Answer:
[tex] y_{t} = 253.94 m [/tex]
Explanation:
Para resolver este problema debemos contemplar dos tramos.
En el primer tramo, la fuerza aplicada impulsa al cuerpo a subir una altura dada debido a la aceleración que genera esa fuerza.
[tex] \Sigma F = ma [/tex]
[tex] F - P = ma [/tex]
[tex] F - mg = ma [/tex]
En donde:
F: es la fuerza aplicada = 60 N
P: es el peso del cuerpo = mg
m: es la masa del cuerpo = 4 kg
g: es la aceleración debido a la gravedad = 9.81 m/s²
a: es la aceleración
Entonces, la aceleración generada por la fuerza aplicada es:
[tex] a = \frac{F - mg}{m} = \frac{60 N - 4kg*9.81 m/s^{2}}{4 kg} = 5.19 m/s^{2} [/tex]
Ahora, debemos calcular la altura recorrida mientras el cuerpo está acelerado hacia arriba:
[tex] y_{{1}} = y_{0} + v_{0}t + \frac{1}{2}at^{2} [/tex]
En donde:
[tex] y_{1}[/tex]: es la altura final del tramo 1 =? [tex] y_{0}[/tex]: es la altura inicial = 0
[tex] v_{0}[/tex]: es la velocidad inicial = 0 (parte del reposo)
t: es el tiempo = 8 s
[tex] y_{1} = 0 + 0 + \frac{1}{2}5.19 m/s^{2}*(8 s)^{2} = 166.08 m [/tex]
Por lo tanto, mientras el cuerpo está acelerado (durante los 8 s) recorre 166.08 metros.
Ahora, en el segundo tramo el cuerpo sigue subiendo hasta alcanzar una altura máxima para luego comenzar a descender. Podemos usar la siguiente ecuación para calcular la altura recorrida.
[tex] v_{f}^{2} = v_{0}^{2} - 2gy_{2} [/tex]
En donde:
[tex] v_{f}[/tex]: es la velocidad final = 0 (en la altura máxima)
[tex] v_{0}[/tex]: es la velocidad inicial
Primero debemos encontrar la velocidad inicial en el segundo tramo, que es igual a la velocidad final del primer tramo:
[tex] v_{f} = \sqrt{v_{0} + 2ay_{1}} = \sqrt{0 + 2*5.19 m/s^{2}*166.08 m} = 41.52 m/s [/tex]
Entonces, la altura recorrida en el segundo tramo es:
[tex] y_{2} = \frac{v_{0}^{2} - v_{f}^{2}}{2g} = \frac{(41.52 m/s)^{2} - 0}{2*9.81 m/s^{2}} = 87.86 m [/tex]
Finalmente, la altura máxima es:
[tex]y_{t} = y_{1} + y_{2} = 166.08 m + 87.86 m = 253.94 m[/tex]
Espero que te sea de utilidad!
Which of the following best describes a nebula?
Explanation:
is a formation in space which is constituted mostly of helium, dust and other gases in various concentration
The information shows the masses after the compounds are balanced.
2MgO + 2Cl2 → 2MgCl2 + O2
85g + 156g → 188g + ?
If the following materials are used during the reaction of magnesium, oxygen, and chlorine, what mass oxygen would we expect to see after the reaction and why?
A.
53g of O2, because all mass must be conserved.
B.
241g of O2, because all mass must be conserved.
C.
42.5g of O2, because all mass must be conserved, it would be half of the compound MgO in the products.
D.
106g of O2, because all mass must be conserved, it would be double the compound MgO in the products.
Answer:
The information shows the masses after the compounds are balanced.
2MgO + 2Cl2 → 2MgCl2 + O2
85g + 156g → 188g + 53g
as total mass in reactant is equal to product.
A.
53g of O2, because all mass must be conserved.
Based on the model, which three factors might cause this change in the apparent movements of the stars? A. Earth's rotation on its axis B. Earth's revolution around the Sun C. The tilt of Earth's axis D. Earth's changing distance from the Sun
Answer:
I think it's A C and D sry if I'm wrong UwU
what characteristic describes what happens during a physical change
PLEASE HELP ASAP, WILL MARK BRAINLIEST!!!!
Answer:
it's yellowish orange (3)
Explanation:
A grapefruit has a pH of somewhere between 2.9-3.3 and it is quite acidic. The juice of a grapefruit can cause erosion of tooth enamel and cause damage to one's teeth if ate excessively
A tank has the shape of an inverted circular cone with height 16m and base radius 3m. The tank is filled with water to a height of 9m. Find the work required to empty the tank by pumping all of the water over the top of the tank. Use the fact that acceleration due to gravity is 9.8 m/sec2 and the density of water is 1000kg/m3. Round your answer to the nearest kilojoule.
Answer:
[tex]W=17085KJ[/tex]
Explanation:
From the question we are told that:
Height [tex]H=16m[/tex]
Radius [tex]R=3[/tex]
Height of water [tex]H_w=9m[/tex]
Gravity [tex]g=9.8m/s[/tex]
Density of water [tex]\rho=1000kg/m^3[/tex]
Generally the equation for Volume of water is mathematically given by
[tex]dv=\pi*r^2dy[/tex]
[tex]dv=\frac{\piR^2}{H^2}(H-y)^2dy[/tex]
Where
y is a random height taken to define dv
Generally the equation for Work done to pump water is mathematically given by
[tex]dw=(pdv)g (H-y)[/tex]
Substituting dv
[tex]dw=(p(=\frac{\piR^2}{H^2}(H-y)^2dy))g (H-y)[/tex]
[tex]dw=\frac{\rho*g*R^2}{H^2}(H-y)^3dy[/tex]
Therefore
[tex]W=\int dw[/tex]
[tex]W=\int(\frac{\rho*g*R^2}{H^2}(H-y)^3)dy[/tex]
[tex]W=\rho*g*R^2}{H^2}\int((H-y)^3)dy)[/tex]
[tex]W=\frac{1000*9.8*3.142*3^2}{9^2}[((9-y)^3)}^9_0[/tex]
[tex]W=3420.84*0.25[2401-65536][/tex]
[tex]W=17084965.5J[/tex]
[tex]W=17085KJ[/tex]
'
'
convert 40 HP into watt
Answer: 29828 watts
Explanation: hope that helped bro
Which is a valid ionic compound?
sodide chlorine
sodium chlorine
sodium chloride
sodide chloride
Answer:
sodium chloride
Explanation:
Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion. The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.
Which of the following is the unit of momentum
a) ms-1 b) Kg ms-1
c) Ns d) Kgms-2
Answer:
the answer is (b) Kg ms-1 .
Task: At the end of the lesson you will be asked to develop a final writing assignment on the environmental problerns
caused by invasive e algae e, and the methods used to restore the natural habitats e in Crystal River and Kings Bay,
ments
Essay Response: (3 Paragraphs)
5
• Describe the environmental problem caused by invasive algae in these areas and the goals of the Save Crystal River
project.
• Explain the steps in the process used to correct the problem.
. Finally, conclude with why the information gathered during the Save Crystal River project is important to the
environment now and to future generations,
If someone can answer this fast I will mark as brainlist and give them 100 points plzz I need the answer fast and right!!
Answer:
PLS PLS PLS mark brainliest
Explanation:
The following are the environmental problems caused by the invasive algae which is known as Lyngbya.
A. It blocks the sunlight from reaching the water, thereby depriving the plants in the water from accessing it. So they won't be able to manufacture their foods and eventually die off.
B. The algae produce offensive odour like rotten egg , which drive people and other organisms away.
C. The algae prevent oxygen from entering the water, and prevent the resident organisms from making use of it, which leads to their death.
D. The algae also give off heat into the chilly spring waters.
In conclusion, the goals of the Crystal River project is to save the living organisms in the river from extinction and to make it a livable environment for them.
What kind of image is formed by an object that is placed beyond the center of curvature on the principal axis of a concave mirror?
A.
real, inverted, the same size as the object, and at the same distance as the object
B.
real, inverted, larger than the object, and farther from the mirror than the object
C.
virtual, upright, left-right reversal, the same size as the object, and at the same distance as the object
D.
real, inverted, smaller than the object, and closer to the mirror than the object
E.
virtual, upright, larger than the object, and farther from the mirror than the object
Answer:D.
Real, inverted, smaller than the object, and closer to the mirror than the object
Explanation: Real images will be inverted. As it is beyond the centre of curvature it is also beyond 2F which means that the image is inside the centre of curvature ( between F and 2F from the mirror ) As the image is closer to the mirror than the object it must be diminished in size
26. A physical science student is performing a thermodynamics experiment in the school laboratory. She takes a 30.0 g ice cube at 0. °C and melts it to water in a beaker over a laboratory burner. She then heats the water to boiling at 100. °C. Finally she boils the water entirely to steam at 100. °C. How much thermal energy was gained by the water during this entire process?
Answer:
The thermal energy gained by the water during the entire process is 90,372 J
Explanation:
Given;
mass of the ice cube, m = 30 g
latent heat of fusion of ice, L = 334 J/g
specific heat capacity of water, C = 4.184 J/g⁰C
latent heat of vaporization of water, h = 2260 J/g
The thermal energy gained by the water during the entire process is calculated as;
[tex]Q_t = Q_{fusion-ice} \ + \ Q_{boil-water} \ + \ Q_{steam-vapor}[/tex]
The heat of fusion of the ice at 0⁰C is calculated as;
[tex]Q_{fusion} = mL = 30\ g \times 334 J/g = 10020 \ J[/tex]
The heat of capacity of the water from 0⁰C to 100 ⁰C
[tex]Q_{boil-water} = mc\Delta \theta = mc(100-0) = 30\ g \times 4.184\ J/g^0C \times 100\ ^0C = 12,552 \ J[/tex]
The heat of vaporization of the steam at 100⁰C is calculated as;
[tex]Q_{steam} = mh= 30 g \times 2260 \ J/g= 67,800 \ J[/tex]
The thermal energy gained by the water during the entire procees;
Qt = 10,020 J + 12,552 J + 67,800 J
= 90,372 J
Therefore, the thermal energy gained by the water during the entire process is 90,372 J
Under what condition do the values of gravitational
force, and gravitational constant become same/
equal
Answer:
values of gravitational force and gravitational constant become same or equal when product of masses involved equals the square of distance between them
Explanation:
Velocity is often described as speed with a __________.
Answer:
rate
Explanation:
Note that speed has no direction (it is a scalar) and the velocity at any instant is simply the speed value with a direction.
Which statement did Ernest Rutherford make about atoms?
A. Atoms are different for different elements.
B. The atom has a small, dense center.
O C. The atom is made up of smaller particles.
D. The energy of an electron depends on its specific orbit.
The statement did Ernest Rutherford make about atoms will be the atom has a small, dense center. Then the correct option is B.
What is the Ernest Rutherford model?The majority of alpha particles went right through the gold foil, signifying that particles are mostly made up of empty space. Several alpha particles were mildly distracted, indicating interactions with positively charged particles within the unit. Some alpha particles were spread at wide degrees, with a few even returning to the source.
Rutherford characterized the atom in 1911 as having an understanding, dense, and ionized center termed the nucleus. Rutherford discovered that the mass of an atom is possessed in its nucleus.
The atom has a small, dense center. Thus, option B is correct.
More about the Ernest Rutherford model link is given below.
https://brainly.com/question/5831461
#SPJ1
How should Simon use the theory of relativity to
describe what the astronaut must do in order to hit the
button?
Simon is writing a story about an astronaut whose
spacecraft has been boarded by space pirates. The
astronaut has her lucky penny in her hand behind her
back as the space pirates break into the control room.
She has just locked the controls so that the ship is
accelerating in the direction of the control room's
ceiling. Simon wants the astronaut to use the penny to
hit a button on the control panel to turn off the lights
and escape. The button is located a short distance
behind and below the astronaut's hands.
O The astronaut should toss the penny straight up as
it will appear to fall in an arc because objects in an
accelerating frame of reference behave in the same
way as they would in a gravity field.
O The astronaut should just let the penny go, as the
control panel will accelerate upward and curve
toward the astronaut because there is no gravity
field
O The astronaut should toss the penny horizontally
straight behind her as it will appear to fall in an arc
because objects in an accelerating frame of
reference behave in the same way as they would in
a gravity field.
The astronaut should toss the
Answer:
C
Explanation:
Answer:
c
Explanation:
edge
a wave has a frequency of 10Hz and a wavelength of 30 m. What's its velocity?
Do noble gases lose or gain electrons to get a full valence shell?