A car travels on a straight level road. Starting from rest the car is going 32 fr/s (22mi/h) at the end of 4.2s what is the cars average acceleration in ft/s^2

Your acceleration varies as you travel to the store. Your total speed can change over time; sometimes it can go up, sometimes down. Because doing so would mean you would keep speeding up and eventually pass the store, constant acceleration doesn't happen. In physics, even a decrease in speed is a form of acceleration. When you arrive at it, we can determine how much your average speed was and examine the impact that varying acceleration would have had on it.

According to estimates of the power needed to ride, cyclists deliver about 150 W when riding level terrain, but this increases to about 250 W when cycling up hills. On a flat surface, the average acceleration is 0.231 m/s2, and the acceleration phase has an average duration of 26 seconds. On average, 120 W of power is output during this phase.

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All of the parts of a series circuit are wired together end to end to create a single path for current flow. In a parallel circuit, one component is linked across the other by the same voltage at exactly two electrically common nodes.

A series circuit has two resistors A and B. The total resistance is 27 ohms. A has a resistance of 15 ohms. Calculate the resistance of B.

"12Ω"

In a series circuit the current is constant throughout the circuit and the resistance is the sum of all the resistances in it.

         R_eq = ∑ Ri

in this case we have

         R_eq = R₁1 + 3 R₂

where R₁ is the resistance of A and R₂ the resistance of B.

let's calculate

          27 = 15 + R2

          R2 = 12Ω

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Answer:

3.6 kilometres per hour

Explanation:

for an approximate result, divide the speed value by 16.667

The final speed of the cars after the collision is determined as 6.16 m/s.

The final speed of the cars after the collision is calculated from the principle of conservation of linear momentum as shown bellow.

m1v1 + m2v2 = v(m1 + m2)

where;

Substitute the given parameters and solve for "v".

1250(0) + 3550(8.33) = v(1250 + 3550)

29,571.5 = 4800v

v = 29571.5/4800

v = 6.16 m/s

Thus, the final speed of the cars after the collision is determined as 6.16 m/s.

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When the Ruby-throated Hummingbird flap its wings with an angular speed of 342 rad/s, the period of its flapping motion is 0.018 seconds.

Rotational velocity, sometimes referred to as angular frequency vector, is a pseudovector used in physics to express how quickly an object's angular position or orientation varies over time.

A scalar measurement of the rotating item is its angular speed. A vector representation of the rotating object is the angular velocity. Only the magnitude is specified for angular speed.

It should be noted that w = 2πf

f= frequency

f= 342 / 2 × 3.14

= 54.49Hz

Therefore, the time period will be:

= 1 / Frequency

= 1 / 54.49

= 0.018 seconds.

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The period of its flapping motion

T=0.018 s

This is further explained below.

The process in which an object's location changes in relation to the passage of time is referred to as motion.

The mathematical representation of motion includes variables such as displacement.

Generally, omega,=2pi

f=frequency

f =(omega)/(2pi)=(346)/(2*3.14)=55.09Hz

Timeperiod

T=(1)/(f),

T=(1)/(55.09)

T=0.018 s

In conclusion, A full cycle of vibration takes the amount of time shown by the symbol T, which is referred to as the Period. The length of time it takes for a wave to complete one cycle shortens as its frequency rises.

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The time taken to travel when the speed is 110 km / h is 2.7 hours to cover a distance of 300 km.

We know that,

v = d / t

where,

v = Velocity

d = Distance

t = Time

From the given graph,

At t = 6 hrs, the time taken is 50 km / h

d = 6 * 50

d = 300 km

So this graph represents the time it takes to cover 300 km at different speeds.

At v = 110 km / h

t = 300 / 110

t = 2.7 hrs

The given graph is an example of inverse relationship. An inverse relationship is a hyperbolic relationship in which one variable is the inverse of other variable.

Therefore, the time taken is 2.7 hrs.

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The boat’s resultant velocity is v = 31.0 m/s, and the direction of the boat is 23.2 degrees north of east.

A resultant velocity is calculated using the formula below.

Vm equals Sum Sqrt(Vxi2 + VYj2)

where Vm is the resulting magnitude of velocity.

All x-component velocities are denoted by the letters Vxi.

The y-component of all velocities is called Vyj.

Add all of the values for the x-components together, square that number to get the magnitude of the resultant velocity. Add this to the earlier value after doing the same operation for the y-components. Finally, to determine the magnitude, square the result.

Tan-1 (Vx/Vy) = Va

where Va is the resultant velocity's angle.

Vx is the size of the resultant velocity's x-component.

Vy is the size of the resultant velocity's y-component.

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26.2 miles is equal to 42165 kilometers and 2 hours and 30 minutes is equal to 9000 seconds. Therefore, the speed is 4.685 m/s.

The most crucial scientific notion is measurement. Base or physical basic units are used to quantify a wide range of quantifiable quantities. One such quantifiable metric is speed, which calculates the ratio between the distance an item travels and the time needed to cover that distance.

The pace at which an object's location changes in any direction is referred to as speed.

The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar number.

Therefore, the speed is equal to 4.685 m/s.

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The gravitational field strength at Pluto's surface is 5.827 x 10⁹ N/kg.

The force of gravity between the object and Pluto's surface is 5.827 x 10¹³ N.

The gravitational field strength at Pluto's surface is calculated as follows;

G_E = GM/r²

where;

G_E = (6.67 x 10⁻¹¹ x 1.2 x 10²²) / (1.172 x10)²

G_E = 5.827 x 10⁹ N/kg

The force of gravity between the object and Pluto's surface is calculated as follows;

F = GMm/r²

F = (6.67 x 10⁻¹¹ x 1.2 x 10²² x 100) /(1.172 x 10)²

F = 5.827 x 10¹³ N

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The strength of the force increases when all the forces are pulling in the same direction. When forces are exerted on an item from different angles, the force's strength reduces.

The definition of force is: The pushing or pulling that alters the velocity of a mass item. 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. There are several instances of forces in daily life, including: heft and force (i.e. the weight of something) the force a bat applies to a ball. the pressure that a hair brush applies to hair when brushing it. the pressure exerted by your foot.

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The capacitance of two capacitors connected in series will is

analogous to  two resistors connected in parallel.

In an electric field, a capacitor is a device that stores electrical energy. It has two terminals and is a passive electrical component. Capacitance refers to a capacitor's effect.

The International System of Units' (ISO) standard unit of capacitance is the farad (F) (SI). It denotes a substance's capacity to store an electric charge. Most electrical capacitors are measured in farads, microfarads (F), or nano-farads to express their value (nF).

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The feature of Protea flowers that suits its pollinator, the bush mouse include the following:

This is defined as the process in which pollen grain is transferred from the anther to the stigma of a plant and are aided through agents such as wind, animals etc.

Protea flower is a plant which is pollinated by small mammals such as bush mouse which is as a result of them searching for food in the form of the nectar and the short stout peduncles makes thew plant accessible to these animals.

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cylinder that 25cm diameter have  the greatest elastic potential energy.

The energy that is stored when a force is used to deform an elastic object is known as elastic potential energy. Until the force is released and the object springs back to its original shape, doing labor in the process, the energy is retained. The object may be compressed, stretched, or twisted during the deformation.

The elastic limit of an object intended to store elastic potential energy will normally be high, but the maximum load that an elastic object can support is a property shared by all elastic objects. The elastic limit is the point at which an object can be deformed without losing its original shape

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The amount of force exerted on the box reported to weigh 30kg and accelerates at a rate of 3m/s² is 110N.

The force applied to a body can be calculated by adding the resultant force to the frictional force as follows:

Applied force = resultant force + frictional force

However, the resultant force (F) can be calculated by using the following formula:

Resultant force = mass × acceleration

Resultant force = 30kg × 3m/s²

Resultant force = 90N

Applied force = 90N + 20N = 110N

Therefore, the amount of force exerted on the box reported to weigh 30kg and accelerates at a rate of 3m/s² is 110N.

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Answer:4

Explanation:

The velocity of the aircraft relative to the ground is 125 m /s due East and relative to KC-10A is zero

Given that,

Velocity of KC-10A with respect to ground = 125 m / s due East

The refueling aircraft is in contact with KC-10A in order to refuel KC-10A. In order to remain in contact, the velocity of both the KC-10A  and refueling aircrafts must be equal.  Therefore, if seen from ground both the aircrafts should be moving with same velocities which is 125 m / s due East.

If seen from KC-10A, the refueling aircraft seems to be not moving as both the aircrafts are moving at same velocities. Therefore, in relation to KC-10A the refueling aircraft has zero velocity.

Therefore, the velocity of the aircraft relative to the ground is 125 m /s due East and in relation to KC-10A is zero

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The wavelength of the radio signal, λ = 1.57 m.

To find the wavelength we use the formula,

fλ = c

where,

f is frequency of radio signal

c is speed of light

λ is wavelength

So,

The known values are :

frequency = 1910 MHz

speed of light = 3 x 10⁸ m/s

λ = ?

By rearranging the formula we get,

λ = c / f

Putting values,

λ = 3 x 10⁸ m/s / 1910 MHz

λ = 3 x 10⁸ m/s / 1.91 x 10⁸ Hz

λ = 1.57 m

The wavelength, which will also apply to troughs, is the separation between two wave crests. The frequency is measured in cycles per second (Hz), which is the quantity of vibrations that cross a specific area in a second (Hertz). In this article, the relationship between wavelength and frequency is covered.

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Answer:

It depends I think it could be both a Bond between one person and another. And physical closeness

Explanation:

I would go with a though

Answer:

a, bond between one person and another

Explanation:

took the quiz

It is after a time of 25 minutes that the vacationer picks up his lunch after turning around the dock.

Let the speed of the motorboat be v and the speed of the river be u.

Upstream - The term "upstream" refers to a boat that is moving against the direction of the stream. The boat's upstream speed in this situation is its net speed.

Downstream - A boat is said to be moving downstream if it is moving in the same direction as the stream. In this instance, the boat's downstream speed is its net speed.

Given in the question

Distance travelled downstream = d = 2.8 km

Time = t = 25 mins =  25 × 60 = 1500 seconds

Downstream Speed = v + u

Let the time after he picks the lunch be t' seconds

Distance traveled by boat in t' seconds

d = (v + u )t'

Distance traveled by lunch in t + t' seconds

x = u(t + t')

Upstream Speed = v - u

Distance traveled by boat upstream :

x' = (v-u)t

So accordingly,

x + x' = d

u(t + t') + (v-u)t = (v + u )t'

ut + ut' + vt -ut = vt' + ut'

vt = vt'

t = t'

t' = t = 1500 seconds = 25 minutes

So, the vacationer picks up the lunch 25 mins after turning around.

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Distance from base of the cliff is 33.2 m

Distance is the sum of an object's movements, regardless of direction. Distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.

It is given that

height of cliff = 55.0 m

speed of stone = 26.0 m/s

y1 = 55.0 - 4.9 t^2

y2 = 26 t - 4.9 t^2

y2 - y1 = 26 t - 55

t = 55/26 = 2.11 s

y1 = 33.2 m

Hence, distance from base of the cliff is 33.2 m

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Complete Question

A ball is dropped from the top of a 55.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 26.0m/s The stone and ball collide part way up.

How far above the base of the cliff does this happen in meters?

A new study shows that your body clock doesn't determine when you go to bed, but it does affect how you wake up in the morning.

Cultural pressures and daily responsibilities can override our body clocks and affect how long we sleep, according to a study in Science Advances.

But when people wake up, researchers say, it's not just about doing morning chores like going to work or school, it's also heavily dependent on your body clock.

The new findings are a reminder that sleep is more important than many realize, researchers said. Even if taken, the person still builds up a sleep debt.

Studies have found that middle-aged men sleep the least, often less than the recommended 7-8 hours.

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Answer: 24km

Explanation:

hope this helps

During distracted driving there is a decrease in activity in areas of the brain involved in processing spatial information.

The MRI is the kind of studies that could be used to obtain the activity of the brain. The term MRI stands for magnetic resonance imaging. It is the type of study that shows what parts of the brain are at work when certain activities are going on.

Now, when a person is driving, the person makes use of the parts of the brain that are in charge of spatial information. Hence, during distracted driving there is a decrease in activity in areas of the brain involved in processing spatial information.

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Answer:

6.50m

Explanation:

Vf=0

Vi=11.4

g=-10(against the gravity)

D=x?

Vf²=vi²+2ad

0²=11.4²+2(-10)d

0=129.96+-20d

-129.96=-20d

-129.96/-20=d

D=6.50m

300 s is the time taken.

Electric charge is a physical property that creates a force on matter within an electromagnetic field. A charge can have a positive or negative nature. A substance is considered neutral or uncharged if it has no net charge.

Current is the speed at which electrons pass through a point in a complete circuit. The simplest is current = flow. Ampere or Ampere is the international unit used to measure electrical current.

So here  Q=I x t

       t=Q/I

       =30/0.1

       =300/1

       =300s

so from the above equation, and the given data that 0.1A is the current and the charge is 30C. the time taken is 300s.

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The magnitude  is 4.1.

We must know that a vector is a quantity that has both magnitude and direction. The term magnitude refers to the amount of the vector while the direction shows the place where the vector is headed. It is common to write a vector in bold face or to show the direction of the vector by use of an arrow written above the symbol of the vector.

In this case, we have  vector  that is shown in the given directions and we have been asked to find the magnitude of the vector. We could find the magnitude of the vector from; √(1)^2 + (4)^2 = 4.1

Thus, the magnitude is 4.1.

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In a tree if the same rock is placed in four different locations, the rock will have the most potential energy.

Potential energy is a form of energy stored that is dependent on the relationship between different system components. When a spring is compressed or stretched, its potential energy increases.

If a steel ball is raised just above ground as opposed to falling to the ground, it has more potential energy. An object has potential energy as a result of its position in relation to other objects. Potential energy is so named because it has the ability to transform into other types of energy, like kinetic energy.

Potential energy is the energy that is held within a material or an object. Energy in an object held vertically is known as gravitational potential energy. Potential energy that can be stretched or compressed is known as elastic potential energy.

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