Answer:
K.E = 400
Explanation:
Given the following data;
Mass = 0.02kg
Velocity = 200m/s
To find the kinetic energy;
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Substituting into the formula, we have;
[tex] K.E = \frac{1}{2}*0.02*200^{2}[/tex]
[tex] K.E = \frac{1}{2}*0.02*40000 [/tex]
[tex] K.E = 0.02*20000 [/tex]
K.E = 400
A 3kg object moving at 4 m/s encounters a 20 N resistive force over a duration of 0.20 seconds. The impulse experienced by this object is _____
Answer:
the impulse experienced by this object is 4 Ns
Explanation:
Given;
mass of the object, m = 3 kg
velocity of the object, v = 4 m/s
resistive force, F = 20 N
duration of impact, t = 0.2 s
The impulse experienced by this object is calculated as follows;
J = F x t
J = 20 x 0.2
J = 4 Ns
Therefore, the impulse experienced by this object is 4 Ns
Cuales podrian ser las causas y consecuencias del aumento de problemas de salud mental en la población chilena
Explanation:
CAUSAS:
-El gobierno de chile ha destinado el 2% de sus recursos de salud pública para tratar los problemas de salud mental,lo cual es insuficiente debido a la alta demanda de pacientes que requieren atención especializada. Según la OMS (organización mundial de la salud) , cada gobierno debería destinar al menos el 5% de sus recursos para tratar este tipo de patologías o enfermedades mentales como la depresión,la ansiedad u otros trastornos bipolares
- El personal capacitado para tratar este tipo de enfermedades es muy escaso.
- Muchos de los chilenos que padecen este tipo de enfermedades no buscan ayuda inmediata, algunos recurren al alcohol o a los vicios como el cigarrillo o la marihuana , pensando que lograrán calmar la ansiedad o sus preocupaciones pero en realidad sucede lo contrario, aumentan la depresión y la ansiedad.
-Los problemas sociales, la crisis económica y el aumento de la pobreza así como el limitado acceso que tiene la población pobre chilena a un buen sistema de salud integrado,genera un significativo aumento de problemas de salud mental en especial en la población pobre o más desfavorecida del país.
CONSECUENCIAS:
Debido a los problemas de salud mental las incapacidades laborales han aumentado, afectando la economía del país.
Debido a la falta de tratamiento ,el suicidio y otras enfermedades como la esquizofrenia han aumentado. De igual manera la violencia intrafamiliar se ha incrementado e inclusive hasta los niños están empezando a sufrir este tipo de trastornos o enfermedades mentales,lo cual está afectando su desempeño escolar.
define the artificial silk?
Answer:
Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce.
Explanation:
Answer:
Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce. Frequently, "artificial silk" is just a synonym for rayon. When made out of bamboo viscose it is also sometimes called bamboo silk.
A high-temperature gas is compared to the same gas at lower temperature. Which of the following statements is true?
A. Every molecule in the high-temperature gas is moving faster than every molecule in the low-temperature gas.
B. The average molecular speed in the high-temperature gas is faster than the average molecular speed in the low-
temperature gas.
C. Both A and B are true.
D. Neither A nor B is true.
Answer:
I think it is C
Explanation:
If the temperature of a gas increases, the gas particles have a higher average speed as they gain kinetic energy. They collide more frequently with the walls of the container, which produces a bigger pressure.
A Cathode of initial mass 10.00g weigh to 10.05g
after a Current of SA passes through the voltmeter of 10 minutes - Calculate the E.C.E of the metal deposed
Answer:
i'm sorry i'm not a physics student
While traveling along a highway a driver slows from 31 m/s to 15 m/s in 8 seconds. What is the automobile’s acceleration? (Remember that a negative value indicates a slowing down or deceleration.)
Answer:
The automobile's acceleration in that time interval is -2 m/s^2
Explanation:
The acceleration is defined as the rate of change of the velocity.
The average acceleration in a given lapse of time is calculated as:
A = (final velocity - initial velocity)/time.
In this case, we have:
initial velocity = 31 m/s
final velocity = 15 m/s
time = 8 seconds.
Then the average acceleration is:
A = (15m/s - 31m/s)/8s = -2 m/s^2
Using the information provided in the table, which statement BEST describes the object's motion?
Answer:
the velocity is decreasing therefore acceleration is negative
1. Which object is farthest from the origin at t=2sec
A.a B. b
C. they are the same location at t=2sec
D. they are the same distance from the origin , but in opposite direction
2. Which object moves with constant non-zero acceleration
A. A C. both a and b
B. B. D. neither A and B
3. Which object is in its initial position at t=2sec?
A. A C. both a and b
B. B D. neither A and B
Help me ppppppppp
Answer:
that one i know only pe not that sorry again
Tammy is a forensic investigator examining a body at a crime scene. She notes that the body is stiff but still flexible. What does she know about the time of death?
Answer:
It happened less than 8 hours ago.
Explanation:
Over the first eight hours, the body begins to stiffen but is still flexible.
any tips for an ollie ?
Answer:
skateboard mid-ollie is being actively steered. This is exactly what makes doing an ollie so hard. It's not enough to get the skateboard up into the air - you also have to steer it while it's in the air. You should keep your hands up in the hair a bit to help with balance, scrunch your legs a bit down to have a proper and effective jump. wear nee pads incase you dont fix the landing. Practice jumping on ur skate board tho, if u jump at it without knowing much youll just get hurt.
Explanation:
i know this is easy but i’m am just not sure
Answer:
kinetic energy
Explanation:
vinegar and baking soda are composed of atoms which react to each other when mixed therefore they convert the potential energy inti kinetic energy.
A 5kg object is moving downward at a speed of 12m/s. If it is currently 2.6m above the ground, what is its kinetic energy?
Answer:
360J
Explanation:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.
You have been offered an admission to a senior high school to persue a programme you like. Write a letter to the headteacher of your former school stating at least two reasons why you are happy with the programme you have been offered in 250 words.
Answer:
Find the letter below.
Explanation:
1237 Richmond Avenue,
Houston, Texas,
U.S.A.
3rd May, 2021.
The Principal,
Carnegie Vanguard High School,
Houston, Texas,
U.S.A.
Dear Sir,
APPRECIATION FOR THE ADMISSION OFFER IN YOUR SCHOOL
I humbly write this letter to express my sincere appreciation for the offer of admission in your highly esteemed institution of learning. The admission letter states that I was admitted to pursue a programme in Computer Science and this is a source of great delight for me. The opportunity is a unique one because I stand a great chance of acquiring deeper knowledge of programming software that will prove invaluable to me in my future career.
Over the years, I have been particularly thrilled with all the inventions that have been made possible with information technology and programming of many useful software. These inventions have made life a lot easier, hence my interest in getting the required knowledge that will enable me to contribute my quota to the society.
This programme will also afford me the opportunity to relate with seasoned professionals in the field of Information Technology. When in contact with these professionals, I hope to ask them several questions on programming, the technicalities involved in it, and what is obtainable in the real-world scenario. Armed with these pieces of information, I believe that the programme will shape me to be an excellent professional that will be useful to the society.
Once again, thank you for this very special opportunity. I hope to fully maximize the privilege.
Yours Sincerely,
Jessica Liam.
How are frequency and period related?
They are directly related.
They are inversely related.
They aren't related.
Whaf can be the most dangerous part of a hurricane?
Answer:
The inside of a hurricane
Explanation:
You will die
Sally performed an experiment.The measurement was taken three times.
68.152 ml 68:154 ml 68.160 ml
The correct measurement was 68.2 ml. Is Sally's measurement accurate, precise,or
neither?
A. accurate
B. precise
C. both
D. neither accurate nor precise
Please answer correctly!!.....
Answer:
accurate it means trying to find accurate or exact value. or tends to find exact value,
Explanation:
3. A crane can lift a 5000 N object to height of 30 m in 120 seconds. The power at which the crane is
operating is:
a 125 Watts
b. 1250 Watts
c. 7500 Watts
d. 250,000 Watts
A harmonic oscillator is described by the function
x(t) = (0.290 m) cos(0.390t).
Find the oscillator's maximum velocity and maximum acceleration. Find the oscillator's position, velocity, and acceleration when t = 2.50 s.
(a)
oscillator's maximum velocity (in m/s)
m/s
(b)
oscillator's maximum acceleration (m/s2)
m/s2
(c)
oscillator's position (in m) when t = 2.50 s
m
(d)
oscillator's velocity (in m/s) when t = 2.50 s
m/s
(e)
oscillator's acceleration (in m/s2) when t = 2.50 s
m/s2
What is the temperature increase of 4.0 kg of water when it is heated by an 8.0 ^102 W immersion heater for exactly 10.0 min? (cp = 4186 J/kg·°C)
Answer:
ΔT = 28.667°C is the answer.
Explanation:
Given,
Mass of water = 4.0 kg
Water is heated by = 8 × 10² W = 800 W
Time = 10 min = 10 × 60 = 600 s
Now,
using the equation of specific heat,
Q = mcΔT
where c is the specific heat capacity of water = 4186 J/kg°C
Q = Pt
Substituting,
Pt = mcΔT
800 × 600 = 4 × 4186 × ΔT
480000 = 16744 × ΔT
ΔT = 28.667
∴Temperature increased, ΔT = 28.667°C
define one ampere current electricity
Explain why the weather changes with the season's temperate climate zones.
Help me out please, don't send links
Answer:
==> C. represent troug of a transverse wave
is the correct answer of this question
hope it helps
Una masa de 4kg esta abajo la acción de una fuerza resultante de (a)4 N (b) 8N y (c) 12 N ¿Cuáles son las aceleraciones resultantes?
Explanation:
A 4kg mass is under the action of a resultant force of (a) 4 N (b) 8N and (c) 12 N What are the resulting accelerations?
Given that,
Mass, m = 4 kg
(a) Force = 4 N
We know that,
Force, F = ma
Where
a is accelertaion,
a= F/m
a = 4/4 = 1 m/s²
(b) F = 8 N
a= F/m
a = 8/4 = 2 m/s²
(c) F = 12 N
a = 12/4 = 3 m/s²
Hence, this is the required solution.
how does increasing and decreasing the temperature affect the kinetic energy of molecules?
Answer:
Amontons's law. If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. ... If the gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases, both of which increase the pressure exerted by the gas
If the wavelength of a wave stays the same and the speed doubles, what happens to the frequency of the wave?
Explanation:
velocity = wavelength × frequency => v= f1 × λ => f1 = v/ λ
λ = stays the same
v = doubles
2v = f2 × λ
2v/λ = f2
now ,
f2/f1= 2vλ/ vλ = 2
f2 = 2f1
therefore frequency is doubled
A 1200 kg car accelerates from rest to 10.0 m/s in a time of 4.50 seconds. Calculate the force that the car’s tires exerted on the road.
please help me i need the answer in 10 mins
Answer:
the force that the car’s tires exerted on the road is 2,666.67 N.
Explanation:
Given;
mass of the car, m = 1,200 kg
initial velocity of the car, u = 0
final velocity of the car, v = 10.0 m/s
time of motion, t = 4.50 s
The force the car’s tires exerted on the road is calculated as follows;
[tex]F = ma= \frac{m(v-u)}{t} \\\\F = \frac{1200(10-0)}{4.5} \\\\F = 2,666.67 \ N[/tex]
Therefore, the force that the car’s tires exerted on the road is 2,666.67 N.
Scavengers are organisms that help clean a habitat by feeding on dead or rotting flesh. They help break down the remains left behind by carnivores. Vultures and maggots (baby flies) are common scavengers.
Decomposers are organisms that break down the remains of dead animals or plants. Many live in or on the soil. Fungi and bacteria are examples of decomposers.
Which of the following is an example of decomposers at work?
a. a fish eating dead seaweed floating in the water
b. a vulture picking apart a dead mouse in the woods
c. a squirrel gnawing at a dead bird on the ground
d. a fungus growing on a rotten tomato, breaking down its skin
Answer:
I think no B
if wrong correct me pls
have a nice day
#Captainpower
좋은 하루 되세요
#캡틴 파워
Answer: B
Explanation:
Vultures and maggots (baby flies) are common scavengers. Decomposers are organisms that break down the remains of dead animals or plants. ... Green plants are called producers because they take energy from sunlight and produce food in which the energy is stored.
Consider 2 steel rods, A and B, B has three times the area and twice the length of A, so young modulus of B will be what factor times young modulus of A?
Answer:
[tex]\frac{Y}{Y_o}[/tex] = 2/3
Explanation:
The yuong modulus of a rod is defined as the relationship between the tensile strength and the strain
Y = [tex]\frac{ \frac{F}{A} }{\frac{\Delta L}{L_o} }[/tex]
let's use the subscript "o" for rod A
I = [tex]\frac{ \frac{F}{A_o} }{ \frac{\Delta L}{L_o} }[/tex]
tells us that rod B has
A = 3 A₀
L = 2 L₀
we substitute
Y = [tex]\frac{ \frac{F}{A} }{ \frac{\Delta L}{L} }[/tex]
Y = [tex]\frac{ \frac{F}{3A_o} }{ \frac{\Delta L}{ 2L_o} }[/tex]
y = ⅔ [tex]\frac{ \frac{F}{A_o}}{ \frac{\Delta }{L_o} }[/tex]
substituting the value of Y₀
Y = ⅔ Y₀
[tex]\frac{Y}{Y_o}[/tex] = 2/3
Please answer this
No links please
Please help!! giving a lot of points
A rollercoaster cart that has a mass of 4500 kg has 67.5 kJ (kilojoules), or 67,500 J (joules), of gravitational potential
energy. What is its height above the ground?
PT.2
The same 4500 kg rollercoaster cart is moving with 63.0 kJ (kilojoules), or 63,000 J (joules), of kinetic energy at the
bottom of its biggest hill. What is its velocity?
Question 1.
mass = 4500 kgpotential energy (p.e) = 67500 Jnow, we know :
=》
[tex]p.e = mgh[/tex]
=》
[tex]67500 = 4500 \times 10 \times h[/tex]
=》
[tex]67500 = 45000 \times h[/tex]
=》
[tex]h = \dfrac{67500}{45000} [/tex]
=》
[tex]h = 1.5 \: m[/tex]
note : if we take acceleration due to gravity as 9.8, then height = 1.53 m
Question 2.
mass = 4500 kgkinetic energy = 63000 jwe know,
=》
[tex]k.e = \dfrac{1}{2} mv {}^{2} [/tex]
=》
[tex]63000 = \dfrac{1}{2} \times 4500 \times {v}^{2} [/tex]
=》
[tex] {v}^{2} = \dfrac{63000 \times 2}{4500} [/tex]
=》
[tex] {v}^{2} = 28[/tex]
=》
[tex]v = \sqrt{28} [/tex]
=》
[tex]v = 2 \sqrt{7} \: \: ms {}^{ - 1} [/tex]
or
=》
[tex]5.29 \: \: ms {}^{ - 1} [/tex]