5. A ball is dropped from rest at a height of 25.0 m above the ground. A. How fast is the ball moving when it is 10.0 m above the ground? B. How much time is required for it to reach the ground level? Ignore the effects of air resistance.​

The acceleration of the object is 5.3 cm/[tex]s^{2}[/tex] and is directed towards the negative x - axis.

We have an object moving with uniform acceleration along the + x axis.

We have to determine of the acceleration of object after 3.25 seconds.

According to the question -

initial velocity = u = 11 cm/s along +x axis.

Now, using the second equation of motion -

[tex]$S=ut +\frac{1}{2}at^{2}[/tex]

S = x(2) - x(1) = - 5 - 2.91 = - 7.91 = 7.91 cm along -x axis.

u = 11 cm/s

Substituting the values -

7.91 = 11 x 3.25 + 0.5 x 3.25 x 3.25  x a

7.91 = 35.75 + 5.3a

a = - 5.3 cm/[tex]s^{2}[/tex]

Hence, the acceleration of the object is 5.3 cm/[tex]s^{2}[/tex] and is directed towards the negative x - axis.

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Absorption lines are created when electrons gain energy from photons, whereas emission lines are created when electrons lose energy (continuous spectrum). Gaseous clouds are sorts of cosmic objects in which we would expect to see each.

When an atom, element, or molecule absorbs a photon with an energy equal to the difference between two energy levels, absorption lines are created. The atom, element, or molecule is considered to be in an excited state when this happens because one electron is elevated to a higher energy level.

In a spectrum, an emission line will be seen if a source emits radiation at a particular wavelength. This emission happens when an excited atom, element, or molecule switches to a lower-energy form.

Gaseous clouds are sorts of cosmic objects in which we would expect to see each. Some of the light at specific wavelengths is scattered when it travels through the atmosphere's gas, producing darker bands. These lines were catalogued by heating common components until they created light and became known as "spectral lines."

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Answer: Soils with smaller particles (silt and clay) have a larger surface area than those with larger sand particles, and a large surface area allows a soil to hold more water. In other words, a soil with a high percentage of silt and clay particles, which describes fine soil, has a higher water-holding capacity.

Silty clay loam: 1.80-2.00

Texture: Inches of water storage per foot of soil .

Explanation: hope this helps!!!!

The term used to describe the energy of a system that is available to do work is free energy.

Free energy is the energy that is available in a particular chemical system to do useful work.

The Gibbs free energy denoted by G is the enthalpy of a system minus the product of its entropy and absolute temperature.

It is referred to as free because the energy is readily available anytime. Free energy is measured in kilojoules per mole (KJ/mol).

Therefore, it can be said that the term used to describe the energy of a system that is available to do work is free energy.

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If there is a hill, it will move more slowly. It will continue moving at the same speed if the surface is flat. Gravity is what causes a slope’s change in speed.

Things move more quickly when moving downhill and more slowly when moving upwards (slow down).

Yes, many individuals initially find this counter-intuitive because they overlook the fact that acceleration can still occur even when an object maintains a constant speed.

The force that is sent up the hill is powered by the car’s engine. Because the engine makes the drive wheels rotate, the road applies this force, which is actually static friction, to the drive wheels.

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The magnetic field amplitude of an electromagnetic wave 1.66[tex]10^{-7}[/tex]T

Magnetic field is the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.

The relationship between the magnetic field amplitude of the electric field and the magnetic field in an electromagnetic wave is E=cB

where

E is the electric field amplitude

B is the magnetic field amplitude

c is the speed of light

For this electromagnetic wave, we have E=50v/m

So we can solve the formula to find B:

B=E/c =  [tex]\frac{50v/m}{3*10^{8}m/s }[/tex]

=1.66[tex]10^{-7}[/tex]T

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True, infrared light, though it may be invisible, has many of the same characteristics as visible light.

They both travel at the speed of light i.e, 3 x 10^8 m/s.

They both follow the rules of reflection and refraction.

Infrared light and visible light are types of electromagnetic waves.

As shown in the adjoining image, in an electromagnetic wave, the electric field and the magnetic field are perpendicular to each other. Also, the direction of the propagation of the wave is perpendicular to both electric and magnetic fields.

Other than the two kinds of waves mentioned above i.e visible and infrared, the electromagnetic spectrum includes other waves also like X-rays, gamma rays, radio waves, microwaves, and ultraviolet rays.

The waves that are a part of the electromagnetic spectrum have different wavelengths and frequencies, as shown in the adjoining image but they share some common characteristics like:

They travel at the speed of light i.e, 3 x 10^8 m/s.

They obey the rules of reflection and refraction.

Hence, infrared light, though it may be invisible, has many of the same characteristics as visible light.

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True, infrared light, though it may be invisible, has many of the same characteristics as visible light.

They both travel at the speed of light i.e, 3 x 10^8 m/s. They both follow the rules of reflection and refraction. Infrared light and visible light are types of electromagnetic waves.

As shown in the adjoining image, in an electromagnetic wave, the electric field and the magnetic field are perpendicular to each other. Also, the direction of the propagation of the wave is perpendicular to both electric and magnetic fields.

Other than the two kinds of waves mentioned above i.e visible and infrared, the electromagnetic spectrum includes other waves also like X-rays, gamma rays, radio waves, microwaves, and ultraviolet rays.

The waves that are a part of the electromagnetic spectrum have different wavelengths and frequencies, as shown in the adjoining image but they share some common characteristics like:

They travel at the speed of light i.e, 3 x 10^8 m/s.

They obey the rules of reflection and refraction.

Hence, infrared light, though it may be invisible, has many of the same characteristics as visible light.

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Complete Question -

In which one of the following cases is the displacement of the object directly proportional to the elapsed time?

A)a ball rolls with constant velocity

B)a ball at rest is given a constant acceleration

C)a ball rolling with velocity  given a constant acceleration

D)a bead falling through oil experiences a decreasing acceleration

E)a rocket fired from the earth's surface experiences an increasing acceleration

A ball rolls with a constant speed is the displacement of the object without delay proportional to the elapsed time.

An item's position adjustments if it movements on the subject of a reference body, inclusive of whilst a passenger actions to the returned of an plane or a lecturer moves to the right on the subject of a whiteboard. Displacement describes this shift in location. Displacement is a vector and shows that an item has moved or has been displaced. This shows that it has both a route and a significance and that it can be visualized as an arrow pointing from the starting place to the finishing region.

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N- type of semiconductor is denoted by positive ion and free electron.

An object known as a capacitor is one that uses an electric field to store electrical energy. There are two terminals on this passive electrical component.

Capacitance is the name for a capacitor's result. A capacitor is a component made to increase the capacitance in a circuit, even though there is some capacitance between any two electrical conductors that are close to one another in a circuit. Condensers and condensators were the previous names for capacitors. Although condenser microphones, sometimes known as capacitor microphones, are an important exception, this word and its cognates are still often used in many other languages outside English.

Practical capacitors come in a wide variety of physical shapes and constructions, and they are used in a variety of ways. A minimum of two electrical conductors are typically found in a capacitor.

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When the friction coefficient between a road and the tyre of a vehicle is 4/3, the maximum incline that the road may have would be 16° so that when brakes are applied, the vehicle stops within 5 m.

The ratio of the frictional force to the normal force is called as the coefficient of friction (COF), which has no dimensions. The ratio that is present between the normal force pressing two surfaces together and the frictional force preventing motion between the two surfaces.

It is mostly represented by using the Greek letter mu (μ) Those materials are said to be as lubricous only if their COF is less than 0.1.

The present Surface roughness and the kind of COF are related to the nature of the materials.

Then we see that,

S=5m,

Friction coefficient (μ)=4/3,

g=10m/[tex]s^{2}[/tex]

speed u=36km/h=10m/s

v=0 a=[tex]\frac{v^{2}-u^{2} }{2s}[/tex] = [tex]\frac{0-10^{2} }{2*5}[/tex] = 10 m/[tex]s^{2}[/tex]

Then,

R−mgcosθ = 0

⇒ R = mgcosθ

then, ma+mgsinθ−μR = 0

⇒ ma+mgsinθ−μmgcosθ = 0

⇒ a + gsin[tex]\theta\\[/tex] - μgcosθ = 0

⇒ 10 + 10sinθ - [tex]\frac{4}{3}[/tex] x 10cosθ = 0

⇒ 30+30sinθ -40cosθ = 0

⇒ 4cosθ - 3sinθ = 3

⇒ 4[tex]\sqrt{1-sin^{2}\theta }[/tex] = 3+3sinθ

if we square both sides, we have,

sinθ = [tex]\frac{18+\sqrt{18^{2}-4(25)(-7) } }{2*25}[/tex]

= 14/50 = 0.28

⇒ θ = [tex]sin^{-1}[/tex] (0.28) = 16°

Hence maximum inclination

θ= 16°

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Answer: You need your bachelor's to become a nurse at an entry level.

Explanation: Most nurses enter nursing knowing they will eventually earn their baccalaureate degree. While it’s possible to obtain an Associate Degree in Nursing (ADN), capped by earning one’s RN license by taking and passing the standardized NCLEX-RN exam, many nurses choose to further their education—and career prospects—by obtaining their baccalaureate degree. Requirements vary by state, but at the very least, the path to RN usually involves earning an Associate Degree in Nursing (ADN), qualifying a candidate to take the standardized national licensure examination known as NCLEX-RN. Only after taking this exam and passing may a nurse work as an RN. This is true of all states and the District of Columbia. Some localities may also have additional requirements.

RN - Registered Nurse

Hope this helps

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12 m from the point of impact when the key is released, the speed of the boat is 4.0m/s.

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is traveling along a path. In other words, velocity is a vector, whereas speed is a scalar value. Let’s take an example, 15km/hr shows the speed of a vehicle but 15km/hr east shows the velocity of the vehicle. Speed of an object can be calculated mathematically in a simple way. Speed of an object can be found by dividing distance traveled by the object by time taken to cover that distance.

The speed of the boat can be given by , v = d/t

Now, d = 12 m and t is the time the key takes to fall into the boat

Taking the initial time(time at which the key is dropped) to be 0 we calculate t when height(y) is 45 m.

y = ½(gt)^2

t =   (2y/g)^(1/2)

t = ((2*45)/9.8)^(1/2)

t = 3.03 s

Therefore, speed of the boat = (distance covered by the boat)/(time taken)

distance  = 12/(3.03)= 4.0 m/s

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Based on the calculations, the instantaneous acceleration of this object at time, t = 2 seconds is equal to 2 m/s^2.

Velocity can be defined as the distance covered by an object per unit of time. This ultimately implies that, velocity is a vector quantity because it has both magnitude and direction. Also, velocity can be measured as meter per seconds.

Mathematically, the velocity of any physical object can be calculated by using this formula:

Velocity = displacement/time

An instantaneous acceleration can be defined as a continuous function of time which gives the ratio of change in velocity of a physical object. Mathematically, instantaneous acceleration can be calculated by taking the derivate of the velocity function.

Taking the derivate of the velocity function, we have:

Velocity, v = 4 + 0.5t^2

dv/dt = 0 + (0.5 × 2)×t^{2-1}

dv/dt = t

Substituting the value of time (t), we have:

Instantaneous acceleration, dv/dt = t

Instantaneous acceleration, dv/dt = 2 m/s^2.

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Complete Question:

An object moving in a straight line has a velocity v in meters per second that varies with time t in seconds according to the following function: v = 4 + 0.5t^2

The instantaneous acceleration of the object at t = 2 seconds is:

answer choices

2 m/s^2

4 m/s^2

5 m/s^2

6 m/s^2

8 m/s^2

The compressed air must exert a force of 1318.14 N on the small piston in order to lift the car weighing 13300 N.

What is force?

The concept of force is commonly explained in terms of Newton’s three laws of motion.

According to Newton’s first principle, a body that is at rest or moving at a uniform rate in a straight line will remain in that state until some force is applied to it.

The second law says that when an external force acts on a body, it produces an acceleration in the direction of the force. The magnitude of the acceleration is directly proportional to the magnitude of the external force and inversely proportional to the quantity of matter in the body.

Newton’s third law states that when one body exerts a force on another body, the second body exerts an equal force on the first body.

Because force has both magnitude and direction, it is a vector quantity.

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Answer:

According to Newton's second law of motion, the acceleration of a body is directly proportional to the force acting on the body and inversely proportional to its mass. The formula for this law is

a

=

F

m

, from which we get the formula

F

=

m

a

. When mass is in kg and acceleration is in

m/s/s

or

m/s

2

, the unit of force is

kgm/s

2

, which is read as kiligram-meter per second squared. This unit is replaced with an N in honor of Isaac Newton. Your problem can be solved as follows:

Known/Unknown:

m

=

3000kg

a

=

2m/s

2

Equation:

F

=

m

a

Solution:

F

=

m

a

=

3000kg

x

2m/s

2

=

6000kgm/s

2

=

6000N

Explanation:

ikikikiki

Answer:

6000

Explanation:

According to the given statement The mass of the basket of fruits is 1.2 kg.

A measurement of inertia, the fundamental property of all stuff. In essence, it's the resistance of a mass of matter to changing its direction or speed in reaction to the application of a force. The more mass a body possesses, the smaller the change that is brought about by an applied force.

GPE = mgh

GPE = gravitational potential energy.

m = mass in kilograms (kg).

g = gravitational field strength in (N/kg).

h = change in height in meters (m).

GPE = 44.1 J

g = 9.8 N/kg

h = 3.5 m

Fill in the given values in the formula to find m:

44.1 = m * 9.8 * 3.5

44.1 = 34.3m

m = 44.1/34.3

m = 1.28571429

m = 1.2 kg

The mass of the basket of fruits is 1.2 kg

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Answer: N53oW

Explanation: Hope this helps :)

Answer:

Volcanoes and earthquakes are not randomly distributed around the globe.

Explanation:

Instead they tend to occur along limited zones or belts. With the understanding of plate tectonics, scientists recognized that these belts occur along plate boundaries.

Answer:

It is the law of f=ma because the lighter the trolley is, the easier it is to push it, because it doesn't have as much mass,

Explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day :)

According to  the given statement The force exerted by the string on the object is 2.7 N.

Any item travelling in a circular direction has a tangential velocity, which is its linear speed. On a turntable, a point in the centre moves less distance in a full rotation than a point near the outside edge.

Tangential velocity is determined by dividing the circle's circumference by the time required for one complete rotation: 2*pi*r/t. The formula V = w * r, where w (omega) is the angular velocity of the rotating object and r is the radius of the circle, also relates it to angular velocity.

m = 0.9 kg

r = 3m

v = 3m/s

Force (f) = mv2/r

Now ,putting values

force (f) = [tex]\frac{0.9 k g \times\left(3 \mathrm{~ms}^{-1}\right)^2}{3 \mathrm{~m}}[/tex]

F = 2.7 N

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An airplane flying directly toward it from the east is spotted by a radar station. The distance to the plane at initial observation is 385.0 m at 41.0 °. 302.26m is the displacement.

Displacement is defined as a shift in an object's position. It is a vector quantity with direction and magnitude. An arrow pointing from the starting location to the finishing position is used to represent it. For instance, if an object moves from position A to position B, its position changes. The term used to describe this change in an object's position is displacement.

The instantaneous velocity of the item is the rate at which the displacement changes as a function of time when studying the motions of objects across time. Therefore, the instantaneous speed is different from the velocity, or the rate at which the distance traveled along a particular path changes over time. The temporal rate of change can also be used to define the velocity. The velocity of P (for example, a point representing the position of a passenger walking on the train) may be referred to as a relative velocity as opposed to an absolute velocity, which is computed with respect to a point which is considered to be "fixed in the space," if one takes into consideration a moving initial position or, equivalently, a moving origin (e.g., an initial position or the origin which is fixed to a train wagon, which in turn moves on its rail track) (such as, for instance, a point fixed on the floor of the train station).

Therefore,

d1= 385.0m

∅ = 41°

and ∅=124° , d2= 795.0m

r1= d1sin∅j+d2cos∅i

  =385sin41°j+795cos41°i

  =252.59j+599.98i

|r1|= [tex]\sqrt{63801.70+359976.00} ( r=\sqrt{a^{2}+b^{2} }[/tex] if |r| = ai+bj)

    =650.98m

similar for r2,

=d1sin124°j+d2cos124°i

=319.16j+(-444..40)i

|r2|=[tex]\sqrt{101863.10+19749.36}[/tex]

    =348.72m

so displacement |r2-r1| = 302.26m

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Answer:

110cm

Explanation:

displacement= final position- initial position

= 120cm-10cm

= 110cm

Radiation with a wavelength of 263.9 nm can eject a 2.00 -eV electron from a calcium electrode. Calcium has a piece function of 2.seventy one eV.

The expelled photoelectrons are E = 2.0 eV, so

⇒ [tex]2.0 eV = E_{in} -2.71 eV[/tex]

⇒ [tex]E_{in}=2.0 eV +2.71eV[/tex]

⇒ [tex]E_{in} = 4.71 eV[/tex]

in Joules, it is

⇒ [tex]E_{in} =4.71*1.6*10^{-19} J[/tex]

⇒ [tex]E_{in} =7.536*10^{-19} J[/tex]

Since [tex]E_{in}=h\nu=\frac{hc}{\lambda}[/tex], the wavelength must be

[tex]\Rightarrow \lambda = \frac{hc}{E_{in} }[/tex]

[tex]\Rightarrow \lambda=\frac{(6.64*10^{-34}Js)(3*10^{8}m/s) }{7.536*10^{-19} J}[/tex]

[tex]\Rightarrow \lambda=263.9\times10^{-9} \; m[/tex]

[tex]\Rightarrow \lambda=263.9 \;n m[/tex]

inside the photoelectric impact, the electricity of the photoelectrons chosen from metallic with work function ∅ thanks to misguided radiation of the entirety

If radiation moves a calcium electrode with the work feature ∅ = 2.seventy one eV and the power of radiation equals

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FALSE

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Therefore, the direction of motion is positive for upward motion if an object is travelling vertically up. Since gravity accelerates downhill, it is assumed that this acceleration is negative.

Depending on the sign convention you desire to adhere to, the sign of the acceleration caused by gravity (g) might be either positive or negative. G will be positive if you decide to make the downward direction positive and the upward direction negative (an often-used convention). The thing is either standing still or descending. The initial velocity of an object is zero meters per second if it is dropped from a height rather than being hurled.

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Between a negative and positive charge along the line connecting the two charges, the electric field may be zero. if the two charges have the same size. When there is no longer any net force between the two charges, the third charge should be positioned between the two charges.

The internet pressure is the vector sum of all forces acting on an item.

When an item is in equilibrium, whether it is at rest or moving at a constant speed, there is no net force acting on it. A vector can only have magnitudes of zero when all of its components are zero.

In mechanics, the term "net force" refers to the vector sum of all forces acting on a particle or object. The internet pressure, which is a single pressure, replaces the influence of the real forces on the particle's motion. The net pressure is the sum of all forces acting on an item.

Newton's second regulation, which says that F = ma, wherein F represents the net force, can be used to compute the net force. The item's mass is given with the aid of m. Acceleration is a.

The internet force performing on an object is 0 whilst it is in equilibrium, whether it's far at rest or moving at a consistent pace.

handiest whilst all of a vector's components are 0 can a vector have magnitudes of zero. the general pressure acting on an item is referred to as the net force. while the forces are equal and cancel every different out, it will become zero. If there may be a internet force performing on an object, it's going to accelerate in that direction; but, except the object is shifting simple, this is not the same as the path of movement.

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The equation for position of car A is [tex]x_{a}[/tex] ( t ) = 36 t + 48.

The equation for position of car B is [tex]x_{b}[/tex] ( 0.5 ) = 36 ( 0.5 ) + c.

The position function in  one dimension is written as x ( t ) = vt + c. This equation is for a function starting at t = 0.

x = Distance

t = Time

v = Initial Velocity constant

c = Initial position constant

For car A ,

t = 0

c = 48 km

v = 36 km / h

[tex]x_{a}[/tex] ( 0 ) = 36 ( 0 ) + 48

[tex]x_{a}[/tex] ( 0 ) = 48 km, which is the distance at which car A starts to move from.

For car B,

t = 0.5 hr

c = 0

v = 48 km / h

[tex]x_{b}[/tex] ( 0.5 ) = 48 ( 0.5 ) + 0

[tex]x_{b}[/tex] ( 0.5 ) = 24 km

[tex]x_{b}[/tex] ( 0 ) = 48 ( 0 ) + c

[tex]x_{b}[/tex] ( 0 ) = c

Therefore,

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Answer:

Explanation:

[tex]The amount of the water, m = 200 L = 2.0×105 gThe initial temperature of the water, T1 = 18∘CThe final temperature of the water, T2 = 60∘CThe specific heat of the water, C = 4.184 J/g−∘CThe energy required by the water can be given asE = mC(T2−T1)→E = 2.0×105 g×4.184 J/g−∘C×(60−18)∘C→E = 2.0×105×4.184×42 J∴E = 3.51×107 JHence the energy required for this process is 3.51×107 J.[/tex]