Fill in the data tables constant=10 HELP!!!

A 2-m, 30-n board with a 689 n human lying down on it. The fulcrum is exactly where their feet are. They stand around 1.75 meters. Scale reading is 330 n. less than one meter separates their center of mass from their feet (0.91 m).

The pivotal point of the beam is known as the fulcrum. A load is applied at the other end of a lever when an effort is exerted to one end of the lever. A mass will be raised as a result. Torque is essential to the operation of levers.

The point on which the lever rotates or balances is known as the "fulcrum." Your hand's fingers serve as the fulcrum when using a fork. In reality, scissors are only two levers together. Commonly known as a fixed lever, the handle on the toilet flusher.

The phrase can be used to describe a lever's pivot point or support as well as the focal point of a significant event or circumstance (like an important person or key decision-maker in a company).

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The horizontal velocity (v) of the arrow when it left the bow is 39.1 m/s.

The time of motion of an object is the time taken for the object to travel from its initial position to the final position.

The time taken for the arrow to travel down the given height is calculated as follows;

h = vt + ¹/₂gt²

where;

h = ¹/₂gt²

2h = gt²

t² = 2h/g

t = √(2h/g)

t = √(2 x 9.5 / 9.8)

t = 1.39 seconds

The velocity (v) of the arrow when it left the bow is calculated as follows;

X = Vₓt

where;

Vₓ = X/t

Vₓ = (54.3 m) / (1.39 s)

Vₓ = 39.1 m/s

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A jack is a heavy-duty cylinder with a screw mechanism.

The mechanical advantage is the number of times a machine multiplies the effort force. The longer the distance over which the effort force is applied, the greater the mechanical advantage of the machine.

Friction is the force that resists motion when the surface of one object comes into contact with the surface of another.

The common principle of all screws is that a rotating helix can cause linear motion.

In a third-class lever, the effort force lies between the resistance force and the fulcrum. Some kinds of garden tools are examples of third-class levers.

for example, a pair of tweezers, a hammer, or the jaw. The arm of effort is smaller than the arm of the load.

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Quality helps to distinguish the sound waves having same loudness and same pitch through the distinctive tone which is observed.

This is also referred to as timbre and is a feature which helps to distinguish sounds which have the same loudness. This means that the same loudness denotes the same amplitude while a similar pitch denotes the same frequency.

Quality is however the distinguishing factor it can be deciphered with the use of our sense of hearing which is ears and in the identification of sounds with such properties and is the reason why it was chosen as the correct choice.

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2265 helium-filled balloons will be needed to lift a person whose mass is 70 kg.

Bouyancy, also known as upthrust, is an upward force applied by a fluid against the weight of an object that is partially or completely submerged. According to Achimede's principle, a force acts in opposition to an object's weight; if the force is higher than the object's weight, the object will float, but if the force is less than the object's weight, the object will sink. As a result, the helium balloon's weight must be more than the man's weight in order to lift him.

Vm = 30L

Mass = 70kg

Air density = 1.20kg/m^3

Helium density  = 0.17kg/m^3

Overall density = Air density - Helium density

= 1.20 - 0.17

= 1.03kg/m^3

Convert the overall density to kg/liter

1.03/1000

0.00103kg/liter

Force on balloon

F = Overall density × vm

=  0.00103 × 30

= 0.0309kgf

Number of ballons is

70kgf/ 0.0309kgf

= 2265.37 ballons

=2265 ballons

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The time taken for the rock to reach its highest point is 1.2 seconds.

The time of motion of an object is the time taken for the object to travel from its initial position to the final position.

The time taken for the rock to reach its maximum or highest point is calculated as follows;

v = u - gt

where;

At the maximum height, the final velocity of the object is zero.

0 = u - gt

]gt = u

t = u/g

t = (11.5 m/s) / (9.8 m/s²)

t = 1.2 seconds

Thus, we can conclude that time from the initial position of the rock to the highest position of the rock is 1.2 seconds.

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The kinetic energy of the toy car after it has experienced the force is: 16 Joules

The kinetic energy formula and the procedure we will use is:

K.E. = 1/2 * m * v²

Where:

Information of the problem:

Applying kinetic energy formula we get:

K.E. = 1/2 * m * v²

K.E. = 1/2 * 2 kg (4 m/s)²

K.E. = 1/2 * 2 kg * 16 m²/s²

K.E. = 1/2 * 32 kg *m²/s²

K.E. =  16 kg*m²/s²

K.E. =  16 Joules

It is the energy possessed by a body due to its relative motion. It is usually expressed in Joules (J).

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Answer:

B, Yes

Explanation:

Since the 5g of magnesium became 3.5g and white fire and smoke, it still has the same mass. It is just in a different form.

Yes, the law of conservation of matter was upheld in Mariana's experiment because the missing mass was released as smoke, therefore the correct answer is option C.

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

As given in the problem  Mariana conducted an experiment where she burned a 5 g strip of magnesium metal in an open flame. The result was a 3.5g white ash collected in a crucible, a bright white flame, and smoke.

Yes, the law of conservation of matter was upheld in Mariana's experiment because the missing mass was released as smoke, therefore the correct answer is option C.

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The magnitude of the downward acceleration of the customer is 12.15  m/s².

A downward acceleration is the acceleration experienced by an object moving downwards.

During the downward motion of an object, the velocity of the object increases while the downward acceleration acceleration remains constant.

The velocity increases and eventually become maximum before the object hits the ground.

Also, another observation is that, the acceleration of the object is always directed downwards.

The magnitude of the downward acceleration of the customer on amusement park is calculated as follows;

a = 1.24 g

where;

a = 1.24 x 9.8 m/s²

a = 12.15  m/s²

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The complete question is below:

a customer sits in an amusement park ride in which the compartment is to be pulled downward in the negative direction of ayaxis with an acceleration magnitude of 1.24g,with g. find the magnitude of the acceleration.

If thrown with the same initial speed, the object will go six times higher on the Moon than Earth.

Velocity is the pace and direction of an object's movement, whereas speed is the timekeeping at which an object is travelling along a path. In those other words, velocity is a vector, whereas speed is a scalar quantity. 

Any time an object moving in a horizontal path experiences an acceleration, it is either speeding up, slowing, or spinning around because acceleration is described as any change in velocity over time.

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The torque experienced by a magnetic dipole moment M placed with its axis at angle theta with a uniform magnetic field B is τ = MB sin θ

Torque = Force * Perpendicular distance

F = m * B

F = Force

m = Magnetic pole strength

B = Magnetic field

τ = Torque

τ = m * B * 2 * l * sin θ

Magnetic dipole moment, M = 2 * m * l

τ = ( 2 * m * l ) * B * sin θ

τ = M B sin θ

Therefore, the torque experienced by a magnetic dipole moment M placed with its axis at angle theta with a uniform magnetic field B is τ = MB sin θ

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The velocity with which the collar strikes end B is 2.32 m/s.

How to calculate the work done by external forces on a body?
We conclude from the work energy theorem that any work performed on a body results in a change in total energy.

Given, mass of the collar = m = 0.5 kg
Therefore, effective weight of the collar = m*g = (0.5)*(9.81) = 4.905 N
Force acting on the collar = 5 N
We know, work done by external forces equates to the change in kinetic energy of the body.
Thus, ΔU = T ⇒ 0.5 * 0.5 * (v²-0) = 0.2[5 cos(30°) - 5 sin(30°) + 4.905)
⇒ v² = 5.39 m²/s² ⇒ v = 2.32 m/s.
Therefore, the velocity with which the collar strikes end B when acted upon by the 5N force is 2.32 m/s.

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Here, we have a workbench whose entire length is 2.2 meters, together with the weight of the car differential. The mass is supported by the left and always will be, hence 409.3 divided by 9.8 kg equals one divided by G.

We now have 76.0 kilos of cramp. Additionally, the left end of this workbench has been kept one meter away from the auto differential. Therefore, this or conversation difference will have a weight of 76 in two gravitational acceleration. where G is the gravitational acceleration.

We must determine the weight that is supported by the two ends of this workbench at a distance of 1.0 meters.

The entire upward forces, which represent and one placenta, should be equal to the downward forces, which represent the weight of that Auto differential, which is 76 into 9.8 newtons, if these words are and one an end to first utilizing translational equilibrium for this workbench. And the result will be 744 8 Northern.

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The mass of limestone (in kg ) required to neutralize the lake is 3542 kg.

First we have to balance the chemical equations:

[tex]H_{2}[/tex] [tex]SO_{4}[/tex]

[tex]CaCO_{3}[/tex] + [tex]H_{2}[/tex] [tex]SO_{4}[/tex] → CaS[tex]O_{4}[/tex] + [tex]H_{2}[/tex]O + C[tex]O_{2}[/tex]

HN[tex]O_{3}[/tex]:

CaC[tex]O_{3}[/tex] + 2HN[tex]O_{3}[/tex] → Ca(N[tex]O_{3})2[/tex] + [tex]H_{2}[/tex]O + C[tex]O_{2}[/tex]

It tells us that 1 limestone is needed for 2 moles of Nitric Acid.

Now, calculate number of moles by getting the product of volume and molarity.

moles [tex]H_{2}[/tex] [tex]SO_{4}[/tex]= 1.9 × [tex]10^{15}[/tex] M * (15.2 x [tex]10^{9}[/tex] L)

moles [tex]H_{2}[/tex] [tex]SO_{4}[/tex] = 288800 mol

moles HN[tex]O_{3}[/tex] = 8.6 × [tex]10^{-6}[/tex] M * (15.2 x [tex]10^{9}[/tex] L)

moles HN[tex]O_{3}[/tex] = 130720 mol

Total moles of limestone:

Moles of limestone = 288800 + 130720

Moles of limestone = 354160 mol

Multiply mol of limestone with its molar mass.

mass of limestone  = 354160× 100.086

mass of limestone  = 3542 kg

Thus, The mass of limestone (in kg ) required to neutralize the lake is 3542 kg.

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The equivalent power of coal transported in a mile long train containing 120 cars, each holding 110 tons of coal travelling at 60 mph is 6.04 * 10e12 J

P = E / t

P = Power

E = Energy

t = Time

Distance of train = 1 mile

Number of cars in the train = 120

Tons of coal in 1 car = 110 tons

Velocity of train = 60 mph

Energy of one ton coal = 2.8×10e10 J

Total coal = 120 * 110

Total coal = 13200 tons

Total energy of coal = 13200 * 2.8×10e10

Total energy of coal = 369.6 * 10e12 J

v = d / t

v = Velocity

d = Distance

t = Time

t = d / v

t = 1 / 60

t = 0.017 h

t = 61.2 s

P = ( 369.6 * 10e12 ) / 61.2

P = 6.04 * 10e12 J

P = 6.04 pJ

Therefore, the equivalent power of coal is 6.04 * 10e12 J

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The term "force" also refers to the effect that occurs when the body is moved from its position or is distorted. Force can be defined as the drive or pull of an item. We applied force to a wall, for example, but it did not move or change shape. even though we cannot see the distortion in a wall because it is a rigid body, there is still an exertion of force in actual practice.

Force

A force in pharmaceuticals is an influence that can alter how an object stirs. An object having mass can modify its speed—that is, accelerate—by being subjected to a force. Intimate synonyms for force include drive and pull. A force is a vector volume because it has both magnitude and direction. It is expressed as a newton in the SI system ( N). Force is denoted by the letter F. ( formerly P).

The net force acting on an item is equal to the rate at which its instigation changes with time, according to the original formulation of Newton's alternative law.

This rule, however, suggests that an item's acceleration is directly proportional to the net force acting on the object.

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Racial equality directed to a scenario in which individuals of all races and ethnicities exists treated equally, regardless of any differences in physical characteristics.

Racial equality occurs when organizations, like schools, give people of all races equal chances regardless of their physical characteristics, such skin color. It has always been difficult for ethnic minorities to achieve equality, especially in educational institutions.

According to research, black pupils face fewer expectations from their teachers and are more likely to be suspended or expelled than white students. They are also less likely to be enrolled in gifted programs.

The term "racial equality" describes a situation in which people of all races and ethnicities are treated equally, regardless of any physical distinctions. Racial equality occurs when institutions uphold people's moral, legal, and political rights.

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The volume of the gold found by the scientist whose density and mass is given in the question is 16.26 cm³.

What is density?

Density describes how compact or concentrated something is. Suppose you have two boxes, one is large and other one is small. However, their weight is same. That means the small box has a higher density as compared to the large box.

As given in the question,

The density of the gold rock is  19.3 g/cm³.

and the mass calculated is  312,000 mg which is equal to 312 g.

The equation for density is:

[tex]Density = \frac{mass}{volume}[/tex]

Putting the value from the question,

312/19.3 = volume

volume = 16.16 cm³.

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The magnitude of the gravitational force the moon exerts on Earth if Earth exerts a gravitational force of 1.99 x 10²⁰ newtons on the moon is 1.99 x 10²⁰ N

F = G m1 m2 / r²

F = Gravitational force of attraction

m1 = Mass of Earth

m2 = Mass of moon

r = Distance between moon and Earth

In this equation all the mentioned variables are constant for both gravitational force exerted by moon on Earth and by Earth on moon. So the value will be equal for both.

The equation mentioned above is the result of Newton's law of gravitation. This law states that any object in the universe attracts another object with a force which is directly proportional to product of both the masses and inversely proportional to the squared value of distance between them.

Therefore, the magnitude of the gravitational force the moon exerts on Earth is 1.99 x 10²⁰ N.

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By using internal energy, the heat transferred to the air until its volume doubles is 5570.69 joule.

We need to know about internal energy to solve this problem. For a closed system, with matter transfer excluded, the changes in internal energy are due to heat transfer and due to thermodynamic work done by the system on its surroundings. It can be determined as

ΔU = Q - W

where ΔU is the change in internal energy, Q is heat transferred and W is work done.

From the question above, we know that

m = 6 kg

P1 = 200 kPa

T1 = 298 K

P2 = 400 KPa

The internal energy should be

ΔU = Q - W

m(U2 - U1) = Q2 - W2

at the second state the work is zero

m(U2 - U1) = Q2

Assume constant specific heats

Q2 = m . Cv (T2 - T1)

Using the ideal gas

P1/T1 = P2/T2

200/298 = 400/T2

T2 = 596 K

Q2 = m . C . (T2-T1)

Q2 = 6 . 3.1156 . (596-298)

Q2 = 5570.69 joule

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Answer:

sleep well

Explanation:

bukas nalbg yan pree

Answer:

D= 300 miles

t= 6 hours

Speed = [tex]\frac{300}{6}[/tex] = 50 miles/h

The speed of the car is 50miles/h.

[tex]\frac{50}{3}[/tex] * 5 km/h

= 83.34 km/h

The speed of the car is 83.34 km/h.

Explanation: The answer has been given in both miles per hour and kilometer per hour.

The time taken for the stick that the bird dropped to reach the ground is 3.96 seconds.

The time taken for the stick that the bird dropped to reach the ground is determined the using formula below:

h = ut + ¹/₂ * g * t²

where the given parameters are given below:

h = 77.0 meters

u = 0

t = ?

g = 9.81 m/s²

Solving for the time required:

77.0 = 0 * t + ¹/₂ * 9.81 * t²

t² = 77.0 * 2 / 9.81

t² = √15.7

t = 3.96 seconds

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From the description of the problem, the total velocity is obtained as 3.7 yards/ second.

The term velocity is the ratio  of the distance to the time taken. Let us note that in this case we are being asked for the average velocity of the ball and that is what we shall set to do after a consideration of the problem.

We are told that the ball is snapped to him on the 20 yard line and he jumps back 7 yards to find a receiver before running to the 50 yard line before being tackled, all during a 10 second play.

We can see that the total distance that has been covered by the ball is 7 yards + 30 yards = 37 yards and the time that has been taken is 10 seconds.

Thus velocity = distance / time = 37 yards /10 seconds

= 3.7 yards/ second

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Answer: Fahrenheit

Explanation:

With the use of formulas, it will take time 4.25 seconds for the object to reach the speed 41.65 m/s when dropped.

Speed is the distance travelled per time taken. It is a scalar quantity and it is measured in m/s

If an object is dropped and reached 41.65 m/s in its fall, Let us first know the height at which it was dropped by using the formula

v² = u² + 2as

Since the object was dropped, u = 0

41.65² = 0 + 2 × 9.8 × H

1734.72 = 19.6H

H = 1734.72/19.6

H = 88.51 m

To know how long it takes to reach this speed, let us use this formula

H = ut + 1/2gt²

where u = 0

88.51 = 1/2 × 9.8 × t²

88.51 = 4.9t²

t² = 88.51/4.9

t² = 18.06

t = √18.06

t = 4.25 s

Therefore, it takes 4.25 seconds of time to reach this speed.

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If the output work is 500 J and the input work is 380 J, then the machine efficiency can be calculated as 130 % as per the efficiency formula.

Divide the output work by the input work to get a machine’s efficiency, then multiply the result by 100%.

Efficiency is equal to output times 100%.

You may determine the efficiency by figuring out what proportion of the energy input results in the desired output: Efficiency is defined as EnergyOut/EnergyIn 100%.

Utilizing less energy to deliver an energy service is referred to as energy efficiency. LED light bulbs, for instance, use between 75 and 80 percent less electricity to generate the same amount of light as incandescent bulbs.

According to efficiency formula we know

Efficiency = [tex]\frac{580}{380}[/tex] * 100 = 130%

But technically this is not possible as no engine has efficiency greater than Carnot engine i.e., 100%

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No, law of conservation of energy is not applicable to open systems.

Law of conservation of energy states that energy present anywhere can neither be created nor be destroyed by any means, it can only be converted from one form of energy to other form of energy. It means total energy of an isolated system remains same.

An open system is a system that can exchange energy and matter from the surroundings. The flow of energy takes places in an open system. Therefore, the law of conservation does not apply to an open system as it can lose or gain energy, hence its total energy will not be constant and will violate law of conservation of energy.

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The final volume of the balloon is 197,083 L.

They are proportional to each other if the pressure does not change. However, there are pitfalls. To perform calculations we have to use the so-called absolute temperature. Increased external air pressure compresses the balloon.

Using equation;

PV =nRT

here constants are P,n, R

so the relation between P and T is

V₁ /T₁= V₂/T₂

V₂ = (V₁ /T₁)×T₂

    = (125,000/300)×473

     = 197,083 L.

As the volume of the balloon decreases the pressure inside the balloon increases. After all external air pressure can compensate. It becomes a balloon filled with dense cold air. According to Boyle's law, the volume of a gas of constant mass at constant temperature is inversely proportional to its pressure. The air around you has weight and pushes away everything it touches. This pressure is called atmospheric pressure or barometric pressure. This is the force exerted on a surface by the air above as gravity pulls the surface toward the Earth.

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The maximum vertical height hmax to which the ball will climb by the law of conservation of energy is, hmax = (1/2g)ν² cos θ

What is conservation of energy?

The law of conservation of energy states that the total amount of energy of an isolated system remain constant. Also for energy to be conserved, the sum of initial kinetic energy and the potential energy of the system is equal to the sum of final kinetic energy and the potential energy of the system. i.e.

Ki + Ui = Kj + Uj

where K represent Kinetic energy and U represents potential energy.

Since the ball is launched with initial speed v from ground level up a frictionless slope, it means the ball slides up the slope without rolling. The initial kinetic energy of the ball is given as:

Ki = 1/2mv²

The slope makes an angle θ with the horizontal. This means that velocity will be equal to zero in y-direction and velocity in x-direction is:

Ki = 1/2mv²cos θ

Potential energy of the max height is Uf = mghmax

The final potential energy the ball posses will be equal to the intial kinetic energy of it at the maximum height. Thus by the conservation of energy:

mghmax =  1/2mv²cos θ

hmax =  1/2gmv²cos θ

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