what is the equation of universal law of garavitation

Answer:

chris gets 960 and molly gets 1440

Explanation:

add the ratio up and divide

2+3=5

2400/5=480

480x2=960

480x3=1440

960+1440= 2400

Answer:

False

Explanation:

i got it right

The statement is false. Because, the place where, it is easy to hear soft voices is acoustically good. Acoustically strong rooms facilitates the sound waves of even soft pitches.

Acoustics is the study of sound waves. Engineers strictly consider the concepts of acoustics to design the auditoriums and theater rooms to filter the sound effects in perfect pitches.

The frequency of a sound wave is called pitch. Thus lower frequency waves are lower pitch and they are termed as soft voices. Soft voices are hard to hear.

However, building where  it is very easy to hear soft voices is acoustically good room. Therefore, the statement is false. The building is good in acoustics suitable for sound effects.

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Answer:

2 minutes or 120 seconds

Explanation:

The answer is 2 minutes or 120 seconds because 36 km is 36000 m and 36000 divided by 300 is 120, so the answer is 120 seconds, and converted to 2 minutes. Hope it helps!

This question involves the concepts of Newton's Second Law of Motion, Force, and acceleration.

The engineer must design an engine that can produce a force of "3100 N".

According to Newton's Second Law of Motion:

\(F = ma\)

where,

F = Force of engine = ?

m = mass carried by engine = mass of cart + mass of person = 75 kg + 80 kg

m = 155 kg

a = acclereration of the cart = 20 m/s²

Therefore,

\(F = (155\ kg)(20\ m/s^2)\)

F = 3100 N = 3.1 KN

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The attached picture shows Newton's Second Law of Motion.

The nearest galaxy to our home galaxy is about 2.5 million light-years away. You need to convert light-years into kilometers. One light-year is equal to about 9.5 trillion kilometers. To get your main answer, you can multiply 2.5 million by 9.5 trillion.

To get a better understanding of the process, check out the step-by-step explanation below:Step 1: Identify the conversion factor1 light-year = 9.5 trillion kilometersThis means that 1 light-year is equivalent to about 9.5 trillion kilometers. We can use this conversion factor to convert light-years to kilometers.Step 2: Convert light-years to kilometersTo convert 2.5 million light-years to kilometers,

we can multiply the value by the conversion factor. This gives us:2.5 million light-years x 9.5 trillion kilometers/light-year = 23.75 × 10¹² kilometers= 23,750,000,000,000 kilometersTherefore, the nearest galaxy to our home galaxy is approximately 23.75 × 10¹² kilometers away from us.

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Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

Given:

Δx = 2 m

v₀ = 0 m/s

a = 3 m/s²

a. Find v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (3 m/s²) (2 m)

v = 3.46 m/s

b. Find t

Δx = v₀ t + ½ at²

2 m = (0 m/s) t + ½ (3 m/s²) t²

t = 1.15 s

Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

VEGFR runs at a higher molecular weight than VEGF. In the position,  VEGFR is expected to appear band. Hence, option (c) is correct.

A chemical that binds to vascular endothelial growth factor (VEGF) receptors, which may be present on some cancer cells. This might stop cancers from forming the new blood vessels they require to grow.

Anti-VEGFR monoclonal antibodies of various sorts are being researched for the treatment of cancer. These chemicals fall within the categories of monoclonal antibodies and antiangiogenesis agents.

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It is important to minimize the internal resistance of each cell and use an external load that matches the total resistance of the circuit.

The power generated by a multi-loop cell depends on the total electromotive force (emf) and the total internal resistance of the cell.

A multi-loop cell is a type of battery or cell that consists of multiple cells connected in series, where the positive terminal of one cell is connected to the negative terminal of the next cell, and so on. This configuration increases the total voltage output of the cell while maintaining the same current output.

The power generated by the multi-loop cell is given by the formula:

P = VI

where P is the power generated in watts (W), V is the total voltage output of the cell in volts (V), and I is the total current output of the cell in amperes (A).

The total voltage output of the cell can be calculated by summing the individual voltages of each cell in the series. The total current output of the cell is determined by the total resistance of the circuit, which includes the internal resistance of the cell and any external load resistance.

The internal resistance of the cell also contributes to a voltage drop across the cell, reducing the available voltage output and decreasing the power generated by the cell. Therefore, to maximize the power output of a multi-loop cell, it is important to minimize the internal resistance of each cell and use an external load that matches the total resistance of the circuit.

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The majority of the brain waves detected during stage 2 sleep are theta waves.

Theta waves (3–8 Hz) have numerous advantages, ranging from easing chronic pain to easing anxiety. Dreaming, short-term memory, and a contemplative state are all correlated with theta brain waves. Meditation benefits greatly from theta waves' calming effects. The conscious brain is at its calmest in the alpha (8–12 Hz) range. According to experts, theta waves are crucial for memory formation and information processing. Additionally, when scientists gain more insight into how they function and how they relate to various forms of learning, this information could prove useful in figuring out the most effective methods for assisting learners. Children's brainwave frequencies normally oscillate in the Alpha and Theta brainwave cycles between these ages. Therefore, children should be able to listen to binaural beats at these frequencies without any harm.

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A remote-controlled car with 5000 joules of kinetic energy and a mass of 3.5 kg is moving with a velocity of 53.45 m/s

Kinetic energy refers to the energy possessed by a body with mass and some velocity. It has kinetic energy because it has some motion. It is expressed as

K = \(\frac{1}{2}mv^2\)

where m is the mass

v is the velocity

K is the kinetic energy

According to the question,

m = 3.5 kg

K = 5000 J

K = \(\frac{1}{2}*3.5*v^2\)

5000 = \(\frac{1}{2}*3.5*v^2\)

\(v^2\) = 2857.14

v = 53.45 m/s

The pace of the remote-controlled car is calculated as 53.45 m/s.

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The unit vector in the direction of the given vector is [-1, 1/2].

A unit vector in the direction of the given vector [−56/105], we need to normalize the vector by dividing each component by its magnitude.

The magnitude of the vector [−56/105] can be calculated as:

|[-56/105]| = \(\sqrt {((-56/105)^2)\) = \(\sqrt {(3136/11025)\) =\(\sqrt {(56^2 / 105^2\)) = 56/105

Normalize the vector, we divide each component by the magnitude:

[-56/105] / (56/105) = [-56/105] * (105/56) = [-1, 1/2]

a unit vector, we divide each component of the vector by its magnitude.

Dividing [-56/105] by (56/105) yields [-56/105] * (105/56) = [-1, 1/2].

A unit vector in the direction of the given vector is [-1, 1/2]. This means that the vector [-1, 1/2] has the same direction as the original vector [-56/105], but its length or magnitude is equal to 1.

Unit vectors are useful as they represent only the direction of a vector, allowing for easy comparison and calculation without concerns for the vector's scale or magnitude.

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Answer:

A satellite on non-equatorial orbit would show daily motion even if its period is exactly 1 sidereal day.

Explanation:

The kinetic energy of the ball is 450 J.

We have to note that the kinetic energy that the body has is the energy that the body has due to the fact that the body is in motion. This is why the object that undergoing kinetic energy must have a velocity of the object.

We have to note that the kinetic energy can be given using the formula;

KE = 0.5mv^2

KE = kinetic energy

m = mass of the object

v = velocity of the object'

Then we have;

KE = 0.5 * 4 * 15^2

KE = 450 J

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The first step is to convert the parallax angle of the star to distance. We can use the formula: parallax angle in arc seconds = (distance to star in parsecs)^-1 We can rearrange this equation to isolate distance: d = (parallax angle)^-1 Therefore, the distance to the star in parsecs is:

d = (0.0190 arcseconds)^-1 = 52.6 parsecs Next, we need to find the actual distance in meters. One parsec is equivalent to 3.09 × 10^16 meters. Therefore, the distance to the star in meters is: distance = (52.6 parsecs)(3.09 × 10^16 meters/parsec) = 1.63 × 10^18 meters Now, we can use the formula for time: d = vt Solving for time: t = d/v We are told to travel at half the speed of light, which is v = 0.5c, where c is the speed of light.

Therefore, the time to travel to the star is: t = (1.63 × 10^18 meters)/(0.5c) Using the speed of light, c = 3.00 × 10^8 m/s, we get: t = (1.63 × 10^18 meters)/(0.5 × 3.00 × 10^8 m/s)t ≈ 10.9 years Therefore, it would take about 10.9 years to travel to the star if traveling at half the speed of light.

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Answer:

v = 1  i ^ m / s,   v = 1 m / s

Explanation:

In this problem we show the difference between vectors and scalars.

The average speed is

          v = Δx / Δt

The bold are vectors            

          Δx = 20-10 = 10 i^  m

           v = 10/10

           v = 1  i ^ m / s

the unit vector indicates that the velocity is on the x-axis

The average speed is

           v =Δx / Δt

           v = 10/10

           v = 1 m / s

in this case we have a scalar

Using Figures A and B The magnitude and direction of buoyant force is 1.2N upward

Weight of object in water(F1 )= 25 N , Weight of object in air(F2) = 26.2 N

Direction and magnitude of buoyant force(FB)

We know that the spring balance measures the net normal force(N) acting on object.

In figure (B), the forces acting on object are,

Gravitational force acting in downward direction.

Tension acting in upward direction.

Hence the net force equation for object is,

Normal force = Gravitational force

Fg = F2 = 26.2 N ---(1)-

Therefore the weight(or gravitational force on object) of object is 26.2 N

Now in figure (A), the forces acting on object are,

Gravitational Force(Fg) acting in downward direction.

Normal force(F1) acting in upward direction.

Buoyant force (direction unknown)

Hence the net force equation for object is

Normal Force = Gravitational Force + Buoyant force

F1 = Fg + FB

FB = F1 - Fg = 25 - 26.2 = -1.2 N ----(2)--( negative sign indicates that the direction of buoyant force is                                                                                 opposite to the direction we considered earlier)

FB = 1.2 N (in upward direction)

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Answer: c) The line shows a change in speed if its angle changes.

I'm not sure

Explanation:

Answer:

See below!

Explanation:

Force = F = 50 N

Angle = θ = 38.8°

Horizontal and vertical components of force = ?

\(F_x=Fcos \theta\\\\F_y=Fsin \theta\)

Horizontal component of force:

\(F_x=(50)cos38.8\\\\F_x=(50)(0.77)\\\\F_x\approx 38.9\)

Vertical component of force:

\(F_y=(50)sin(38.8)\\\\F_y=(50)(0.62)\\\\F_y\approx 31.3\\\\\rule[225]{225}{2}\)

Answer:

hen dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance.

Explanation:

Answer:

the two objects are in thermal equilibrium

Explanation:

thermal equilibrium us the state where two bodies or objects have the same amount of temperature thus no heat conduction

The situation results in the least attraction between two magnets is option B, north pole of one magnet far away from the south pole of other magnet.

Magnetic pole is the place where the magnetic field's strength is greatest at either end. A bar magnet hung in the magnetic field of the Earth automatically points northward and southward.

A north magnetic pole is any pole that seeks the north, such as the north-seeking pole of this type of magnet. A south magnetic pole is the south-seeking pole or any pole that resembles it. Different magnets' unlike poles pull together while their similar poles repel one another.

Therefore, north pole of one magnet attracts the south pole of other magnets. Similarly two north poles or two south poles repels away. If the poles are far away, then the attractive force between them will be less.

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Answer:

I think it is the third one

Explanation:

Everything about it is flipped

The electromagnets with poles that are reversed from the electromagnet  is according to image C.

A substance which is negative charged at one end and positive charged at another end creating the magnetic field around it.

A bar is a magnet which can attract the particle which are charged. It has two poles North and South.

The electromagnet is find in the electric motor. In the motor, loop made up of conductor is rotated by the effect of magnetic field of permanent magnet.

An electromagnet is a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.

When the poles are reversed, then the direction of current flow is also reversed.

Thus, the correct option is C.

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Answer:

X-rays have so much energy they can go right through your muscles and fat.

Explanation:

There are actually more ways to fill in those two blanks... Different parts of the body absorb x-rays in varying degrees, but soft tissues (like skin, muscles, fat, and organs) allow most of the X-rays to pass through.

Answer:

Explanation:

The mass of the object can be found by using the formula

\(m = \frac{f}{a} \\ \)

where

f is the force

a is the acceleration

From the question we have

\(m = \frac{200}{500} = \frac{2}{5} \\ \)

We have the final answer as

Hope this helps you

Answer:

well his enemies accused him of attacking scripture and meddling affairs

Explanation:

pls tell me if is right

The variables in the experiment are :

The variables in the experiment are :

Independent variables are variables which are varied in an experiment in other to cause a change in the dependent or measured variable. An experiment may have more than one independent variable.

Dependent variable is also called the measured variable. This is the variable which changes as the independent variables are varied. An experiment will have only one dependent variable.

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Answer:  The dependent variable is the time while the independent variable is the Length.

From the given question, the variables to deal with are

Angle of the swing

Time of swing

Length of swing and

mass of the weigh attached to the swing

Let us use simple harmonic motion to analyze the scenario by using dimension of physical quantity for a small mass suspended from a long thread.

according to SHM formula, w = \(\sqrt{g/L}\)

where the angular speed w = angle turned / the time (Period)

At the end of the derivation of the expression relating to the time, length, angle and mass

T = K\(\sqrt{L/g}\)

Time T does not depend of mass.

Therefore, The dependent variable is the time while the independent variable is the Length.

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Answer:

u would need to calculate both K. E and P. E

Explanation:

for K. E use = (mv^2)/2

for P. E use = m×g×h ;

where g is acceleration due to gravity and it's value is 10m/s^2

Answer:

Explanation:

As an example, ice on steel has a low coefficient of friction – the two materials slide past each other easily – while rubber on pavement has a high coefficient of friction – the materials do not slide past each other easily. The coefficients of friction ranges from near 0 to greater than 1.

If the force on an object is doubled, the distance it must be moved so that the work done remains the same would be half of the original distance.

If the force on an object is doubled, the distance it must be moved so that the work done remains the same is halved.

This is because work done (W) is equal to the force (F) applied to an object multiplied by the distance (d) it is moved:

W = F x d

If the force is doubled, the work done would also double, assuming the distance moved remains constant. To keep the work done the same, the distance moved would have to be halved, since:

W = F x d

2W = 2F x d/2

2W = F x (d/2)

So, if the force on an object is doubled, the distance it must be moved so that the work done remains the same would be half of the original distance.

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Some situations where charges occur naturally are lightning during thunderstorms.

There are two kinds of electric charge: positive and negative (commonly conveyed by protons and electrons individually). Examples of the types of charges are subatomic flecks or the particles of matter: Protons are positively charged. Electrons are negatively charged. Neutrons have naught charges.

Due to the apparent additional nature of the charge, the total electric charge of such a structure would be equal to the algebraic summation of the electric charges present all around the structure or system. The rule of superimposition of electric charge explains the compelling nature of the charge.

So we can conclude that Charging by Friction​​ When two things are rubbed against each other

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Lightning, Friction,Electrostatic Induction, Piezoelectricity, Thermoelectricity, Photoelectric effect and Cosmic ray

Lightning: During a thunderstorm, charges can build up in the atmosphere due to the movement of water droplets and ice particles. This can result in a lightning strike, which is a discharge of electricity through the atmosphere.

Friction: When two materials rub against each other, electrons can be transferred from one material to the other, resulting in a separation of charges. This is known as the triboelectric effect.

Electrostatic Induction: Electric charges can be induced on an object by bringing it near a charged object without making contact.

Piezoelectricity: Certain materials, such as quartz crystals, can generate a voltage when they are under mechanical stress, resulting in the separation of charges.

Thermoelectricity: A temperature difference between two materials can cause a flow of charge carriers, resulting in a voltage difference between the two materials.

Photoelectric effect: When light hit a metal surface , electrons are emitted from the surface and produces charge.

Cosmic ray: Cosmic rays are high-energy particles that come from outer space, which can ionize atoms and molecules in the atmosphere, resulting in the separation of charges.

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