QUICK QUESTION: What forces are acting upon a flying baseball when someone throws it?

Answer:

force increases

Explanation:

Newton's law of universal gravitation states that the force of attraction (gravity) acting between the Earth and all physical objects is directly proportional to the Earth's mass, directly proportional to the physical object's mass and inversely proportional to the square of the distance separating the Earth's center and that physical object.

According to Newton’s law of universal gravitation, as the mass or one or both bodies increases, the force of attraction between the bodies increases.

Mathematically, this is given by the Newton's Second Law of Motion;

Force = mass * acceleration.

The distance the 2.0 N object will move, given that 35 J of energy is used to move it is 17.5 m

Work done is defined as the product of force and the distance moved in the direction of the force. Mathematically, it is expressed as:

Work done (Wd) = force (F) × distance (d)

Using the above formula, we can detertmine the distance the object will move as illustrated below:

Work done (Wd) = force (F) × distance (d)

35 = 2 × distance moved

Divide both sides by 2

Distance moved = 35 / 2

Distance moved = 17.5 m

Therefore, we can conclude from the calculation made above that the distance moved is 17.5 m

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Complete question:

You use 35 J of energy to move a 2.0 N object. How far did you move it?

Answer:

The graph demonstrates two major trends. First, employment numbers began to drop sharply in 2008. These numbers fell until 2010, when they reached a trough. Employment began to rise again after this point and continued to rise into 2013.

Explanation:

Answer:

empty space

Explanation:

Our solar system comprises of the sun as the star, the planets, the dwarf planets, various moons, and plenty of asteroids, comets, and meteoroids. However, the majority part of the solar system consists of a void or empty space. These empty spaces basically composed of planetary dust and gas.

Hence, it can be concluded that Most of our Solar system is composed of "Empty Spaces."

A ball hits a wall going 10 m/s, and bounces off going 8 m/s. the coefficient of restitution is

Given that

To find

So according the question

We have

                       u = 10 m/s.

                      v = 7 m/s.

Now, We have to find the coefficient of restitution

We know that,

         \(n = \frac{velocity \;\;of \; \;separation}{velocity \;of \;approach}\)

So,

             \(n = \frac{8}{10}\)

              n = 0.8

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Answer:

A

Explanation:

Answer:

B

Explanation:

Magma rising up from the mantle at a divergent boundary, I got this question and I got it right.

(a) The centripetal acceleration (a) if the radius is doubled without changing the particle's speed is 3.4 m/s².

(b) The centripetal acceleration (a) if the speed is doubled without changing the circle's radius is 27.2 m/s².

(a) The centripetal acceleration is given by the formula a = v²/r, where v is the speed and r is the radius of the circle.

If the radius is doubled (2r) without changing the speed, the centripetal acceleration becomes a' = v²/(2r).

Since the speed remains the same, the numerator v² remains constant. However, the denominator doubles, resulting in the centripetal acceleration being halved.

Therefore, a' = a/2 = 6.8 m/s² / 2 = 3.4 m/s².

(b) Again using the formula a = v²/r, if the speed is doubled without changing the radius, the new speed becomes 2v.

Plugging this into the formula, we get a' = (2v)²/r = 4v²/r.

Comparing this with the original formula, we can see that the centripetal acceleration is quadrupled.

Therefore, a' = 4a = 4 * 6.8 m/s² = 27.2 m/s².

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The average acceleration of the treadmill during this period is -0.0035 m/s².

The average acceleration of an object refers to the rate at which the velocity of the object changes with time.

The average acceleration of the treadmill during this period is calculated as follows;

a = Δv/Δt

where;

a = (v2 - v1) / (t)

The given parameters;

Substitute the given parameters and solve for the average acceleration.

a = (-6.5 - - 1.2) / 1500

a = (-6.5 + 1.2) / 1500

a = -0.0035 m/s²

Thus, the average acceleration of the treadmill during this period is -0.0035 m/s².

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This question can be solved using the equations of motion. There are two scenarios where the equations of motion can be used. The first scenario is the free-fall motion of the piece of bread. The second scenario is the uniformly accelerated motion of the bird.

The acceleration of the bird is  "a = 26.13 m/s²".

First, we will calculate the time taken by the bread to fall 3 m. Using the second equation of motion for this free-fall motion:

\(h = v_it + \frac{1}{2}gt^2\)

where,

h = height fall = 3 m

vi = initial velocity = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = ?

Therefore,

\(3\ m = (0\ m/s)t+\frac{1}{2}(9.8\ m/s^2)t^2\\t = \sqrt{\frac{(3\ m)(2)}{9.8\ m/s^2}}\\\\t = 0.78\ s\)

The bird took the same time to catch the bread. Now applying the second equation of motion to the bird's motion:

\(s = v_it + \frac{1}{2}at^2\)

where,

s = distance covered by the bird = 5 m + 3 m = 8 m

vi = initial velocity of the bird = 0 m/s

a = acceleration of the bird = ?

t = time taken = 0.78 s

Therefore, using these values we get:

\(8\ m = (0\ m/s)(0.78\ s)+\frac{1}{2}a(0.78\ s)^2\\\\a = \frac{16\ m}{(0.78\ s)^2}\)

a = 26.13 m/s²

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B

Explanation:

yeah but I don't know what

Viewed from the same place, it will lag by about 4 minutes per day.

7 days later puts it at roughly 8:28 PM.

The centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8). Formulae used to find the centre of mass are as follows:x bar = (1/M)*∫∫∫x*dV, where M is the total mass of the system y bar = (1/M)*∫∫∫y*dVwhere M is the total mass of the system z bar = (1/M)*∫∫∫z*dV, where M is the total mass of the systemThe region bounded by y=9-x^2 and y=5/2x, and the z-axis is shown in the attached figure.

The two curves intersect at (-3, 15/2) and (3, 15/2). Thus, the total mass of the region is given by M = ∫∫ρ*dA, where ρ = density. We can assume ρ = 1 since no density is given.M = ∫[5/2x, 9-x^2]∫[0, x^2+5/2x]dAy bar = (1/M)*∫∫∫y*dVTherefore,y bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]y*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]ydA...[1].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore,y bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]y*dxdy...[2].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.Substituting the values and evaluating the integral, we get y bar = (1/M)*[(9-5/2)^2/2 - (9-(15/2))^2/2]= (1/M)*(25/2)...[3].

Also, the x coordinate of the center of mass is given by,x bar = (1/M)*∫∫∫x*dVTherefore,x bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]x*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]xdA...[4].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore, x bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]xy*dxdy...[5].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.

Substituting the values and evaluating the integral, we get x bar = (1/M)*[63/8]= (1/M)*(63/8)...[6]Thus, the centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8).

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The cost of using 50 W for one day or 24 hours is  dollar 0.12. The cost of using 800 W for 1 hour is 0.08 dollar.

Power is the rate of work done energy of  an object. Given that the cost of using 1 KWhr energy is dollar 0.10.

Then cost of using 50 W  or 0.05 KW in 24 hours is

0.05 × 24 ×  0.10  = 0.12 dollar

Cost of using 800 W or 0.08 KW per hour is 0.08 KWhr × 0.10 = dollar 0.08

Similarly, the cost of using 150 W in one month is find as follows:

150 W = 0.15 KW

energy used  = 0.15 × 30 × 24 hrs

cost = 0.15 × 30 × 24 hrs × 0.10 = dollar 10.8

The energy causing a cost of 2.5 dollar is 2.5/0.10 = 25 KWhr

power = 25 KWHr/24 hrs = 1.04 KW.

The energy causing a cost of 4 dollars is 4/0.10 = 40 KWhr

power =40 KWHr/24 hrs = 1.6 KW.

The energy causing the cost of 3 dollars  = 3/0.10 = 30 KWhr

then time = 30/100 W = 0.3 hr.

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Answer:

Yes

Explanation:

The magnitude of a physical quantity depends on system of units chosen.

Answer:

no such thing i dont think

Explanation:

Answer:

Polygraph tests are used to determine whether someone is lying or not, and display the physical signs someone is showing when they speak to be interpreted. Polygraphs measure things like heartbeat, breathing rate, and electrical conductivity of the skin, which are signs that get more and more severe when someone tells major lies or lies a lot. Polygraph tests are pretty unreliable because everyone shows different reactions to speaking depending on how anxious they are or any other medical condition, which could falsely incriminate them, but I think it is still important to determine the signs someone displays to use as a datapoint later on in the trial. For those reasons, they should still be used but shouldn't be relied on as heavily.

Explanation:

Various examples of drag, elastic and tension forces are mentioned.

Elastic force is a type of force that occurs when an object is stretched or compressed, and it resists the deformation of the object. This force is proportional to the amount of stretching or compression, and it causes the object to return to its original shape when the force is removed.

Tension force is a type of force that is transmitted through a string, rope, wire or cable when it is pulled tight by forces acting at either end. This force acts to transmit the tension through the length of the string, keeping it taut and preventing it from breaking.

A person biking into a headwind experiences air resistance, which is a type of drag force.

A stretched rubber band or a compressed spring both exhibit elastic force.

A person pulling a wagon by a rope exerts a tension force on the rope. Another example of tension force can be observed when a weight is hung from a rope or chain, creating tension within the rope or chain.

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Answer: A viscous fluid is thicker and more difficult to pour than a typical liquid, while a liquid is a substance that has a definite volume but no fixed shape and can flow to conform to the shape of its container. ✅

PLEASEEEE GIVE BRANLIEST

The amount of charge that can be placed on a capacitor depends on the capacitance, which is determined by the area of each plate.

The capacitance of a capacitor is given by the formula:

C = ε0 * (A / d)

Where:

C is the capacitance,

ε0 is the permittivity of free space (a constant value),

A is the area of each plate,

d is the separation between the plates.

To determine the amount of charge, we can rearrange the formula as:

Q = C * V

Where:

Q is the amount of charge,

V is the voltage across the capacitor.

Given that the area of each plate is 7.3 cm², we can use this information to calculate the capacitance. However, the question does not provide the voltage or any other information required to calculate the amount of charge accurately. Without knowing the voltage or other relevant parameters, it is not possible to determine the exact amount of charge that can be placed on the capacitor.

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The proton and electron, being opposite charges, would accelerate toward each other. Thus, 3rd option is correct.

According to Coulomb's law, the force between two charged particles is given by:

F = (k * |q₁ * q₂|) / r²

where F is the force between the particles, k is the electrostatic constant, q₁ and q₂ are the magnitudes of the charges of the particles (in this case, the charge of the proton and the charge of the electron), and r is the distance between the particles.

In the case of a proton and an electron, the proton has a positive charge (+e) and the electron has a negative charge (-e), where e is the elementary charge. Since the charges are opposite in sign, the product q₁ * q₂ is negative.

Therefore, the force between the proton and the electron is attractive, causing them to accelerate toward each other. This acceleration will continue until they collide or until external factors come into play (such as the presence of other particles or forces) that may alter their motion.

It's important to note that in a typical atomic or molecular system, electrons are usually bound to nuclei due to the attractive electrostatic forces between them. However, if an electron and a proton are initially separated and have no other influences, they will accelerate toward each other due to their opposite charges.

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Answer:

The electricity produced from the main source which is an electrical generator which is usually close a remote abundant source of natural energy or at a distant location away from the residential areas where the electricity is used

The step up transformer is  the device used to raise the voltage and therefore lower the current of the of incoming generated electricity before it is transmitted through high tension cables so that the energy loss from source to destination is reduced and the electricity generated can applied where needed

However, the high voltage transmitted along power lines to reduce energy loss cannot be used as it is by the consumer, partly because it is very harmful in the event of an electric shock and can easily damage household electrical devices, therefore, the high voltage in the power lines is reversed back or lowered into voltages which can be used to power electrical devices in buildings with the use of a step-down transformer

Explanation:

Answer:

I’d say the air outside the hemisphere is more free than from the inside of the hemisphere.

Explanation:

hope this help!

Answer:

First of all, what is acceleration? — Acceleration is the rate of change of velocity per unit of time.

Now, we know that velocity is a vector quantity i.e we need both magnitude and direction to define it and so is acceleration. We can now say that in acceleration, the direction of motion is very important or to define acceleration we need both the magnitude of motion (here it is the speed) and its direction.

Now coming to your question. There are two possible answers to this question.

more

,Case 2 — When the body is not moving in a straight line or is constantly changing its direction. In this cas the speed still is constant but the direction is constantly changing, for example in the case of a circular motion the direction of motion constantly changes (the direction of a moving body in a circular path at any point is the direction of the tangent of the circle at that point). Hence the velocity changes as the body move along the circular or curved path.

Now, as  I earlier mentioned to define acceleration we need to know it's magnitude and it's direction, and acceleration is the rate of change of velocity per unit of time — the speed remaining constant the direction constantly changing, and the velocity changes at different time intervals or rate of change of velocity is ≠ 0 unlike in case 1. Since there is the of and a change in velocity (speed constant but the direction is changing) there is some acceleration.

To sum everything up — in the case of linear motion i.e motion in a straight line when the speed is constant and direction is not changing, velocity will be zero and hence acceleration would be zero. In case of a non-linear motion i.e motion not in a straight line, in a circle or any path where the speed is constant but the direction is constantly changing, velocity will not be zero and hence the acceleration would not be equal to zero. Either it would be greater or less than zero.

(a) Capacitance is =  1.10 x 10^-9 C (b) Magnitude is 2.75 x 10^-7 (c) Energy stored is 3.13 x 10^-6 J (d) New Capacitance is 2.95 x 10^-8 C (e) Charge on each plate is 7.38 x 10^-7 C (f) Energy is  3.70 x 10^-6 J (g) Max. voltage is 8.17 KV.

(a) The capacitance C of a parallel plate capacitor is given by the formula:

C = ε0 x A / d

where ε0 is the vacuum permittivity (8.854 x 10^-12 F/m), A is the area of the plates (0.80 m^2), and d is the separation between the plates (0.040 mm = 0.040 x 10^-3 m).

C = 8.854 x 10^-12 F/m x 0.80 m^2 / (0.040 x 10^-3 m) = 1.10 x 10^-9 F

So, the capacitance of the capacitor is 1.10 x 10^-9 F.

(b) The charge on each plate Q can be found using the formula:

Q = C x V

where V is the voltage applied to the capacitor (25 V).

Q = 1.10 x 10^-9 F x 25 V

= 2.75 x 10^-7 C

So, the magnitude of the charge on each plate is 2.75 x 10^-7 C.

(c) The energy stored in the capacitor can be calculated using the formula:

Energy = (1/2) x C x V^2

Energy = (1/2) x 1.10 x 10^-9 F x 25 V^2

= 3.13 x 10^-6 J

So, the energy stored in the capacitor is 3.13 x 10^-6 J.

(d) The new value of capacitance can be calculated using the formula:

C = εr x ε0 x A / d

where εr is the relative permittivity (310).

C = 310 x 8.854 x 10^-12 F/m x 0.80 m^2 / (0.040 x 10^-3 m)

= 2.95 x 10^-8 F

So, the new value of capacitance is 2.95 x 10^-8 F.

(e) For a voltage of 25 V, the charge on each plate can be found using the formula:

Q = C x V

Q = 2.95 x 10^-8 F x 25 V = 7.38 x 10^-7 C

So, the charge on each plate is 7.38 x 10^-7 C.

(f) The energy stored in the capacitor can be calculated using the formula:

Energy = (1/2) x C x V^2

Energy = (1/2) x 2.95 x 10^-8 F x 25 V^2

= 3.70 x 10^-6 J

So, the energy stored in the capacitor is 3.70 x 10^-6 J.

(g) The maximum voltage that can be placed across the capacitor can be calculated using the formula:

Vmax = d x ε x E / ε0

where ε is the dielectric constant (310), E is the electric field strength (8.0 kV/mm), and d is the separation between the plates (0.040 mm = 0.040 x 10^-3 m).

Vmax = 0.040 x 10^-3 m x 310 x 8.0 kV/mm / (8.854 x 10^-12 F/m)

= 8.17 kV

So, the maximum voltage that can be placed across the capacitor is 8.17 kV.

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Question :-

Answer :-

Explanation :-

As per the provided information in the given question, we have been given that the Mass of the object is 150 Kg . Its Velocity is given as 24 m/s . And, we have been asked to calculate the Momentum of object .

For calculating the Momentum , we will use the Formula :-

\( \bigstar \: \: \boxed{ \sf{ \: Momentum \: = \: Mass \: \times \: Velocity \: }} \)

Therefore , by Substituting the given values in the above Formula :-

\( \dag \: \: \: \sf { Momentum \: = \: Mass \: \times \: Velocity } \)

\( \longmapsto \: \: \sf { Momentum \: = \: 150 \: \times \: 24 } \)

\( \longmapsto \: \textbf {\textsf { Momentum \: = \: 3600 \: Kg m/s }} \)

Hence :-

\( \underline {\rule {180pt} {4pt}} \)

Answer:

Newton believed that mass tells gravity how much force to exert. Einstein believed that mass tells space-time how to curve.

Explanation:

Isaac Newton believed that bodies on earth had a force of gravity pulling them down as a result of their masses.

Albert Einstein believed that the bodies were not pulled down but were moving around in a circular sphere/manner.

This confirms Newton believing that mass tells gravity how much force to exert and Einstein believing that mass tells space-time how to curve.

Answer:

first one is for the assignment second is for the quiz

Explanation:

Assignment - C.

Quiz - D.

The S.I. unit of E is NC^-1 and that of B is NA^-1 m^-1, then unit of E/B is A m/C (ampere meter per coulomb). This unit represents the ratio between the electric field and the magnetic field, indicating the strength and direction of the electromagnetic field.

The SI unit of electric field (E) is NC^(-1) (newton per coulomb) and the SI unit of magnetic field (B) is NA^(-1) m^(-1) (tesla). To determine the unit of E/B, we need to divide the unit of E by the unit of B.

Dividing the unit of E (NC^(-1)) by the unit of B (NA^(-1) m^(-1)), we can simplify the expression:

E/B = (NC^(-1))/(NA^(-1) m^(-1))

To simplify this expression, we can cancel out the common units in the numerator and denominator:

E/B = (N/C)/(N/(A m))

Now, let's simplify further by dividing the numerator and denominator:

E/B = (N/C) * (A m/N)

Canceling out the common units:

E/B = (A m)/(C)

Therefore, the unit of E/B is A m/C (ampere meter per coulomb).

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Answer:

2.3 kg m/s

Explanation:

Answer:sorry i am only in 6 grade but this is a explanation

Explanation:Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.