The pages of a book are numbered i to 200 and each leaf is o.10 mm thick.If each cover is 0.20mm thick,what is the thickness of the book.

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Answer: 160 km

Explanation:

Answer:

Explanation:

Given:

P = 12 W

R = 270 Ω

t = 2.5 s

____________

Q - ?

Power:

P = I²·R

Current strength:

I = √ (P / R) = √ (12 / 270) ≈ 0.21 A

Charge:

Q = I·t = 0.21·2.5 = 0,525 C

Answer:

The basic concept of how a simple motor works is that you put electricity into it at one end and an axle (metal rod) rotates at the other end giving you the power to drive a machine of some kind. The simple motors you see explained in science books are based on a piece of wire bent into a rectangular loop, which is suspended between the poles of a magnet. In order for a motor to run on AC, it requires two winding magnets that don’t touch. They move the motor through a phenomenon known as induction.

I hope this helps! Let me know if I'm wrong!

Explanation:

Answer:

27000 J

Explanation:

The frictional force if greater than the applied force, then the movement of the block gets resisted against the applied force and the block does not undergo any displacement.

Force is an external agent actin on an object to change its motion or to deform it. There are various kinds of forces such as frictional force, gravitational force, magnetic force etc.

If two or more same or different forces acting on an object from the same side they will add up in magnitude. If two forces with same magnitude are acting from opposite direction of the object, then they will cancel each other and the net force will become zero. This situation is called the balanced force.

If two unequal force acts from opposite direction, the net force is the substracted value of their magnitudes and the situation is called unbalanced force.

Here, the frictional force if greater than the applied force, then the movement of the block gets resisted against the applied force and the block does not undergo any displacement.

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When Earth is closer to the sun, there will be hotter climate. A little movement that takes one closer to the sun could lead to a huge impact.

If I put a planet in orbits 2, 6, and 75, all planets will orbit the sun successfully if the sun's mass is 1x, and at least one planet will fall inside the habitable zone.

If I put a planet in orbits 84, 1, and 5, at least one of them will fall into the habitable zone if the sun's mass is 2x, and all planets will orbit the sun successfully.

If I put a planet in orbits 672 and 7, at least one of them will fall into the habitable zone if the sun's mass is 3x, and all planets will orbit the sun successfully.

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Energy floating hands with a constant chill. growing desire to resist the Führer Only after he had a difficult time recovering from his push-ups.

steaming water Heat from the flame travels into the saucepan when the water boils, warming the liquid at the bottom of the pan. As the hot water rises as well as the cooled water falls to replace it, a passed through ( transmitted is produced.

Thermal energy is transferred from heated to cool places by convection. Convection is the process by which warmer portions of a gas or liquid move toward cooler areas of the same liquid or gas. Then, cooler liquid or gas replaces the heated portions that have ascended higher.

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(a) State assumptions, and derive the distribution of the number of days]until they meet the first left turning vehicle.Given, the probability of meeting a left turning vehicle is 0.01 for each day. Let X be the number of incidence free days till they meet the first left turning vehicle.

Then, X follows a geometric distribution with parameter p = 0.01. The pmf of X is given by:

\(P(X = k) = (1 - p)^(k-1) * p\)

(b) What is the distribution of the number of days until they meet the second left turning vehicle?

Let Y be the number of days until they meet the second left turning vehicle.

Since each day is independent of each other, the distribution of Y is the same as that of X. That is, Y also follows a geometric distribution with parameter p = 0.01.

(c) The probability of at most 60 incidence free days till they meet the second left turning vehicle is given by:

\(P(Y ≤ 60) = 1 - P(Y > 60)\)

= 1 - (1 - 0.01)^60 =

1 - 0.3967 = 0.6033

(d) The probability that they meet the second left turning vehicle on the fifth day of the first week is given by:

P(Y = 5) = (1 - 0.01)^4 * 0.01

= 0.0096

(e) Find a suitable Poisson approximation to the distribution of the number X of days that they meet left turning vehicles in five years. Let X be the number of days that they meet left turning vehicles in 5 years. Then X follows a Poisson distribution with parameter

λ = 5 * 1150 * 0.01 = 57.5.

(f) Let Y have the Poisson distribution in

(e), use the Matlab to compute \(d=∑ i=0[infinity]∣P(X=i)−P(Y=i)\)

∣ Report the value d and attach the Matlab commands here.

Matlab code:lambda

= 57.5;

X = 1:150;

P_X = geopdf(X, 0.01);

P_Y = poisspdf(X, lambda);

d = sum(abs(P_X - P_Y));

d Value of d = 0.1339

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Answer:

Inertia

Explanation:

Part of Newton's Laws of Motion

Answer:

  the torque on the joint at the main stem is increased as the person moves toward the end of the branch, as is the stress within the branch.

Explanation:

In general, a branch will break when its load limits are exceeded, and/or when the stress is applied at a rate that exceeds its ability to accommodate.

Two things happen when a person moves toward the end of a tree branch:

So, if the branch doesn't break due to increased stress within the branch, the joint may fail due to its torque limit being exceeded as a person moves closer to the end.

__

From an engineering point of view, the stress limits constitute a threshold that will result in breakage with probability 1 when exceeded. When the limits are far above the applied stress, the probability of breakage is near 0. So, one could say the probability increases when the person approaches the end of the branch, since it goes from near 0 to 1.

\(y = d \times sin \alpha \\ y = 13.04 \times sin3 \\ y \approx8.028 \: meters\)

Answer:

gravity

Explanation:

ok what i understand from your query is that a spring balance with a metal piece attached to it is weighing it down, a spring balance is measured in newtons (f=ma), the acceleration part is gravity (-9.81 m/s^2). The metal piece is attached to the string.

hope this answers your question and please take my answer with a grain of salt and refer to some webpages or videos

Answer:

See below

Explanation:

speed = wavelength * freq

    120 =  4 * f

f = 30 Hz

period = 1/f =   1/30 periods per sec

Maria throws two stones from the top edge of a building at a speed of 20 m/s, The time is mathematically given as

t=4.5 sec.

Generally, the equation for speed  is mathematically given as

V = u+at

Therefore

0 = 22-9.8xt.

t = 22 /9.8 sec

t = 2.24489.

The same time will be taken from max^m height to point O

The extra time is taken

t=4.49 sec.

t=4.5 sec.

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Of the given locations, the clocks run slowest on the surface of a 2 solar mass neutron star.

Acceleration due to gravity on earth = 9.8 m / s²

Acceleration due to gravity on moon = 1.62 m / s²

Acceleration due to gravity on 2 solar mass neutron star = 19.6 * \(10^{11}\) m / s

Acceleration due to gravity is the force which an object in its gravitational field will experience.

Higher the the acceleration due to gravity, stronger will be the gravitational field. Stronger the gravitational field, slower the time will pass. Since g value on 2 solar mass neutron star is higher, gravitational field there will be stronger than Earth and the Moon.

Therefore, the clocks run slowest on the surface of a 2 solar mass neutron star.

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A cylindrical pulley with a mass of 7.4 kg, radius of 0.702 m and moment of inertia 1 2 m r2 is used to lower a bucket with a mass of 1.6 kg into a well the linear acceleration of the falling bucket is 3.9174 m/s^2.

To find the linear acceleration of the falling bucket, we can use the equation for the motion of a falling object under the influence of gravity:

y = (1/2)gt^2

where y is the distance fallen, g is the acceleration due to gravity, and t is the time elapsed.

Since the bucket is attached to a pulley, its linear acceleration is related to the angular acceleration of the pulley, which can be found using the equation:

a = rα

where a is the linear acceleration of the bucket, r is the radius of the pulley, and α is the angular acceleration of the pulley.

The angular acceleration can be found using the equation:

τ = Iα

where τ is the torque applied to the pulley, and I is the moment of inertia of the pulley.

In this case, the torque is due to the weight of the bucket, so we have:

τ = mgy

where m is the mass of the bucket, g is the acceleration due to gravity, and y is the distance fallen.

Substituting in the given values, we have:

τ = (1.6 kg)(9.8 m/s^2)(0.702 m) = 10.9656 N·m

The moment of inertia of the pulley is given as 1/2mr^2, so we have:

I = (1/2)(7.4 kg)(0.702 m)^2 = 1.9663 kg·m^2

Using τ = Iα, we can solve for the angular acceleration:

α = τ/I = 10.9656 N·m / 1.9663 kg·m^2 = 5.5801 rad/s^2

Finally, we can use a = rα to find the linear acceleration of the bucket:

a = rα = (0.702 m)(5.5801 rad/s^2) = 3.9174 m/s^2

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Answer: 54.55 m/s

Explanation:

Distance = 300 m

Time = 5.5 s

Average Speed = Total Distance/Total Time

= 300/5.5

= 54.55 m/s

Hope this helped..

Answer:

Explanation:

Energy is transferred from the sun to Earth via electromagnetic waves, or radiation. Most of the energy that passes through the upper atmosphere and reaches Earth's surface is in two forms, visible and infrared light. ... Once energy has been absorbed by the Earth system, it is transformed and transferred

The flow of energy when converted into the earth system is because of the transformation of energy.

The energy should be transferred from the sun to earth through electromagnetic waves, or radiation.

Many of the energy should be passed via the upper atmosphere and then reached the surface of the earth in two forms i.e. visible and infrared light.

In the case when the energy should be absorbed so it should be transformed and transferred.

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The baseball bat's actual velocity is -4.625 m/s, which indicates that it is travelling in the opposite direction at a speed of 4.625 m/s.

The ball will bounce off the bat at a speed of around 20 km/h if the bat is held in a fixed position and a ball is launched at it at, say, 100 km/h.

The following is the equation for momentum conservation:

m1v1 + m2v2 = m1v1' + m2v2'

By entering the specified values, we obtain:

(0.8 kg)(12 m/s) + (0.13 kg)(-39 m/s) = (0.8 kg)(v1') + (0.13 kg)(13 m/s)

By finding v1', we obtain:

v1' = [(0.8 kg)(12 m/s) + (0.13 kg)(-39 m/s) - (0.13 kg)(13 m/s)] / (0.8 kg)

v1' = -4.625 m/s

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The rate of heat flow through the door is 48 Joules per second (J/s).

To calculate the rate of heat flow through the door, we can use the formula for heat conduction:
Q/t = k * A * (T1 - T2) / d
where:
Q/t = rate of heat flow (J/s)
k = thermal conductivity (0.04 J/s°C)
A = area of the door (m²)
T1 = inside air temperature (20°C)
T2 = outside air temperature (-10°C)
d = thickness of the door (m)
First, let's find the area of the door:
A = length * width = 2m * 0.8m = 1.6 m²
Now, let's convert the door thickness from cm to m:
4cm = 4/100 = 0.04m
Next, plug the values into the formula:
Q/t = 0.04 J/s°C * 1.6 m² * (20°C - (-10°C)) / 0.04m
Now, simplify the equation:
Q/t = 0.04 J/s°C * 1.6 m² * 30°C / 0.04m
Q/t = 0.04 J/s°C * 1.6 m² * 30°C / 0.04m = 48 J/s
The rate of heat flow through the door is 48 Joules per second (J/s).

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Answer:

the way you speak with your entire body

Explanation:

Body language is the way you speak with your entire body. Therefore, the correct option is option D.

Body language refers to a form of communications in which information is expressed or conveyed via bodily behaviors rather than words. Face expressions, body posture, movements, eye movement, touch, and use of space are examples of this type of behavior.

Although the phrase "body language" is typically used in reference to people, it can also be used in reference to animals. Kinesics, another name for the research of body language, is related. Although facial expression is a crucial component of communication, much of it occurs subconsciously. Body language is the way you speak with your entire body.

Therefore, the correct option is option D.

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by the formula

s=d/t

speed=distance/time

the bigger the distance that has been traveled over a period of time the bigger the speed

Speed = Distance / Time

If time is held constant, then speed is directly proportional to distance. If distance is held constant and time varies, then the speed is inversely proportional to the time taken.

The correct answer is "the moment of inertia". Rotational kinetic energy refers to the energy of an object that is rotating around an axis, while linear kinetic energy refers to the energy of an object that is moving in a straight line.

In the case of rotational kinetic energy, the mass of the object is replaced by the moment of inertia, which takes into account the object's shape and distribution of mass around the axis of rotation. The moment of inertia determines how difficult it is to start or stop an object's rotation. Therefore, when calculating rotational kinetic energy, it is important to use the moment of inertia instead of the mass.

This allows us to accurately describe and analyze the behavior of rotating objects in various contexts. Rotational kinetic energy is analogous to linear kinetic energy, with the mass replaced by the moment of inertia (option a).

In linear motion, kinetic energy is given by the formula KE = 0.5 * m * v2, where m is the mass and v is the velocity. In rotational motion, kinetic energy is given by the formula KE_rotational = 0.5 * I * 2, where I is the moment of inertia and is the angular velocity.

The moment of inertia plays a similar role in rotational kinetic energy as mass does in linear kinetic energy, accounting for the distribution of mass around the axis of rotation and its resistance to changes in rotational motion.

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A current of 4.75 A is going through a 5.5 mH inductor is switched off. It takes 8.47 ms for the current to stop flowing. The average induced emf opposing the decrease of the current is approximately 26.125 volts.

To calculate the magnitude of the average induced electromotive force (emf) opposing the decrease of the current, we can use Faraday's law of electromagnetic induction.

Faraday's law states that the induced emf in an inductor is equal to the rate of change of magnetic flux through the inductor. Mathematically, it can be expressed as:

emf = -L * (di/dt)

Where:

emf is the induced emf (in volts)

L is the inductance of the inductor (in henries)

di/dt is the rate of change of current (in amperes per second)

Given:

Current (I) = 4.75 A

Inductance (L) = 5.5 mH = 5.5 x \(10^{-3}\) H

Time (t) = 8.47 ms = 8.47 x \(10^{-3}\)) s

To find di/dt, we need to calculate the change in current over time. Since the current is decreasing to zero, di will be the initial current minus the final current, and dt will be the time taken for the current to decrease.

Initial current (Iinitial) = 4.75 A

Final current (Ifinal) = 0 A

di = Iinitial - Ifinal = 4.75 A - 0 A = 4.75 A

dt = 8.47 x \(10^{-3}\) s

Now we can calculate the magnitude of the average induced emf:

emf = -L * (di/dt)

= - (5.5 x \(10^{-3}\) H) * (4.75 A / 8.47 x \(10^{-3}\) s)

Calculating the value:

emf = - (5.5 x \(10^{-3}\) H) * (4.75 A / 8.47 x \(10^{-3}\) s)

= - (5.5 x \(10^{-3}\)) H) * (4.75 A / 8.47 x \(10^{-3}\) s)

= - (5.5 x 4.75) V

= - 26.125 V

Taking the magnitude, the average induced emf opposing the decrease of the current is approximately 26.125 volts.

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Answer:

The first reason for children to have pretend play is that it allows the child to learn how to interact socially. The child is able to take turns, share responsibility, develop how people feel and react the situation. Another reason is that it helps the child develop their critical thinking skills. They may have to creatively solve a problem, or think what they may need in real life for the pretend play. It increases the child's ability to think through those types of situations. The final reason it is important for a child to have pretend play is that it helps develop their language skills. If the child is imitating a dad, mom, teacher, etc. they will attempt to use the same language that person uses. This helps the child connect new language abilities and skills.

Explanation:

Answer:

The top 3 reasons for encouraging children to pretend play and make-believe include:

1. To encourage imagination and creativity.

2. To support social and emotional development.

3. To improve language and communication skills.

Answer:

When a load resistor is added to a digital circuit, increasing the clock frequency does not directly help restore the output voltage. The clock frequency determines the rate at which digital signals are processed and transmitted within a circuit but does not have a direct impact on the output voltage level.

The output voltage level of a digital circuit is primarily determined by the logic levels of the input signals and the characteristics of the circuit components, such as the power supply voltage and the voltage thresholds of the logic gates. The load resistor affects the voltage drop across it and the current flowing through the circuit, which can indirectly influence the output voltage level.

Explanation:

Adding a load resistor doesn't have any relation with the clock frequency in the context of digital circuits. Hence, increasing the clock frequency won't help restore the output voltage.

What is a resistor?

What is voltage?

What happens when the load resistor is added?

Does increasing the clock frequency help restore the output voltage?

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Answer:

5.4mL

Explanation:

20.25g divided by 3.75g/mL= 5.4mL

Answer: That is to say, a satellite is an object upon which the only force is gravity. Once launched into orbit, the only force governing the motion of a satellite is the force of gravity. Newton was the first to theorize that a projectile launched with sufficient speed would actually orbit the earth.

Explanation: Because Earth-orbiting objects follow elliptical paths around Earth and not a straight line, forces cannot, by definition, be balanced. Force is directional. It is a push or a pull in a particular direction.