An 3.1 kg bowling ball rolls with a velocity of 1.1 m/s and strikes a stationary 2.2 kg bowling ball. The first ball stops after the collision. How fast does the second bowling ball roll away after the collision?

use units and work out

Answer:

wind power can be tracked back to sunlight since sunlight is one of the causes of moving air which is wind .

High temperature causes air to expand causing it to spread over a wider area decreasing it's pressure compared to places of lower temperature which causes air to contract causing a concentration of air molecules which increases its pressure . This two processes causes a pressure difference which leads to movement of air (wind) whose energy can be used to generate wind power.

Answer: increases

Explanation:

Neuroglia: Nervous system composed of two types of cells. A cell that generates and propagates action potential is called neuron and other types of cells that protect and nourishes the neurons called neuroglia. In the CNS there are four types of neuroglia cells.

Astrocytes: Look like star and found in more number. It is the largest glial cells in th CNS and it give strength and support to the neurons

Oligodendrocytes: It is smaller but look like astrocytes and it is responsible for the formation of myeline sheath. Axons that are covered with myeline sheath is called myelinated axon

Microglia: Small cells with number of spine like projections. Its function is phaogocytosis, engulf the bacteria

Ependymal cells: Epithelial cells with villi and cilia and it for blood cerebrospinal fluid barrier.

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There is a 230 radian per second angular velocity.

40.25 m/s is the linear speed.

Given that the wheel has a 0.35 m diameter.

as a result, radius D/2

Because one revolution equals one radian.

Thus, an is equal to the product of the velocity change and the time change. a = (w2w1)/(t2t1) a = (w 2w1)/(t2t1).

230 radians per second are hence the angular velocity.

a=v^{2} \r\s(40.25)/0.175\s9257.5

In uniform circular motion, the angular velocity (w), which is a vector quantity, is determined by dividing the angular displacement (), another vector number, by the change in time (t). The arc length traveled (S) divided by the shift in time (t) is the definition of speed.

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The springs compress by an extra 12% when driven through the bottom of a circular dip compared to being driven on a flat road.

On a flat road, the springs just support the car's weight.

The weight of the car = force on the springs

And from Hooke's law, F = kx

On a flat road,

k x = mg

x(flat) = 1500 × 9.8/k = 12740/k

Through the bottom of the circular dip, the springs not only balance the weight of the car, they also balance the force that keeps it in circular motion.

kx = (mv²/r) + mg

kx = (1300 × 27²/600) + (1500×9.8) = 14319.5N

x(circular dip) = 14319.5/k

If the value of the springs' spring-constant is available, we'd get straight values for This, but in their absence,

x(circular dip)/x(flat road) = 14319.5/12740 = 1.12

The springs compress by an extra 12% when driven through the bottom of a circular dip compared to being driven on a flat road.

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Answer:

1

Explanation:

Answer:

The angle between the incoming light

and the normal

Answer:

29 Joules

Explanation:

58N * 0.5m =

58 * 0.5 =

58 * 5/10 =

290/10 = 29 Joules

Answer:

Impulse is defined as, It is defined as the product of net force and the length of time it was applied. As we know that momentum and force are both vectors, therefore impulse is also a vector.

explanation:

Since force is a vector quantity, impulse is also a vector quantity. Impulse applied to an object produces an equivalent vector change in its linear momentum, also in the resultant direction.

The distance for α Centauri in light-years is 4.35

Proxima Centauri is the closest star to the Sun and is part of the Alpha Centauri star system, located 4.24 light-years away from Earth in the constellation Centaurus. Alpha Centauri A and Alpha Centauri B are the primary components of the Alpha Centauri star system, located 4.37 light-years away from Earth. Alpha Centauri A is slightly brighter than the Sun, while Alpha Centauri B is slightly dimmer.

The parallax angle of α Centauri is 0.7420".To calculate the distance in parsecs and light-years, we need to use the formula:

Distance (in parsecs) = 1 / parallax angle (in arcseconds)

Therefore, the distance for α Centauri in parsecs is:

Distance (in parsecs) = 1 / 0.7420" = 1.34 parsecs

To calculate the distance in light-years, we need to use the formula:

Distance (in light-years) = Distance (in parsecs) × 3.26

Therefore, the distance for α Centauri in light-years is:

Distance (in light-years) = 1.34 parsecs × 3.26 = 4.35 light-years

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The acceleration of the bookshelf is equal to 1.30 [tex]m/s^{2}[/tex] when student is trying to push.

Acceleration, rate or speed at which speed adjustments with time, in phrases of each velocity and direction. A factor or an item transferring in a instantly line is elevated if it accelerates or slows down. Acceleration (a) is the extrade in speed (Δv) over the extrade in time (Δt), is referred with the aid of using the equation a = Δv/Δt.

This lets in you to degree how rapid speed adjustments in meters in line with 2d squared. Mainly, Uniform acceleration, non-uniform acceleration, and common acceleration are the 3 styles of elevated motions. The time period uniform acceleration refers to a movement in which an item travels in a instantly line with an growth in speed at same durations of time.

Data: Mass of bookshelf = 51.5 kilogram

Net pressure =  67 Newton

To decide the acceleration of the bookshelf, we'd observe Newton's Second Law of Motion:

Newton's Second Law states that the acceleration of an item is at once proportional to the internet pressure appearing at the item even as being inversely proportional to its mass.

Mathematically, Newton's Second Law of Motion is given via way of means of this formula:

a = f/a

Substituting the given parameters into the formula, we have:

a = 67/51.5

Acceleration = 1.30 [tex]m/s^{2}[/tex].

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0.133 m/sec speed is the length of her shadow on the building decreasing when she is 2m from the building

The quantity of anything that happens or changes in a unit of time is referred to as its rate. You can determine an object's speed if you know how far it moves in a specific length of time. The distance an object travels in a given amount of time is its speed.

Let, x be the distance of the women from the spotlight.

s be the length of the woman on wall / building

these two variables changes when time changes.

Now, consider a triangle,

tan θ = 2/x

tan θ = s/12

As the θ is same, so

or, 2/x = s/12

or, sx = 24

or, s = 24/x .......... (i)

Differentiating w.r.t "t"

or, ds/dt = -24/x² dx/dt .......... (ii)

we want rate of change of length of shadow w.r.t time.

or, 12-x = 4

or, x = 8m

we know, dx/dt = (0.8) m/sec

Substitute this in equation (ii)

ds/dt = [(-24) /(12)²] × (0.8)

ds/dt = - 0.133 m/sec

At rate  - 0.133 m/sec, the length of shadow of women on the building decreasing when she is 2 m from the building.

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556 nm is the wavelength of radiation that has a frequency of 5.39 × 10⁻¹⁴ s⁻¹.

The energy that emanates from a source and moves through space at the speed of light is referred to as radiation. This energy has wave-like qualities and is accompanied by an electric field and a magnetic field.

Examples include solar heat or light, microwaves from an oven, X-rays from an X-ray tube, and gamma rays from radioactive materials. Atoms can be ionized, or removed from their electrons, by ionizing radiation.

Given that:

frequency (f) = 5.39 × 10⁻¹⁴ s⁻¹

Velocity of light (c) = 2.9979 × 10⁸ m/s

As we know,

   λ = c/f

or, λ =(2.9979 × 10⁸ m/s)/(5.39 × 10⁻¹⁴ s⁻¹)

or, λ = 5.56 × 10⁻⁷m

or, λ = 556 nm

Thus, the wavelength = 5.56 × 10⁻⁷m or 556 nm.

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According to the question,

Using Newton`s 2nd law

Force = ∆momentum/time = ∆(mv)/t = (m/t)*∆v

Given m/t = 2.0kg/s

∆v = 12.0m/s (assuming final vel of water = 0)

F = 2.0kg/s x 12.0m/s

F = 24.0N

In physics, a force is a power that can change the motion of an item. A force can purpose an object with mass to alternate its pace. Pressure also can be described intuitively as a push or a pull.

A pressure is a push or a pull and it affects our each day lives because without force, people might not be capable of open and near stuff or lift up our arms or legs.

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The idea that is not consequence of quantum revolution is particles of matter and antimatter completely annihilate each other, producing energy, when they meet.

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The distance -time graph of object D shows a linear relationship. Thus it moves with a constant speed. Whereas, object C shows a non-linear relation of distance and time thus, it moves with a changing speed.

Velocity is a physical quantity that measures the distance covered per unit time. Velocity is a vector quantity and is having both magnitude and direction.

Velocity is the ratio of distance to the time. Thus, if the change in distance is linear with the change in time, there will be no change in velocity and the object is said to be moving with constant velocity.

If the distance and time are non-linear thus, thus, change in distance is not coinciding with change in time, then the velocity changes each time.

Therefore, object C has a changing speed and object D has a constant speed.

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If there is going to be a total lunar eclipse tonight, then you know that the Moon's phase is full.

The full moon phase is when lunar eclipses take place. When the Moon and Sun are exactly lined up, Earth's shadow falls on the Moon's surface, darkening it and occasionally turning it a brilliant red over the course of a few hours. Every lunar eclipse can be seen from half of the planet.

Total lunar eclipses occur when the moon is entirely submerged in the umbra of the earth's shadow. Hence, total lunar eclipse occurs when the Moon's phase is full.

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Answer:

d

Explanation:

In an electromagnetic field, the electric and magnetic fields are present in the form of waves in horizontal and vertical patterns. In order to be present in that pattern, it is necessary to have maximum amplitude.

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Answer: option (c)

Explanation:

Product development is also known as new product operation.

The main ideal is to satisfy the consumer demand.

There are some stages of product development process. They're idea generation, webbing, conception development and testing, request strategy, developing the new product, request testing, request commercialization.

The process of developing a product is managed by product inventor.

Product development can be done in two ways, the new product is introduced or the being products can be bettered according to the client satisfaction.

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Sphere Y will have a negative and Z have a positive sign. The sign of charge q2 will be negative.

When the spheres are separated and the balloon is removed, the two spheres show an electrical charge. The left sphere ends with a positive charge. The sphere on the right ends with a negative charge. When two conductive balls touch together.

It is as if they become one excellent conductor and the combined charge of the two spheres spreads over the surfaces of the contacting spheres. If you release the spheres again, each will still have half the original total charge. The charge is then spread evenly over the surface of the sphere.

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The value of force is 211N.  Thus, the cylinder undergoes through 6 rotations with a force is 211N

A cylinder of mass 5 kg and radius 50cm is rotating at angular speed of 5 rad/sec.

To find the force that must be applied tangentially to the cylinder to bring it to rest in 6 revolutions

As per the given criteria

Rotation if the wheel =  5 rad/ sec

Now, total rev = 6

We know

0 = (10/6) ² - 2 lamda × 6

= 100/36=12 lamba

Lamda= 33.33 rev/sec

Lamda = 2π×33.33 rad/sec²

Now the moment of inertia

I=1/2mr²

=1/2 (0.5) ²× 5

=0.625 kgm²

Since the force F, now torque

F=F.r=0.62 F

Now, torque = I × lamda

= 0.625×33.33×2π

Or 0.62 F= 130.82

F= 211 N  

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Answer:

b

Explanation:

28.8" (and any words after it) was ignored because we have restricted queries to 32 words.

A satellite s is in an elliptical orbit around a planet p, as shown above, with r1 and r2 being its closest and farthest distances, respectively, from the center of the planet

(R1/R2)V1 is its speed at its farthest distance.

The rate of change in position of an object in any course.Speed is measured because the ratio of distance to the time wherein the distance became included. Speed is a scalar amount because it has handiest route and no significance.

Velocity can be notion of as the rate at which an object covers distance. A quick-moving object has a high speed and covers a notably big distance in a given amount of time, whilst a sluggish-shifting item covers a relatively small amount of distance in the same amount of time.

The primary unit or the S.I. unit of velocity is m/s or ms?¹.

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Answer:-A metal ball is made up of atoms having minimum interatomic distance, so when we heat the metal its atoms actually vibrate about their mean position and thus colliding with neighboring atoms and making them to vibrate, due to this continuation process metals size increases or metal expands on heating.

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space                                                                         “Steel will expand from 0.06 percent to 0.07 percent in length for each 100oF rise in temperature. The expansion rate increases as the temperature rises. Heated to 1,000oF, a steel member will expand 9½ inches over 100 feet of length When a metal ring is heated both inner and outer radii increase. This can be understood better by visualizing that the ring in reality is a rod bent into a circle. That rod will expand upon heating. The same bar bent into a ring thus also expands.

Answer:

brokies+99+00+00=00

Explanation:

The maximum force of static friction is not dependent on the area of contact.

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That amounts battery to 220 volts divided by 6.8 times 10 and three less meters between them. That is 6.8 millimeters electric 3.2 times 10 to the four Newtons per Coulomb gives us 32,352 Newtons per Coulomb.

A battery is a device that converts chemical energy into electrical energy by storing it. During chemical reactions in batteries, electrons flow from one material (electrode) to another through an external circuit. The movement of electrons results in an effective electric current.

Electric field due to battery = potential/separation = 220v / 6.8mm = 220v / 0.0068m = 32,352 volts per meter, according to the question.

If there is a battery, two parallel plates spaced 6.8 mm apart will create an electric field.

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Answer: A. acceleration

Explanation: Acceleration is the term that is equal to velocity change per second. Acceleration refers to the rate at which an object's velocity changes over time. It measures how quickly an object's speed or direction changes. When an object speeds up, slows down, or changes direction, its velocity is changing, and this change per unit of time is known as acceleration.

To calculate acceleration, you divide the change in velocity by the time it takes for that change to occur. The unit of acceleration is meters per second squared (m/s²) in the metric system. For example, if an object's velocity changes from 10 m/s to 20 m/s in 2 seconds, the acceleration would be (20 m/s - 10 m/s) / 2 s = 5 m/s².

A metal bar magnet has a magnetic field in the region of space around it. The magnetic field is due to an electric current that runs along the length of the magnet.

The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Permanent magnets can be made from ferromagnetic materials.

This region is called the magnetic field. If an iron object is near a magnet, but is not within the magnetic field, the object will not be attracted to the magnet. When the object enters the magnetic field, the force of the magnet acts, and the object is attracted.

Inside a bar magnet, since magnetic field are continous, they point from the south pole to the north pole as the magnetic enters from south pole from the outside and emerge from the north pole.

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The distance to the object creating the echo is 2,454.6 meters.

Assuming the submarine is in saltwater, the speed of sound in seawater is approximately 1,484 meters per second.

The distance to the object creating the echo can be calculated by multiplying the speed of sound by the time it took for the echo to return to the submarine:

Distance = Speed x Time

Distance = 1,484 m/s x 1.65 s

Distance = 2,454.6 meters

Therefore, the distance to the object creating the echo is 2,454.6 meters.

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The direct answer to your question is that electric engines can be more than 80% efficient and even up to 90% efficient while combustion engines are 30 to 45% efficient.

Electric motors make vehicles substantially more efficient than internal combustion engines. Electric motors convert over 85 percent of electrical energy into mechanical energy, or motion, compared to less than 30 to 40 percent for a gas combustion engine.

These efficiencies are even lower after considering losses as heat in the drivetrain, which is the collection of components that translate the power created in an electric motor or combustion engine.

• Motor efficiency: 85..90%

• Battery load efficiency: 80..90 %

• Battery discharge efficiency: 80..90 %

• Power generation efficiency at power: 30..40 %

• Transfer efficiency from the powerplant to the reloading station: 90..95 %

• Energy conversion efficiency AC to DC: 90..95 %

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