to play a trick on him. They tell him that even though it isn’t written down, the teacher said that when they are done with today’s experiment, they should drink the solution because it tastes just like Dr.Pepper. Bob believes them (Belinda is very cute, after all) and makes a moveto pick up his still steaming beaker. Name at least two things that these three should improve on.
An
A continuación, se explicará la incidencia que este recurso formal tiene en el significado completo del poema.
Think about the reasons behind the cost of the Birkin bag and explain why it costs $60,000 in your own words. Do you think that this is a good marketing strategy? Why? Can you think of any other products (clothes / elctronics / anything) that use the same strategy? Does it work?
Answer:
In terms of both price and availability, the Birkin bag is as elusive as it is exclusive. For more than two decades, the bag has been the most sought item in the handbag industry. For such a modest bag, that's a lot of staying power (in looks alone, the design itself takes some 18 hours and is done by a single craftsman).
Of course, it's likely that the bag's rarity is what keeps it at the top of every want list. It is difficult, for example, to stroll into a Hermès store and buy a bag –– even if you could afford to pay the minimum price of $10,000. No, you have to be on an elite list to receive a Birkin.
Explanation:
There are alot more things like the Birkin Bag that use the same marketing skills and it works for alot of companies.
Why do patterns of earthquakes become deeper the farther the distance from a plate boundary?
Answer:
The result is that epicentres of earthquakes farther to the interior of the overriding plate will correspond to increasingly deep earthquakes.
plz will someone help me on 28 will give brainlest if right plus 100 points.
which takes more energy, going from 0 to 30, or from 30 to 60?
what is the modern symbol for the element Bo
Answer:
Bo (modern symbol B) = Boron
Explanation:
Hope this helps
Un objeto de 5 Kg se mueve a 20 m⁄s, que trabajo habrá que realizar para que su velocidad se duplique:
Answer:
$₽﷼£❤☺wkhisrjcoycfivyudgone sports where it would be good to have long thick bones , explain your answer
Answer:
Marathon/Long distance running, swimming, etc
Which best describes why projectiles move in a curved path?
A) They have constant horizontal velocity and vertical acceleration.
B) They have horizontal acceleration and constant vertical velocity.
C) They have horizontal momentum and constant vertical velocity.
D) They have horizontal acceleration and vertical momentum.
Answer:
A. The have horizontal velocity and vertical acceleration.
Explanation:
Projectiles move in a curved path because : ( A ) They have constant horizontal velocity and vertical acceleration
Projectile movementProjectiles move in a curved path due to constant horizontal velocity and vertical acceleration due to gravity that acts on it. Projectile movement starts when an object is thrown/projected into the air. The object thrown into the air will travel in a curved path known as trajectory.
Hence we can conclude that Projectiles move in a curved path because They have constant horizontal velocity and vertical acceleration.
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A person travels 350 km at an average speed of 60 km/hr. How long did it take?
Answer: 5.8 hours
Explanation:
Time= distance divided by speed, so:
350 divided by 60= 5.8 hours
If a virus were to infect and destroy only the chloroplast in a cell, how would that affect plants cells ability to make ATP
Answer:
por ver cp
Explanation:
sisisi cp osea caldo de pollo
I NEED A SCIENCE EXPERT TO GIVE ME THE RIGHT ANSWER TO THESE ASAP
Answer:
Control variable
Random variable
If two objects are dropped, they both hit the ground at the same time.
A helicopter lifts 35m vertically into the air and then comes back down to the ground.
What is the distance of the helicopter’s flight?
What is the displacement of the helicopter’s flight?
Explanation:
Distance = Total path length = 35m + 35m = 70m
Displacement = Final - Initial position = 0m
A man is pulling a cart to the left with a force of 60 N. A second man is pushing the cart to the left with a force of 30 N. There is a force of 90 N acting on the cart in the opposite direction. What is the net force acting on the cart AND how can the motion of the cart be described?
This cart would move with constant velocity or be at rest because the net force is equal to zero (0), which means the three (3) forces acting on the cart opposes each other.
Let the first force be A. Let the second force be B.Let the third force be C.Given the following data:
Force A = 60 Newton, to the left.Force B = 2 Newton, to the left.Force C = 90 Newton, to the right.To find the net force acting on the cart:
A net force can be defined as the vector sum of all the forces that are acting on a physical object or body.
This ultimately implies that, a net force is a single (one) force that substitutes the effect of all the forces acting on a physical object or body.
Mathematically, net force is given by the following:
[tex]Net \;force = F_1 + F_2 + F_3 + F_4 + .....F_n[/tex]
Where:
F represents each force.[tex]Net\; force = 60 + 30 + (-90)\\\\Net\; force = 90 - 90[/tex]
Net force = 0 Newton
Based on Newton's First Law of Motion, this cart would move with constant velocity or be at rest because the net force is equal to zero (0), which means the three (3) forces acting on the cart opposes each other.
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please help me i’m stuck on this question
help me out please
A 0.5 kg rock and a 150 kg boulder were dropped from a cliff 65 meters high. Which one would hit the ground first ignoring air resistance?
Find the instantaneous acceleration at t=ls for an object moving along a straight axis with velocity function:
v(t)= -t3+5t
Answer:
A. 2m/s^2
B. 5m/s^2
If an astronaut pushes on a box in space, how many forces are involved in this interaction?
A. One
B. Two
C. Three
D. Four
Answer: B. two
Explanation:
There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.
However, In the absence of any forces, no force is required to keep an object moving.
This seems like a simple question, but if you wanted to get technical it would in fact be two forces. As there is still a miniscule amount of gravity.
Will give brainliest
A ball is kicked straight up from the ground with a speed of 10.0 m/s. How long will the
ball be in the air?
The total amount of time the ball would be in the air is 2.04 secs
To determine how long the ball will be in the air,
We will the equation for calculating total time of flight, T
For a projectile motion, the total time of flight of an object is given by
[tex]T = \frac{2usin\theta}{g}[/tex]
Where T is the total time of flight
u is the velocity of projection
θ is the angle of projection
and g is the acceleration due to gravity
From the question,
u = 10.0 m/s
θ = 90° (This is because the ball is kicked straight up)
Put these values into the equation,
[tex]T = \frac{2usin\theta}{g}[/tex]
[tex]T = \frac{2\times 10.0 \ sin90}{9.8}[/tex]
(NOTE: g = 9.8 m/s²)
∴ [tex]T = \frac{2\times 10.0 \times 1}{9.8}[/tex]
[tex]T = \frac{20}{9.8}[/tex]
T = 2.04 secs
Hence, the total amount of time the ball would be in the air is 2.04 secs
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the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Hope this helps you
c. You push a sled of mass 15 kg across the snow with a force of 180 N for a distance of 2.5 m. There is no friction. If the sled started at rest, what is the velocity
of the sled after you push it? Please I really need help 60 pointsss
Explanation:
7.7 m/s
1st determine you subject slade to you have a mass of 15 kg being subjected to a force of 180N
so.
180N/15kg=180(kg m)/s^2/15kg=12 ms^2
now determine how long u pushed it
d=0.5 A T^2
sutable the known values getting
2.5 m = 0.5 12 ms^2 T^2
2.5m= 0.6 ms^2 T^2
0.41667 s^2=T^2
0.645497224s=T
the velocity multiply the time by the acceleration giving
0.645497224 s 12 ms^2 =7.745966692 ms.
after rounding the 2 significant u get 7.7 ms
what is the force of a punch if it accelerates at 0.2m/s2 and has a mass of 2kg?
Answer:
0.4 N
Explanation:
We know ,
F = maF = 0.2 * 2 NF = 0.4N