Calculate the momentum when a toy car of mass 140g moves at 5m/s
Answer:
P = 0.7 [kg*m/s]
Explanation:
The amount of linear momentum is defined as the product of mass by Velocity. This way you have the following equation:
P = m*v
P = momentum [kg*m/s]
m = mass = 140 [g] = 0.140 [kg]
v = velocity = 5 [m/s]
P = 0.140*5
P = 0.7 [kg*m/s]
how are acceleration and speed related
Answer:
Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing. Comment on robshowsides's post “Speed is the magnitude of velocity.
Explanation:
hope it helped tee hee
The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration
Answer:
Acceleration = Final velocity - initial velocity / time take
65-35=30 , 30/5=6
Acceleration = 6m s-2
Explanation:
The "Time Bandit" is one of the many fishing vessels from the television series "Deadliest Catch". While searching for crab during one of its crabbing excursions, it travels 15 km north and then 7 km west from its starting position. What was his straight line displacement during this part of its trip? Be careful to read the units I gave you!
Answer:
Displacement = 16.55 km
Explanation:
The straight line displacement can be found by finding the resultant of both the displacements. The displacements given to us are 15 km north and 7 km west. Since, west and north directions are perpendicular to each other. Therefore, the displacements will also be perpendicular and they can be modelled as the rectangular components of resultant straight line displacement. So, the resultant straight line displacement can be found by using Pythagorean Theorem:
Displacement = √[(15 km)² + (7 km)²]
Displacement = 16.55 km
Hence, his straight line displacement during this part of trip will be 16.55 km
A roller coaster car is released from a standing start at the top of a 20.0-m hill. The car rolls down the hill to a point 10.0 m above the ground, then up a second hill to 15.0 m, and then down again to point X at 8.00 m above the ground. Use what you know about the sum of the kinetic and potential energies to find the car's speed at X.
A.
11.7 m/s
B.
12.5 m/s
C.
15.3 m/s
D.
19.8 m/s
Answer:
21.5 i did the assesment
Explanation:
Some students are investigating how resonance works using two tuning forks. Put the steps in the process in the correct order.
1.
Hold the vibrating tuning fork right beside the other one.
2.
The second tuning fork will begin to vibrate at the same rate as the first one.
3.
Strike one tuning fork on the edge of the table to make it vibrate.
Answer:
1. Strike one tuning fork on the edge of the table to make it vibrate.
2. Hold the vibrating tuning fork right beside the other one.
3. The second tuning fork will begin to vibrate at the same rate as the first one.
Explanation:
hope this helps! brainliest would be great also please click thanks button!
can nak ed eye detect ray of all type? why?
Answer:
no
Explanation:
but different animals can
Answer: No, our eyes only see visible light
Explanation:
The n*ked eye can only detect electromagnetic radiation in the wavelength between 400nm-700nm. This is just how our eyes work. On the E&M spectrum, this band of light which we can see is called "visible light" because its the only light we can visibly see. The others forms of radiation must be seen with the use of technology
The power of an earthquake is expressed on a scale called
(a) seismic scale
(b) iron scale
(c) richter scale
(d) large scale
Richter scale
Explanation
Richter Scale - measure of the strength of earthquakesSeismic scale - distance between the earthquakeIron scale - no such thing.large scale - map scale, not related, irrelevant.
Answer:
Richter Scale
Explanation:
Richter Scale is the right answer because Richter Scale is what measures the power of an earthquake. It goes from 0-10. If there was an earthquake which had a magnitude (a level on the Richter Scale) of 4, then, if there was another earthquake which had a magnitude of 5, then the 5 was 10x stronger than 4 on the Richter Scale. That's how it's measured.
These scales... "iron scale, large scale" are NOT at all related to Richter Scale. And, siesmic scales aren't the same thing as Richter Scale.
So hence, your answer is the Richter Scale!
-------------------------------------------------------------------------------------------------------------
If you see someone without a smile, give them one of yours!
Thanks!
Have a great day!
:D
An engineer is trying to determine the height from which she needs to release a 52kg wrecking ball
such that the wrecking ball will be traveling 12.3m/s when it strikes the building at the position
shown. Neglect drag.
The height from which the engineer needs to release the ball is : 11.811 m
Given data:
Mass of wrecking ball = 52 kg
velocity of wrecking ball ( Vf ) = 12.3 m/s
Initial velocity of ball ( Vi ) = 0 m/s
final height ( hf ) = 4.1 m
Determine the height from which the engineer releases the ballApplying the principle of energy conservation
Initial energy = final energy
= 1/2 mV²i + mghi = 1/2 mV²f + mghf ----- ( 1 )
given that Vi = 0 also cancelling out m from both sides
Equation ( 1 ) becomes
= 0 + hi = V²f / 2g + hf
therefore : hi = ( 12.3 )² / 2 * 9.81 + 4.1
= 151.29 / 19.62 + 4.1
= 11.811 m
Hence we can conclude that The height from which the engineer needs to release the ball is : 11.811 m
Learn more about vertical velocity : https://brainly.com/question/13665920
Attached below is the missing image related to your question
How can we describe, model, and explain the material world, and are there limitations?
Answer:· A model is a description of natural phenomenon that scientists can use to make predictions. A good model is both as accurate as possible and as simple as possible, which makes it not only powerful but also easy to understand. However, no matter how good they are, models will almost always have limitations.
Explanation:
1.1
Which of the following pairs can be classified as vectors?
A. Friction and mass
B. Mass and inertia
C. Inertia and weight
D. Weight and friction
Answer:
D
Explanation:
Weight and friction are paired as vectors
A steel piano wire 0.721 m long has a cross-sectional area of 0.00633 cm2. When under a tension of 169 N, how much does it stretch? Young's Modulus for the wire is 2 x 1011 N/m2. Answer in units of mm.
For a steel piano wire, 0.721 m long has a cross-sectional area of 0.00633 cm2. is mathematically given as
de=9.624723*10^{-4}m
What is the length of the wire stretch ?Generally, the equation for the Hooks law is mathematically given as
F/A=Yde/e
Therefore
dl=fe/Ay
de=\frac{169*0.721}{0.00633*10^{-4}*2 x 10^{11} }
de=9.624723*10^{-4}
In conclusion, the wire stretch
de=9.624723*10^{-4}m
Read more about Force
https://brainly.com/question/13370981
1. A dog of mass 5 kg jumps on a table of mass 30 kg. As the dog walks around on the table, what is the average force that the table applies to the dog?
Answer:
50N
The table is managing to keep the dog up, the dog is not moving up or down so the force that the table applies to the dog must be equal to the dogs weight - I draw this conclusion from Newton's 3rd law.
W= mg
W = 5 × 9.8
W = 49N
round to.one significant figure = 50N
The force that the table applies on the dog is required.
The force that the table applies to the dog is [tex]10\ \text{N}[/tex]
m = Mass of dog = 5 kg
g = Acceleration due to gravity is assumed to be [tex]10\ \text{m/s}^2[/tex]
Force is given by
[tex]F=mg[/tex]
[tex]\Rightarrow F=5\times 10[/tex]
[tex]\Rightarrow F=10\ \text{N}[/tex]
Learn more:
https://brainly.com/question/26115859?referrer=searchResults
five examples of elements mixtures and compounds
Answer:
Elements: Hydrogen, Helium, Oxygen, Neon, Nitrogen
Mixtures: Smog, Mud, Cement, Gunpowder, Gasoline
Compounds: Water, Glucose, Carbon monoxide, Carbon dioxide, Methane
Explanation:
Element: any substance that cannot be separated into different substances by ordinary chemical methods.
Mixture: a material made up of two or more different chemical substances which are not chemically bonded.
Compounds: a distinct substance formed by chemical union of two or more ingredients in definite proportion by weight a new antibiotic compound.
Can someone please give me the (Answers) to this? ... please ...
I need help….
Note : Please discard your other answers as they are incorrect. I have personally solved this problem and have attached the appropriate image.
Have a blessed day, if you have any follow-up questions please reach out!
Stay safe!
- Robert
I’m a freshman who doesn’t know about physics, help me out?
list some adaptations you would have to change of daylight only lasted 2 hours.
Answer:
Food and oxygen would eventually become major problems.
We would need HUGE banks of photocells which would be used to charge batteries (or some other energy storing system, liked pumped water)
The batteries would power banks of LED "grow lights" in greenhouses to provide us with food and oxygen.
This would have to be done on a monumental scale, largely to replace the huge quantities of oxygen generated by life in the oceans.
At a distance of 100 km from a small,
electrically charged asteroid, it is found
that there is an electric field of 300 V/m. How much charge does the asteroid
carry?
Answer:
E = K Q / R^2 electric field due to charge Q
Q = E * R^2 / K = 300 N / C * (10^5)^2 m^2 / (9.0E9 nt-m^2/C^2)
Q = 333 C
Constructive interference is when two waves meet at the crest.
True
False
Answer:
True
Hope it will be
And pls mark me as brainlist
What do electrons in the same shell have in common? AThey have the same amount of energy incorrect answer BThey are all positively charged incorrect answer CThey are all made up of atoms incorrect answer DThey all have neutral charges incorrect answer
Answer:
They have the same amount of energy
Explanation:
Electrons are said to be the subatomic particles that move around the nucleus of an atom. These electrons are negatively charged particles that are seen to be quite smaller than the nucleus of an atom.
The electron shells of these atoms are usually being filled from the inside out with the low-energy shells closer to the nucleus being filled before they can go into the much higher-energy shells that are a bit out
The electrons in the same shell have the same amount of energy and the same principal energy level. The correct answer is (A).
An atom's fundamental energy level, commonly referred to as the energy "shell," is the same for electrons in the same shell. The major energy level, which also controls the electron's typical separation from the nucleus, closely correlates to the electron's energy level.
Electrons within the same shell have the same energy level, although they may have different sublevels or orbitals within that shell.
Therefore, The electrons in the same shell have the same amount of energy and the same principal energy level. The correct answer is (A).
To know more about the energy level:
https://brainly.com/question/30546209
#SPJ6
Blank donates its outer electron to the blank atom
3 kg of water (c = 4,186 J /kg°C) is at an initial temperature of 10°C. If 7,700 J of heat is applied, what will be its final temperature? Show all of your work and use the correct units for full credit.
[tex]\bold{\huge{\underline{ Solution }}}[/tex]
Given :-Here , The initial temperature of 3kg of water is 10° CThe heat supplied to 3kg water is 7,700 JThe specific heat of water is 4186 J/kg ° C To Find :-We have to find the final temperature of water .Let's Begin :-Here, we have
Mass = 3 kg Specific heat capacity = 4186 J/kg°CInitial temperature = 10° CHeat applied = 7,700JWe know that,
Specific heat is the heat that is required to increase the temperature of 1 kg or unit mass by 1° C or unit ° CThat is,
[tex]\bold{\red{ C = }}{\bold{\red{\dfrac{ Q}{m{\delta}T}}}}[/tex]
Here, Change in temperature is ΔT that is, Final temperature - Initial temperatureSo,
[tex]\sf{{\delta} T = }{\sf{\dfrac{ Q}{Cm}}}[/tex]
Subsitute the required values,
[tex]\sf{ T2 - 10 = }{\sf{\dfrac{ 7700}{3{\times}4186}}}[/tex]
[tex]\sf{ T2 - 10 = }{\sf{\dfrac{ 7700}{12558}}}[/tex]
[tex]\sf{ T2 - 10 = }{\sf{\cancel{\dfrac{ 7700}{12558}}}}[/tex]
[tex]\sf{ T2 - 10 = 0.61 }[/tex]
[tex]\sf{ T2 = 0.61 + 10 }[/tex]
[tex]\bold{ T2 = 10.61 {\degree} C}[/tex]
Hence, The final temperature of 3kg if 7,700 J of heat supplied is 10.61 °C
17) Which wave carries the most energy?
Answer:
C.
Explanation:
the waves that have the shortest wavelength are gamma rays, and thus they are the most energetic because they must also have the highest frequency.
what does it mean to view something from a-frame of reference?
Which best illustrates the way in which radiation transfers thermal energy?.
Answer:
Before coming into any conclusion, first we have to understand radiation and conduction.
Radiation is the type of mode of transmission of thermal energy in which the radiations travels through space or vacuum without heating the intervening medium.
On the other hand, conduction is the mode of transmission of heat from one body to another body which are in contact with each other or hotter part to the colder parts of a body without any transport of material particle.
Heat always flows from a body at higher temperature to a body at a lower temperature in absence of external work done. The reverse is not possible in normal case.
Heat is flowing from hot body to cold body, and there is no direct contact between the body. It explains correctly the mode of transmission of thermal energy through the process of radiations.
how are force and mass related
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Suppose an electric power company in your area charges $0. 06/kwh. of you charged the same amount for the power you devolp climbing stairs, how kuch money would you earn by climbing stairs for 1h
Based on the charge of power expended per kwh, the amount earned is calculated from the power developed in climbing the the stairs for 1 hour and the charge per kWh.
What is power?Power is defined as the time rate at which work is done.
Power = work done/timeThe power developed in climbing a set of stairs is calculated as follows:
Power = mgh/twhere;
m = mass in Kgg = acceleration due to gravity = 9.8 m/s^2h = height in meters t = time in secondsFor 1 hour, the power developed will be the multiplied by 3600 seconds and divided by 1000.
The value is them multiplied by $0.06.
Therefore, amount of money depends on the power developed in climbing the the stairs for 1 hour and the charge per kWh.
Learn more about power at: https://brainly.com/question/24858512
How far does a plane fly in 10.0 s while its velocity is changing from 175 m/s to 105 m/s at a uniform rate of
acceleration?
Answer:
1650 meters
145=75+a.15
Answer:
1400 m
Explanation:
Given:
v₀ = 175 m/s
v = 105 m/s
t = 10.0 s
Find: Δx
Δx = ½ (v + v₀) t
Δx = ½ (105 m/s + 175 m/s) (10.0 s)
Δx = 1400 m
If one object is bigger than another, does that always mean it is heavier?
Answer:
The expectation that a larger object will feel heavy is presumably caused by the fact that larger objects generally contain more material and consequently have a larger mass than smaller objects. When, in contrast, the two objects have the same mass, an illusory heaviness difference occurs.
Explanation:
sorry if this is wrong
Which force is represented by the arrow at A?
A) Force of Friction
B) Force of gravity
C) Normal Force
D) Tension Force
Which force is represented by the arrow at A?
B) Force of gravityLet us understand the situation first and then we will understand which type of force is represented by arrow A
The line to which arrow A is being touched is the ground and the block is being slid down a slope.The arrow A is representing the force that is being applied by the earth on the block and that force is Gravitational Force. So, Option B is the correct choice!!~