Please help quickly!!!

State the basic rules to draw a vector quantity

Answer:

One should draw a diagram showing the placement of the charges.

When both charges of -Q are placed there will be no force in the vertical direction because of cancellation of forces.

A line from one corner of the square to the other makes an angle of 45 degrees,

2 cos 45 deg will be the force due to one charge.

2 * .707 = 1.41 N

So for both charges the force is (horizontal, vertical is zero)

2 * 1.41 = 2.82 N

b) is correct

The magnitude of the net force that acts on the center charge will be 2.82 N.Option B is correct.

When the matter is put in an electromagnetic field, it has an electric charge, which causes it to experience a force. A positive or negative electric charge can exist.

Charges that are similar repel each other, whereas charges that are dissimilar attract each other. The term "neutral" refers to an item that has no net charge.

Case 1 ;

One point charge +Q is placed at the center of a square, and a second point charge -Q is placed at the upper-left corner of the square.

When both charges of -Q are placed there will be no force in the vertical direction because of the cancellation of forces.

A line from one corner of the square to the other makes an angle of 45 degrees,

The force due to the one charge at the angle of the 45° will be;

[tex]\rm F_1 = 2 \times cos 45^0 \\\\ \rm F_1 =1.41 \ N[/tex]

For both the charge the net force is the double the force due to the one charge;

[tex]\rm F = 2 \times F_1 \\\\ \rm F = 2 \times 1.41 \\\\ F=2.82 \ N[/tex]

The magnitude of the net force that acts on the center charge will be 2.82 N.

Hence option B is correct.

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A common application of the wave/particle duality of ligt is in the technology of the solar panel.

One of the greatest breakthroughs of mordern physics is the establishment of the fact that light could both behave as a light and a particle. The ressearch into the particle nature of light gave rise to the phenomenon of the photoelectric effect.

Now, a very popular application of this is in the solar panel where light impinges on a metal panel which is connected to a battery that can be used to  store charges.

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Answer:

B) 1

Explanation:

There is not a coefficient before x, so automatically the answer is 1

Answer :-

Hi there!

[tex]\:\mathsf\red{Your\:answer\:is\:B.\:(1)}[/tex]

We know

Coefficient is the number or value which should be putten in front of the variable given.

Here,

'x' is the variable. Before x, there is no number mentioned. So the number would be 1.

[tex]\:\sf\purple{Hope\:this\:helps\:you!\::)}[/tex]

Answer:

Explanation:

The speed of light is 300,000,000 m/s. Shat is the frequency of microwaves with a wavelength of 0.01 meter

Answer:

12

Explanation:

the numbers are swapped so by conclusionn it is 12

Answer:

Measuring cup and graduated cylinder

Explanation:

These tools measure the volume of liquid matter. Measuring cups are used frequently in cooking and provide measurements generally in ounces and grams. A graduated cylinder is used in laboratories and in research and allows for a greater degree of precision in measuring the volume.

Based on data from world energy consumption, the estimated humanity’s current consumption of energy in one day is above 208 million joules per day.

Energy is the ability to do work. Therefore, energy consumption refers to the amount of energy used to do work.

Humans need energy for various purposes such as;

Due to rapid growth on population as well as technology, the human energy consumption is on the increase.

In 2020, the world primary energy consumption was 71,4 GJ per person for a world population of about 7.7 billion people.

Therefore, the estimated humanity’s current consumption of energy in one day is above 208 million joules per day.

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Answer:

500 gm

Explanation:

There may be some typos in your question post, here is my best guess of what you posted:

2.5 kg / 5000 kg /m^3 = .0005  m^3    water displacement

.0005 m^3 = 500 cm^3     for water this equals 500 gm

The zeroth law states that a simple, non-rotating black hole has uniform gravity at its event horizon. This is kind of like saying that such a black hole is at thermal equlibrium.

hope it helps...!!!

Answer:

R 44.4

Explanation:

Answer:

The car and the road have kinetic friction.

Explanation:

Because the car is getting a force of friction because of the kinetic energy caused by the engine.

For a system released from rest at θ = 0° when a constant couple moment M = 100 N.m is applied,  the speed of the 10-kg block is mathematically given as

V=4.33m/s

Generally, the equation for the workdone  is mathematically given as

W=T tehta<dtheta

W=100(90*\pi/180)

W=1.5707*100

W=1.57Nm

The change in potential energy across the pulley

dP=mgh

dp=10*9.81*111.8

dp=10.97J

For the thrid position, potential energy is

dP=mg(0.3)

dP=17.658J

dP'=17.658J-13.125

dP'=-4.532J

For 2nd position dP=0

The change in Kinectic energy across the pulley\

dK.E=0.5mv^2

For 1st

dk.E=0.5m(10)^2

2nd

dK.E=0.5Iw^2

dK.E=0.5(7.5*10^-3)(v^2/0.05)^2

3rd

2nd=3rd

In conclusion,

157.07=dKE+dP.E

157.07=5v^2+ (7.5*10^-3)(v^2/0.05)^2+10.97-4.53

V=4.33m/s

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Answer:

The answer is in the attachment

Explanation:

!!PLEASE PLEASE PLEASE PLEASE PLEASE MARK ME THE BRAINLIEST!!

Answer:

[tex]7.2 \times 10 {}^{11} newton[/tex]

Explanation:

[tex]the \: magnitude \: of \: the \: forc \: e \: can \: be \: calculated \: using \: coulombs \: formular \\ f = \frac{k \times q1 \times q2}{d {}^{2} } \\ f = \frac{9 \times 10 {}^{9} \times 100 \times 20 }{5 {}^{2} } \\ f = \frac{18000 \times 10 {}^{9} }{25 } \\ f = \frac{18000000000000}{25} \\ f = 7.2 \times 10 {}^{11} newton[/tex]

torque divided by moment of inertia = angular acceleration inertia = radius squared times mass = 7.533

16.2 ÷ 7.533 = 2.15

Answer:

correct

Explanation:

all the answer are good cuc

Answer:

Black holes:

A are the brightest objects in space.

B are the most well understood objects in space.

C pulse in a regular pattern.

D None of the choices are correct.

Explanation:

A black hole is a region of space where the pull of gravity is so strong that nothing can escape. It's a "hole" in the sense that things can fall in, but not out of it. It is "black" in the sense that not even light can escape.

I hope I helped you! :)

The number of electrons present in -2.8µC of excess electric charge is 1.75 × 10¹³ electrons

From the question, we are to determine the number of electrons present in the given charge

The number of electrons can be determined by using the formula,

[tex]n = \frac{q}{e}[/tex]

Where n is the number of electrons

q is the magnitude of charge

and e is the charge of an electron (e = 1.6 × 10⁻¹⁹ C)

From the given information,

q = 2.8 μC = 2.8 × 10⁻⁶ C

Putting the parameters into the equation, we get

[tex]n = \frac{2.8 \times 10^{-6} }{1.6 \times 10^{-19} }[/tex]

n = 1.75 × 10¹³ electrons

Hence, the number of electrons present in -2.8µC of excess electric charge is 1.75 × 10¹³ electrons

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The planets orbit the sun due to gravitational force of the sun on them which keep it in their orbits.

The first law of motion is also called Law of Inertia, the second law of motion is the Law of Mass and Acceleration, and the Third Law of Motion that have action and reaction forces.

The gravity of the Sun keeps the planets in their orbits. They stay and revolve in their orbits because there is no other force in the Solar System which can put pressure on them.

So we can conclude that planets orbit the sun due to gravitational force of the sun on them which keep it in their orbits.

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Answer:

-11459.478 N

Explanation:

mass of the ball = 152 g = 152 / 1000 = 0.152 kg

initial speed of the ball = 40.6 m/s

final speed of the ball = - 46.1 m/s

time of impact = 1.15 ms = 1.15 / 1000 = 0.00115 s

impulse, Ft = change in momentum = mv - mu = m (v-u)

F = m (v - u) / t = 0.152 kg ( -46.1 -40.6) / 0.00115 s = -11459.478 N

(a) The equation relating to the acceleration of the two masses is a = F/(m₁ + m₂).

(b) The acceleration of both masses is 2.5 m/s².

(c) The magnitude  of the tension in the string is 1.25 N.

The equation relating to the acceleration of the two masses is given as;

F - T = m₂a  ---- (1)

T = m₁a      ---- (2)

F - m₁a  = m₂a

F = m₁a  + m₂a

F = a(m₁ + m₂)

a = F/(m₁ + m₂)

→       ←      →

T       T      F

The acceleration is calcuated as follows;

a = F/(m₁ + m₂)

a = 5/(0.5 + 1.5)

a = 5/(2)

a = 2.5 m/s²

T = m₁a

T = 0.5 x 2.5

T = 1.25 N

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Answer:

The answer will be #3 and #4

Explanation:

Because the more the organisms live in the topsoil the weaker the soil would get and most likely that would happen and planting trees stop soil erosion because when the trees absorb water underground it makes the soil firm and tight just like the (abnormal) soil you would see near few feet near most trees.

Answer:

M = 50 kg / sec * 60 sec = 3000 kg       water that falls

PE = M g h     initial potential energy of water

PE = 3000 kg * 9.8 m/s^2 * 20 m = 588,000 joules of energy lost

Statement A  is not true in regard to the first law of thermodynamics. The first law of thermodynamics states that within an open system, the total energy of that system will remain constant. Is incorrect statement.

According to the Law of conservation of energy. Energy can not be created nor be destroyed, it can transfer from one to another form.

The total energy is the sum of all the energies present in the system. The potential energy in a system is due to its position in the system.

The wrong statement is the first law of thermodynamics states that within an open system, the total energy of that system will remain constant.

The first law of the thermodynamics is valid only for the closed system.

The first law of thermodynamics states that within a closed system, the total energy of that system will remain constant.

Hence, statement A  is not true in regard to the first law of thermodynamics

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From the laws of Newton, the balls experiences an equal force directed in opposite directions.

Collision is said to occur when on object bumps into another. Collisions are described by the law of conservation of linear mometum which ststes that momentum is neither created nor destroyed.

The question is incomplete hence we can not fully answer the question. However, from the laws of Newton, the balls experiences an equal force directed in opposite directions.

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Answer:

c thats the answer yep

Answer:

D.

Explanation:

The wire allows the current to follow the quickest path & will therefore follow the XY wire, restricting the energy source from reaching bulbs 1 and 2 which are beyond that wire.

A 43-kg rock is dropped from a 36 m, experiencing a Uniformly Accelerated Motion and falling to the ground 2.7 s later.

A Uniformly Accelerated Motion is a motion in which the acceleration of the object is constant.

A 43 kg rock is dropped from a 36 m tower. Given the only acceleration is that of gravity, we can calculate the time required to hit the ground using the following kinematic equation.

s = 1/2 × a × t²

t = √(2s / a)

t = √[2 × 36 m / (9.8 m/s²)] = 2.7 s

where,

A 43-kg rock is dropped from a 36 m, experiencing a Uniformly Accelerated Motion and falling to the ground 2.7 s later.

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Explanation:

Jacob Bekenstein, Brandon Carter, and James Bardeen(few new stuff were done by Stephen hawking)

Answer:

B The car has come to a stop and has zero velocity

Explanation:

I just did the Question