Answer:
A. 2.58m
Explanation:
Using the formula;
F = GMm/r²
M and m are the masses
G is the gravitational constant
r is the distance between the masses
Substitute
0.00006 = 6.67*10^-11(2000)(3000)/r²
0.00006r² = 6.67*10^-11*6000000
0.00006r² = 40.02*10^-5
0.00006r² = 0.0004
r² = 0.0004/0.00006
r² = 6.66
r = 2.58m
Hence the distance between them is 2.58m
What is the energy transformation of these street lights with solar panels?
A container of gas is held at a constant volume. Which will most likely happen to the temperature if the pressure of the gas increases?
The temperature will increase at the same rate as the pressure increases.
The temperature will decrease at the same rate as the pressure increases.
The temperature will increase at half the same rate as the increase in pressure.
The temperature will decrease at half the same rate as the increase in pressure.
Answer:
With more particles there will be more collisions and so a greater pressure. The number of particles is proportional to pressure, if the volume of the container and the temperature remain constant. ... This happens when the temperature is increased.
Explanation:
Assuming the gas to be an ideal gas, the temperature will increase at the same rate as the pressure increases.
Ideal gas:Let us assume that the gas in the container is an ideal gas. Then from the ideal gas equation, we get that:
PV = nRT
where P is the pressure of the gas
V is the volume
T is the temperature
n is the number of moles of the gas
R is the universal gas constant
Now, it is given that V is constant, R is already a constant, and n will also be constant, since the number of moles of gas in the container is not changing, so:
P = nRT/V
P = constant × T
P/T = constant
This means that the temperature will increase at the same rate as the pressure increases.
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Hello, please help!
Is methane an element, compound, or mixture?
Is Carbon Dioxde an element, compound, or mixture?
Answer:
I think carbon dioxide is a mixuture and Methane is a compound
Explanation:
two points A=(+16) and B=(-4) At electric potential respectively find:
a)which points is at higher potential?
b)what is the pontial difference b/w the two points?
c)the work done in moving acharge of 5C from A to B?
Answer:
a. Point A
b. 20 V
c. 100 J
Explanation:
a. Point A is at a higher potential because there is a positive sign in front of its magnitude. Since it is a positive integral value, and has a higher magnitude than point B which is at -4, point A is thus at a higher potential than point B.
b. The potential difference between the two points ΔV = A - B
= +16 V - (-4 V)
= +16 V + 4 V
= + 20 V
c. The work done, W in moving a charge Q across a potential difference ΔV is W = QΔV
So, since Q = 5 C and ΔV = + 20 V
W = QΔV
= 5 C × (+ 20 V)
= 100 J
In object moving with a speed of 21M/S and has a kinetic energy of 140j, what is thr mass of the object
HELP ASAP!!!!!!! PLEASE WILL GIVE BRAINLIEST
What is a selectively permeable membrane?????????????
Answer: The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells. Semipermeable membrane describes a membrane that allows some particles to pass through (by size), whereas the selectively permeable membrane "chooses" what passes through (size is not a factor). Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. For example, water, ions, glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. Similarly, signaling molecules may need to enter the cell and proteins may need to be released into the extracellular matrix. The presence of a selectively permeable membrane allows the cell to exercise control over the quantum, timing and rate of movement of these molecules.
Explanation: hope this helps you with your work/assingment! Have a wonderful day/night!
Differentiate between
Length and Time
Answer:
Concept: Physical Constants
Length is a measure of distance Time is a measure of concept of space.The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.
Meaning of Length and TimeLength can defined as a fundamental quantity that describe the total space occupied by an object from end to end or the distance of an object from end to end.
Time can be defined the duration of an occurrence in space. Time is so important as it helps us adequately know the period of an event or occurrence.
In conclusion, The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.
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What is the mass of an object which has a force of 600 N acting on it and is travelling
with an acceleration of 15 m/s2?
Answer:
The mass of the object is 40 Kg
Explanation:
Net Force
According to the second Newton's law, the net force exerted by an external agent on an object is:
F = m.a
Where:
a = acceleration of the object.
m = mass of the object.
The mass can be calculated by solving for m:
[tex]\displaystyle m=\frac{F}{a}[/tex]
The object has a net force of F=600 N acting on it and travels at [tex]a=15\ m/s^2[/tex], thus the mas is:
[tex]\displaystyle m=\frac{600}{15}[/tex]
m = 40 Kg
The mass of the object is 40 Kg
can i get a little bit idea about Quantum physics
Answer:
What is quantum physics? Put simply, it's the physics that explains how everything works: the best description we have of the nature of the particles that make up matter and the forces with which they interact. Quantum physics underlies how atoms work, and so why chemistry and biology work as they do.
A scientist heats an unknown substance in a closed system. The graph shows the change in temperature over time.
Answer:
C
Explanation:
When a substance is changing state, the heat supplied does not result in a rise in temperature. This is why, the heat supplied during change of state is referred to as 'latent heat'.
Latent heat is a heat that causes a change of state without a corresponding rise in temperature. During this time, the intermolecular bonds in the substance are broken.
Change of state will occur as regions in which there is no change in temperature with time such as point D on the graph.
Answer:
C
Explanation:
for me at least it was
Can a body moving in circular path have constant velocity? Explain.
Answer:
constant velocity means that both the speed and direction do not change . An object moving in a circular path with constant speed does not have a constant velocity because the direction of the velocity is constantly changing. This implies that an object moving at a constant speed in a circular path is accelerating
help with this question.......
Answer:
its a liquid
Explanation:
liquid means water water means liqiud without them we cannot survive we need to be healthy we should bath we should drink more amount of water
An earthquake sends a seismic wave through the ground. What is the
medium? ANSWER QUICK!
Answer:
THE GROUND IS THE MEDIUM OF SEISMIC WAVES
How far does a car travel in 30.0 s while its velocity is changing from 50.0 km/h to 80.0 km/h at a uniform rate of acceleration?
Answer:
f
Explanation:
Dua titik yang bermuatan listrik yang sama, mula-mula berjarak 5 cm dan saling tarik menarik dengan gaya 225 N. Agar kedua titik muatan tersebut gaya tarik menariknya menjadi 25 N, maka seharusnya jarak kedua titik muatan itu menjadi….
Answer:
15 cm
Explanation:
Dari pertanyaan yang diberikan di atas, diperoleh data sebagai berikut:
Gaya 1 (F₁) = 225 N
Jarak terpisah 1 (d) = 5 cm
Gaya 2 (F₂) = 25 N
Jarak terpisah 2 (d₂) =?
Kita dapat memperoleh persamaan yang berkaitan dengan gaya dan jarak muatan dua titik dengan menggunakan rumus berikut:
F = Kq₁q₂ / d²
Perbanyak silang
Fd² = Kq₁q₂
Menjaga Kq₁q₂ konstan, kita memiliki:
F₁d₁² = F₂d₂²
Dengan rumus di atas maka diperoleh jarak sebagai berikut:
Gaya 1 (F₁) = 225 N
Jarak terpisah 1 (d) = 5 cm
Gaya 2 (F₂) = 25 N
Jarak terpisah 2 (d₂) =?
F₁d₁² = F₂d₂²
225 × 5² = 25 × d₂²
225 × 25 = 25 × d₂²
5625 = 25 × d₂²
Bagilah kedua sisinya dengan 25
d₂² = 5625/25
d₂² = 225
Hitung akar kuadrat dari kedua sisi
d₂ = √225
d₂ = 15 cm
Oleh karena itu, muatan dua titik harus berjarak 15 cm untuk memiliki gaya tarik 25 N
A plumb bob is hanging from the ceiling of a car. If the car moves with an acceleration a, what is the angle made by the string with the vertical?
Answer:
[tex]\theta=\tan^{-1}\dfrac{a}{g}[/tex]
Explanation:
Here we are assuming that the car is moving in a straight line and is traveling on a smooth surface. When the car is moving with acceleration [tex]a[/tex] the bob moves in the opposite direction with the same acceleration. Gravity is acting on the bob so it is experiencing an acceleration of [tex]g[/tex] downwards.
The angle between the acceleration [tex]a[/tex] and the acceleration due to gravity [tex]g[/tex] is
[tex]\theta=\tan^{-1}\dfrac{a}{g}[/tex].
which type of rock do you think will erode more quickly and why
Using the data table to the right, determine the
identity of a cube of metal that measures 1.2 cm on each
side and has a mass of 18.15 grams.
A. Gold C. Nickel
B. Silver D. Zinc
Please help me on this!!
What statement about the milky way is true?
Answer:
D) it is one of many galaxies
Explanation:
the milky-way galaxy is just one of billions of galaxies, which span billions and billions of light-years across the universe!!!
Answer:
D it is one of many
Explanation:
Jimmy runs a chain of souvenir shops in South Florida. He imports T-shirts and other apparel from Guatemala to sell in his stores. One day, student protesters damage several of his stores, demanding that he pay his workers in Guatemala a fair wage. Jimmy estimates the damage at $5,500. He sues the protestors for the damage they cause. Where is the original jurisdiction of this case?
Answer he would go to court veto bill
Explanation
that how it works
400 N pushes on a 25-kg box. Starting from rest, the box achieves
a velocity of 2.0 m/s in a time of 4.0 s. Find the coefficient of kinetic friction between box and
floor.
Answer:
The kinetic coefficient of friction between box and floor is 0.443.
Explanation:
Let suppose that the box is accelerated uniformly, the acceleration ([tex]a[/tex]), measured in meters per square second, is determined by the following kinematic formula:
[tex]a = \frac{v_{f}-v_{o}}{t}[/tex] (1)
Where:
[tex]v_{o}[/tex], [tex]v_{f}[/tex] - Initial and final speeds of the box, measured in meters per second.
[tex]t[/tex] - Time, measured in seconds.
If we know that [tex]v_{o} = 0\,\frac{m}{s}[/tex], [tex]v_{f} = 2\,\frac{m}{s}[/tex] and [tex]t = 4\,s[/tex], then the acceleration experimented by the box is:
[tex]a = \frac{2\,\frac{m}{s}-0\,\frac{m}{s} }{4\,s}[/tex]
[tex]a = 0.5\,\frac{m}{s^{2}}[/tex]
Based on the body diagram, we proceed to form the equations of equilibrium:
[tex]\Sigma F_{x} = P\cdot \cos \theta -\mu_{k}\cdot N = m\cdot a[/tex] (1)
[tex]\Sigma F_{y} = N - m\cdot g - P\cdot \sin \theta = 0[/tex] (2)
Where:
[tex]P[/tex] - Magnitude of the force exerted on the box, measured in newtons.
[tex]\theta[/tex] - Direction of the force exerted on the box, measured in sexagesimal degrees.
[tex]\mu_{k}[/tex] - Kinetic coefficient of friction between box and floor, dimensionless.
[tex]N[/tex] - Normal force from the floor to the box, measured in newtons.
[tex]m[/tex] - Mass of the block, measured in kilograms.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
Now we proceed to solve the system of equation for the kinetic coefficient of friction between box and floor:
By (1)
[tex]\mu_{k}\cdot N = P\cdot \cos \theta -m\cdot a[/tex]
[tex]\mu_{k} = \frac{P\cdot \cos \theta - m\cdot a}{N}[/tex]
By (2)
[tex]N = m\cdot g +P\cdot \sin \theta[/tex]
And then, we get the resulting expression:
[tex]\mu_{k} = \frac{P\cdot \cos \theta - m\cdot a}{m\cdot g + P\cdot \sin \theta}[/tex] (3)
If we know that [tex]P = 400\,N[/tex], [tex]\theta = 50^{\circ}[/tex], [tex]m = 25\,kg[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]a = 0.5\,\frac{m}{s^{2}}[/tex], then the kinetic coefficient of friction between box and floor is:
[tex]\mu_{k} = \frac{(400\,N)\cdot \cos 50^{\circ}-(25\,kg)\cdot \left(0.5\,\frac{m}{s^{2}} \right)}{(25\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)+(400\,N)\cdot \sin 50^{\circ}}[/tex]
[tex]\mu_{k} = 0.443[/tex]
The kinetic coefficient of friction between box and floor is 0.443.
The kinetic coefficient of friction between box and floor is 0.443.It is the ratio of friction force and the normal recation force.
What is the friction force?It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).
Mathematically it is defined as the product of the coefficient of friction and normal reaction.
The given data in the problem is;
F is the force =400 N
m is the mass of box= 25-kg
u is the velocity starting from rest=0
v is the velocity achieved = 2.0 m/s
t is the time = 4.0 s.
[tex]\rm \mu[/tex] is the coefficient of kinetic friction between box and floor.
The aceleration is found as;
[tex]\rm a= \frac{v_f-v_u}{t} \\\\ \rm a= \frac{2-0}{4} \\\\ \rm a= 0.5 m/sec^2[/tex]
The normal reaction force is find as;
[tex]N= mg +P sin \theta[/tex]
The cofficient of the kinetic coefficient of friction between box and floor;
[tex]\rm \mu_k = \frac{Pcos \theta - ma }{N } \\\\ \rm \mu_k = \frac{Pcos \theta - ma }{ mg +P sin \theta } \\\\ \rm \mu_k = \frac{400 cos 50^0 - 25 \times 0.5 }{ 25 \times 9.81 +400 \times sin 50^0 } \\\\ \rm \mu_k =0.443[/tex]
Hence he kinetic coefficient of friction between box and floor is 0.443.
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7. What force is required to accelerate a 100 kg car to 4 m/s27 F=ma
O A. 25N
B. 104N
C. 400N
Answer:
is the formula is F=MA so
F=100kg×4m/s=400n
so the answer is 400n
Do this work if someone give correct answer I make her brainliest do this worksheet please
Answer:
a. Any one way then I can say that Aluminum sulfide has mass per mole of ≈150.2g while aluminum has mass per mole of 26.9g
b. Sulfur is an element but aluminum sulfide is a compound
c.Beryllium and chlorine
d. BeCl2
e.i. Metals form ions by losing electrons but nonmetals form ions by gaining electrons
ii.A metal can react with an acid to produce a salt a nonmetal doesnt
iii. A metal forms ionic compounds whilst nonmetals form covalent compounds
While riding a skateboard, Nina ran into a rough patch of pavement, but she thought she could ride right over it. Instead, the skateboard
stopped but Nina didn't. Her _______ kept her moving forward, so she fell off the skateboard.
Answer:
ineria
Explanation:
It is due to her inertia of motion that kept her moving forward.
We have Nina who is riding skateboard.
We have to determine why Nina fell off the skateboard on rough pavement.
What is Inertia ?A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
According to the question -
Before the rough patch, Nina was riding smoothly. However as soon as she enters the rough patch, the rough patch acts as an obstruction to the forward movement of skateboard. The skateboard and Nina are both moving with same velocity. The skateboard is in contact with the rough patch and as soon as the skateboard's motion is obstructed, the skateboard comes to rest but due to the inertia of motion, Nina continues to move with the same forward velocity. In this way, Nina falls ahead of skateboard.
Hence, it is due to her inertia of motion that kept her moving forward.
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A 45 kg wagon is being pulled with a rope that makes an angle of 38 degrees with the horizontal. The applied force is 410 N and the coefficient of kinetic friction between the wagon and the ground is 0.18.
Answer:
7.35m/s²
Explanation:
From the question we are not told what to find but we can as well find the acceleration of the wagon.
According to newton second law of motion
[tex]\sum F_x = ma_x\\Fm - Ff = ma_x\\Fm - \mu R = ma_x\\Fm- \mu mg = ma_x\\[/tex]
Fm is the moving force = 410N
[tex]\mu[/tex] is the coefficient of friction = 0.18
m is the mass = 45kg
g is the acceleration dur to gravity = 9.8m/s²
a is the acceleration of the wagon
Substitute the given data into the equation ang get ax
[tex]Fm- \mu mg = ma_x\\410 - (0.18)(9.8)(45) = 45a_x\\410 - 79.38 = 45a_x\\330.62 = 45a_x\\a_x = 330.62/45\\a_x = 7.35m/s^2\\[/tex]
Hence the acceleration of the wagon is 7.35m/s²
What is the mass of 52N shopping bag?
5.3 kg
5.3 N
509 kg
509 N
Weight = mass × acceleration due to gravity, so
52 N = m (9.8 m/s²)
m = (52 N) / (9.8 m/s²) ≈ 5.3 kg
please help me on the 1st bullet point for brainliest!
Answer:
thermal energy
Explanation:
How long will it take a fired shell from a cliff at an initial velocity of 800m/s at an angle 30 degree below the horizontal to reach the ground 150m below
Answer:
0.373 seconds. First, calculate the initial vertical velocity of the shell. 800sin(30) = 800*0.5 = 400 m/s Now the formula for the distance traveled is d = 400 m/s * T + 0.5A T^2 Substituting known values gives.
Explanation:
PLZ MARK ME BRAINLIST GUYSPLZ FOLLOW ME GUYSDensity of water is 1000kg/m3. Find out the amount of mass of 5m3 water
Answer:
5000 m³
Explanation:
density = mass / volume
mass = density × volume
mass = 1000 × 5
mass = 5000 ( kg )