How many joules is 3 lightning bolts?

Yes , the two parallelograms are considered congruent if they have two pairs of congruent opposite angles.

The opposite angles of the parallelogram are congruent which shows equality of two parallelograms so we can conclude that the two parallelograms are considered congruent if they have two pairs of congruent opposite angles.

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Answer:

To solve this problem, we can use vector addition. We can represent the velocity of the boat as a vector pointing east with magnitude 7 mph, and the velocity of the wind as a vector pointing northwest with magnitude 10 mph.

To add these two vectors, we can break the wind velocity vector into its x and y components, using trigonometry. Since the vector is pointing northwest, we know that it makes a 45 degree angle with both the x and y axes. Therefore, the x component is:

10 mph * cos(45) = 7.07 mph

and the y component is:

10 mph * sin(45) = 7.07 mph

Now we can add the x component of the wind velocity vector to the velocity of the boat, since they are both pointing in the same direction (east):

7 mph + 7.07 mph = 14.07 mph

The y component of the wind velocity vector is pointing north, while the velocity of the boat is pointing east, so we cannot simply add them. Instead, we can use the Pythagorean theorem to find the magnitude of the resultant vector:

sqrt(14.07^2 + 7.07^2) = 15.78 mph

The direction of the resultant vector can be found using trigonometry. The angle between the resultant vector and the east direction is:

tan^-1(7.07/14.07) = 26.56 degrees

Therefore, the boat is sailing at a speed of 15.78 mph in a direction that is 26.56 degrees north of east.

Explanation:

Answer:

Oh for number this is the one?

We can calculated the maximum power as follows:

Since the heater consumes 1600W, we can write the following inequality:

Where n is the number of heaters, so:

Answer:

2 heaters

The velocity after two minutes is v = 616.67 m/s

Using the equation final velocity = beginning velocity + acceleration * time, the final velocity of this bus after two minutes is determined. Symbolically, v is represented as follows: vi = 60 km/h, a = 5 m/s2, and t = 2 minutes. First, we must translate 60 km/h into m/s. 50/3 m/s is equal to 60 km/h or 60,000 m/36 seconds.

When determining the final velocity, v

v = vi + a * t

120 seconds at v = 50/3 m/s + 5 m/s2

v = 50/3 m/s + 600 m/s

v = 16.67 m/s + 600 m/s

v = 616.67 m/s

After two minutes, the bus's speed is 616.67 m/s. For a bus, it is a pretty implausible velocity. The speed of this object is 2,220 km/h, exceeding the speeds of both air and jet aircraft. Your acceleration time should have been capped at 20 seconds or less.

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A cell that is designed to use dry-cell batteries and operates between 1.0 and 1.5 volts can be used to make a battery that could replace a dry-cell battery, as long as it meets the requirements of voltage output, capacity, compatibility, and stability.

Yes, a cell designed to operate between 1.0 and 1.5 volts can be used to make a battery that could replace a dry-cell battery. Here's a step-by-step explanation of why this is possible:
1. Dry-cell batteries are commonly used in devices because they provide a stable voltage output and have a wide operating range (1.0 to 1.5 volts), which is suitable for most electronic devices.
2. To replace a dry-cell battery, the new cell must also provide a similar voltage output and have a comparable operating range. If the new cell is designed to operate between 1.0 and 1.5 volts, it meets this requirement.
3. Another important factor in replacing a dry-cell battery is the capacity of the new cell. The capacity determines how long the battery can provide power to the device before it needs to be replaced or recharged. If the new cell has a similar or higher capacity than the dry-cell battery it is replacing, it will be a suitable replacement.
4. Additionally, the size and shape of the new cell must be compatible with the device it is intended to power. Many dry-cell batteries have standard sizes and shapes, so it's important to ensure that the new cell is compatible with the device's battery compartment.
5. Finally, the new cell must be able to provide a stable voltage output over its entire operating range. This ensures that the device will function properly and efficiently.
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Field strength is 0.03234 N/kg. The formula to determine the field strength is given by:

F = mg Here, F is the field strength, m is the mass, and g is the gravitational field strength.

Substituting the values given: Weight = 0.96 N Mass = 3.3 g = 0.0033 kg = 9.8 m/s² Therefore, F = mg = 0.0033 kg × 9.8 m/s² = 0.03234 N the field strength is the gravitational force acting on a unit mass. It is measured in newtons per kilogram. The field strength is an expression of the strength of a gravitational field. In this case, the mass of the object is 3.3 g, which can be converted to kilograms by dividing by 1000.

The weight of the object is given as 0.96 N. Using the formula

F=mg, where m is the mass and g is the gravitational field strength, we can calculate the field strength as 0.03234 N/kg.

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3415.2 grams

Explanation

to solve this we can use a rule of three

Step 1

Let

water= 100-84%= 16%

so,

for the water , 1 mL = 1 gram , so

now, let represents the mass of the aluminiu, so

a) the ratio is the same, so we have a proportion

Step 2

finally, solve for x

so, the mass of the aluminum is

3415.2 grams

Answer:

Color

Explanation:

Thus, for stars, considering them as “black bodies”, we can get an approximate figure for their temperature by measuring their dominant frequency (color). Technically scientists measure the brightness of the blue light and that of red light from the star, and from this they can calculate the temperature of the star.

Answer: color answer D

Explanation:

Answer:

c

Explanation:

Explanation:

she human activity for

Answer:

60m/s

Explanation:

momentum = Mass × Velocity

Initial Momentum = 12 × 10

= 120

Final Momentum = 12×15

=180

Change in Momentum = 180 - 120

= 60m/s

Answer:

Explanation:

formula for change in momentum = F =∆p/∆t

F∆t = ∆p

∆p = m(v - Vo)

∆p = 12(15-10)

=12(5)= 60

The statement that best describes what it means to compete is following the rules, understanding the process of sports, respecting competitors.

Competition is the act of battling or being in a rivalry with another for the same thing, position, or reward.

Sport is a competitive activity where contestants or participants contend for the same reward.

However, the participants in a competition must do the following:

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Answer:

The Alkali Metals

sodium is a member of the alkali metal family with potassium (K) and lithium (Li). Sodium's big claim to fame is that it's one of two elements in your table salt. When bonded to chlorine (Cl), the two elements make sodium chloride (NaCl).

Answer:

Explanation:

Sodium is a member of the alkali metal family, along with potassium (K) and lithium (Li). The fact that sodium is one of two elements in table salt is its main claim to fame. When bonded with chlorine (Cl), the two elements combine to form sodium chloride (NaCl).

Solar cell is a device which directly converts solar energy into electric energy. Option D is the correct answer.

Using the photovoltaic effect, a natural physical and chemical phenomena, a solar cell, also known as a photovoltaic cell, is an electrical device that transforms light energy directly into electricity. Option D is the correct answer.

It is a kind of photoelectric cell, which is characterized as a component whose electrical properties, such as current, voltage, or resistance, change in response to light. The electrical components of photovoltaic modules, sometimes referred to as solar panels, or individual sun cell devices, are frequently those. Utilizing a variety of methods, including solar power to produce electricity, solar thermal energy, and solar architecture, solar energy is the radiant light and heat from the Sun.

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A solar cell directly converts solar energy into electrical energy.

A solar cell, also known as a photovoltaic cell, is a device that directly converts solar energy into electrical energy. It is made up of semiconductor materials, usually silicon, which absorb photons from sunlight and release electrons. When sunlight hits the solar cell, the photons transfer their energy to the electrons in the semiconductor material, causing them to become excited and move freely. This creates a flow of electrons, known as an electric current, which can be harnessed and used to power electrical devices.

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Answer:

Explanation:Digestive juices secreted by various organs such as salivary glands in the mouth, stomach, liver and pancreas help in the process of digestion of food. Saliva secreted by the salivary glands in the mouth aids in the breakdown of starch present in the food to simple sugar

The kinetic energy of balls is conserved, the collision is elastic.

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Answer:

Explanation:

12,400,000

The angular magnification can be calculated using the formula:

M = 1 + (d/f)

Where M is the angular magnification, d is the near-point distance of the jeweler (22.4 cm), and f is the focal length of the magnifying glass (7.90 cm).

Substituting the given values, we get:

M = 1 + (22.4/7.90)

M = 1 + 2.83

M = 3.83

Therefore, the angular magnification when the diamond is held at the focal point of the magnifier is 3.83.



When an object is viewed through a magnifying glass, it appears larger than its actual size. The magnification of the object depends on the focal length of the magnifying glass and the distance between the object and the lens.

In this question, we are given the near-point distance of the jeweler (d) and the focal length of the magnifying glass (f). Using the formula for angular magnification, we can calculate the magnification of the diamond when it is held at the focal point of the magnifying glass.

The formula for angular magnification is M = 1 + (d/f), where M is the angular magnification, d is the near-point distance of the jeweler, and f is the focal length of the magnifying glass.

Substituting the given values, we get M = 1 + (22.4/7.90) = 3.83. This means that the diamond will appear 3.83 times larger when viewed through the magnifying glass compared to when viewed with the  eye.

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Answer:

True.

Explanation:

The kneecap is scientificlaly referenced as the Patella.

Answer:

definitely top answer

Explanation:

because it make sense

1. Convert the mass of \pu{67.5 mg}67.5 mg67, point, 5, space, m, g to grams: 67.5 mg = 0.0675 g

2. Calculate the molar mass of \ce{sr}srs, r:Molar mass of \ce{sr}srs, r = 87.62 g/mol

Molar mass is a measure of the amount of mass contained in one mole of a given substance. It is expressed in grams per mole (g/mol) and is numerically equal to the atomic or molecular weight of the substance. The molar mass of a substance is calculated by adding together the atomic masses.

3. Calculate the number of moles:

n = m/M = 0.0675 g/87.62 g/mol = 0.0007704 mol

4. Calculate the number of atoms:

Number of atoms = n x Avogadro's number

= 0.0007704 x 6.022 x 10^23

= 4.24 x 10^20 atoms

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The current the resistors in series are the same but their voltage will be different. In the case of parallel resistors the voltage will be the same and current will be different.

Resistance in a circuit is the hindrance to current . According to Ohm's law, resistance is the ratio of voltage to the current.

In a series circuit all the components are connected in series. Whereas in a parallel circuit the components are connected in parallel.

In a series circuit the output current from one resistance is the input current of the next resistor. Hence, current through all resistors are the same but their voltage differs.

Thus, total resistance R = R1 + R2 + R3 + …

In parallel circuits all the resistors have the same voltage but they differ in current.

then the total resistance R = 1/R1 + 1/R2 + 1/R3 + ..

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Answer: The voltage required to move a current of 2mA through a resistor with a resistance of 0.5 kΩ can be calculated using Ohm's law, which states that the voltage across a resistor is equal to the current flowing through it multiplied by the resistance:V = I * RV = 2mA * 0.5 kΩV = 1VSo, the voltage required to move 2mA through 0.5 kΩ is 1 Volt.

The magnitude of velocity in east direction will be 650 N approximately.

What is velocity ?

velocity is given by the change in distance by the object with respect to change in time. It is a vector quantity and having S.I unit as m/s.

Here it is given that magnitude of velocity is 750 N and making an angle of 30 degree with x axis in counterclockwise direction as shown in figure below :

Now resolving and writing magnitude of velocity V in x and y direction respectively :

\(\begin{aligned}Vcos\theta&= 750 cos30^{o}=650 \:m/s\\Vsin\theta&= 750sin30^{o}= 375 m/s\end{aligned}\)

It should be noted that \(vsin\theta\) is acting in negative y direction.

Therefore, the magnitude of velocity in east direction is 650 m/s

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Answer:

0.333

Explanation:

Weight of the sinker in water = 25gf

Weight of cork in air and sinker in water = 25gf + 2.5gf

= 27.5gf

Weight of the cork and sinker in water = 20gf

Loss of weight of cork in water = 27.5- 20 = 7.5gf

Rd of cork = weight of cork in air/ loss of weight of cork in water

= 2.5/7.5

= 1/3

= 0.333

Hence the Relative density of the cork is 0.333

A.  Time taken for swing of a pendulum is 2.3 seconds per swing.

B. To find the time for one swing more accurately, the student can increase the number of swings, use a stopwatch with higher precision, minimize external disturbances, and repeat the experiment to calculate the average time.

The time taken for 20 swings of a pendulum is 46 seconds. To find the time for one swing, we need to divide the total time by the number of swings.

a. Time for one swing: 46 seconds / 20 swings = 2.3 seconds per swing.

To find the time for one swing more accurately, the student can employ the following techniques:

1. Increase the number of swings: By measuring the time for a larger number of swings, the student can reduce the impact of measurement errors and obtain a more precise average time. For example, measuring the time for 100 swings and then dividing by 100 would provide a more accurate estimate.

2. Use a stopwatch or timer with higher precision: Using a stopwatch or timer that provides more decimal places or higher precision can help capture smaller time intervals more accurately. This can reduce rounding errors and improve the accuracy of the measurement.

3. Minimize external disturbances: To ensure accurate timing, it is important to minimize external disturbances that may affect the pendulum's motion, such as air drafts or vibrations. Conducting the experiment in a controlled environment can help reduce these disturbances and enhance measurement accuracy.

4. Repeat the experiment: Performing the measurement multiple times and calculating the average time can help account for any inconsistencies or random errors in the measurements. This can lead to a more reliable and accurate estimate of the time for one swing.

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1. As he climbs... He's gaining potential Energy.

PE=mgh = 60x9.8x3.5=2058J. This is the potential Energy gain.

2. Power = Workdone/Time.

65kW=65,000watts

65000=Workdone/35

Workdone=65,000 x 35=2,275,000J

Recall... Workdone=Force x Distance

given distance =17.5m

Force =Workdone/distance

=2,275,000/17.5

Force=130,000N or 130kN.

3.Potential Energy Increases or decreases as height increases or decreases respectively.

a) PE=mgh =25x9.8x425=104,125J.

b) change in PE=mg(h°-h) =25 x 9.8(225-425)

= -49000J. The Energy is negative because the system loses 49000J.

4. At Constant velocity; d=vt

where d=distance,v=velocity, t=time

v=d/t

1.8km=1800m

10min =10x60=600seconds

v=1800/600

v=3ms-¹

KE=1/2Mv²

=1/2 x 45 x 3² =202.5J.

5.Mary weighs 505N.

Weight=Mass x acceleration due to gravity

W=mg

505=m x 9.8

m=505/9.8 =51.53kg.

Since Mary is coming down... she's decreasing her potential energy cos Potential Energy Decreases as you decrease your height. So Her Initial height was 5.5m... she alighted to the ground which we'll say is the ground(h=0)

Change in PE=mg(h°-h)=51.53 x 9.8(0-5.5) = -2777.5J.

This energy is negative because she lost potential Energy.

6. Since each has a Mass of 45kg... and they're moving together.... Their combined Mass =45+45=90kg.

Velocity given as =10ms-¹

a)Combined KE=1/2MV² = 1/2 x 90 x 10² =4500J.

b)Ratio of combined Mass to Katias mass = CM/KM

Where CM=Combined Mass

KM=Katia's mass

=90/45 =2:1

c) Katia's kinetic E =1/2 x 45 x 10² =2250J.

Ratio of combined to Katia's = CK/KK

CK=Combiner Kinetic Energy

KK=Katia's kinetic energy

= 4500/2250 =2:1.

This answer should be the same cause from the Formula KE=1/2mv²

KInetic Energy varies Directly with Mass

so If the ratio of Masses is 2:1... That of KE should be the same because of their direct Relationship✌.

7.The height at which the Rocket Engine stops is not how far it went. Theres a Minute height that it'll still go before it starts going back down.

from the question... The energy when the engine stops is 1960J

PE=mgh

1960=10x9.8xh

h=1960/98 =20m.

The engine stops at this height

but The additional Minute height that was added before itll start falling cant be calculated from the insufficient info given in this question. If we had the Energy at the additional height-added... We can calculate that height and then subtract 20 from it. That will give the additional added height.

Thats pretty Much Everything✌

Spectro... Out

The energy in the system containing DeAnna and Earth gain from this climb will be 2058J.

From the information, DeAnna, with a mass of 60.0 kg, climbs 3.5 m up a gymnasium rope. The potential energy will be:

= mgh

= 60 × 9.8 × 3.5

= 2058J

When an electric motor develops 65 kW of power as it lifts a loaded elevator 17.5 m in 35s, the force that the motor exerts will be:

= Work done / Time

= 2275000/17.5

= 130000N

The shell-Earth system’s gravitational potential energy when the shell’s height is 425m will be:

= mgh

= 25 × 9.8 × 425

= 104125J

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