Answer:
157,300 JExplanation:
The kinetic energy of the car can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2 } \times 650 \times {22}^{2} \\ = 325 \times 484[/tex]
We have the final answer as
157,300 JHope this helps you
plz help meh and explain how to do it i suck at physics...
The variables with the subscript "i" refer to the initial masses (m) and velocities (v) of the shark and fish.
[tex]m_{1,i}[/tex] = 10 kg
[tex]m_{2,i}[/tex] = 0.5 kg
[tex]v_{1,i}[/tex] = 5 m/s
[tex]v_{2,i}[/tex] = 0 m/s
The variables with "f" refer to the final masses and velocities. Use the law of conservation of momentum to calculate these. The law says that the total momentum of the shark and fish before the fish is eaten should be equal to the momentum after the fish is eaten. We have
[tex]m_1v_1[/tex] = (10 kg) (5 m/s) = 50 kg • m/s
[tex]m_2v_2[/tex] = (0.5 kg) (0 m/s) = 0 kg • m/s
so the total momentum before the fish gets eaten is 50 kg • m/s.
When the shark eats the fish, its mass increases by 0.5 kg. So
[tex]m_{1,f}v_{1,f}[/tex] = (10.5 kg) [tex]v_{1,f}[/tex] = 50 kg • m/s
Solve for [tex]v_{1,f}[/tex] by dividing both sides by 50.5 kg to get
[tex]v_{1,f}[/tex] = (50 kg • m/s) / (50.5 kg) ≈ 4.76 m/s
1According to the passage, where is “the most expensive house” located?
A) on the surface of Mars
B) Hollywood, CA
C) circling above Earth
D) New York City
Answer:
C) circling above earth
After reading the excerpt, readers can visualize
Charlotte as
ay
yed
e
At
O a quiet and shy girl.
an outgoing and energetic girl.
a studious and deep-thinking girl.
a sarcastic and cruel girl.
an
aisle.
Answer:
Its b
Explanation:
Hope this helps
Answer:
b
Explanation:
how much force is needed to lift a 25 kg mass at a constant velocity?
F = 245N
The Acceleration of an object in a free fall is 9.8 m/s
force= 25kg X 9.8m/s
WASSCE
11. An incident ray is reflected normally by a
plane mirror onto a screen where it forms
a bright spot. The mirror and the screen
are parallel and 1 m apart. If the mirror is
rotated through 5°, calculate the
displacement of the spot.
A. 8.7 cm.
B. 10.0 cm.
C. 15.4 cm.
D. 17.6 cm.
WASSCE
Answer:
i think the answer is letter c
A person slides a box down a ramp. The box starts from rest 2m above the lowest point. The ramp is frictionless. Once the box reaches the bottom there is friction. For every 1m the box travels on the flat part increases by 100 J. Where does the box stop? The box has mass of 5 kg.
Answer:
.98m
Explanation:
Vf=Vi+2at
(V F)^2+2 ( change in distance )
X f= i ( change in V & T )
EK=1/2Mv^2,EG=mgh
This question involves the concepts of the law of conservation of energy, work done, Newton's Second law of motion, and equation of motion.
The box stops at a distance of "1.02 m".
First, we will use the law of conservation of energy to find out the final velocity when the box reaches the flat part.
[tex]Loss\ of\ Potential\ Energy=Gain\ in\ Potential\ Energy\\mgh=\frac{1}{2}mv^2\\\\2gh=v\\v=\sqrt{2gh}[/tex]
where,
v = speed = ?
g = 9.81 m/s²
h = height = 2 m
Therefore,
[tex]v=\sqrt{(2)(9.81\ m/s^2)(2\ m)}[/tex]
v = 6.26 m/s
Now, we will use the formula of work done to find out the force applied to the box to stop the motion:
[tex]W = Fd[/tex]
where,
W = Work Done = 100 J
F = Force applied = ?
d = displacement = 1 m
Therefore,
[tex]100\ J = F(1\ m)\\F = 100\ N\\[/tex]
Now, we will use Newton's Second Law of Motion to find out the deceleration of the person:
[tex]F=ma[/tex]
where,
m = mass = 5 kg
a = decceleration =?
Therefore,
[tex]100\ N = (5\ kg)a\\\\a=\frac{100\ N}{5\ kg}\\\\a = - 20\ m/s^2[/tex]
negative sign shows deceleration.
Now, we will use the third equation of motion to find the distance at which the box stops.
[tex]2as=v_f^2-v_i^2\\2(-20\ m/s^2)s=(0\ m/s)^2-(6.26\ m/s)^2\\\\s=\frac{40\ m/s^2}{39.24\ m^2/s^2}[/tex]
s = 1.02 m
Learn more about equations of motion here:
brainly.com/question/20594939?referrer=searchResults
The attached picture shows the equations of motion in the horizontal and vertical directions.
In a tug of war , two teams pull on the rope with a certain force. If team A pulls on it with a force of 225 N and team B pulls on it with a force of 360 N, what is the magnitude of the resultant force on the rope?
Answer:
135 N
Explanation:
Given that:
In a tug of war, team A pulls the rope with a force of 225 N; &
Team B also pulls with a force of 360 N
The magnitude of the resultant force is the difference between the two forces since they are positioned in the opposite direction.
Thus;
The magnitude = 360 N - 225 N
So, magnitude of resultant force on the rope = 135 N
Your friend wants to lose weight around the belly. Your friend is planning to do crunches every day to lose the weight, but is not planning on doing any other exercises. Do you think this strategy will be effective? Why or why not? What can your friend do to increase the pace of weight loss? Explain your answer. Please hurry I need a paragraph!!!
But I will put it in my own words so it won't be plagerism!
Answer:
i don't think it will work
Explanation:
because in order to lose weight, you have to do more than one stretch because weight loss takes multiple steps and not just one exercise, it would also involve you to eat healthy and to increase the pace, your friend could go running, do yoga, eat healthier, drink more water, and do more than just a core workout and etcetera.
If a rock sample has a mass of 1.17 g and a volume of 0.33 cm3,
Answer:
then it's a rock
Explanation:
HURRY I NEED IT NOW IM BEING TIMED!
Research three of the world's most famous soccer players. Compose two complete paragraphs on each player for a total of at least 300 words, explaining their path to success.
Assignment Guidelines:
Include childhood, work ethic, and hardships.
PLEASE!!! LOOK AT THE POINTS IT'S 20
Answer:
pele
Explanation:
*at 17 won Brazils first world cup victory in 1958
*missed much of the '62 title defense to injury,
*led the charge with a Golden Ball-winning performance as the Seleção cruised to their third victory in four tries in 1970
*earning the nickname "O Rei" (The King) for his sublime efforts.
*Pelé is credited with 1,283 career goals, and while many of them came in semi-formal competition, the mind-boggling total emphasizes his celestial ranking in the game's history.
*Pelé was born Edson Arantes do Nascimento on October 23, 1940 in Três Corações, Brazil, the first child of João Ramos and Dona Celeste. Named after Thomas Edison and nicknamed "Dico," Pelé moved with his family to the city of Bauru as a young boy
*As an adolescent, Pelé joined a youth squad coached by Waldemar de Brito, a former member of the Brazilian national soccer team. De Brito eventually convinced Pelé's family to let the budding phenom leave home and try out for the Santos professional soccer club when he was 15.
*Pelé signed with Santos and immediately started practicing with the team's regulars. He scored the first professional goal of his career before he turned 16, led the league in goals in his first full season and was recruited to play for the Brazilian national team.
*The world was officially introduced to Pelé in the 1958 World Cup in Sweden. Displaying remarkable speed, athleticism and field vision, the 17-year-old erupted to score three goals in a 5-2 semifinal win over France, then netted two more in the finals, a 5-2 win over the host country.
The young superstar received hefty offers to play for European clubs, and Brazilian President Jânio Quadros eventually had Pelé declared a national treasure, making it legally difficult for him to play in another country. Regardless, Santos club ownership ensured its star attraction was well paid by scheduling lucrative exhibition matches with teams around the world.
btw this I copied and pasted so make sure to change wording
Answer:
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7. The night of desest is very cold and the day is very
hot
Give reason
Answer:
1) Sand cannot hold the heat. It acts like a mirror to the sun. During the daytime, it stays warm, and when the Sun is absent it loses all its heat making the nights colder. There's nothing in the desert that can either absorb heat from the sun or hold it on the surface when the sun is set.
2) Deserts are hot primarily because of a lack of water. When the sun shines on the ground, all of the absorbed sunlight goes into raising the ground's temperature. DESERTS ARE COLD AT NIGHT:Because of the lack of water in the ground, and little water vapor in the air, most deserts can get quite cool at night.
3) The temperature in the desert can change drastically from day to night because the air is so dry that heat escapes rapidly at night. The daytime temperature averages 38°C while in some deserts it can get down to -4°C at night. The temperature also varies greatly depending on the location of the desert.
As things are heated, _____ increases. (one or more possible answers)
a. Mass
b. Volume
C. Atomic movement
d. Atomic size
Answer:
c,d
Explanation:
c and d because when you heat the atom move and eɛpand
Which statement best describes evidence that a chemical reaction occurs as a cake bakes? A The water in the cake batter evaporates. B The cake rises as gas bubbles form in the baking cake. C The cake takes the shape of the container in which it is baked. D The water in the cake batter is used to keep the cake moist as it bakes.
Answer:
B
Explanation:
Bubbles are a product of a chemical reaction.
The statement which best describes a chemical reaction is the cake rising
as gas bubbles form in the baking cake.
Chemical reaction involves the formation of new chemicals through
reaction between one or more chemicals.The formation of bubbles indicate
the formation of a new gas and is a characteristic of a chemical reaction.
The formation of a bubble in the cake bake means that a new chemical has
been formed which indicates presence of chemical reaction.
Read more on https://brainly.com/question/16923656
What type of combination is a mixture?
Answer:
A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
Explanation:
Answer:
A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
Explanation:
I just did the quiz on study jams and I got them all correct
If you are traveling at 80 km/h for 1.5 hours, how far will you travel?
Answer:
120
Explanation:
1h=80
0.5h=40
1h+0.5h=80+40
=120
Brianna is rowing a small boat across a pond. The air is calm; there is no wind
blowing.
a. What type of friction is resisting her motion?
b. If two friends join her in the boat, will the friction force change? Why or why not?
PLEASE I NEEEED HEEEEEEEEEEEELP.
An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c. take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface
A. Fluid Friction B. Yes, there is more mass on the boat.
Explanation:
Not very sure about B but goodluck.
A foam square has a mass of 62 g and a volume of 72 cm'. What is the density?
What is Vatiable Velocity?
Answer:
Explanation: When a body covers unequal distances in equal intervals of time in a specified direction, the body is said to be moving with a variable velocity. Example: A rotating fan at a constant speed has variable velocity, because of continuous change in direction.
The average speed of a cart during a 15 s interval is 3.0 m/s . What is the total distance travels by the cart
Answer:
45m
Explanation:
speed= distance/ time
3.0= distance/ 15
*15 on both sides
45m= distance
What are other words for saying that a wave is "transmitted" through a medium?
Answer:
Other words for saying that a wave is transmitted through a medium would be a wave transfers from one medium into another.
Explanation:
Other words for saying that a wave is "transmitted" through a medium are transmission, propagation, spread.
What is a wave ?"Wave is a phenomenon or disturbance in which energy is transferred from one point to another without any direct contact between them." For example: Heat, light and sound is considered as a wave.
Know more about wave here
https://brainly.com/question/3639648
#SPJ2
An is the conducting connection between electrical equipment or an electrical circuit and the earth
Answer:
yujkf
Explanation:
o7u8[
1. Why did Asteroid 2019 OK cause concern among scientists? * The asteroid was not detected until it was extremely close to Earth. It's the largest known near-Earth asteroid ever discovered. The asteroid's path was aimed directly at the moon. The asteroid was too large to be deflected away from Earth
Answer:
The asteroid was not detected until it was extremely close to Earth.
Explanation:
According to data from NASA, the Asteroid named 'Astriod 2019 OK', was detected when it was extremely close to earth with just about an estimated distance of 73,000 kilometers (45,000 miles) from the Earth.
Scientists were concerned at the proximity of this space object to the Earth before it was discovered, and it brought about a cause of concern that since it was not extremely large (estimated 57 to 130 meters wide) it creates a potential for other smaller asteroids to escape detection and struck the earth.
HELP ASAP will give BRAINLIEST!
A driver isn't paying enough attention while he texts and drives, colliding with the parked car in front of him and transferring all of his cars moving force into it.
Which of these does this display? Newton's 1st law, Newton's 2nd law, Newton's 3rd law, Law of Conservation of Momentum, or The Law of Universal Gravitation
Answer:
law of conservation of momentum
Explanation:
For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
A5 pound object is moving horizontally with a speed of 15m/s. How much force is needed to keep the object
moving at 15m/s in the same direction? Explain WHY. You can give your answer as a relative estimate (ex: a small
amount...)
Jose lifts a 24N box with a force of 57N. What is the resulting net force?
Answer:
Jose lifts a 24N box with a force of 57N. What is the resulting net force?
Explanation:
Jose lifts a 24N box with a force of 57N. What is the resulting net force?
Which change to an object would reduce its potential energy by half?
A. Increasing its height to twice its original value
OB. Reducing its mass to one-quarter of its original value
O C. Increasing its mass to twice its original value
O D. Reducing its height to one-half of its original value
Answer:
It is D
Explanation:
Make sure you read the question carefully because people get different variations
Can y’all help me on number 2
Answer:
sure
Explanation:
Answer:
250 times 10= 2,500, squared, the answer is 25,000
Explanation:
force= mass times acceleration, squared means multiply that number again, since 10 is squared you multiply by ten again
True or False?
There are equal numbers of protons and electrons in neutral atoms.
Anybody good in physics topic WAVE?
Answer:
[tex]oh \: yeah[/tex]
Describe the energy transfers of an electron around the circuit when the switch is closed
Answer:
When a switch is closed, electrons move through a circuit from the negative side of a battery to the positive side
Explanation:
Not sure if this helps but, Electrons flow from negative (where they repel each other) to positive (where they are attracted). As electrons flow through a circuit, they need 'something to do'. In many cases, that something is to light a bulb or heat an element, such as an element on a stove. So, the energy of an electron can be converted to heat or light.
Hopefully this helps! :,D