What does an alpha particle consist of? one proton and two neutrons two protons and two neutrons two protons and one electron one proton and two electrons

The change in entropy δs1 of the lava is not given in the question.

Entropy is a measure of the amount of energy in a system that is unavailable to do work. The change in entropy of a system is related to the amount of heat added or removed from the system and the temperature at which the heat transfer occurs.

In the case of the lava cooling to 700.0°C before solidifying, we would need to know the amount of heat lost by the lava and the temperature at which this heat transfer occurred in order to calculate the change in entropy. Without this information, we cannot determine the value of δs1.

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Answer:

B is the best option but A is also good it's up to you but I'm leaning more towards B

Answer:

momentum after=momentum before

momentum before=Mbullet*Vbullet

Momentum after=(.49+.01)10=Mb*Vb

solve for V bullet

1.24% percentage of parts will not meet the weight specs amd the sample means will fall between 25.046 and 25.354 ounces.

a. To determine the percentage of parts that will not meet the weight specifications, we need to calculate the probability of a part weighing less than 24.7 ounces or more than 25.7 ounces. First, we need to calculate the z-scores for these values using the formula:

z = (x - μ) / σ

where x is the value, μ is the mean, and σ is the standard deviation. For 24.7 ounces:

z1 = (24.7 - 25.2) / 0.20 = -2.50

For 25.7 ounces:

z2 = (25.7 - 25.2) / 0.20 = 2.50

Using Table-A (Z-score table), we can find the area under the standard normal curve corresponding to these z-values. From the table, the area to the left of -2.50 is 0.0062, and the area to the right of 2.50 is also 0.0062. Therefore, the total probability of a part not meeting the weight specs is:

P(z < -2.50 or z > 2.50) = P(z < -2.50) + P(z > 2.50) = 0.0062 + 0.0062 = 0.0124

So, the percentage of parts that will not meet the weight specs is .

b. To determine the values within which 99.74% of the sample means will fall, we need to calculate the margin of error for a sample mean. The margin of error is given by the formula:

E = z * (σ / sqrt(n))

where E is the margin of error, z is the z-score corresponding to the desired level of confidence (in this case, 99.74% corresponds to a z-score of 2.75), σ is the standard deviation, and n is the sample size.

Plugging in the values:

E = 2.75 * (0.20 / sqrt(10)) ≈ 0.154

The range of sample means will be within ±E of the population mean. Therefore, the values within which 99.74% of the sample means will fall are:

25.2 ± 0.154 = (25.046, 25.354)

So, for samples of size 10, 99.74% of the sample means will fall between 25.046 and 25.354 ounces.

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Answer:

1: Because matter has many different forms.

2: The materials that are shown can be organized into 3 different forms; solid, liquid, and gas.

3: The image of the liquids is most likely a material that cannot be found in nature. Liquids have many useful properties, but it depends on the liquid. Bleach is a liquid that has is very useful for sterilizing. Water is useful because without it, life on earth would not exist. And there are many more liquids, but I am going to cut it short here because there too many to put down.

Explanation:

Pls mark Brainliest with the crown.

Answer:

D. It decreases

Explanation:

A pictorial diagram of a person hopping sideways at 5 different positions. The start and end positions are on the ground. The correct option is D.

Projectile motion is the motion of an artifact thrown or projected into the air that is only affected by gravity's acceleration. The object is known as a projectile, and its path is known as its trajectory.

Any object that is cast, fired, flung, heaved, hurled, pitched, tossed, or thrown is considered a projectile.

Throwing a ball straight up, kicking a ball at an angle to the horizontal, or simply dropping things and letting them fall are all examples of projectile motion.

The pictorial diagram of a person hopping sideways in five different positions best illustrates projectile motion. The starting and ending points are on the ground.

Thus, the correct option is D.

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Your question seems incomplete, the missing options are:

A moon has more mass than the planet it circles and less mass than a star.

Do planets have a greater mass than stars?

By this definition, "stars" must be larger than planets in terms of mass. The size of a white dwarf would be comparable to that of a moon or small planet, but its mass would be approximately 200–1300 times that of Jupiter. Even more extreme are neutron stars, which are about the size of an asteroid but have a mass of several thousand Jupiters.

Why is the weight of the same object different on different planets Class 7?

The weight of an object is determined by its mass and the gravitational force that it experiences. The separation between two objects affects how strong gravity is. Because of this, an object weights differently on many planets.

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The mass of helium in the Goodyear blimp is approximately 0.8088 kg.

To calculate the mass of helium in the Goodyear blimp, we can use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas.

The ideal gas law can be written as:

PV = nRT

where P is the absolute pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the universal gas constant, and T is the temperature of the gas in Kelvin.

Rearranging the equation to solve for n, we get:

n = PV / RT

Substituting the given values, we get:

n = (1.05 x 10^5 Pa) x (4700 m^3) / [(8.31 J/mol·K) x (273 K)]

Simplifying, we get:

n = 202.2 mol

The mass of helium can be calculated using the molar mass of helium, which is approximately 4 grams per mole.

Therefore, the mass of helium in the blimp is:

mass = n x molar massmass = (202.2 mol) x (4 g/mol)mass = 808.8 g or 0.8088 kg

The mass of helium in the Goodyear blimp is approximately 0.8088 kg.

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The distance in mm between these minima is 0.29 ×\(10^{-3}\) m

For first minima, m=1, Then,

\(a\sin \theta_1 = \lambda_1 \Rightarrow \sin\theta_1 = \frac{\lambda_1}{a} \Rightarrow \theta_1 = \sin^{-1}\left(\frac{589.1\times10^{-9}}{2.4\times 10^{-6}}\right) = 14.2^{\circ}\)

\(a\sin \theta_2 = \lambda_2 \Rightarrow \sin\theta_2 = \frac{\lambda_2}{a} \Rightarrow \theta_2 = \sin^{-1}\left(\frac{589.6\times10^{-9}}{2.4\times 10^{-6}}\right) = 14.22^{\circ}\)

Hence the required angle is , (14.22 - 14.2) = 0.02o

The distance between these two minima,

\(\Delta y = y_2 -y_1 = \frac{D}{a}\left( \lambda_2-\lambda_1\right) = \frac{1.4}{2.4\times 10^{-6}}\left(0.5\times 10^{-9} \right ) = 0.29\times 10^{-3} \hspace{2mm} m\)

This distance is best measured using a microscope.

The length of a particular path taken by an object between two points is its distance, such as the distance traveled through a maze. In some cases, such as when a ball is thrown straight up or the Earth completes an orbit, this can even be a closed distance along a closed curve that begins and ends at the same location. The mathematical term for this is the curve's arc length. It is also possible to signify the distance traveled: a "ahead" distance is positive and a "backward" distance is negative.

When building vehicles or mechanical gears, it can be helpful to take circular distance—the distance covered by a

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Answer:

d

Explanation:

The units of the momentum of the t-shirt are the units of the integral \(inegral^{t} = tL_{t} = 0\) F(t) dt, where F(t) has units of N and t has units of S are kg × m/s² (Option D).

The units of momentum can be determined by analyzing the units of the integral in the equation provided. The integral has units of N × s (Newton-seconds) since F(t) has units of N (Newtons) and t has units of s (seconds).

Recall that 1 N is equivalent to 1 kg × m/s² (kilogram-meter per second squared). Therefore, we can rewrite the units of the integral as kg × m/s multiplied by s, resulting in kg × m/s.

Therefore, the unit of the momentum is kg × m/s².

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Given:

Thermal energy is denoted by W

Chemical energy is denoted by X

Electrical energy is denoted by Y

Kinetic energy is denoted by Z

To find the order of energy while converting bagasse to electricity.

Explanation:

The bagasse has chemical energy stored in it.

The bagasse is burned, so chemical energy gets converted into thermal energy.

The thermal energy gets converted into kinetic energy.

The kinetic results in the motion of electrons.

Thus, producing electrical energy.

Hence, the conversion order is XWZY

Answer:

no

Explanation:

because of the potential difference

Answer: Heyo Kenji Here! Here's your answer- A planet is most likely to have tectonic activity.

Explanation: Hope this helps!

Have a nice day!

- Kenji ^^

Explanation:

because the acceleration is negative, this indicates a deceleration (or slowing down) . Hence we can say that:

The car is decelerating (slowing down), i.e its velocity is decreasing, at a constant rate of 5m/s².

Answer:

B

Explanation:

kinetic energy (KE) is the energy possessed by moving bodies. It can be expressed as:

KE = \(\frac{1}{2}\)m\(v^{2}\)

Where: m is the mass of the object, and v its speed.

For example, a stone of mass 2kg was thrown and moves with a speed of 3 m/s. Determine the kinetic energy of the stone.

Thus,

KE =  \(\frac{1}{2}\) x 2 x \(3^{2}\)

     = 9

KE = 9.0 Joules

Assume that the speed of the stone was 4 m/s, then its KE would be:

KE =  \(\frac{1}{2}\) x 2 x \(4^{2}\)

     = 16

KE = 16.0 Joules

Therefore, it can be observed that as speed increases, the kinetic energy increases. Thus option B is appropriate.

Explanation:

In a parallel circuit, each lamp is connected to the power source independently, meaning that the lamps are not directly connected to each other. Therefore, if one lamp filament breaks in this setup, the other three lamps will continue to work unaffected.

When the filament of one lamp breaks, it essentially opens the circuit for that particular lamp. However, the remaining lamps are still connected in parallel, so the current can flow through them independently. The other lamps will continue to receive electricity from the power source and light up normally.

This behavior is a characteristic of parallel circuits, where each component has its own individual connection to the power source. If the lamps were connected in series, the situation would be different. In a series circuit, a break in one lamp's filament would interrupt the flow of current throughout the entire circuit, and all the lamps would go out.

Answer: \(1.456\) × \(10^{10}\)

In this question, you need to determine the torque.

The formula for torque is

torque = weight * length of the lever arm in meters

Since we are given the mass of each child, we need to solve for their weights, which is found by multiplying their masses by the pull of gravity, which is 9.8 m/sec/sec.  

This gives the weight of the 20 kg child to be 196 Newtons, and the weight of the 30-kg child to be 294 Newtons.  

If the length between the 2 children is 0.5 meters, then let's say that the distance away that the heavier child is from the fulcrum is r.  

That makes the distance that the lighter child is away from the fulcrum as 0.5 - r.  

Now the sum of the torques must equal 0 if the seesaw is to remain balanced.  

Because one torque is positive and one is negative, we can move the negative one over to the other side of the equals sign making them equal to each other, which is what rotational equilibrium is all about.  

Here's our formula thus far:

196(0.5 - r) = 294r and

686 - 196r = 294r and

686 = 490r so

r = 1.4

Therefore, with the help of torque, we get, the heavier child is at the distance of 1.4 m and the lighter child is 3.5 - 1.4 = 2.1 m away.

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The racing car takes 1 second to accomplish this acceleration.

The time it takes for the racing car to increase its speed from 10 m/s to 30 m/s can be calculated using the equation of motion for uniformly accelerated linear motion.
First, we need to find the acceleration of the car.

We can use the formula:
a = (v_f - v_i) / t,
where a is the acceleration, v_f is the final velocity (30 m/s), v_i is the initial velocity (10 m/s), and t is the time taken.
Rearranging the equation, we have:
t = (v_f - v_i) / a.
Next, we need to find the acceleration of the car.

To do this, we can use the formula:
a = (v_f^2 - v_i^2) / (2 * d),
where d is the distance traveled (60 m), v_f is the final velocity (30 m/s), and v_i is the initial velocity (10 m/s).
Plugging in the values, we have:
a = (30^2 - 10^2) / (2 * 60) = 20 m/s^2.
Now we can substitute the value of acceleration into the equation for time:
t = (30 - 10) / 20 = 1 s.
Therefore, it takes 1 second for the racing car to increase its speed from 10 m/s to 30 m/s over a distance of 60 m.

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The kinetic energy of the ball with a mass of 3kg and a velocity of 10m/s is rolling is 37.5J

Given the mass of ball (m1) = 6kg

The velocity of ball (v1) = 10m/s

The kinetic energy of ball (KE) = 300J

We know that kinetic energy (KE) = 1/2mv^2

Since the ball rolls its kinetic energy = ρmv^2 where ρ is energy constant.

So, 300 = ρ x 6 x 10 x 10

ρ = 0.5

the mass of other ball (m2) = 3kg

The velocity of second ball (v2) = 5m/s

The the kinetic energy created by second ball is = KE2

Such that KE2 = ρm2v2^2

KE2 = 0.5 x 3 x 5 x 5 = 37.5J

Hence the required kinetic energy  is 37.5J

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complete question: Kinetic energy varies jointly with the mass (m) of an object and the square of it's velocity (v). A ball with a mass of 6kg rolls with a velocity of 10m/s and creates 300J of kinetic energy. How much kinetic energy would a ball with a mass of 3kg and a velocity of 5m/s create? (First find the constant of variation)

If \(\vec A\) and \(\vec B\) are perpendicular, then their dot product is zero. This means

\(\vec A \cdot \vec B = (\vec\imath + 5\,\vec\jmath + n\,\vec k) \cdot (2\,\vec\imath - \vec\jmath + \vec k) = 2 - 5 + n = 0\)

Solving for n is trivial; it follows that n = 3.

Answer:

DeeExplanation:

Answer:

water cannot be used as barometric liquid because it's density is lower than Mercury . water's density is 1000 gram per cubic meter. hence it requires a barometer whose height is around 11 meter

Answer:

the above answer is correct hope it's help you have a great day ☺ ☺ keep smiling be happy stay safe

Answer:

4.2 m/s2

Explanation:

By using Newton's second law, the cart's acceleration is 4.2 m/\(s^{2}\)

Given that a spring scale is used to exert a net force of 2.7 N on a cart.

If the cart's mass is 0.64 kg, then, we can use Newton's second law to solve the question.

F = ma

Force F = 2.7 N

Mass m = 0.64 kg

Acceleration a = ?

Substitute all the parameters into the formula

2.7 = 0.64a

a = 2.7/0.64

a = 4.2 m/\(s^{2}\)

Therefore, the cart's acceleration is 4.2 m/\(s^{2}\)

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A crane is lifting a 2000 kg marble slab in a quarry using a 15 m long boom that weighs 900 kg. The cable supporting the boom is attached 10.0 m from the pivot end and has a tension of 82184 N.

To find the tension in the cable supporting the boom, we can use the principle of torque equilibrium. This principle states that the sum of the torques acting on an object must be zero for the object to be in rotational equilibrium.

Here's a plan to solve the problem:

Hypothesis: The tension in the cable supporting the boom can be found using the principle of torque equilibrium.

Equipment/Techniques: We will need a calculator and knowledge of the formula for torque (torque = force x distance x sin(angle)).

Health and safety: This problem does not present any significant health and safety risks.

Data collection and analysis:

Quantities to be measured: We need to find the tension in the cable supporting the boom.

Number and range of measurements to be taken: We only need to calculate the tension in the cable once.

Equipment usage: We will use the formula for torque to calculate the tension in the cable.

Control variables: None.

Method for data collection and analysis:

Calculate the weight of the slab of marble:

\(W = mg = 2000\; kg \times 9.8 \;m/s^2 = 19600 N.\)

Calculate the weight of the boom:

\(W = mg = 900 \;kg \times 9.8 \;m/s^2 = 8820 N.\)

Calculate the torque due to the weight of the slab:

\(T1 = W1 \times d1 \times sin(\theta) = 19600 N \times 10 m \times sin(90) = 196000 Nm.\)

Calculate the torque due to the weight of the boom:

\(T2 = W2 \times d2 \times sin(\theta) = 8820 N \times 5 m \times sin(60) = 24162 Nm.\)

Calculate the torque due to the tension in the cable:

\(T3 = T \times d3 \times sin(\theta) = T \times 5 m \times sin(60) = 2.5T Nm.\)

Apply the principle of torque equilibrium: T1 + T2 - T3 = 0.

Solving for T, we get T = (T1 + T2)/2.5 = (196000 Nm + 24162 Nm)/2.5 = 82184 N.

In conclusion, The tension in the cable supporting the boom is 82184 N.

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In its orbit, Earth is passing Saturn, with both planets on the same side of the Sun.

What is apparent retrograde motion?

When a planet appears to be moving backward relative to other bodies in its solar system when viewed from a certain angle, this is known as apparent retrograde motion. Motion in the same direction as other bodies is referred to as direct motion or prograde motion.

Mars typically looks to be traveling to the left of the stars. Mars, however, moves right in relation to the stars during "retrograde motion" periods. Truth be told, that is only an illusion that lasts for around two years. In reality, Earth is orbiting the Sun and is currently passing past Mars. Mars is only occulted by Earth once every 26 months since it orbits the Sun more closely and moves quicker than Mars. Mars typically moves from west to east in the sky, but when Earth passes in front of it, we see it move from east to west, creating the impression that it is going backward.

Hence, the earth is passing Saturn in its orbit, with both planets on the same side of the Sun.

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