3. Over which of the following time intervals is
the acceleration of the object the greatest?
A. 0 s to 1 s
B. 1 s to 2 s
C. 2 s to 3 s
D. 4 s to 5 s

The youngest is Calliope.

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The minimum speed that a salmon jumps at an angle of 35.5 degree is 43.3 m/s to leave the water to continue upstream.

What is speed and how it calculated out to be 43.3 m/s ?

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The advice the interviewee offered for students interested in his/her career was to be hardworking and persistent.

This is referred to as the chosen profession or occupation of an individual and is characterized by the individual taking the required courses or training which are needed in the execution of the tasks related to it.

The advise which was offered to the students was to be hardworking and persistent as there are lots of challenges and obstacles which one will face on the journey and will help overcome them and achieve the desired result in practicing the career.

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The minimum radius of the circle is 5249m

The 76kg pilot's effective weight at the bottom of the circle is 5214N

The pilot's effective weight at the top the circle is 3724N

Here's the complete question:

a jet pilot takes his aircraft in a vertical loop.

a) if the jet is moving at a speed of 2000 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's

b) calculate also the 76kg pilot's effective weight ( the force with which the seat pushes up on him) at the bottom of the circle.

c) calculate the pilot's effective weight at the top the circle. (Assume the same speed.)

a) To determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's.

v =2000 km/h

v = 2000/3.6 m/s

v = 555.6 m/s

centripetal acceleration, a

a = v²/r

Therefore

6g = v²/r

r = v²/(6g)

r =555.6²/(6*9.8)

r = 5249 m

b) The 76kg pilot's effective weight at the bottom of the circle

   76*(6g + g) = 76*7*9.8 = 5214 N

c) The pilot's effective weight at the top the circle.

    76*(6g-g) = 76*5*9.8 = 3724 N

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Since they are connected in series, the current in ampere through each lamp will be  0.01 A approximately. None of the options is correct.

Electrical power is the rate at which electrical work (or electrical energy) is done. It is measured in Watt.

Given that twelve identical 2 W light bulbs are connected in series to a 240 V mains supply. The current in ampere through all the lamp will be the same because they are connected in series.

Power P = IV

Where

Substitute all the parameters into the formula.

2 = I × 240  

I = 2 / 240

I = 0.0083 A

Therefore, the current in ampere through each lamp is 0.0083 A

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Answer: The proportionalities expressed by Newton's universal law of gravitation are represented graphically by the following illustration. Observe how the force of gravity is directly proportional to the product of the two masses and inversely proportional to the square of the distance of separation.

Explanation: I hope this helps : )

The final velocity of textbook upon being pushed is 0.64 m/s. Thus, [tex]v_{f} = 0.64 m/s[/tex].

Given mass of the textbook, m = 1.4 kg

External force applied to push textbook, F = 6.0 N

Frictional force exerted on book, f = 3.0 N

Initial velocity of textbook, u = 0

Since, The external force applied on the object is more than the total limiting friction exerted on book. Hence, the object moves and friction become Kinetic Friction.

Therefore, F-f = ma

6 - 3 = 1.4 * a

[tex]a= \frac{3}{1.4}[/tex]

[tex]a = 2.1 m/s^{2}[/tex]

Now, to find final velocity of textbook

[tex]v^{2} = u^{2} + 2as[/tex]

where v = final velocity

u = initial velocity

a = acceleration

s = distance travelled by textbook

[tex]v^{2} = 0 + 2*2.1*0.1[/tex]

[tex]v^{2} = 0.42[/tex]

v = 0.64 m/s

Hence, Final velocity of textbook after crossing 1.0m of distance is 0.64m/s.

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Numerous optical devices, including telescopes, microscopes, binoculars, spectroscopes, and periscopes, among others, employ the phenomenon of complete internal reflection of light.

A diamond's brilliance results from complete internal reflection.

Total internal reflection, which is used in polarising prisms, is significant in fibre optics. Portion of the incoming light will be transmitted and part will be reflected at any incidence angle below the critical angle. The indices of refraction can be used to compute the normal incidence reflection coefficient.

Total internal reflection is a widely used technique in fibre optics. It is used in communications to carry cable TV, internet, and telephone signals. The use of light transmission through fibres is known as fibre optics.

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The Electric Field of the capacitor is given by E = q/kaε, Voltage is given by V = qd/kaε and the capacitance is given by kaε/d.

The magnitude of charge on each plate is given by q, area between the plates is given by a, dielectric constant is given by k, distance between the plates is d. The area of the enclosed charge 'a' is given by

q(enclosed) = σa(q/a)a, where σ is surface charge density given by q/a.

Now, according to gauss law, E = q/kaε.

Since, voltage = Electric field × Distance

V = E×d

V = (q/kaε)×d

V = qd/kaε

Now, the capacitance = Charge/Voltage

C = q/V

C = q/(qd/kaε)

C = kaε/d.

Thus, the value of Electric Field, Voltage and Capacitance are E = q/kaε, V = qd/kaε and C = kaε/d respectively.

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Complete Question

A parallel-plate capacitor has the volume between its plates filled with plastic with dielectric constant K. The magnitude of the charge on each plate is Q. Each plate has area A, and the distance between the plates is d.1. Use Gauss's law to calculate the magnitude of the electric field in the dielectric.2. Express your answer in terms of the given quantities and appropriate constants.3. Use the electric field determined in part A to calculate the potential difference between the two plates.4. Express your answer in terms of the given quantities and appropriate constants. Use the result of part B to determine the capacitance of the capacitor.5. Express your answer in terms of the given quantities and appropriate constants.

Answer:

C. 2.5 g/ml

Explanation:

Divide mass by volume

1. 55 km is distance the car travel on the trip.

Net distance = final distance - initial distance = 155 - 100 = 55km.

2. 110 km/hr is would be the average speed of the car in the question above if the trip took half an hour.

Average speed  = distance travelled/ time =  55km/0.5hr

Hence, average speed = 110km/hr

The average speed is the full distance traveled with the aid of the object in a particular time interval. The average speed is a scalar quantity. it is represented via the significance and does not have path. average pace is calculated by way of dividing distance through time.

Speed is the directional pace of a object in movement as a demonstration of its price of alternate in role as discovered from a selected frame of reference and as measured by way of a particular trendy of time.

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It should be noted that after the big bang occurred, the universe "Became Denser" (Option B)

According to the Big Bang Theory, after the explosion which triggered the transformation of radiation into matter, gravity pulled dark matter together which in turn attracted normal matter.

Hence, it is right given the above analogy that the Universe became denser.

It should be mentioned that the big-bang hypothesis is a widely accepted account of the universe's evolution. Its defining characteristic is the universe's birth from a condition of great heat and density—the so-called big bang, which occurred 13.8 billion years ago.

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The velocity of the falcon and dove in m/s after the impact is 21.95 m/s.                            

Using the data given,

Mass of falcon m₁ = 1.45kg

Mass of dove m₂ = 0.159kg

Initial speed of the falcon x₁ = 23.4m/s

Initial speed of the dove, x₂ = 9.3m/s

It is necessary to find the final velocity after the impact. When the falcon catches the dove, it will becomes the case of inelastic collision. The conservation of momentum will be :

m₁x₁ + m₂x₂ = (m₁ + m₂)V

V = m₁x₁ + m₂x₂/(m₁ + m₂)

V = 1.45*23.4 + 0.159*9.33/1.45+0.159

V = 33.93 + 1.483/1.613

V = 35.413/1.613

V = 21.95

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The nervous system in a woman can coordinate the reflex action due  skin receptors sense a stimulus, sensory neurons transmits the electrical impulses, motor neurons address it to the effect, and finally producing a response.

Reflex action can be defined as an involuntary response to different environmental conditions, which are collectively called stimuli. These conditions may lead to a change in the body temperature and they are useful to adapt to a changing environment, which is a fundamental issue in adaptive responses.

The nervous system may manage reflex actions in this system by using specific cell receptors located at the epidermis (skin cells).

Therefore, we can conclude that the reflex action is a coordinated response of the nervous system associated with the detection of environmental stimuli that lead to the activation of effector cells and sensory neurons.

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The height of the cliff from which the ball fell is 172.3 m.

The time of motion of the ball is the time taken for the ball to travel from its initial position to the final position.

X = Vt

where;

t = X/V

t = (83 m) / (14 m/s)

t = 5.93 s

The height of fall of the ball is calculated as follows;

h = vt +  ¹/₂gt²

where;

h = 0 + ¹/₂gt²

h = ¹/₂gt²

h = ¹/₂(9.8)(5.93)²

h = 172.3 m

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The force required will be 337.5 N

We have given the mass of the gymnast m = 45 kg

We have to find the force applied to the gymnast so that he can accelerate with the acceleration of 7.50m/sec^2

According to newtons law force on any object is given by F = ma, where m is mass and a is acceleration

So the force on the gymnast will be equal to F = 45×7.50  337.50 N

For acceleration of 7.50m/sec^2, we have to apply a force of 337.5 N

Acceleration is defined in mechanics as the rate of change of an object's velocity with respect to time. The orientation of an object's net force determines the orientation of its acceleration. Newton's Second Law states that the magnitude of an object's acceleration is the result of two causes:

The rate of acceleration is expressed in meters per second squared.

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The force of gravity can more easily overcome the force of friction if the ramp is steep. Obviously, gravity causes an object on an incline to move faster down the slope than an object on a flat slope. Because of the increased height, falling takes longer.

Hence, The force of gravity can more easily overcome the force of friction if the ramp is steep.

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Answer:

A. Is the bow made by hand?

Explanation:

Hope this helps.

Answer:

hope it helps

Explanation:

The resultant velocity of the boat would be 22.11  meters/second northeast.

What is Velocity?

Velocity is the overall distance an object travels in a given amount of time.

As stated in the question that A boat crosses a river heading north at a speed of 22 meters per second relative to the water. To get the board's resulting velocity, we should know the river's eastward velocity, which is 2.2 meters per second.

velocity of the river = 2.2 meters/second to the east

velocity of the boat = 22 meters/second

The resultant velocity of the boat = √(22² + 2.2²)

                                                         = 22.11  meters/second.

Thus, The boat's final velocity would be 22.11 meter/second towards northeast.

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The drift velocity increases from A to B and decreases from B to C.

A drift velocity in physics is the average speed that charged particles—like electrons—achieve within a material as a result of an electric field. An electron will typically move randomly across a conductor at the Fermi velocity, producing an average velocity of zero. Applying an electric field causes a little net flow in one direction to be added to this random motion; this is the drift. Free electrons gain velocity in the direction opposite the electric field between collisions when a potential difference is applied across a conductor (and lose velocity when moving in the direction of the field), acquiring a velocity component in that direction in addition to their random thermal velocity.

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The ratio of the masses is m1/m2.In terms of some or all of the variables a, μ, and θ, as well as the magnitude of the free-fall acceleration g.

m1/m2 = a+g(sinθ+μcosθ)/g−a

Acceleration describes the speed and direction changes in velocity over time. Acceleration refers to the change in speed or direction of an item or points traveling straight forward. Due to the constant change in direction, motion on a circle accelerates even while the speed is constant.

To be a vector quantity, acceleration must have both a magnitude and a direction. As a vector quantity, velocity is also. A time interval's velocity vector change divided by that interval's duration is the definition of acceleration. The limit of the ratio of the change in velocity over a certain period to that period as that period approaches zero is used to determine instantaneous acceleration.

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When comparing three different ways of having a ball move down through the same height each circumstance, the acceleration varies.

The Earth's mass is what generates gravity. Your body's mass is affected by the combined gravitational pull of all of its mass. That is what gives you authority. If you were on a planet with a lower mass than Earth, you would also weigh less than you do now.

Every object in the universe that has mass is drawn to every other object, regardless of their size or location. Gravity exists whether you are on the Moon, the Earth, or far out in space. Gravity does not require air or an atmosphere to operate.

The acceleration of a body brought on by the force of the earth's gravitational field is known as the acceleration due to gravity, or simply g. This force can be expressed mathematically as mg, where m is the body mass.

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The data table supports that: Option B, "the force of gravity depends on the masses of the objects interacting." is the correct answer.

What is gravity?

Gravity, also sometimes called as gravitation, is the non-changing force of attraction that binds everything together in mechanics. Being the weakest known force in nature, it has little effect on determining the intrinsic properties of common objects.

In the given data table, the distance is same in all five cases, but we can see that the force of gravity is increasing with increase in mass of any one of the object or both of them. We can also understand it as the force of gravity is increasing with the increase in combined mass of both objects.

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x-component of the rabbit's acceleration ax = -0.833m/s

y-component of the rabbit's acceleration ay =  -6.06m/s

Acceleration is the rate of change in both speed and direction of velocity over time. When anything moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is always shifting, motion on a circle accelerates even while the speed is constant.

Along x axis

Vox = velocity along the positive x-direction = 1.50 m/s

Vfx = 0m/s

ax = (Vfx-Vox)/T

ax=(0-1.5)/(1.8)

ax=-0.833m/s

x-component of the rabbit's acceleration ax = -0.833m/s

Along y axis

Voy = 0 m/s

Vfy = velocity along the negative y-axis -10.9m/s

ay=(Vfy-Voy)/T

ay= (-10.9-0)/(1.8)

ay = -6.06m/s

y-component of the rabbit's acceleration ay =  -6.06m/s

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The displacement of the bicycle is 85.3125m

Displacement of the bicycle may be defined as the change in position of the bicycle. It is a vector quantity so that it has direction and magnitude.

We are given that,

The initial velocity of the bicycle = u = 5m/s

The acceleration of the bicycle is = a = 2.5 m/s²

The time taken by the bicycle = t = 6.5 seconds

Therefore, to get the value of displacement of the bicycle by the equation of motion which is written as,

S = ut + (1/2) at²

Where, S is displacement, u is initial velocity, a is acceleration and t is time taken by the bicycle.

Since , putting the values in above equation then we get,

S = {5m/s × 6.5sec} +{ (1/2) × 2.5m/s² × (6.5 sec)²}

S = 32.5 m + 52.8125m

S = 85.3125m

Therefore, the bicycle would be moves 85.3125m

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Answer:Mars is about half the size of Earth by diameter and has a much thinner atmosphere, with an atmospheric volume less than 1% of Earth's. The atmospheric composition is also significantly different: primarily carbon dioxide-based, while Earth's is rich in nitrogen and oxygen.

Explanation:

Answer:The atmosphere of Mars is much thinner than Earth's. The average surface pressure is only about 610 pascals (0.088 psi) which is less than 1% of the Earth's value. The currently thin Martian atmosphere prohibits the existence of liquid water at the surface of Mars, but many studies suggest that the Martian atmosphere was much thicker in the past.

Explanation:

V=1160*24S/3750 + 2590*16E/3750 is the final velocity.

Given,

An 1160 kg car traveling south at 24.0 m/s

A 2590 kg delivery truck traveling east at 16.0 m/s gets collided and attached to the car.

Solution:

The momentum is conserved here

1160*24 S + 2590*16 E =(1160+2590)V

V = 1160*24 S + 2590*16 E/3750

V=1160*24S/3750 + 2590*16E/3750

The final velocity is V=1160*24S/3750 + 2590*16E/3750.

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Although part of your question is missing, the complete question is "Find the final velocity of the particle if it is initially moving along the x-axis with a velocity of −1.85 m/s. The force shown in the force-time graph acts on a 2.4kg object."

The final velocity of the particle is 1.43 m/s.

The impulse of force is the product of the resultant force and duration of time under the impulse-momentum theorem.

Δρ = ΔF + Δ t = area under F-t curve.

area = area of rectangle + area of triangle( 1/2 base ×height )

∴ area = (2× 3) + 1/2 (2×2) = 8 N

To find the final velocity, Δρ = mass × Δvelocity

let the final velocity be v'

∴  8 = 2.4 × ( v' - (-1.85))

2.4v' = 8- 4.44

v' = 1.43 m/s.

Hence the final velocity of the particle is 1.43 m/s.

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