Three identical very dense masses of 7100 kg each are placed on the x axis. One mass is at x1 = -130 cm , one is at the origin, and one is at x2 = 360 cm .What is the magnitude of the net gravitational force Fgrav on the mass at the origin due to the other two masses? Take the gravitational constant to be G = 6.67*10
−
11
N
.
m
2
/
k
g
2
.

Two identical planets orbit a star in concentric circular orbits in the star's equatorial plane. The planet that is farther from the star must have a greater period than the planet that is closer to the star. The correct answer is option(b).

The period of the planet is directly proportional to the cube of its distance from the star. As a result, when planets are equidistant from a star, their periods will be equal.As a result, the planet that is farther from the star must have a greater period than the planet that is closer to the star.

A planet's gravitational mass is not influenced by the planet's distance from the star, so alternatives c and d can be ruled out. Similarly, the planet's universal gravitational constant is not affected by the planet's distance from the star, so option e can also be ruled out. The planet's period, on the other hand, is influenced by the distance from the star and the planet's mass. As a result, the option a can be ruled out.

To know more about planets refer to:

https://brainly.com/question/14323720

#SPJ11

Answer:

In a permanent magnet, the magnetic field comes from the motion of the electrons inside the material, or, more precisely, from something called the electron spin. The electron spin is a bit like the Earth spinning on its axis. The magnetic field is a vector, the same way the electric field is.

Explanation:

Answer:

\(momentum =mv \\ 50 = 5v \\ v = \frac{50}{5} \\ v= 10m. {s}^{ - 1} \)

When two forces act on an object, one proportional to v (velocity) and the other proportional to v2 (velocity squared), it is important to consider which force will dominate at high speeds.

At lower speeds, the force proportional to v may have a greater impact on the object's motion. However, as the object's velocity increases, the force proportional to v2 will become increasingly dominant. This is because the force proportional to v2 will increase at a faster rate as the object's speed increases, while the force proportional to v will increase at a slower rate.

To understand why this happens, we can look at the mathematical relationship between force and velocity. The force proportional to v is given by F = kv, where k is a constant of proportionality. The force proportional to v2 is given by F = kv2. As the object's velocity increases, the value of v2 will increase much faster than the value of v. This means that the force proportional to v2 will increase at a much faster rate than the force proportional to v.

Therefore, at high speeds, the force proportional to v2 will dominate over the force proportional to v. This means that the object will experience a much greater impact from the force proportional to v2, and this force will have a greater influence on the object's motion.

It is important to take this into account when analyzing the behavior of objects moving at high speeds.

For more such questions on velocity

https://brainly.com/question/80295

#SPJ11

Hydrogen and all of the other elements in orange boxes are non metals and is denoted as option D.

These are elements which lack metallic properties and usually have low thermal and electrical conductivity.

In the periodic table, they are represented by orange together with hydrogen hence the reason why it is the most appropriate choice.

Read more about Non metal here https://brainly.com/question/23938148

#SPJ1

Answer:

Explanation:

A lot.  That's why he was one of Boston's star hitters.

m = 0.15 kg

a = 3.0 * 10^4

F = ?

F = 0.15 * 3*10^4

F = 0.45 * 10^4

F = 4.5 * 10^3 Newtons

You should always express scientific notation as a number between 1 and 10 or 1 < x < 10. The power will determine the exact value of the number expressed as a scientific notation.

Answer:

825m

Explanation:

u=20m/s

a=0.5m/(s)^2

s = ut + 1/2a(t)^2

s = 20(30) + 1/2(0.5)(30)^2

s = 600 + 225

s = 825m

Answer:

as we know that

S=ut+1/2(at*t)

S=20*30+1/2(0.5*30*30)

S=600+225

S=825

If a hydraulic press multiplies a force by a 100, This multiplication is done at the expense of  energy, which decreases by a factor. Option B is correct.

A hydraulic press multiplies force by applying pressure to a confined liquid, such as oil or water. This pressure is transmitted equally throughout the liquid, resulting in a larger force being exerted at the output piston than the input piston.

However, this multiplication of force comes at the expense of energy, which decreases by a factor due to the conversion of some of the energy into heat or other forms of energy during the process. The distance through which the force acts and the time over which the force acts remain the same, so they are not the source of the multiplication of force.

Similarly, the mechanism providing the force is not affected by the hydraulic press. Thus, the correct option is D.

To know more about force, refer here:

https://brainly.com/question/13820506#

#SPJ11

Using the opposite pole of the magnet would reverse the direction of the electric current generated through electromagnetic induction.

Whilst you opposite the path of the contemporary flowing within the cord, the north and south poles also are reversed. When you reverse the contemporary once more, the north and south poles reverse again. In fact, on every occasion the modern is reversed, the north and south poles will trade places.

A magnet and a coil of wire can be used to provide an electric-powered modern-day. A voltage is produced while a magnet moves into a coil of cord. This procedure is known as electromagnetic induction. The direction of the caused voltage is reversed while the magnet is moved out of the coil once more.

Learn more about electromagnetic induction here https://brainly.com/question/26334813

#SPJ2

Answer:

100% C

Explanation:

The final velocity of the ball after 4s will be 5.25m/s2.

Velocity of a body is its speed and the direction in which it is moving.

Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time (e.g. 60 km/h northbound).

It can also be described as the instantaneous rate of change of the body's distance traveled, and the direction in which the distance is changing.

Velocity is a vector quantity as it has both magnitude and direction.

From the question;

displacement, s = 21m

time = 4s

Velocity = displacement / time

Velocity = 21/4

Velocity = 5.25m/s2

Hence, the ball would move with a velocity of 5.25m/s2.

Learn more about velocity:https://brainly.com/question/80295

#SPJ1

Extra care should be taken while installing the Liquidtight flexible nonmetallic conduit in such weather conditions. Option(C) is correct.

It is a limit for Liquidtight flexible nonmetallic conduit that it cannot be used in direct sunlight unless marked for this application. Liquidtight flexible nonmetallic conduit can only be used outdoors if it is explicitly marked for outdoor use and is exposed to sunlight without causing damage.

Any exposure to direct sunlight may cause the conduit to degrade, which may result in safety concerns. It can become brittle in extremely cold temperatures: It is a limit of Liquidtight flexible nonmetallic conduit that it can become brittle in extremely cold temperatures. It is a limitation of Liquidtight flexible nonmetallic conduit that, in extremely cold weather, it may become brittle and lose its capacity to flex.

When the temperature drops below a certain level, the material begins to harden, making it vulnerable to cracking or shattering. Therefore, extra care should be taken while installing the Liquidtight flexible nonmetallic conduit in such weather conditions.

To know more about Sunlight visit :

https://brainly.com/question/30035680

#SPJ11

Answer:

The outside layer is the wettest.

Explanation:

Answer:

Although expansion seems to imply a Big Bang, no other specific predictions of the Big Bang theory were tested and confirmed until the 1960s.  

Explanation:

Answer:

Today, the consensus among scientists, astronomers and cosmologists is that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos.  This is known as The Big Bang Theory. For almost a century, the term has been bandied about by scholars and non-scholars alike. This should come as no surprise, seeing as how it is the most accepted theory of our origins.

;)

Answer:B

Explanation:

They find that the gravitational force on the spaceship is inversely proportional to the distance from the Earth. The correct option is B.

The gravitational pull would be stronger if the gap were cut in half. Coulomb's law, states that the gravitational force between two items in the universe is directly proportional to the product of the masses of the objects.

And inversely proportional to the distance between them is used to calculate the gravitational force between two objects in the universe. Whether there is a body there or not, gravity is the force between two bodies.

Everybody in the cosmos is drawn to every other body by a force that is directly inversely correlated to the square of the distance between them and directly inversely correlated to the product of their masses.

Therefore, the correct option is B. inversely proportional to the distance from the Earth.

To learn more about gravitational force, refer to the link:

https://brainly.com/question/24783651

#SPJ2

The frequency of system A can be determined from the graph by finding the reciprocal of the period (the time it takes for the mass to complete one cycle).

Frequency is a measure of how often something happens over a given period of time.

Based on the graph, the period of system A is 2.0 seconds, so the frequency of system A is 0.5 Hz.

The first time at which the mass of system A has maximum speed while traveling in the upward direction is 0.5 seconds, as indicated on the graph.

The period of system B can be determined from the graph by finding the time it takes for the mass to complete one cycle. Based on the graph, the period of system B is 4.0 seconds.

The first time at which the mechanical energy of system B is all potential is 0.0 seconds, as indicated on the graph.

If both systems have the same mass, the ratio Ka /Kb of their spring constants can be determined by looking at the slope of the curves. The steeper the curve, the higher the spring constant Ka. Therefore, the ratio Ka /Kb would be 2, as the slope of system A is twice as steep as that of system B.

To learn more about frequency
https://brainly.com/question/27151918
#SPJ4

Answer:

Below

Explanation:

Force downplane from the box on the incline =  mg sin 25 = 41.4 N

Force of friction = normal force * coeff static friction (if not moving)

                = mg cos 25  * .50 =44.5 N   (max)

Force up the plane from the 2kg bucket tension= mg = 2 * 9.81 = 19.62 N

This is a net downplane force of 41.4 - 19.62 N = =21.8N which is not enough force to overcome the static friction max....so the box does not move

So in this case the friction force = 21.8 N  UP the plane  

A jumbo jet can fly its whole length in 20 seconds at a certain speed and has a 284-foot length. The big jet taxied completely past a 710-foot-long hangar in 70 seconds while travelling at the same speed.

In physics, you can get average speed by dividing the total distance travelled by the total time needed to travel that distance. Speed is the rate of change in an object's position, expressed in metres per second. The rate at which an object travels a distance is considered its speed. High speed describes an object that is travelling quickly.

P should represent the plane's length in feet.

20p = (710+p)/20p = 14200+20p 50p = 14200 p = 284ft

Learn more about speed here

https://brainly.com/question/28224010

#SPJ4

Answer:

The meaning of life, or the answer to the question: "What is the meaning of life?", pertains to the significance of living or existence in general. Many other related questions include: "Why are we here?", "What is life all about?", or "What is the purpose of existence?"

The motorcycle's average velocity is 30 km/hour.

To determine the motorcycle's average velocity, we need to calculate the slope of the line on the position-time graph. The slope represents the change in position over time, which is the definition of velocity.
To do this, we can use the formula for slope:
slope =\frac{ (change in y) }{ (change in x)}
In this case, the change in y (position) is 150 - 0 = 150 km, and the change in x (time) is 5 - 0 = 5 hours.
So,
slope = \frac{150 km }{ 5 hours }= 30 km/hour
Therefore, the motorcycle's average velocity is 30 km/hour.
It's important to note that the velocity is constant since the position-time graph is a straight line. This means that the motorcycle is traveling at a steady speed of 30 km/hour in a southward direction.

learn more about average velocity Refer: https://brainly.com/question/862972

#SPJ11

Answer:

30-N

Explanation:

Because they are both acting on an object going opposite directions, then you simply subtract the 15 from 45 as 45N of force is stronger than 15N of force.

The net force on the object is 30 Newton due to these two opposite forces.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Here, a 15-N force and a 45-N force act on an object in opposite directions.

The net force on the object  due to these two opposite forces is = 45 N - 15 N

= 30 N.

Learn more about force here:

https://brainly.com/question/13191643

#SPJ6

The angle at which the fish sees the sun would be equal to the angle of incidence, which is 42.0°.

Assuming that the surface of the lake is flat and acts as a mirror, we can use the law of reflection, which states that the angle of incidence equals the angle of reflection.  

However, if the surface of the lake is not flat and the light undergoes refraction, the angle at which the fish sees the sun would depend on the refractive index of the water. In this case, we would need additional information, such as the refractive index of the water and the angle at which the light enters the water, to calculate the angle at which the fish sees the sun.

for more such questions on incidence
https://brainly.com/question/31973034
#SPJ11

The magnitude of the force is 2772 N/C².

The magnitude of the force a 22 μC charge exerts on a 3.5 mc charge 50 cm away can be found using Coulomb's law. Coulomb's law states that the magnitude of the electrostatic force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
The formula for Coulomb's law is F = kq₁q₂/r², where F is the magnitude of the force, k is Coulomb's constant (9 × 10⁹ Nm²/C²), q₁ and q₂ are the charges, and r is the distance between the charges.
Plugging in the given values, we get:

F = (9 × 10⁹ Nm²/C²)(22 × 10⁻⁶ C)(3.5 × 10⁻⁶ C)/(0.5 m)²

F = (9 × 10⁹ Nm²/C²)(77 × 10⁻¹² C²)/(0.25 m²)

F = (693 × 10⁻³ Nm²/C²)/(0.25 m²)

F = 2772 N/C²

To learn more about Magnitude :

https://brainly.com/question/24256733

#SPJ11

Answer:

C is correct

Explanation:

The statement that best describes how the phase of the Moon changes from a full moon to a new moon is as follows:

Thus, the correct option for this question is C.

The different phases of the moon may significantly include the new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter, and waning crescent. This cycle of phase change of the moon repeats once a month.

The Earth completes its one rotation around the sun in 365.25 days. While the moon completes its one rotation around the Earth in 29.5 days.  The rotation of the moon around the earth leads to phase change of it. This is because when the moon rotates around the sun, it directly or indirectly causes its exposure to the sun where its phase changes.

In the diagram above, when there is a full moon, the earth is present between the sun and the moon. But when a new moon arises, the moon is present between the earth and the sun.

Therefore, the correct option for this question is C.

To learn more about the Phases of the moon, refer to the link:

https://brainly.com/question/2626244

#SPJ7

The difference in rotational displacement caused by two forces of 30 N with the same lever arm can be attributed to the varying moments of inertia of the object.

The rotational displacement of an object depends on the applied force and the object's moment of inertia. The moment of inertia represents the object's resistance to rotational motion and depends on its mass distribution. In the given scenario, the force of 30 N causes the object to rotate pi radians, while another force of 30 N with the same lever arm causes a rotation of (2/3) pi radians. This difference in rotation can be explained by the fact that the moments of inertia of the object are different in the two cases. The object's moment of inertia influences how it responds to rotational forces, and objects with different mass distributions can have different moments of inertia. Therefore, even with the same applied force and lever arm, the resulting rotational displacement can vary based on the object's moment of inertia.

learn more about displacement Refer: https://brainly.com/question/11934397

#SPJ11

Answer:

Yes

Explanation:

A system is said to be in equilibrium when the state of the system is balanced such that there is an equal amount of powers acting in opposite direction

For an object moving at a constant speed of 1000 m/s, given that, according to Newton's first law of motion, a body will continue in motion or at rest unless acted by a force, the object continue moving indefinitely, then the motion  in the object is in equilibrium or balanced or in agreement with the general external surrounding of the object.

To convert the ideal-gas equation to relate Ppsig, Vft³, nlb-mole, and T°F and the total amount of gas is calculated by converting the moles of CO and N to lb-mole and to estimate the temperature needed to increase the gas pressure to 3000 psig, Convert the obtained temperature in K to °F.

The equation relating P (psig), V (ft³), n (lb-mole), and T* (°F) is:

P = 14.7 * P(atm), V = 28.3168 * V(L), n

= 2.20462 * n(mol), and T*

= (9/5) * T(K) - 459.67 and to calculate the total amount of gas in lb-mole, multiply the number of moles of CO by its molar mass and convert to lb-mole and to estimate the temperature in °F required to increase the gas pressure to 3000 psig.

(a) To convert the equation, we need to apply the following conversions:
- To convert P from atm to psig, multiply by 14.7 (since 1 atm = 14.7 psig).
- To convert V from liters to ft³, multiply by 28.3168 (since 1 liter = 0.0353 ft³).
- To convert n from mol to lb-mole, multiply by 2.20462 (since 1 mol = 2.20462 lb-mole).
- To convert T from K to °F, use the conversion formula:

T* = (9/5) * T(K) - 459.67.

(b) To calculate the total amount of gas in lb-mole, multiply the number of moles of CO by its molar mass (using the periodic table) and convert to lb-mole by multiplying by the molar mass of CO (28.01 lb/lb-mol). To calculate the mass of CO in lb, multiply the number of moles of CO by its molar mass (28.01 g/mol) and convert to lb by dividing by 453.59237 g/lb.

(c) To estimate the temperature in °F required to increase the gas pressure to 3000 psig, rearrange the ideal gas equation to solve for T*. Substitute the known values: P = 3000 psig (pressure limit), V = 3.5 ft³ (volume), n = 30.0 mole (number of moles), and solve for T*. Note that this estimate may not be accurate at high pressures.

To more about pressure visit:

https://brainly.com/question/32099691

#SPJ11

Answer:

a on edge

Explanation:

Explanation:

a.)

Reactants : CO2 (carbondioxide) + H2O (water)

Products : O2 (oxygen) + C6H12O6 (glucose)

b.)

Reactants: Na ( Solid Hydrogen) + H2O (water)

Products: H2 (hydrogen gas) + NaOH (sodium hydroxide)