Answer:
For instance, an immobile object located at some height above the ground has potential energy. If the object starts to fall, its potential energy is converted to motion or kinetic energy. The heavier and the higher the object is, the more potential energy it will have. Transfer of thermal energy via conduction is aided by vigorously vibrating particles in a medium that has gained energy through heating.
Explanation:
To make a quick stop, when a driver puts his or her feet on the brakes, at that moment, some of the motion energy gets modified to sound energy and thermal energy. This is one of the examples, when the motion energy of the object changes, resulting in some other change in energy as well.
• The other term for motion energy is mechanical energy. It is the energy stored within the moving objects. When the object moves faster, more amount of energy storage takes place.
• Motion energy is the sum of the kinetic and potential energy within an object, which is used to perform some kind of work.
How many miles did a plane travel if it flew 455 miles per hour in 3 hours? What formula did you have to use?
Answer:
1,365 miles
Explanation:
i multiplied 455 x 3 because it traveled 455 miles an hour for three hours.
What is Kinetic Energy based on?
A.
Height
B.
Force
C.
Motion
D.
Time
Answer:
C. Motion
Explanation:
Hope this helps!
What is the student's kinetic energy at the bottom of the hill if he is moving
at 18 m/s?
Variables:
Show Work
Answer:
KE = 10530 J or 10.53 KJ
Explanation:
The formula for kinetic energy is KE = 1/2 mv^2
Let's apply the formula:
KE = 1/2 mv^2
KE = 1/2 (65kg) (18m/s)^2
KE = 10530 J or 10.53 KJ
What does it mean if a galaxy gives off light that has been shifted toward the red end of the electromagnetic spectrum?
Answer:
the galaxy is moving away from us and the magnitude of the displacement gives the value of the relative velocity
Explanation:
The wavelength and frequency of light is affected by the relative motion of the Source (galaxy) and the observer (us on Earth); when the shift is towards the red it indicates that the bodies are moving away from each other.
Consequently the galaxy is moving away from us and the magnitude of the displacement gives the value of the relative velocity
I’m NC the wind is blowing from the north. If the wind changes direction and begins to blow from the south, what will most likely result.
NC means North Carolina.
Answer:
The temperatures will increase.
Explanation:
What will happen is that the temperature will increase. This is because, in wind direction and weather forecasting, a wind that shifts from the south means that warmer air/temperatures are approaching whereas a wind shift from the north implies that cooler air/temperatures are approaching.
We measure forces using the unit _________________ (AND). This is because mass is in kilograms (kg) and acceleration is in m/s2 . It describes the force required to move one kilogram of mass at one meter/second/second.
Answer:
Newtons
Explanation:
Force is measured in Newtons
A force of 49 Newtons is applied to a rock, which causes it to be lifted 2 meters in 5 seconds. How much power is exerted during this time?
Select one:
9.8 W
19.6 W
56.4 W
98 W
Answer: 19.6 watts
=================================================
Explanation:
power = (change in work)/(change in time)
p = w/t
work = force*displacement
w = f*d
So we can say:
p = (f*d)/t
We know the following
f = 49 = applied forced = 2 = displacementt = 5 = change in timeLeading to...
p = (f*d)/t
p = (49*2)/5
p = 98/5
p = 19.6 watts
Side note: 1 watt is equal to 1 joule per second
Explain the difference between transverse and longitudinal waves.
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil up and down. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced upwards and downwards. In this case, the particles of the medium move perpendicular to the direction that the pulse moves. This type of wave is a transverse wave. Transverse waves are always characterized by particle motion being perpendicular to wave motion.
A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil left and right. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced leftwards and rightwards. In this case, the particles of the medium move parallel to the direction that the pulse moves. This type of wave is a longitudinal wave. Longitudinal waves are always characterized by particle motion being parallel to wave motion.
A sound wave travels at 340 m/sec and has a wavelength of 2.5 meters. Calculate its frequency and period.
Answer:
136Hz
0.0074s
Explanation:
Given parameters:
Velocity of the wave = 340m/s
Wavelength = 2.5m
Unknown:
Frequency and period = ?
Solution:
To solve this problem, we use the wave velocity equation;
V = F ∧
V is the velocity
F is the frequency
∧ is the wavelength
Let us find the frequency
340 = F x 2.5
F = 136Hz
Period is the inverse of frequency;
Period = [tex]\frac{1}{136}[/tex] = 0.0074s
What does water turn into when you heat it up? Worth 10 brain things
the answer is water vapor (vaporization is the process)
Answer:
Steam (or water vapor)
Explanation:
this is only worth 5 points not ten- uh anyways hope this helped?
Need help on number 5 and 6
Answer:
jowieahudsfnkdmlew2l,poeq3riugjnkfmdko
Explanation:
Answer:
b and c
Explanation:
hopes this helps i took the test.
Tasha would like to work in a Securities and Protective Services job. Which qualifications would she need to succeed? O observational skills, critical thinking, and physical strength O knowledge of fire hazards, courage, and driving skills ability to challenge suspicious people, multi-tasking skills, and driving skills understanding of legal documents, integrity, and knowledge of laws
Answer:the answer is letter D
Explanation:
Any object or agent (biological, chemical, radiological, and/or physical) that has the potential to harm people, animals, or the environment is considered a hazardous material.
What are Hazardous material?This may be the result of the material's own properties or its interactions with other substances. The U.S. Environmental Protection Agency (EPA), the U.S. Occupational Safety and Health Administration (OSHA), the U.S. Department of Transportation (DOT), and the U.S.
Nuclear Regulatory Commission are primarily responsible for defining and enforcing laws and regulations related to hazardous materials (NRC). Each defines "hazardous substance" differently.
This includes chemicals such as carcinogens, irritants, corrosives, toxic agents, sensitizers, agents that damage the lungs, skin, eyes, or mucous membranes; chemicals that can combust, explode, are flammable, oxidizers, pyrophorics, unstable-reactive or water-reactive.
Therefore, Any object or agent (biological, chemical, radiological, and/or physical) that has the potential to harm people, animals, or the environment is considered a hazardous material.
To learn more about Hazardous material, refer to the link:
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A rectangle box was measured with a length of 4cm, width 2cm, and height 2cm. What is the volume of the box?
Answer:
volume is 64
Explanation:
2×2×4×4
=64
Answer:
[tex]V = 16\ cm^3[/tex]
Explanation:
The Volume of a Rectangular Prism
A rectangular prism is also called a rectangular box and has three dimensions all perpendicular to each other.
Given a rectangular prism of length L, width W, and height H, the volume is calculated as:
V = WLH
We are given the dimensions of a rectangular box: L= 4 cm, W = 2 cm, H = 2 cm. Computing the volume:
V = 2 cm * 4 cm * 2 cm
[tex]\mathbf{V = 16\ cm^3}[/tex]
"Force is applied to an object and the object is moved over a distance in the same direction of the applied force" is the definition of (2 points)
a
balanced force
b
gravitational force
c
power
d
work
Answer:
A. Balanced force
Explanation:
Wall-E the robot is resting when he randomly explodes into two pieces that fly off in opposite directions. His head has a mass of 0.75 kg and flies off to the right with a velocity of 75 m/s. If his body has a mass of 6.2 kg, what was its velocity after the explosion?
______________m/s (nearest hundredth)
Answer:
The body flies off to the left at 9.1 m/s
Explanation:
Law Of Conservation Of Linear Momentum
It states the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is
P=mv.
If we have a system of bodies, then the total momentum is the sum of the individual momentums:
[tex]P=m_1v_1+m_2v_2+...+m_nv_n[/tex]
If a collision occurs and the velocities change to v', the final momentum is:
[tex]P'=m_1v'_1+m_2v'_2+...+m_nv'_n[/tex]
Since the total momentum is conserved, then:
P = P'
In a system of two masses, the equation simplifies to:
[tex]m_1v_1+m_2v_2=m_1v'_1+m_2v'_2\qquad\qquad[1][/tex]
Wall-E robot is initially at rest, its two parts together. His head has a mass of m1=0.75 kg and his body has a mass of m2=6.2 kg. Both parts have initial speeds of zero v1=v2=0.
After the explosion, his head flies off to the right at v1'=75 m/s. We are required to find the speed of his body v2'. Solving [1] for v2':
[tex]\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2}[/tex]
Substituting values:
[tex]\displaystyle v'_2=\frac{0.75*0+6.2*0-0.75*75}{6.2}[/tex]
[tex]\displaystyle v'_2=-9.1 \ m/s[/tex]
The body flies off to the left at 9.1 m/s
The acceleration of an object would increase if there was an increase in:
A.mass of the object
B.force on the object
C.inertia of the object
D.friction in the object
Answer:
Its either B or A
Explanation:
why do engineers study momentum
Engineers study momentum because momentum is important. Momentum is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction.
Answer:
Because...
Explanation:
Engineers are a big impact to America as well as the whole earth they need to study momentum because it helps and is main parts of being an engineer without knowing or studying what momentum I you will Have a very hard time
An airplane accelerates from a speed of 88m/s to a speed of 132 m/s during a 15 second time interval. How far did the airplane travel during the time interval?
Answer:
[tex]1650\:\mathrm{m}[/tex]
Explanation:
We can use the following kinematics equations to solve this problem:
[tex]v_f=v_i+at,\\{v_f}^2={v_i}^2+2a\Delta x[/tex].
Using the first one to solve for acceleration:
[tex]132=88+a(15),\\15a=44,\\a=\frac{44}{15}=2.9\bar{3}\:\mathrm{m/s^2}[/tex].
Now we can use the second equation to solve for the distance travelled by the airplane:
[tex]132^2=88^2+2\cdot2.9\bar{3}\cdot \Delta x,\\\Delta x= \frac{9680}{2\cdot2.9\bar{3}},\\\Delta x =\fbox{$ 1650\:\mathrm{m}$}[/tex](three significant figures).
What does it mean when wave
crests are close together?
A. the higher the amplitude
B. the lower the amplitude
C. the shorter the wavelength
D. the longer the wavelength
Answer: C
Explanation:
Waves with a higher frequency have crests that are closer together, so higher frequency waves have shorter wavelengths.
Help!! ASAP plz
Determine the mass of the object below to the correct degree of precision.
358.3g
358.20g
358.30g
358.2g
If a spring constant of 128N/m is compressed by 0.18 m , how much potential energy is the spring?
Answer:
2.1J
Explanation:
Given parameters:
Spring constant = 128N/m
Compression = 0.18m
Unknown:
Potential energy of the spring = ?
Solution
The potential energy of the spring is the elastic potential energy within the spring.
To solve this;
Elastic potential energy = [tex]\frac{1}{2}[/tex] k e²
k is the spring constant
e is the compression
Now;
Elastic potential energy = [tex]\frac{1}{2}[/tex] x 128 x 0.18² = 2.1J
a person walks 60.0m and then walks 130m. what is the persons displacemnet if they walk east then west
Answer:
190
Explanation:
add because your looking for the Miles
When a person walks 60.0m and then walks 130m then the displacement of the person would be 70 meters if he first walked east and then west.
What is displacement?An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.
As given in the problem a person walks 60.0m and then walks 130m and if he first walks east then west then we have to find the displacement.
Displacement = final position -initial position
Lets us consider eastward as positive direction,
displacement = 60 - 130
= -70 meters
The negative sign represents the displacement would be in a westward direction.
Thus, If a guy initially went east and then west, his displacement would be 70 meters when he traveled 60.0 meters and then 130 meters.
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Is the formula for acceleration, A = change in velocity / change in time?
Answer:
cant see to find the answer sorry :( i tried :( good luck !! youll do great <333
Explanation:
What is happening to the average kinetic energy of the molecules in a pot of water when it is heated on a stove? Explain your answer.
Answer:
Explanation:
The average kinetic energy of molecules in a pot increases when it is heated on a stove . The heat energy is spent to decrease the intermolecular attractive force . The result is increase in kinetic energy due to increase in the velocity of molecules
formula for kinetic energy of one mole of a monoatomic gas
= 3/2 RT
when temperature increases , kinetic energy increases .
The potential difference across a piece of wire is 2.1 v the current in the wire is 0.30 a calculate the resistance of the wire in ohms
Answer:
7ΩExplanation:
Given:
V = 2.1 v
I = 0.30 A
R = Unknown
Solution:
R = V / I
= 2.1V / 0.30A
= 7Ω
Answer:
7Ω is the resistance of the wire in ohms
The resistance of the wire will be 7 ohms. Resistance is the antagonism strength shown in the discharge of the electric current.
What is resistance ?Resistance is the opposition force offered in the flow of the electric current. It is denoted by R.It s unit is ohms.
The given data in the problem is;
V is the potential difference = 2.1 v
I is the current = 0.30 A
R is the resistance =?
According to Ohm's law resistance is the ratio of the voltage to the current.
[tex]\rm R = \frac{V}{I} \\\\ \rm R = \frac{2.1}{0.30} \\\\ \rm R = 7 \ ohm[/tex]
Hence the resistance of the wire will be 7 ohms.
To learn more about the resistance refer to the link;
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the brakes applied to a car produces an acceleration of 6m/s^2 in the opposite direction to the motion. if the car takes 2s to stop after the application of brakes. calculate the distance it travels during this time .
Answer:
acceleration= -6ms^-2
Explanation:
[tex]v = u + at \\ 0 = u + ( - 6 \times 2) \\ u = 12m {s}^{ - 1} [/tex]
distance
[tex]s = ut + \frac{1}{2} a {t}^{2} \\ s = 12 \times 2 + \frac{1}{2} \times ( - 6) \times {2}^{2} \\ s = 12m[/tex]
therefore distance = 12mIndiana Jones is being chased over the rooftops of Marseilles by some random villain. He looks ahead and sees that there is a 7 meter gap between this rooftop, which is 25 meters above the ground, and the next, which is 19 meters above the ground. He gathers up all his strength and runs and leaps from the higher roof to the lower. How fast must he run so he doesn't go plummeting into the street below? *
5 points
Answer:
30 mph
Explanation:
What is the potential difference if the current is 2A and the resistance is 0.5Ω?
Answer:
1A
Explanation:
Given parameters:
Current = 2A
Resistance = 0.5Ω
Unknown:
Potential difference = ?
Solution:
To solve this problem, we use ohm's law which expressed below:
V = IR
V is the potential difference
I is the current
R is the resistance
Now insert the parameters and solve;
V = 2 x 0.5 = 1A
Which one doesn't belong in the group? oxygen, sulfur, selenium,
tellurium *
Your answer
This is a required question
borons
Ask Questions Action and reaction force pairs are all around you, but they aren't always obvious. Write down
a question about a situation in which you can't identify what force pairs are at work.
Answer:
Writing with a pencil. The pencil pushes on the paper. The paper pushes on the pencil.
Explanation:
Newton's third law.