What should be the ending of the second element in a covalent compound?

-ide
-ium
the prefix
the subscript

Answer:

14metre squared

Explanation:

acceleration=force/mass

Answer:

Isothermal Expansion

Explanation:

This shows the expansion of gas at constant temperature against weight of an object's mass (m) on the piston. Temperature is held constant, therefore the change in energy is zero (U=0). So, the heat absorbed by the gas equals the work done by the ideal gas on its surroundings

Answer:

Could you give information about the lab

Explanation:

Answer:

The spectrum of each astronomical object

Explanation:

I took the test and got it right

Answer:c 40kg

Explanation:

Answer:

B. 30 kg * m/s

Explanation:

college board answer

Answer:

The red side of the magnetic needle always points to the North (we can assume that a ray is being created in this direction), and the front point of the compass (where the 12 would be in a clock) represents the direction in which you are walking (another ray comes in this direction).

Both rays are creating an angle, where the vertex is the center of the compass.

Then the angle in the image represents the angle that is being formed between your actual path and the North.

Or in other words, the angle represents that you are moving at θ from North.

(where θ is positive because is measured counterclockwise)

A 1Msun star in a closed binary system with a 2Msun star.

Systems in which the two stars are close to each other are called close binary star system.

The most massive stars have the shortest lifespans. The reason is that they have most fuel, they burn it so enormously that their lifetimes are very short. As a 1Msun star in a closed binary system with a 2Msun star becomes the massive star so it has the shortest life expectancy.

a. No, an isolated 1Msun star has not the shortest life expectancy.

b. No, a 1Msun star in a closed binary system with a 0.8Msun star has not the shortest life expectancy.

c. Yes, A 1Msun star in a closed binary system with a 2Msun star has the shortest life expectancy.

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On the moon, In a vacuum chamber and anywhere that is not very windy a bowling ball and a napkin fall with the same acceleration.

The correct answer is option B, C, D.

The acceleration of an object in free fall is determined by the gravitational force acting on it. In the absence of other forces, all objects, regardless of their mass, will experience the same acceleration due to gravity. Therefore, both a bowling ball and a napkin would fall with the same acceleration in the following scenarios:

B. On the moon: The moon has a weaker gravitational field compared to Earth. Its acceleration due to gravity is approximately 1/6th of Earth's gravity, but the same for all objects. Hence, both the bowling ball and the napkin would fall with the same acceleration on the moon.

C. In a vacuum chamber: A vacuum chamber eliminates the presence of air, which means there is no air resistance acting on the falling objects. Without air resistance, all objects will experience the same acceleration due to gravity. Therefore, both the bowling ball and the napkin would fall with the same acceleration in a vacuum chamber.

D. Anywhere that is not very windy: Wind or air resistance can affect the motion of objects during free fall. However, if the wind is not very strong, the effect of air resistance becomes negligible. In this case, both the bowling ball and the napkin would experience the same acceleration due to gravity and fall with the same rate.

A. Dropped off of the Leaning Tower of Pisa: This scenario does not guarantee that the bowling ball and napkin will fall with the same acceleration. The presence of air resistance can cause the napkin to experience a greater deceleration compared to the bowling ball due to its larger surface area. However, in the absence of significant air currents, the difference in acceleration may not be noticeable.

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Answer:

690.8895705521 × 10^8 is the perfect answer of your question.

The mass of polar bear that can sit on the floe without sinking is given by:Mass of polar bear = Mass of displaced water= Volume of water displaced × Density of water= Volume × (Density of water - Density of ice)= 4 × (1025 - 900)= 4 × 125= 500 kg,Therefore, the maximum mass of a polar bear that can sit on the ice floe before sinking is 500 kg.

The maximum mass of a polar bear that can sit on the floe before sinking can be calculated by using the given information. The density of ice is 900 kg/m³ and the density of seawater is 1025 kg/m³. The question can be solved as follows:Calculation of volume: Volume

= Surface area × Thickness Volume

= 40 × 0.1

= 4 m³

Calculation of mass of ice: Density of ice

= 900 kg/m³Mass of ice

= Density × Volume

= 900 × 4

= 3600 kg Calculation of mass of polar bear: The mass of polar bear that can sit on the floe without sinking is given by:Mass of polar bear

= Mass of displaced water

= Volume of water displaced × Density of water

= Volume × (Density of water - Density of ice)

= 4 × (1025 - 900)

= 4 × 125= 500 kg,

Therefore, the maximum mass of a polar bear that can sit on the ice floe before sinking is 500 kg.

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The power required to do 180 J of work in 2.4 s is 75 W.

Power can be defined as the rate at which work is done.

To calculate the power, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the power required to do 180 J of work in 2.4 s is 75 W.

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The equation to obtain the vertical distance cobered by the object is,

The acceleration due to gravity on saturn is 0.066 m/s2.

Plug in the known values,

Thus, the time taken by object to fall is 17.4 s.

Answer:

Explanation:

Wavelength = Velocity / Frequency

= 1782/30.2

= 59 metre.

Answer:

V₂ = 23.18 L

Explanation:

Given that,

Initial volume of a balloon, V₁ = 8.5 L

Initial pressure, P₁ = 150 kPa

We need to find new volume when the pressure drops to 55 kPa.

It is based on the concept of Boyle's law. The mathematical form of the Boyle's law is given by :

\(P_1V_1=P_2V_2\\\\V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{150\times 8.5}{55}\\\\=23.18\ L\)

So, the new volume is 23.18 L.

The inside plate temperature is approximately 235.7°C.

The net heat transfer from the plate surface to the surrounding air can be calculated using the equation:

\(Q_n_e_t\) = \(Q_r_a_d_i_a_t_i_o_n\) - \(Q_c_o_n_v_e_c_t_i_o_n\)

where \(Q_r_a_d_i_a_t_i_o_n\) = σ(ε)(A)(T⁴) is the heat lost from the plate surface by radiation, \(Q_c_o_n_v_e_c_t_i_o_n\) = h(A)(\(T_p_l_a_t_e\) - \(T_a_i_r\)) is the heat transferred from the plate surface to the air by convection, σ is the Stefan-Boltzmann constant, ε is the emissivity of the plate, A is the surface area of the plate, T is the temperature of the plate in Kelvin, \(T_a_i_r\) is the temperature of the air, \(T_p_l_a_t_e\) is the inside plate temperature, and h is the convective heat transfer coefficient.

By rearranging the equation and solving for \(T_p_l_a_t_e\), we get:

\(T_p_l_a_t_e\) = [(\(Q_r_a_d_i_a_t_i_o_n\) - h(A)(\(T_p_l_a_t_e\) - \(T_a_i_r\)))/σ(ε)(A)\(]^(^1^/^4^)\)

Substituting the given values, we get:

\(T_p_l_a_t_e\) = [(300 - 25(0.5*0.75)(\(T_p_l_a_t_e\) - 20))/ (5.67 x \(10^-^8\) x 0.4 x 0.375)\(]^(^1^/^4^)\)

Solving for \(T_p_l_a_t_e\), we get:

\(T_p_l_a_t_e\) = 508.85 K = 235.7°C

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62.53 ohms

Explanation

Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit.

then

Step 1

a)let

now, replace in the formula

therefore, the answer is

62.53 ohms

I hope this helps you

Answer:

C

Explanation:

The gravitational force of the Sun increased

If  the mass of the Sun increased during the formation of the solar system, the gravitational force of the Sun increased.

A massive concentration of interstellar gas and dust formed a molecular cloud that would become the sun's birthplace before the solar system existed. Cold temperatures caused the gas to clump together, increasing its density steadily.

Gravity continued to collapse the material onto the developing solar system, resulting in the formation of a star and a disc of material from which the planets would form. According to NASA, the newborn sun eventually accounted for more than 99% of the mass of the solar system (opens in new tab).

When the pressure inside the star became so high that fusion occurred, converting hydrogen to helium, the star began to blast a stellar wind, which helped clear out debris and prevented it from falling inward.

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Answer:it is c i just did it and got it right. :3

Explanation:

Answer:

A. from a low-temperature areas to high-temperature areas

Explanation:

it goes from low-temperature to high-temperature because it's reacting

1) Particle D has the least mass.

2) The particles could be either positively or negatively charged as the direction of the magnetic field is not given.

The initial direction of deflection for the charged particle entering the magnetic field depends on the direction of the magnetic field and the orientation of the particle's velocity vector with respect to the field.

If the magnetic field is directed into the page and the particle's velocity vector is directed upwards, the initial deflection will be to the left. Conversely, if the particle's velocity vector is directed downwards, the initial deflection will be to the right.

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Answer:

force that skater exerts on the ground

Explanation:

The only true statement about the toy car is " the toy does not approach the spring".

option A is the correct answer.

The acceleration of the car is calculated by applying Newton's second law of motion, which states that the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F - Ff = 0

F = Ff

ma = μmg

a = μg

where;

a = 0.14 x 9.8 m/s².

a = 1.37 m/s²

The distance traveled by the car before stopping is calculated as follows;

v² = u² - 2as

where;

when the car stop's the final velocity, v = 0

0 = u² - 2as

2as = u²

s = u²/2a

s = ( 2² ) / ( 2 x 1.37 )

s = 1.5 m

Thus, the final distance travelled by the car is less than 3 m, hence the car did not come in contact with spring.

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Answer:

-12.38 N

Explanation:

This question requires you to first find the acceleration then apply Newton's 2nd law of motion to find the force.

To find deceleration use the formula;

v²= u²+2ad ---where

v= final speed = 0 m/s

u= initial speed = 3.0 m/s

a= acceleration { in this case , deceleration} = ?

d= distance from the point where its passenger rolled off= 4.0 m

therefore ;

\(a=\frac{v^2-u^2}{2d}\)

\(a=\frac{0^2-3^2}{2*4} =\frac{-9}{8} m/s^2\)

Mass of the sled is calculated from its weight force.

Weight force = mg

mass of sled = weight force / g  where g= 10 m/s²

mass of sled = 110/10 = 11kg

The magnitude of horizontal net force will be : F= ma  where ;

m= mass of sled = 11 kg

a= deceleration = -9/8 m/s²

F = 11 * -9/8 = -12.38 N

Force is acting on the opposite direction of the initial motion of the sled.

The magnitude of the horizontal net force acting on the sled is 12.375 N.

Given data:

The initial speed of sled is, u = 3.0 m/s.

The final speed of sled is, v = 0 m/s.

The distance covered before stopping is, s = 4.0 m.

The weight of sled is, W = 110 N.

Using the Newton's second law, the net horizontal force acting on the sled is given as,

F = ma

here,

m is the mass of sled.

a is the acceleration of sled.

Mass is calculated from the weight as,

W = mg

110 = m (10)

m = 11 kg.

Now, using the second kinematic equation of motion to obtain the acceleration of sled as,

\(v^{2}=u^{2}+2(-a)s\\\\0^{2}=3^{2}+2(-a)4\\\\8a=9\\\\a=1.125 \;\rm m/s^{2}\)

Then the magnitude of net horizontal force is,

\(F = ma\\\\F = 11 \times 1.125\\\\F = 12.375\;\rm N\)

Thus, we can conclude that the magnitude of the horizontal net force is 12.375 N.

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Answer:

Here you go! Hope it Helps

Explanation:

mixer, nuts, bolts, washers

and

rusted nails

Answer:

The Correct answer is rusted nails and pastries

Explanation:

I know because I had this as one of my questions and I did rusted nails and pastries and got it correct.

Hope this helps! :)

The energy required to move the satellite into a circular orbit with an altitude of 199 km is 3.45 x 10^8 J.

The energy required to move the satellite into a circular orbit with an altitude of 199 km can be calculated by using the following equation:

ΔE = GMm[(2/r1) - (1/r2)]

Where ΔE is the change in energy, G is the gravitational constant, M is the mass of the Earth, m is the mass of the satellite, r1 is the initial distance of the satellite from the center of the Earth, and r2 is the final distance of the satellite from the center of the Earth.

First, we need to convert the altitude into the distance from the center of the Earth:

r1 = 6,711 km + 110 km = 6,821 km

r2 = 6,711 km + 199 km = 6,910 km

Plugging in the values, we get:

ΔE = (6.67 x 10^-11 Nm^2/kg^2) x (5.97 x 10^24 kg) x (977 kg) x [(2/6,821,000 m) - (1/6,910,000 m)]

ΔE = 3.45 x 10^8 J

Therefore, the energy required to move the satellite into a circular orbit with an altitude of 199 km is 3.45 x 10^8 J.

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Answer:

liquid?

Explanation:

liquid: A substance that flows and keeps no definite shape because its molecules are loosely packed and constantly moving. It takes the shape of its container but maintains constant volume.

A worker in a factory has discovered a material that is very confusing. it can be stored in a container but it can also flow from one container to another. it forms powder after some time, the substance on the container can be classified as a fluid state which can either be liquid or gas.

Anything which has mass and occupies space is known as matter, basically there are four states of matter solid liquid gas, and plasma. These distinct states of matter have different features according to which they vary their volume and shape.

A factory worker has discovered a material that is quite puzzling, as stated in the challenge. it can flow from one container to another or be stored in a container. After some time, it turns into powder.

Thus, the substance in the container might be either liquid or gas.

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Answer:

c 0.10

Explanation:

V=IR

12.0V=I x 120.12ohms

I=0.099

I= 0.10

The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

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In order to design a spring-launched roller coaster that will carry two passengers per car,  a spring constant of approximately 4255.78 N/m is needed for the roller coaster to be safe.

Several factors must be taken into consideration. The car must go up a 10-m-high hill and then descend 15 m to the track's lowest point. The maximum amount the spring can be compressed is 2.2 m, and a loaded car will have a maximum mass of 440 kg. Additionally, for safety reasons, the spring constant should be 11% larger than the minimum needed for the car to just make it over the top.

To determine the spring constant needed for the roller coaster, we can use the following formula:

U = (1/2)kx²where U is the potential energy of the spring, k is the spring constant, and x is the distance the spring is compressed. To find the minimum spring constant needed for the car to just make it over the top of the hill, we can set the potential energy of the spring equal to the potential energy of the car at the top of the hill:

U = mgh, where m is the mass of the car, g is the acceleration due to gravity, and h is the height of the hill.

U = (1/2)kx²mgh

= (1/2)kx²k = 2mgh/x²

Plugging in the given values, we get: k = 2(440 kg)(9.81 m/s²)(10 m)/(2.2 m)²k ≈ 3831.64 N/m. To find the spring constant needed for safety reasons, we can multiply the minimum spring constant by 1.11:k' = 1.11k' ≈ 4255.78 N/m

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Answer:

d

Explanation:

theres reason boats dont go in shallow water..

All waves move objects from one location to another. The correct option is D.

A wave is a disturbance or variation that moves energy from point to point in a medium and can take the form of an elastic deformation, a variation in pressure, electrical or magnetic intensity, electrical potential, or temperature, or one complete cycle of such a disturbance.

A wave is a disturbance in a medium that carries energy without causing net particle movement.

It could be elastic deformation, a change in pressure, electric or magnetic intensity, electric potential, or temperature. Every wave transports objects from one location to another.

Wind is the most common cause of waves. Wind-driven waves, or surface waves, are created by the friction between wind and surface water.

Thus, the correct option is D.

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