what is the sl unit for weight?

We must use the mechanical advantage formula to determine the length of the ramp:

Output force minus Input force equals Mechanical Advantage (MA). In this instance, the input force is the force required to hoist the object in the absence of the ramp, and the output force is the weight of the object being raised up the ramp

By dividing the length of the slope by its height, you may calculate the optimal mechanical advantage of an inclined plane. The ideal mechanical advantage of a ramp, for instance, is 3 metres 1 metre, or 3 metres, if you are loading a truck that is 1 metre high utilising it.

Basic Machines' Mechanical Advantage and Efficiency Calculated. The IMA is typically calculated as the resistance force (Fr) divided by the effort force (Fe). IMA is also equal to the product of the load's travel distance (d) and the distance over which the effort is applied (de).

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Answer:

C, 1800kg/s

Explanation:

You multiply the mass (300) by the change in the two velocities (6-0=0). Then you’ll get 1800.. sorry if I’m wrong

Answer: Hydrogen is a chemical element with atomic number 1 which means there are 1 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.

Explanation: hope this helps

The spring constant for a spring is stretched 0.15 m and the force was 1500 N is 10000.

The spring constant, k, is a measure of the spring's stiffness. It varies depending on the spring and material. The greater the spring constant, the stiffer the spring and more difficult to stretch.

The letter k symbolizes the "spring constant," which is a number that tells us how "stiff" a spring is.

If k is large, it means that more force is required to stretch it a certain length than would be required to stretch a less stiff spring the same length.

We know that,

F = k(x)

Where k is the spring constant.

Here, it is given that:

F = 1500N

x = 0.15m

So,

1500 = k (0.15)

k (0.15) = 1500

k = 1500/0.15

k = 150000/15

k = 10000

Thus, the value of spring constant is 10000.

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Answer:

Option C or the third option.

Explanation: Water is a renewable resource there is so much of it and it just keeps circulating through the system it doesn't run out.

Answer:

c

Explanation:

Metallic hydrogen is not a phase of (B) hydrogen that occurs when it acts like a metal

This unique state of hydrogen is not commonly found in nature, as it requires extremely high temperatures and pressures to form. This leads us to eliminate options a and d.

Under such conditions, the electrons in hydrogen atoms become free, allowing them to conduct electricity similar to how metals do. This is why metallic hydrogen is referred to as a "metal" even though it is not a traditional metal like iron or copper.

Metallic hydrogen is theorized to be present in the cores of giant planets, specifically gas giants such as Jupiter and Saturn. This is because these planets have the necessary high temperatures and pressures to maintain this state of hydrogen, making option c true. The presence of metallic hydrogen in their cores is believed to contribute to the strong magnetic fields observed in these planets.

In summary, metallic hydrogen is a state where hydrogen acts like a metal (option b), which is formed under extreme conditions and is potentially found in the cores of gas giants (options c and d). The correct answer is b

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The position d of the 6-kn load such that the average normal stress in both rods supporting the beam is the same is 111.5 mm.

First we derive the formula for average normal stress.σaverage = Force/Area

σaverage = P/A .Take 1 as the cross-sectional area of rod ab and find the force it's bearing.Force on rod ab will be equal to the weight of the beam acting downwards + the weight of the 6-kn load acting downwards.

Force = 4×10^4 N + 6×10³ N

Force = 46×10³ N

Now substitute the values in the formula.σ average 1 = P/A

σ average 1 = (46×10²)/(12×10^-6)

σ average 1 = 3.83×10^9 Pa

Now take 2 as the cross-sectional area of rod cd and find the force it's bearing.Force on rod cd will be equal to the weight of the 6-kn load acting downwards.Force = 6×10³ N

Now substitute the values in the formula.σ average 2 = P/A

σ average 2 = (6×10³)/(8×10^-6)

σ average 2 = 0.75×10^9 Pa

σ average 1 = σ average 2 (As given in the question)3.83×10^9 = 0.75×10^9 + (6×10³/A)A = 14.26 mm.The position of the 6-kn load d = 140 mm - 28.5 mm = 111.5 mm.Hence, the position d of the 6-kn load such that the average normal stress in both rods is the same is 111.5 mm.

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Answer:

gamma decay

Explanation:

Answer:       gamma decay

Explanation:      I took the test

c it hink this because im geuss

Diane is not ranked because she did not record the change in frequency when increasing the tension in her low E string.

To rank the members based on the initial frequency of their low E string, we can compare the given beat frequencies. The larger the beat frequency, the larger the difference in frequency between the strings. Based on the given information, we can rank the members as follows:

Evita = 5 Hz

Buffy = 4 Hz

Aiko and Freja (tied) = 3 Hz

Chandra = 1 Hz

Note that Diane is not ranked because she did not record the change in frequency when increasing the tension in her low E string.

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Answer:

10g to kg=0.01

20×0.01=0.2

Force of 0.2N

Answer:

Its vertical speed increases, and its horizontal speed remains the same.

Explanation:

Given that,

A baseball player throws a ball horizontally,

We know that,

A baseball player throws a ball horizontally, then vertical component of gravity will be increases but there is no acceleration in horizontal direction

So, horizontal velocity remains same.

Hence, Its vertical speed increases, and its horizontal speed remains the same.

If a baseball player throws a ball horizontally, the statement which best  describes the ball's motion after it is thrown is: B. Its vertical speed increases, and its horizontal speed remains the same.

Speed can be defined as the distance covered by an object per unit time.

Generally, speed has magnitude but no direction and as such it is a scalar quantity.

Mathematically, speed is given by the formula;

\(Speed = \frac{distance}{time}\)

For the vertical component of speed:

The vertical speed of an object increases with respect to the distance covered by the object as a result of the effect of acceleration due to gravity.

For the horizontal component of speed:

The horizontal speed of an object remains the same with respect to the distance covered by the object because there isn't any gravitational force acting on it.

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The block has the greatest average power provided is bock m.

Mathematically instantaneous power is calculated as;

P = Fv

where;

Both blocks (m and 2m) will experience the same force but different velocity.

The smaller block (m) will experience greater velocity.

Thus, the block has the greatest average power provided is bock m.

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Bodily injury due to slips and falls is considered a physical hazard from conditions involving: surface residues.

In general, injuries can be caused by:

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Explanation:

Charges,\(q_1=8\ \mu C=8\times 10^{-6}\ C\)

\(q_2=-5\ \mu C=-5\times 10^{-6}\ C\)

The distance between charges, r = 10 cm = 0.1 m

We need to find the magnitude and direction of the electric force. It is given by :

\(F=\dfrac{kq_1q_2}{r^2}\\\\F=\dfrac{9\times 10^9\times 8\times 10^{-6}\times 5\times 10^{-6}}{(0.1)^2}\\\\F=36\ N\)

So, the required force between charges is 36 N and it is towards positive charge i.e. +8 μC.

Answer:

velocity of ball A after the collision is 1.8 m/s, 49.1° above the horizontal

Explanation:

This is a conservation of elastic momentum in 2 dimensions problem.

initial momentum must equal final momentum:  pi = pf

Break up the pf of B into its x and y components to solve.  Since the balls are identical, you can leave mass (m) out of the calculations:

x:   2 + 0 = 1.6(cos60) + Ax

Ax = 1.2     x component of velocity of ball A after the collision

y:  0 + 0 = -1.6(sin60) + Ay

Ay = 1.3856  y component of velocity of ball A after the collision

R-A = √(1.2² + 1.3856²) = 1.83 ≈ 1.8 m/s   resultant velocity of ball A after the collision  

∅ = tan⁻¹(¹1.3856/1.2) = 49.1⁰   angle ball A is going after the collision

Answer:

1 deg C = 5/9 deg F         (Ex. 212 F - 32) * 5/9 = 100

So deg F = 9/5 deg C = 9/5 * 2.9 = 5.2 deg F

Answer:

infinity

Explanation:

this is because time is irrelevant

The supply of energy and of each needed chemical element restricts a system operation -- for example , without inputs of energy ( sunlight ) and matter ( carbon dioxide and water ) , a plant cannot grow. Hence , it is very informative to track the transfers of matter and energy within , into , or out of any system under study.

Hope it helps

Scientists track the energy in a system for analyzing and comparison of  the efficiencies of the different systems, to know whether one system has some advantage over another

Thermal energy also referred to as heat energy, can be described as the type of energy in which heat is transmitted from one body to another body as a result of its molecular movements.

The accepted unit for calculating energy is the joule (J). The unit of measurement for electric energy known as the kilowatt-hour (kWh) should be mentioned among the most popular ones (in fact it is used to calculate electricity bills). The Terawatt/hour (TWh), or one billion kW/h, is used to determine a large power plant's production or a nation's consumption.

Thus, To analyze and compare the efficiencies of various systems and determine whether one system has an advantage over another, scientists monitor the energy in a system.

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Compare α to the critical angle to find the largest value without light refracting out at face AC.

To find the largest value for the angle α without any light refracted out of the prism at face AC when it is immersed in air, we can use Snell's law.

Snell's law states that the ratio of the sine of the angle of incidence (θ₁) to the sine of the angle of refraction (θ₂) is equal to the ratio of the refractive indices of the two mediums involved:

n₁sin(θ₁) = n₂sin(θ₂)

Since the prism is immersed in air, we can assume the refractive index of air (n₁) to be approximately 1.00.

For light to not refract out of the prism at face AC, it means that the angle of incidence at face AC should be equal to or greater than the critical angle (θc). The critical angle can be calculated using the formula:

θc = arcsin(n₂ / n₁)

Since the prism is immersed in air, n₂ would be the refractive index of the material the prism is made of.

Therefore, to find the largest value for α, we need to determine the critical angle for the material the prism is made of and set α equal to or greater than the critical angle.

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(a) To determine the total pressure in the flask, we need to consider the partial pressures of each gas present and add them together.

Using the ideal gas law, we can calculate the partial pressure of each gas:

PV = nRT

For Ne gas:

P₁V₁ = n₁RT

P₁ = (n₁/V₁)RT

For SF6 gas:

P₂V₂ = n₂RT

P₂ = (n₂/V₂)RT

To find the total pressure, we add the partial pressures:

P_total = P₁ + P₂

(b) The mole fraction (χ) of each gas can be calculated using the formula:

χ = moles of gas / total moles of gas

To find the moles of each gas, we use the ideal gas law rearranged:

n = PV / RT

Now, let's calculate the values.

Given:

Volume of Ne gas (V₁) = 435 mL = 0.435 L

Temperature of Ne gas (T₁) = 21 °C = 294 K

Pressure of Ne gas (P₁) = 1.09 atm

Volume of SF6 gas (V₂) = 456 mL = 0.456 L

Temperature of SF6 gas (T₂) = 25 °C = 298 K

Pressure of SF6 gas (P₂) = 0.89 atm

Volume of flask (V_total) = 325 mL = 0.325 L

Temperature of flask (T_total) = 30.2 °C = 303.2 K

Gas constant (R) = 0.0821 L·atm/(K·mol)

(a) To calculate the total pressure:

P₁ = (n₁/V₁)RT₁

P₁ = (PV₁/RT₁)

P₂ = (n₂/V₂)RT₂

P₂ = (PV₂/RT₂)

P_total = P₁ + P₂

(b) To calculate the mole fraction:

n₁ = P₁V_total / RT_total

n₂ = P₂V_total / RT_total

χ₁ = n₁ / (n₁ + n₂)

χ₂ = n₂ / (n₁ + n₂)

By plugging in the given values and performing the calculations, we can find the total pressure in the flask and the mole fraction of each gas.

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Answer:

The formula for kinetic energy is,  

where m is mass and v is velocity.  

It's kinetic energy is 64 Joules.

Explanation:

Answer:

OA. potential; kinetic

Explanation:

For the eutectoid composition steel initially equilibrated at 730°C, the transformation products and approximate percent after each step for the given cooling procedures are:

1. (a) Quench to 650°C and hold for 100 seconds =  steel will transform to pearlite 50% and 50% austenite.
   (b) Then cool to room temperature= the austenite will transform completely to pearlite.

2. (a) Quench to 650°C and hold for 2 seconds (2 = 100.3)= steel will transform to 99.7% pearlite and 0.3% austenite.
   (b) Then quench to room temperature= the remaining austenite will transform completely to 100%pearlite.

3. (a) Quench to 650°C and hold for 10 seconds=the steel will transform to 95% pearlite and 5% austenite.
   (b) Then quench to room temperature= the remaining austenite will transform completely to 100% pearlite.

4. (a) Quench to 400°C and hold for 3.16 seconds (3.16 = 100.5)= the steel will transform to 50% bainite and 50% austenite.
   (b) Then quench to room temperature=the retained austenite will transform to  100% martensite.

5. (a) Quench to 400°C and hold for 25 seconds (25 = 101.4)= the steel will transform to 91% bainite and 9% retained austenite.
   (b) Then quench to room temperature= the retained austenite will transform to  100% martensite.

6. (a) Quench to 400°C and hold for 200 seconds (200 = 102.3)=the steel will transform to  33% pearlite, 33% bainite, and 34% retained austenite.
   (b) Slow cool to room temperature= the retained austenite will transform to 67% pearlite and 33% martensite.

7. (a) Quench to 0°C in 10 seconds=the steel will transform to martensite.
   (b) Heat to 600°C and hold for 1000 seconds=the martensite will transform to 100% austenite.

1. (a) Quench to 650°C and hold for 100 seconds.

(b) Then cool to room temperature.

After step 1(a), the steel will transform to pearlite with approximately 50% pearlite and 50% austenite. After step 1(b), the austenite will transform completely to pearlite, resulting in 100% pearlite.

2. (a) Quench to 650°C and hold for 2 seconds (2 = 100.3).
   (b) Then quench to room temperature.

After step 2(a), the steel will transform to pearlite with approximately 99.7% pearlite and 0.3% austenite. After step 2(b), the remaining austenite will transform completely to pearlite, resulting in 100% pearlite.

3. (a) Quench to 650°C and hold for 10 seconds.
   (b) Then quench to room temperature.

After step 3(a), the steel will transform to pearlite with approximately 95% pearlite and 5% austenite. After step 3(b), the remaining austenite will transform completely to pearlite, resulting in 100% pearlite.

4. (a) Quench to 400°C and hold for 3.16 seconds (3.16 = 100.5).
   (b) Then quench to room temperature.

After step 4(a), the steel will transform to bainite with approximately 50% bainite and 50% retained austenite. After step 4(b), the retained austenite will transform to martensite, resulting in approximately 100% martensite.

5. (a) Quench to 400°C and hold for 25 seconds (25 = 101.4).
   (b) Then quench to room temperature.

After step 5(a), the steel will transform to bainite with approximately 91% bainite and 9% retained austenite. After step 5(b), the retained austenite will transform to martensite, resulting in approximately 100% martensite.

6. (a) Quench to 400°C and hold for 200 seconds (200 = 102.3).
   (b) Slow cool to room temperature.

After step 6(a), the steel will transform to pearlite with approximately 33% pearlite, 33% bainite, and 34% retained austenite. During step 6(b), the retained austenite will transform to martensite, resulting in approximately 67% pearlite and 33% martensite.

7. (a) Quench to 0°C in 10 seconds.
   (b) Heat to 600°C and hold for 1000 seconds.

After step 7(a), the steel will transform to martensite. After step 7(b), the martensite will transform to austenite, resulting in 100% austenite.

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Answer:

we add salt to conduct electricity

Answer:

gsg

Explanation:

The balloons with negative charges moves apart from each other by electrostatic force of repulsion. The potential energy in them increases as they move away.

The basic principle of charges is that, two like charges repel and unlike charge attracts. That is: two negative charged bodies or two positively charged bodies will repel each other and one negative charged body attracts a positively charged body.

In both cases attraction or repulsion the charged particles exerts a force with each other called the electrostatic force. The electrostatic force between two charges is directly proportional to the magnitude of charges and inversely proportional to the distance between them.

The balloons with negative charges moves apart from each other by electrostatic force of repulsion. The potential energy in them increases as they move away.

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A football player kicks a football off a tee with a speed of 21 m/s at an angle of 51°, then the horizontal component of the velocity would be 15.58 m/s and the vertical component of the velocity would be 14.07 m/s.

It can be defined as the motion of any object or body when thrown from the earth's surface and follows any curved path under the effect of the gravitational force of the earth.

The horizontal component of the velocity = 21 × cos51 = 15.58 m/s

The vertical component of the velocity = 21 × sin51 = 14.07 m/s

Thus, the horizontal component of the velocity would be 15.58 m/s and the vertical component of the velocity would be 14.07 m/s.

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