Answer:
1. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.
PLZ MARK BRAINLIEST THANK AND FIVE STAR:)
Answer:
a car moving 40mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.
if you need any more info just dm me
If an engine can produce 670 J of energy in 1 min, how many watts can it output?
Answer:
11.2Watts
Explanation:
Given parameters:
Energy produced by the engine = 670J
Time taken = 1min = 60s
Unknown:
Number of watts it can output = ?
Solution:
This problem entails finding the power of the engine.
Power is the rate at which work is being done.
So;
Power = [tex]\frac{Work done }{time}[/tex]
Power = [tex]\frac{670}{60}[/tex] = 11.2Watts
Billy is driving a bumper car for 5 minutes. In this time, Billy crashes into three other cars.
The first car is carrying another small child, the second is carrying a large adult, and the third is empty. Each car is sitting still when Billy hits it at full speed. Place the crashes in order of how much force Billy feels, from smallest to largest.
empty car
large adult
small child
<
Answer:Its empty car, small child, and then adult.
Explanation:
i took it
Answer:
Its empty car, small child, and then adult.
Show the steps im confused.
The answer is 14 m/s
Answer:
14 m/s
Explanation:
KE=1/2mv^2
5880J= 1/2(60kg)v^2
5880J=(30)(V^2)
5880/30=V^2
196=v^2
square root of 196 is 14
When we stretch a spring, which two factors affect how much elastic
potential energy is stored in it
PLEASE HELPPPPPPPPPP I WILL GIVE YOU BRAINLIEST Catalina's class wants to determine if boys or girls recycled more paper each day. They set up separate recycling bins in the classroom and labeled them "Boys" and "Girls." The students then placed their paper items in the correct bins. Which of the following should the students do each day before emptying the bins?
Answer:
what are the answer choices
Explanation:
i dont know the choices so i say count the stuff they recycle, and add the score to the days before.
Find the electric field E⃗ (r⃗ )E→(r→)E_vec(r_vec) inside the sphere (for rrr< aaa) in terms of the position vector r⃗ r→r_vec. Express your answer in terms of r⃗ r→r_vec, rhorhorho (Greek letter rho), and ϵ0ϵ0epsilon_0.
Solution :
Using the Gauss law, the electric field intensity of a sphere is given by :
[tex]$E. 4 \pi r^2 = \frac{Q_{enc}}{\epsilon_0}$[/tex]
[tex]$E = \frac{Q_{enc}}{4 \pi r^2 \epsilon_0}$[/tex]
Now the enclosed charge inside the sphere (r<a) is
[tex]$Q_{enc}= \rho V$[/tex]
[tex]$Q_{enc}= \rho \left( \frac{4}{3} \pi r^3 \right)$[/tex]
Hence, the electric field intensity becomes as follows :
[tex]$E= \frac{\rho \left(\frac{4}{3} \pi r^3\right)}{4 \pi \epsilon_0 r^2}$[/tex]
[tex]$E =\frac{\rho r}{3 \epsilon_0}$[/tex]
Thus, the electric field inside the sphere is given by :
[tex]$\vec {E} = \frac{\rho \vec{r}}{3 \epsilon_0}$[/tex]
The time for a sound wave to travel between two people is 0.80 s,
The people are 256 m apart
Calculate the speed of sound in air.
Answer:
Explanation:
Using the below formula
Speed of sound = ( distance between observers) *2/(total time taken)
Now putt the given values ,
time taken = 0.80 sec
distance = 256 m
hence
V of sound= 256*2/0.80
V of sound = 640 m/sec
please help me ;3 (ALSO REMEMBER IT SAYS SELECT TWO)
Answer:
B and C
Explanation:
It is a reaction between a component(chemical reaction).
The Washington monument in our nations capital is 169 m high. What would be the speed of the penny as it hit the ground?
what is the foemula for this problem
A 1.5 kg ball is thrown at 10 m/s. What is the ball's momentum?
Answer:
[tex]\boxed {\boxed {\sf 15 \ kg*m/s}}[/tex]
Explanation:
Momentum is the product of mass and velocity.
[tex]p=m*v[/tex]
The mass of the ball is 1.5 kilograms and the velocity is 10 meters per second.
[tex]m= 1.5 \ kg \\v= 10 \ m/s[/tex]
Substitute the values into the formula.
[tex]p= 1.5 \ kg* 10 \ m/s[/tex]
Multiply.
[tex]p=15 \ kg*m/s[/tex]
The momentum of the ball is 15 kilogram meters per second.
Answer:
15 kg m/s
Explanation:
[tex]p = mv \: = 1.5 \times 10 = 15 \: kgm {s}^{ - 1} [/tex]
A bag weighing 20 N is pushed horizontally a distance of 35 m across a
level floor by a force of 10 N, How much work is done on the bag in
Joules? W=Fd *
Answer:
350J
Explanation:
Given parameters:
Weight of bag = 20N
Distance moved horizontally = 35m
Force applied = 10N
Unknown:
Work done on the bag = ?
Solution:
Work done is the force applied to move a body through given distance.
Work done = Force applied x distance
So;
Work done = 10 x 35 = 350J
Someone please help me! Please help
Answer:
Explanation:
thumbs down
thumbs up
thumbs up
thumbs down
thumbs up
The more energy, the hotter the object. And the shorter the wave
length the more energy there is.
True
False
Help me plssss!!
Answer:
that is true
Explanation:
Answer:
True.
Explanation:
Energy can be given off by heat, a lot of heat can be a sign of a lot of energy. And a shorter wavelength the more energy, which I've learned in school.
What was the name of the first oil well in the UAE?
A.Murban
B.ADNOC
C.Murhabba
D.OLPEC
Answer:
B.ADNOCExplanation:
the Abu Dhabi Petroleum Company
The first commercially viable oil discovery was made at Bab in 1960. In 1962, the company was renamed the Abu Dhabi Petroleum Company. Exports began to flow from the Jebel Dhanna terminal on December 14, 1963.
Answer:
hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
Which equation should be used to calculate the speed of a wave?
speed = frequency x wavelength
speed = frequency x hertz
speed = period x wavelength
speed = period x hertz
The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
What is the formula for wave speed?The speed of a wave is calculated by the equations: V = λ . f or V = λ/T, and the unit of measurement is m/s. This speed depends on the medium: in gaseous media, the speed is lower than in solid media.
See more about wave speed at brainly.com/question/10715783
The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
What is Speed of wave?Wave speed is the movement of a progressive wave, which is an energy-moving disturbance that takes the shape of an oscillation and moves from one place to another.
The wavelength and frequency of a wave both affect its speed. A wave's speed is a crucial factor because it enables us to estimate how quickly the wave will disperse in the medium, which is the substance or material that will carry it.
This is the water in the case of ocean waves and the air in the case of sound waves. The kind of wave and the physical properties of the medium in which it is flowing also affect a wave's velocity.
Therefore, The equation should be used to calculate the speed of a wave is speed = frequency x wavelength.
To learn more about Wavelength, refer to the link:
https://brainly.com/question/30607075
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Is a violin and battery potential energy?
Explanation:
In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The battery is storing the energy but give it something to power and it'll give its energy to the object and a violin strings are like ruber band and if you play the violin it releases a new type of energy sound energy.
HELP PLS 100 POINTS TAKING TEST RN
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30
miles per hour. Which of the following is NOT true?
You and the car are accelerating.
Your speed is constant.
Your velocity is constant.
Your acceleration is constant.
Answer:
sorry I hate when people press your question and answer with a fake answer for points, however you said it was 100 points and it's not even close lol but it is "your speed Is constant" that is not true
How does the sun maintain its high temperature and energy output?
Answer:
The core of the sun is the region that extends from the center to about 20–25% of the solar radius. It is here, in the core, where energy is produced by hydrogen atoms (H) being converted into nuclei of helium (He). ... The core is the only part of the sun that produces an appreciable amount of heat through fusion.
Explanation:
I got you
By not running out of fuel (Hydrogen).
Rest assured ... When the sun runs low on Hydrogen, it'll go through several complex changes, and it'll end up at much much lower temperature, with much much lower energy output.
what would the answer be
Answer:
D
Explanation:
The density has a formula of d = m / V.
The volumes are given as the same.
The density will be
d_lead = 113/ V
d_aluminum = 27/V
It does not matter for this question what the volume actually is. Just note that the value of the volume is the same for each ball.
A: incorrect. If the volumes are the same, the density is not the same because the masses are different.
B: incorrect. If the density of the two balls was less than water, the two balls would float. Never going to happen unless the balls are thin shells.
C: incorrect. The exact opposite is the answer.
D: Correct. This is the answer.
Which is a disadvantage of storing data digitally?
A.The parts of devices that store data are unstable compared to analog storage.
B. Other people can access personal data when a virus is copied with the data.
C. Noise makes digital data unreliable when copied.
D. The quality of copies stays the same as more copies are made.
Answer:
I thinks it’s b sorry if it didn’t help
Explanation:
One of the disadvantage of storing data digitally is that, other people can access personal data when a virus is copied with the data. Hence, security of data cannot be ensured.
What is digital storing?Nowadays there are many technological ways to store our credentials and essential documents. These data can be stored in virtual space such as in computers phones like electronic gadgets.
Compared to the conventional storage methods or paper format, digital storage is easy and fast easily accessible from anywhere in any format and can be shared. These data cannot damaged as paper document.
However, the digital storing have some drawbacks. Sometimes these data goes insecure and other people can access personal data when a virus is copied with the data.
Find more on digital storage:
https://brainly.com/question/13150495
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Which is a disadvantage of storing data digitally?
A.The parts of devices that store data are unstable compared to analog storage.
B. Other people can access personal data when a virus is copied with the data.
C. Noise makes digital data unreliable when copied.
D. The quality of copies stays the same as more copies are made.
Answer: its B I jus took it
Explanation:
Describe some things that Ye-Jun could do each day to increase the healthiness of his lifestyle.
Answer:
Eat more healthy foods and keep more active.
Explanation:
Which object has a stronger
gravitational pull to the Earth,
a bicycle or an elephant?
Calculate the momentum of a boat with a mass of 95kg moving at 2m/Ss
Answer:
190 kg m/s
Explanation:
Momentum = Velocity × Mass
→ Substitute in values
2 × 95 = 190 kg m/s
The momentum of the boat of mass 95 Kg moving at 2 m/s will be 190 Kg m/s.
What is Momentum?Momentum is defined as the product of mass of velocity. Momentum is a vector quantity. Mathematically, we can write momentum as -
p = mv
It is also the measure of the impact force imparted by any moving object, when it comes in contact with some other body.
Given is a boat with a mass of 95 Kg moving at 2 m/s.
Mass [m] = 95 Kg
Velocity [v] = 2m/s
We can write the momentum as -
p = mv
Substituting values, we get -
Momentum [p] = 95 x 2 = 190 Kg m/s
p = 190 Kg m/s
Therefore, the momentum of the boat of mass 95 Kg moving at 2 m/s will be 190 Kg m/s.
To solve more questions on Momentum, visit the link below-
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What is the action and reaction if a person takes a step back
Answer:
action is backward and i guess reaction is sad
plzzz helpp mee guysss!!! plzzzz
A car is traveling north on the interstate. They cover 645 miles in 9 hours. What is the car's average velocity?
Answer:
ycuvivxuduviguv8vifudsyfucuv
I had to show a screenshot of this because brainly thinks it detects a bad word
which statements describe kinetic and potential energy? check all that apply.
Answer:
ACDE
Explanation:
Energy is generally described as the ability to do work by a body. There are two main forms of energy which are the kinetic energy and the potential energy.
Other energy forms stems from these two energy types.
Potential energy expressly deals with the position of a body. It is mathematically given as:Potential energy = mass x acceleration due to gravity x height
It is the energy stored based on the position of particles within a mediumThese description satisfies options A, C
Kinetic energy is the energy due to the motion of body. It is mathematically given as:Kinetic energy = [tex]\frac{1}{2}[/tex] x mass x velocity²
Also, kinetic energy is directly proportional to the velocity of a body.The description satisfies DE
examine this diagram of the human heart. what is the structure indicated by the arrow?
I unfortunately can't post a picture because I am uploading this question from my computer but I will do my best to describe the image.
It's a normal picture of a human heart, but there is an artery going down and there is an artery going to the right, I need the name of the artery going to the right because that is what the arrow is pointing at.
A. The Pulmonary Artery
B. The Pulmonary Vein
C. The Superior Vena Cava
D. The Aorta
Answer:
Right coronary artery
Explanation:
Right coronary artery (RCA). The right coronary artery supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm.
Answer:
A.) Pulmonary artery
Explanation: Someone told me Aorta and i got it wrong....
2. Which animal is a primary consumer in the Ethiopian Highlands?
walia ibex
tiger
black lion
prairie dog
Answer: Wallia Ibex
Explanation: Black lions and tigers are not primary consumers. However, the Wallia Ibex is a primary consumer, hope it helps :D.
