Two students are trying to decide whether or not Object A is charged. They perform the following two
tests:
Test 1: They bring Object A near a positively charged tape and observe attraction.
Test 2: They bring Object A near a negatively charged tape and observe attraction.
These two tests lead to the conclusion that Object A is
a.
charged negatively
b. charged positively
c. electrically neutral
d. charged, but with an unknown type of charge
In a function, each x-value has y value
True or false? The layers of atoms in pure metals can move past each other if a force is applied to alter
the metals shape
What was the runoff from precipitation on the property for areas with vegetation and roofed or paved areas over the past four months? What percent of total precipitation ran off of the property? Include data tables in your answer. Would you expect this percentage to be the same for the properties of other students in the class? Why or why not? What factors decide the percentage of runoff?
Answer:
Higher percentage of runoff water is absorbed by the vegetation whereas 100 % of water runoff on the roofed area.
Explanation:
Higher percentage of runoff water is absorbed by the vegetation and very little amount of runoff water is received on the end of vegetative cover while on the other hand, 100 percent of precipitation water runoff on the surface of roofed or paved area because no water is absorbed by the roof due to its solid surface. The percentage of runoff depends on the factors such as rainfall intensity, slope, soil water storage capacity, and infiltration rate.
A student says an organism that is both a first level and second level consumer is an ominvore. Is that student correct? Explain.
PLZ HELP ILL MARK BRAINLIEST!!!
Balanced forces keep this boy in place on his chair. What are the two equal & opposite forces occurring here?
Answer:
The equal forces are the force of the boy on the chair and consequently the ground. Then the ground produces the opposite force on the chair
4.- Una vagoneta de 1000 kg de peso parte del reposo en el punto 1 y desciende, sin rozamiento, por la vía indicada en la figura. A) Calcular la fuerza que la vía ejerce sobre la vagoneta en el punto 2, donde el radio de curvatura es de 6 m. B) Determinar el mínimo valor del radio de curvatura en el punto 3 para salvar dicho punto
Answer:
A) 49,050 N
B) 16 m
Explanation:
Question:
El dibujo de la pregunta se obtiene de un documento titulado "TRABAJO DIVERSO Y ENERGÍA" que se encuentra en línea y se presenta aquí.
La masa dada del vagón, m = 1,000 kg
La altura del punto en el que descansa el vagón, punto 1, h₁ = 12 m
A) El radio en el punto 2, el punto más bajo, R = 6 m
La fuerza, 'N', que la vía ejerce sobre el vagón en el punto 1 viene dada por la siguiente relación;
N = El peso del vagón + La fuerza de movimiento del vagón
∴ N = m × g + m × a
Dónde;
g = La aceleración debida a la gravedad ≈ 9,81 m / s²
a = La aceleración del vagón
Observamos que para el movimiento circular, la fuerza de movimiento del vagón, m × a = La fuerza centrípeta que actúa sobre el vagón = m × v² / R
∴ m × a = m × v² / R
Dónde;
v² = La velocidad del vagón en el punto 2 = 2 · g · h₁
Por lo tanto;
N = m × g + m × a = m × g + m × v² / R = m × g + m × 2 · g · h₁ / R
∴ N = 1000 × 9,81 + 1000 × 2 × 9,81 × 12/6 = 49,050
La fuerza que ejerce el vagón en el punto 2, N = 49,050 N
B) En el punto 3, tenemos;
N = m · g - m · a₃
La fuerza centrípeta en el punto 3, m · a₃ = m · v₃² / R₃
∴ La altura en el punto 3, h₃ = 4 m
El cuadrado de la velocidad en el punto 3, v₃² = 2 · g · (h₁ - h₃)
Para que el vagón esté seguro en el punto 3, la fuerza de la vía sobre el vagón, N = 0 para que el vagón permanezca en la vía actuando
Por lo tanto;
N = m · g - m · a₃ = 0
m · g = m · a₃ = m · v₃² / R₃ = m · (2 · g · (h₁ - h₃)) / R₃
∴ R₃ = (2 · g · (h₁ - h₃)) / g = (2 · (h₁ - h₃)) = 2 × (12 - 4) = 16
El radio de curvatura en el punto 3 para que el punto sea seguro es R₃ = 16 m.
How many different license plates with 4 letters (26) followed by 2 digits (0-9) are possible if letters and digits cannot be repeated?
Answer:
26
Explanation:
edg
Isaac Newton experimented with prisms in 1666. What did his experiments show?
3
O white sunlight is made up of all the colors in the rainbow
O the human eye cannot detect all the colors
there are certain colors that cause insanity
O candlelight does not refract through prisms
Answer:
hhgfyfyvghguvuhgcftfcgygyvguygvyt67dtuf
Explanation:
vgyc gghggvtgfvtifctttig7fcjti7jfctithcu6tchfufhtcufthcufchuftj
A periodic wave has a wavelength of 0.60 m and a speed of 40 m/s. What is the
wave frequency?
hello please help i’ll give brainliest
Answer:
First answer.
Explanation:
There may be a 5N force, but if the frictional force also equals 5N, than they cancel eachother out, resulting in the brick still staying still, as it is resting on a (perfectly) level surface, but any amount of force would make the brick move.
Which caused the greatest increase of the growth of the human population
Answer:
This rapid growth increase was mainly caused by a decreasing death rate (more rapidly than birth rate), and particularly an increase in average human age. By 2000 the population counted 6 billion heads, however, population growth (doubling time) started to decline after 1965 because of decreasing birth rates.
Explanation:
The main cause of human population growth is increased well-being.
Well-being is a term to refer to the state of satisfaction of economic, social, labor, psychological, biological needs, among others of the human.
Therefore, when civilizations and societies became more complex, many issues such as health, food, hygiene, education, government, among others, improved, giving more well-being to their inhabitants.
Well-being has evolved with society and today people have access to many things, services, and goods that give them well-being, improving their quality and life expectancy. Therefore, the correct answer is well-being.
Learn more at: https://brainly.com/question/10571076
What is the gravitational force between the Earth
(mEarth = 5.98 x 1024 kg, rEarth = 6.378 x 106 m)
and a 15,000 kg satellite in Earth’s orbit 575-km above Earth’s surface?
Answer:
____________ Newtons
I really need help on this! Can someone please help? Thank you!
Answer:
17.7MN
Explanation:
Given Data
m1 = 5.98 x 10^24 kg
m2= 15,000 kg
R= 6.378 x 10^6 m+575-km
R= 6.378 x 10^3+575*10^3-km
R= 581378m
G = 6.673 x 10-11 N m^2/kg2
This net centripetal force is the result of the gravitational force that attracts the satellite towards the central body and can be represented as
F =GM1M2 / R^2
F =6.673 x 10-11* 5.98 x 10^24*15,000 / 581378^2
F =6.673 x 10^-11* 5.98 x 10^24*15,000 / 581378^2
F= 39.90454*10^13*15,000/ 581378^2
F= 598.5681*10^16/338000378884
F= 17709095.5335N
F= 17.7MN
A vector is 14.4 m long and
points in a 133 degree
direction.
Find the x-component of the
vector.
X-component (m)
Answer:
Explanation:
The x-component is found in the magnitude of the vector times the cosine of the angle.
[tex]A_x=14.4cos133[/tex] and, to 3 sig dig,
[tex]A_x=-9.82m[/tex]
How much work will the girl do if she pushes the lawnmower twice as far? guys helpppp!!
Answer: she will do double the work
Explanation:
100N×200m= 20000
Force applied by the girl is 100 Newtons
[tex]f = 10 N[/tex]Displacement is twice :
[tex]d = 2 \times 200[/tex][tex]d = 400[/tex]Solution :[tex] \large \boxed{ \mathrm{work \: \: done = f \times d}}[/tex]
[tex]work \: done = 400 \times 100[/tex][tex]work \: done = 40000 \: joules[/tex][tex]work \: done = 40 \: kj[/tex]_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
A small canon is placed on top of a fortification the cannon ball leaves the muzzle of the canon with a speed of 85 m/s
Answer:
Speed of cannonball just before it hits the ground is 90.77 m/s
Explanation:
Complete Question
A small cannon is placed on top of a fortification. the cannonball leaves the muzzle of the cannon with a speed of 85 m/s at an angle of 25°c above the horizontal. just before the cannonball hits the ground, the vertical component of velocity is 48 m/s downward. what is the speed of the cannonball just before it hits the ground? ignore air resistance.
Solution
Given
Speed = 85 m/s
The angle = 25 degrees
When it will hit the ground, then vertical velocity = 48 m/s
However, in the projectile motion, the horizontal component will not change
Vr = V cos (theta) = 85 * cos25
Speed of cannonball just before it hits the ground is
V’ = Sqrt (48^2 + (85 * cos 25)^2) = 90.77 m/s
Exam
You push on a shovel then the
shovel pushes on dirt. The force
you apply to the shovel is the
input force. The shovel then
pushing on the dirt is known as
what?
A. Output work
B. Input work
C. Input force
D. Output force
Choose one of these three people and write a letter to them to express your concerns about the events of 01/06/21
pls include a explanation!!!:)<3
Answer:
Option C. 4.5×10¯² N
Explanation:
From the question given above, the following data were obtained:
Charge 1 (q₁) = +5×10¯⁶ C
Charge 2 (q₂) = –4×10¯⁶ C
Distance apart (r) = 2 m
Electrical constant (K) = 9×10⁹ Nm²/C²
Force (F) =?
The magnitude of the force can be obtained as follow:
F = Kq₁q₂ / r²
F = 9×10⁹ × 5×10¯⁶ × 4×10¯⁶ / 2²
F = 0.18 / 4
F = 0.045
F = 4.5×10¯² N
Thus, magnitude of the force is 4.5×10¯² N
Which of the following does light demonstrate?
A. Both particle and wave characteristics
B. Particle characteristics only
C. Neither particle nor wave characteristics
D. Wave characteristics only
Answer:
A
Explanation:
Light has both wave and particle characteristics. It behaves as wave in examples such as Reflection, refraction, diffraction, interference. It behaves as a particle in photoelectric effect, compton's effect etc. Light is an example of wave-particle duality.
Light demonstrate both particle and wave characteristics. It can be understood by photo electric effect .
What is light?Light behaves like a particle in some phenomenon , for example photoelectric effect and like wave in some phenomenon , for example reflection and refraction , in this wave light has dual nature.
What is Photoelectric effect ?Emission of photo electrons due to incidence of light on a surface, is called photo electric effect. For it the energy of the incident light should be greater than the work function of the material on which light incidents.
To know more about photo electric effect and light
https://brainly.com/question/16713206
#SPJ2
The Hubble Space Telescope has a mass of 1.16*10^ 4 kg and orbits the Earth at an altitude of 5.68 * 10 ^ 5 above Earth's surface. Relative to infinitydetermine the potential energy the telescope at this location. Would the formula be Ep=-Gm1m2/r or positive G since it’s relative to infinity
Answer:
[tex]E=8.13\times 10^{12}\ J[/tex]
Explanation:
Given that,
The mass of a Hubble Space Telescope, [tex]m_1=1.16\times 10^4\ kg[/tex]
It orbits the Earth at an altitude of [tex]5.68\times 10^5\ m[/tex]
We need to find the potential energy the telescope at this location. The formula for potential energy is given by :
[tex]E=\dfrac{Gm_1m_e}{r}[/tex]
Where
[tex]m_e[/tex] is the mass of Earth
Put all the values,
[tex]E=\dfrac{6.67\times 10^{-11}\times 1.16\times 10^4\times 5.97\times 10^{24}}{5.68\times 10^5}\\\\E=8.13\times 10^{12}\ J[/tex]
So, the potential energy of the telescope is [tex]8.13\times 10^{12}\ J[/tex].
I NEED THIS TURNED IN ASAP I WILL MARK YOU THE BRAINLIEST NO LINKS
Draw a force diagram on the object in the image. Identify 4 forces acting on the object, draw an arrow to represent their strength and direction. Label each arrow with the type of force.
Answer:
^
| buoyancy force
|
<----drag \_____________/ -----------> thrust
| weight
v
Explanation:
those are the forces and I tried to draw the arrows best I could with size too
I WILL MARK YOU THE BRAINLIEST NO LINKS
There are 4 springs stretched by the same mass. Spring A stretches 25 cm. Spring B stretches 10 cm. Spring C stretches 100 cm. Spring D stretches 1 cm. Which spring is strongest?
A
B
C
D
yeah definitely spring c
why is hip-hop & Zumba dance exercises so popular? does dancing make you a better person?
Answer:
not realy
Explanation:
dancing is a way of exercise and liking a song or you're just happy etc.
A hair dryer uses 1100 W of power
when connected to a 110 V outlet.
What is the resistance of the hair
dryer?
Answer:10
Explanation:acellus
Light waves require a medium to travel. *
True
False
A wave is moving at the rate of 40 cm/s. Its wavelength is 5 cm. What is the frequency of the wave? INCLUDE THE CORRECT UNIT!
Answer:
Solution given:
velocity=40cm/s
wave length=5cm
we have
frequency =velocity/wavelength=40/5=8hertz.
the frequency of the wave is 8 hertz.
A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. Find the kinetic energy
Answer: I am not sure
Explanation: I am not sure
Can somebody help me with some stuff
Answer:
thank u
but can u comment me how can I help u
stay safe healthy and happy.
A 0.1 kg mass is connected to a spring with a spring constant of 100 N/m. The spring is
stretched a displacement of 0.2 meters and released. What is the total energy in this system?*
(1 Point)
2.0)
4.0J
10.0)
20.03
Answer:
[tex]2.0\:\mathrm{J}[/tex]
Explanation:
The elastic potential energy of a spring is given by:
[tex]U_s=\frac{1}{2}kx^2[/tex], where [tex]k[/tex] is the spring constant and [tex]x[/tex] is the displacement from equilibrium.
Solving for [tex]U_s[/tex], we get:
[tex]U_s=\frac{1}{2}\cdot 100\cdot 0.2^2,\\U_s=\boxed{2.0\:\mathrm{J}}[/tex]
