Once the lander has successfully landed on the surface, what is the minimum amount of thrust required to set it into motion again? Based on your answer, what can you conclude about the moon’s gravity?

In order to calculate the direction of the vector, first let's draw its components:

since the horizontal component is positive and the vertical component is negative, the vector is pointing to the 4th quadrant.

To calculate the angle, we can use the arc tangent as follows:

Rounding to nearest tenth, the direction is -26.6°.

When crystals are pressed along their axis of symmetry, an electric charge is generated. This phenomenon is known as the piezoelectric effect.  

The piezoelectric effect was discovered by Pierre and Jacques Curie, who were French physicists. Piezoelectricity is the property of some materials to generate an electric charge in response to applied mechanical stress.

The charge generated by the piezoelectric effect is proportional to the amount of pressure applied to the crystal, as well as the strength of the crystal. The piezoelectric effect is used in a variety of applications, including microphones, speakers, and sensors.

In microphones and speakers, piezoelectric crystals convert sound waves into an electrical signal or vice versa. In sensors, the piezoelectric effect is used to measure pressure, acceleration, and strain. The piezoelectric effect is also used in medical applications, such as ultrasound technology.

Ultrasound imaging works by transmitting sound waves through the body and measuring the echoes that bounce back. The piezoelectric effect is used to generate and detect these sound waves.

In conclusion, the piezoelectric effect is a fascinating phenomenon that has a wide range of practical applications. It was discovered by Pierre and Jacques Curie in the late 19th century and has since been used in a variety of fields.

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Answer:

J = 500 kg-m/s

Explanation:

Given that,

Initial speed of the motor, u = 5 m/s

Final speed of the motor, v = 7 m/s

Mass of the boat, m = 250 kg

We need to find the impulse applied by the motor. We know that impulse is equal to the change in momentum. It is represented by letter J.

J = m(v-u)

J = 250 (7-5)

J = 500 kg-m/s

Hence, the impulse applied by the motor is 500 kg-m/s.

Answer:

The plants release more heat

An increase in thermal energy on Earth can have a number of effects on plants. Firstly, it can lead to higher temperatures, which can cause some plants to experience decreased growth and increased stress. Additionally, high temperatures can reduce the amount of water available for plants, leading to drought-like conditions in some areas. This can also have a negative effect on the growth of plants. An increase in thermal energy can also lead to an increase in pollen production due to plants flowering earlier in the season, which can be a major problem for people with allergies.

a) To find the speed of the signal in water, we can use the equation:

Speed = Wavelength x Frequency

Where Wavelength is given as 1.5 mm and Frequency is given as 1 x 10^6 Hz.

Speed = 1.5 x 10^-3 m x 10^6 Hz = 1.5 x 10^3 m/s

So the speed of the signal in water is 1.5 x 10^3 m/s

b) To find the period in water, we can use the equation:

Period = 1 / Frequency

Where Frequency is given as 1 x 10^6 Hz

Period = 1 / (1 x 10^6) s = 1 x 10^-6 s = 1 microsecond

So the period of the signal in water is 1 microsecond

c) The speed of sound in air is approximately 343 m/s. Since the frequency of the signal remains constant and the speed of sound in air is different than the speed of sound in water, the wavelength of the signal will also be different. However, since the period is inversely proportional to the frequency and is independent of the medium, the period of the signal in air will be the same as in water, which is 1 microsecond.

Answer:

tadpoles do not have limbs and possess long tails, adult frogs on the other hand have two hind limbs and two fore limbs...

Explanation:

Hope it helps!!!

The physical characteristic of matter that causes it to feel a force when exposed to an electromagnetic field is called electric charge. The two types of electric charges that protons and electrons most frequently carry are positive and negative charges.

Find the force experienced by a particle with a charge of (3x10^-8 c) when it is a distance of (2x10^-2 m) away from a second particle with a charge of (6x10^-7 c)

Each fee = -Q

L is the length between charges.

decreased force =

As seen above, two particles, each with a charge of Q, are locked at a distance L apart. A net electric force F acts on every atom. The initial two particles are now locked on either side of a particle with a charge of +q.

Having said that,

The pressure at either end is

...(I)

If the charge q is positioned in the middle, then

Each end charge is under a force of

....(II)

We must determine the value of q.

Equation use (II)

Fill out the formula using the value of F.

Consequently, q is valued at q/8

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Answer:

The hammer.

Explanation:

The most practiced throw in Ultimate. A hammer is an overhead throw held with the forehand grip

Answer:

HAMMER.

Explanation:

Ah, the hammer. The most practiced throw in Ultimate. A hammer is an overhead throw held with the forehand grip

The initial element X is not provided, we cannot determine the specific final nucleus (atomic mass and atomic number) after the sequence of decays (beta-plus, gamma, and alpha decay).

In nuclear decay processes, the initial element undergoes transformations resulting in the formation of a final nucleus with different atomic mass and atomic number. The sequence mentioned involves beta-plus decay, followed by gamma decay, and finally alpha decay. However, without knowing the initial element, it is not possible to determine the specific final nucleus.

The outcome of each decay depends on the properties of the starting element. Beta-plus decay involves the emission of a positron and a neutrino, gamma decay involves the emission of a gamma ray photon, and alpha decay involves the emission of an alpha particle. The combination of these decays alters the atomic mass and atomic number of the nucleus, leading to the formation of a new element. To provide a precise answer, the identity of the initial element is required.

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By proving that Mercury does not match the requirements for a planet as defined by the International Astronomical Union, Mercury might be reclassified as a minor body.

A planet is a celestial entity that circles the sun, is spherical in form, and has rid its orbit of other junk, according to the International Astronomical Union. Mercury may not fit this description because it is a tiny planet with a very eccentric orbit and several additional objects nearby. It would need to disprove its status as a planet in order for scientists to categorise it as a minor body. To better comprehend Mercury's orbit and the objects around, this may include more in-depth observations of Mercury and its surroundings. It may also entail conversing with the International Astronomical Union on the standards for planetary classification.

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When a rock is transported from the moon to the earth, both mass and weight are changed.

Explanation:

The reason why both mass and weight are changed when a rock is transported from the moon to the earth is that the gravitational field on the surface of the earth is stronger than that on the surface of the moon.

This means that the rock's mass, which is the measure of the amount of matter that an object contains, will remain the same.

However, the rock's weight, which is the force with which an object is attracted to the earth due to gravity, will be different since the gravitational pull on the moon is much weaker than that on the earth. This implies that when the rock is transported from the moon to the earth, it will experience a higher gravitational force which will cause it to weigh more compared to when it was on the moon.

Therefore, both mass and weight will change when a rock is transported from the moon to the earth.

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Answer: Flash

Explanation:

sonic can run 767mph

the flash can run roughly 8.3 million mph

Answer:

Sonic.

Explanation:

There is no direct answer, but Sonic leaves a bigger trail behind him than flash and Sonic has a boost and power-ups.

Frictional force is reduced in smooth surfaces but is large in rough surfaces.

Force is defined as an agent which causes a change in the motion or state of an object.

Forces are of two types:

Contact forces include frictional force.

Frictional forces refers to the force which acts between two surfaces in contact by opposing the relative motion of one over the other

Frictional force depends on the nature of surfaces in contact where rough surfaces produce greater frictional force than smooth surfaces.

Therefore, frictional force is reduced in smooth surfaces but is large in rough surfaces.

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Answer:

1 watt is the same as the transfer of 1 joules per second.

1 watt is the same as the transfer of energy at a rate of 1 joule per second.

A watt is a unit of power, representing the amount of energy transferred or converted per unit of time. Specifically, 1 watt is equivalent to 1 joule of energy being transferred every second. It is a common metric used to measure the rate of energy flow or work done in various systems. For example, a 100-watt light bulb converts electrical energy into light and heat at a rate of 100 joules per second. Understanding power in terms of watts helps us quantify and compare the efficiency and performance of different devices and processes.

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The claim is not valid for a heat pump with a cop of 1.7

We know very well that in this universe, the heat with greatest efficiency possible is Carnot engine.

Carnot engine tells us that  any heat pump with efficiency greater than its efficiency is hypothetical and it doesn't exits in this real world.

We know that if two temperatures are given, then

efficiency of Carnot engine is given by(η)=1-T₁/T₂

where T₁ is the lower temperature,

and  T₂ is the higher temperature.

We have T₂ as 293k and T₁ as 273K.

So, putting this value in above formula, we get

=>η=1-273/293

=>η=(293-273)/293

=>η=(20/293)

=>η=0.068

Now, we have given that heat pump has COP 1.7 which is greater than Carnot's engine efficiency. It means the heat pump is not valid.

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While you push a box you begin to decrease the force you are exerting on the box. The box will reach static equilibrium when there is no net force applied to it in any direction.

Static equilibrium refers to the equilibrium that exists between two or more objects such that there is no net change in the position or direction of the object.

When an object is in static equilibrium, it remains in its position without moving even if a force is applied to it.

Examples of objects  in static equilibrium include:

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Answer:

182 V

Explanation:

We do:V=I.R

V is energy so

I = 7

R = 7+7+3+3+6

V= 7.26

V=182

The number of characters that can be recorded per inch on a magnetic tape is determined by the density of the tape. Data storage and retrieval are essential to the functioning of computing systems. In the past, data was primarily stored on punched cards and punched paper tape.

These storage mediums had several limitations, including low storage capacity and low access speeds. Magnetic tape is a data storage medium that has been utilized to overcome these drawbacks. Magnetic tape is a thin strip of plastic that has a magnetic coating. Data can be stored on the tape by using magnetic recording techniques.The number of characters that can be recorded per inch on a magnetic tape is determined by the density of the tape. The density is the number of magnetic transitions that can be recorded on the tape per unit of length. The higher the density of the tape, the more data that can be stored on it per inch of length.

Magnetic tapes can have a density ranging from 800 bits per inch (BPI) to 6250 BPI or higher. A higher density of tape requires a more sophisticated recording technique, which can limit the access speed of the tape drive. As a result, a balance must be struck between data storage capacity and access speed.

Thus, the correct option is c. Density. The density of the tape determines the number of characters that can be recorded per inch on a magnetic tape. A higher density of tape can store more data but may require more sophisticated recording techniques that can limit access speed.

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Answer:

Weight, W = 125 N

Explanation:

Pressure, P = 5 Pa

Area, A = 25 m²

We need to find how much must a man weigh (force) if the pressure he exerts while standing on one foot which has an area of 25 m² exerts a pressure of 5 Pa. So,

Pressure = force/area

So,

\(F=P\times A\\\\F=5\times 25\\F=125\ N\)

So, the weight of the man is 125 N.

Answer:

200 million electric light bulbs.

Explanation:

First, we must calculate the power of the electric bulb, for this, we use the following equation that relates the energy as a function of time.

\(P=E/t\)

where:

P = power [W] (units of watts)

E = energy = 360000 [J] (units of Joules)

t = time = 1 [h] = 3600 [s]

\(P = 360000/3600\\P= 100[W]\)

In 1 hour 1 electric lightbulb produces 100 [W], now we need to know the amount of energy produced by the Hiroshima bomb. A search made by the internet give us the data of 20 [GW] or [Gigawatts].

We need to remember that 1 Giga = 1 x10⁹

Energy Hiroshima explosion= 20*10⁹[W]

Amount = (20x10⁹)/100

Amount = 200 x10⁶ [bulbs]

That is, we would need an amount of 200 million electric light bulbs.

Using time and velocity relationship, we concluded that he horse will be in air for 0.80 seconds.

velocity-time. In evenly accelerated, straight-line motion, the relationship between velocity and time is straightforward. The magnitude of the velocity change increases with lengthier acceleration. When acceleration is constant, the change in velocity is exactly proportional to time.

Both the horse and the human have constant accelerations, which are 0 for the horse and g downward for the human.

(A) Take into account the man's vertical motion after he leaves the limb (with v₀ = 0, yi = 3m).

Finding the man's time of fall from y = y₀ + vt + 1/2 a t² requires modeling him as a particle with continuous acceleration.

when v₀ = 0

t = √(2(y - y₀)/a)

= √ (2(0 - 3) / -9.28)

= √0.64

= 0.80s

A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0m/s, and the distance from the limb to the level of the saddle is 3.00m. (a) For what time interval is he in the air?

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The force to the east, acting on the object for 0.050 second, would produce the same impulse is 2 N.

Impulse is defined as a phrase that is used to explain or measure how a force changes an object's momentum over time. The object's change in momentum is equal to the impulse it experiences. The formula is F • t = m • Δv. When two objects collide, an impulse occurs, which both causes and equals the change in momentum.

Impulse=F(△t)—— Standard Force ( change in time)

First, determine the impulse of the item that is being acted upon by a force of 10Nacting for a time of 0.010s.

Then, the impulse, (I), should be equal to 10N(.010s)=0.1kg(m/s).

With a different force, the same impulse is now desired for the same object.

As a result, 0.1kg(m/s)=F(0.050s), F=0.1kg(m/s)/0.050s, and F=2N.

Thus, the force to the east, acting on the object for 0.050 second, would produce the same impulse is 2 N.

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The rms voltage across the secondary is 24 V.

An item utilised in the transfer of electric energy is a transformer. AC current is used for transmission. It is frequently used to modify the supply voltage across circuits without altering the AC frequency.

Types of Transformers

Auxiliary Transformers.

Here ,

number of turns in primary coil , Np = 100

number of coils in secondary , Ns = 200

primary voltage , Vp = 12 V

for the ideal transformer

Vs/Ns  = Vp/Np

Vs/200 = 12/100

Vs = 24 V

the rms voltage across the secondary is 24 V.

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Isaac Newton described the idea that the  universe as a giant clock with unified rules for gravity and motion.

The clockwork universe is commonly stated  with Sir Isaac Newton but it turns out that both he and his close philosophical supporter Samuel Clarke both strongly criticized the notion of the clockwork universe, because it left no room for Divine Providence.

The faster a clock moves, the slower time passes according to someone in a different frame of reference.

In the history of science, the clockwork universe compares the universe to a mechanical clock. It continues ticking along, as a perfect machine, with its gears governed by the laws of physics, making every aspect of the machine predictable.

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Answer:

Explanation:

Work out can never be greater than work in because when work out is greater than work in, this means that more energy is being produced than what is being put into the system. This is not possible, as it would violate the law of conservation of energy, which states that energy cannot be created or destroyed, only transformed.

If work out were greater than work in, this would lead to an increase in efficiency, as the system would be able to produce more energy than what is being put into it. However, this increase in efficiency would be unsustainable, as it would eventually lead to an energy imbalance and a decrease in efficiency over time.

Answer:

no

Explanation:

because its cold

soup is hot

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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Sorry your tired, ill try to make it worth reading.

One day I walked outside, I looked around. THEN BAM a wasp lands right on my face. Its hideously sharp stinger impaled my flesh. I could almost hear it going deeper and deeper. I screamed and ran around in circles until it finely flew away. As I started walking to the door I could feel my heart pules where the thing had stung. I opened the door and went into the bathroom. Right in the middle of my face just above my nose was a red dot, with a slightly less red ring around it, like an ateroid impact. I sat down and went over the entire event five times. I decided to go back outside, as I walked around the corner, another wasp landed on me.