Answer:
The correct answer is "[tex]12\times 10^{-6} \ C[/tex]".
Explanation:
Given that,
[tex]Q1=+4.0\times 10^{-6} \ C[/tex]
and,
[tex]Q2=+2.0\times 10^{-5} \ C[/tex]
or,
[tex]=20\times 10^{-6} \ C[/tex]
then,
The total charge will be:
⇒ [tex]Q =Q1+Q2[/tex]
[tex]=(+4.0\times 10^{-6}) +(20\times 10^{-6})[/tex]
[tex]=24.0\times 10^{-6} \ C[/tex]
hence,
After separation, the charge on each sphere will be:
⇒ [tex]q=\frac{Q}{2}[/tex]
[tex]=\frac{24.0\times 10^{-6}}{2}[/tex]
[tex]=12\times 10^{-6} \ C[/tex]
What property of an object describes its natural tendency to resist an acceleration?
In fact, it is the natural tendency of objects to resist changes in their state of motion. This tendency to resist changes in their state of motion is described as inertia. Inertia = the resistance an object has to a change in its state of motion.
What is the difference between an object’s speed and its acceleration?
The speed of an object is the distance traveled in unit time, while acceleration of an object is the rate of change of velocity in respect to time
which is not a detritivore
a. maggots
b.worms
c.dung flies
d.squirrels
d. squirrels
Detritivores eat remains. Maggots, flies, worms, fungi, vultures...all detritivores.
Answer:
to small cant see the question
Explanation:
;(
Enumerar 5 actividades en casa o en el trabajo en la que usualmente se mantenga una postura corporal incorrecta
Answer:
Existen cinco actividades en las que se mantiene una postura corporal incorrecta:
1) Sentarse en una silla.
2) Agacharse y levantar una objeto del piso, especialmente cuando es pesado.
3) Sentarse en un escritorio, especialmente frente a una computadora.
4) Llevar una mochila, especialmente si está sobrecargada.
5) Dormir sobre una cama en una posición inadecuada.
Explanation:
Existen cinco actividades en las que se mantiene una postura corporal incorrecta:
1) Sentarse en una silla.
2) Agacharse y levantar una objeto del piso, especialmente cuando es pesado.
3) Sentarse en un escritorio, especialmente frente a una computadora.
4) Llevar una mochila, especialmente si está sobrecargada.
5) Dormir sobre una cama en una posición inadecuada.
A boat moves through the water of a river at 10m/s relative to the water, regardless of the boat ‘s direction . If the water in the river is flowing at n1.50m/s , how long does it take the boat to make a round trip consisting of of 300m displacement downstream followed by a 300m displacement upstream?
Answer:
The appropriate solution is "61.37 s".
Explanation:
The given values are:
Boat moves,
= 10 m/s
Water flowing,
= 1.50 m/s
Displacement,
d = 300 m
Now,
The boat is travelling,
= [tex]10+1.50[/tex]
= [tex]11.5 \ m/s[/tex]
Travelling such distance for 300 m will be:
⇒ [tex]v = \frac{d}{t} \ sot \ t[/tex]
[tex]=\frac{d}{v}[/tex]
On putting the values, we get
[tex]=\frac{300}{11.5}[/tex]
[tex]=26.08 \ s[/tex]
Throughout the opposite direction, when the boat seems to be travelling then,
= [tex]10-1.50[/tex]
= [tex]8.5 \ m/s[/tex]
Travelling such distance for 300 m will be:
⇒ [tex]v=\frac{v}{t} \ sot \ t[/tex]
[tex]=\frac{d}{v}[/tex]
On putting the values, we get
[tex]=\frac{300}{8.5}[/tex]
[tex]=35.29 \ s[/tex]
hence,
The time taken by the boat will be:
= [tex]26.08+35.29[/tex]
= [tex]61.37 \ s[/tex]
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.
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.
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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
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 .
Which one of these wireless technologies is not in the permeable zone of the radio wave spectrum?
1. remote-controlled toy
2. broadcast television
3. garage door opener
4. weather radar
A 22.0 ohm and 75.0 ohm resistor are
in parallel, connected to a 5.00 V
battery. How much current flows out
of the battery?
(Unit = A)
total resistance 97 ohms
ohm's law 5= 97 (I)
I= 5/97 A = 0.0515 A
Answer:0.294
Explanation: right in acellus
Which quantity must equal zero if a car is moving at a constant rate along a straight line?
A. direction of the car
B. energy of the car
C. speed of the car
D. acceleration of the car
The acceleration of the car must equal zero if a car is moving at a constant rate along a straight line.
What forces are acting on a car moving at a constant speed?A car moving at a constant speed (uniform motion) has all forces acting on it balanced. In this case, the two backward forces (air resistance and friction) perfectly balance the applied force of the wheels on the road in the opposite direction.
When the car is moving at a constant speed?Acceleration is defined as the rate of change in speed. So if the car is moving at a constant speed that means the rate of change in speed is zero. Hence, acceleration is zero.
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It can be said that wave length and frequency are _____________ to each other.
A. Indirectly related
B. Directly related
C. Friendly
D. Not at all related
If forces are unbalanced, what is one thing about the object that can change?
A. Location
B. Direction
C. Volume
D. Shape
All moving objects have ____________.
A. Distance
B. Force
C. Time
D. Momentum
Answer:
1. directly related 2. C 3. D
Explanation:
Answer:
1. A
2. B
3. D
Explanation:
im not 100% sure so if any of these are wrong i apologize
When transferring electric charge, an object becomes positive when it _________.
A.
gains protons
B.
loses protons
C.
loses electrons
D.
gains electrons
Answer:
C.
Explanation:
Swapping electrical charges will always have to do with electrons, so A & B can be eliminated easily.
Electrons will be the ones transferring over to the new object. Electrons are naturally negatively charged, so anything that gains electrons will become negatively charged themselves. Whereas if they lose electrons, they will become positively charged.
It's worth noting that protons and electrons have the same exact numerical charge, but they are both opposites. Electrons are negative, and protons are positive. Neutrons on the other hand have no charge (hence the "neutral" root in its name).
A 200 g load attached to a horizontal spring moves in simple harmonic motion with a period of 0.410 s. The total mechanical energy of the spring–load system is 2.00 J.
Complete question:
A 200 g load attached to a horizontal spring moves in simple harmonic motion with a period of 0.410 s. The total mechanical energy of the spring–load system is 2.00 J. Find
(a) the force constant of the spring and (b) the amplitude of the motion.
Answer:
(a) the force constant of the spring = 47 N/m
(b) the amplitude of the motion = 0.292 m
Explanation:
Given;
mass of the spring, m = 200g = 0.2 kg
period of oscillation, T = 0.410 s
total mechanical energy of the spring, E = 2 J
The angular speed is calculated as follows;
[tex]\omega = \frac{2\pi}{T} \\\\\omega = \frac{2\pi}{0.41} \\\\\omega = 15.33 \ rad/s[/tex]
(a) the force constant of the spring
[tex]\omega = \sqrt{\frac{k}{m} } \\\\\omega^2 = \frac{k}{m} \\\\k = m \omega^2\\\\k = (0.2)(15.33)^2\\\\k = 47 \ N/m[/tex]
(b) the amplitude of the motion
E = ¹/₂kA²
2E = kA²
A² = 2E/k
[tex]A = \sqrt{\frac{2E}{k} } \\\\A = \sqrt{\frac{2\times 2}{47} }\\\\A = 0.292 \ m[/tex]
The frequency range for a normal human ear is between 20 Hz and 20 000 Hz. Using 330 m/s as the speed of sound, a. Calculate the shortest wavelength of sound that can be heard: b. Calculate the longest wavelength of sound that can be heard:
Answer:
(a) 0.0165 m
(b) 16.5 m
Explanation:
Applying,
v = λf.................. Equation 1
Where v = velocity, f = frequency, λ = wave length.
make λ the subject of the equation
λ = v/f............. Equation 2
(a) Shortest wavelength (λ')
Given: f' = 20000 Hz, v = 330 m/s
Substitute these values into equation 2
λ' = 330/20000
λ' = 0.0165 m
(b) Longest wavelength (λ)
Given: v = 330 m/s, f = 20 Hz
Substitute these value into equation 2
λ = 330/20
λ = 16.5 m
what makes global winds curve rather than move in a straight line?
Answer:
because the Earth rotates, circulating air is deflected. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere, resulting in curved paths. This deflection is called the Coriolis effect.
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
How much pressure is exerted on the head of a nail when it is struck with a force of 50 N and area of contact is 0.00002 m2?
Force ,F = 50 N
Area on which force act ,A = 0.00002 m²
To Find:-Pressure is exerted on the head of nail,P
Solution:-We have to calculate the pressure exerted on the head of a nail when force of 50 N is applied on nail and the area of contact with nail is 0.00002 m².
As we know that Pressure is calculated by the force acting per unit area.
P = F/Awhere,
P denote pressure
A denote area on which the force acted
F denote force
Substitute the value we get
⟹ P = 50/0.00002
⟹ P = 50×100000/2
⟹ P = 25×100000
⟹ P = 2500000 Pa
Hence, the pressure exerted on the tip of the nail is 2500000 Pascal or 2500 KiloPascal.
[tex]\boxed{\large{\bold{\textbf{\textsf{{\color{brown}{Answer}}}}}}:)}[/tex]
Given :-pressure is exerted on the head of a nail when it is struck with a force of 50 N and area of contact is 0.00002 m²To Find :-Pressure??Solution :-We know that
[tex]\boxed{\bold{P = \dfrac{F}{A}}}[/tex]
where
P = pressuref = forcea = accelerationAccording to the question,
P = 50/0.00002p=50/2/100000p=50×100000/2P = 2500000 PaWhich 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
which example would most likely decrease friction?
Answer:
using cleats other than gym shoes
Explanation:
the cleats hwve spikes and help gain speed
why does the velocity change when the boy hits the ball
Answer:
Freefall is a special case of motion with constant acceleration because acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity.
When a ball is thrown up in the air, its velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum height. At the highest point in its route, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth.
Answer:
Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth
Explanation:
Ano ang kahulugan ng padamdam?
Ang pandamdam ay nagpapahayag ng matinding damdamin.
hope this helps!
please give me brainliest.
thank you!
1. Velocity and speed are both calculated by using what formula?
Explanation:
Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.
HOW TO DO THIS QUESTION PLEASE
The total positive charge on all the atoms of an element are the same because the number of protons determine the identity of the element.
What is an atomic model?An atomic model is a representation of the structure of the atoms of elements.
The negatively charged particles in the figure are the electrons while the positively charged particles are the protons. In the second image, the large grey dot at the center is the nucleus while the smaller grey dots around the ellipses are the electrons.
The total positive charge on all the atoms of an element are the same because the number of protons determine the identity of the element.
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¿Crees que a más horas de sueño mayor descanso?
Answer:
La mayoría de los adultos necesitan entre 7 y 8 horas de sueño de buena calidad en un horario uniforme todas las noches.
Explanation:
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
How much Work have you done if you raise 5.0 N weight 1.8 m above the ground?
Answer:
[tex]9.0\:\text{J}[/tex]
Explanation:
The work of an object is given by [tex]W=F\Delta x[/tex], where [tex]F[/tex] is force applied and [tex]\Delta x[/tex] is displacement.
Substituting given values, we have [tex]W=5.0\cdot 1.8=\boxed{9.0\:\text{J}}[/tex]
Answer:
I have done 9.0 Joule(J) if I raise 5.0 N weight 1.8 m above the ground.
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.