If the Mass Number is the sum of the protons and neutrons in an atom, what is
the mass number of

Answer:

The force exerted by the rope on the bucket of water is 66.195 N.

Explanation:

Given;

mass of the bucket, m = 4.5 kg

acceleration of gravity, g = 9.81 m/s²

upward acceleration of the bucket, a = 4.9 m/s²

The upward force applied on the bucket by the rope is calculated as;

F = ma + mg

F = m(a + g)

F = 4.5(4.9 + 9.81)

F = 4.5(14.71)

F = 66.195 N

Therefore, the force exerted by the rope on the bucket of water is 66.195 N.

Answer:

so its 10pm in seattle

Explanation:

Answer:

Sound waves

Explanation:

The sound waves are bouncing off the walls around the corner

Answer:

Please show the wave interactions to choose from so I can give you an answer

Explanation:

(If diffraction is an answer it should be that!)

Answer:

weight =mass ×gravity

Explanation:

gravity =9.8

9.8×5

=49.05N

hope it helps

Answer:

50N (using 10N/kg)

Explanation:

mass*gravitational field strength

5*10

50N

Answer:

73.72

Explanation:

For this subtraction problem, the answer or solution is expressed to the least precise of the numbers we are trying to subtract.

The least precise number is the number with the lowest significant numbers:

105.4 - 31.681

105.4  has 4 significant numbers

31.681 has 5 significant numbers

  So;

             105.4  

        -      31.681

        ------------------

                 73.719

          ----------------

The solution is therefore  73.72

Answer:

Explanation:

V₀ = 0 m/s

V = 41 m/s

S = 480 m

___________

a - ?

Distance traveled:

S =  (V² - V₀²) / (2*a)

Acceleration :

a = (V² - V₀²) / (2*S)

a = (41² - 0²) / (2*480) = 1.75 m/s²

Answer:

Generally it shows that the Earth will attain a velocity of

\(v= 4.0133*10^-15 m/s\)

Explanation:

From the question we are told that

Total Number N=300

Force=800

Time=0.10s

Weight of Earth \(W=5.98*10^24kg\)

Generally the equation for Impulse is Force *Time

\(Impulse =Force *Time\)

And

\(Force *Time=Change\ in\ momentum\)

Therefore

   \(300*10^6*800*0.1 = 5.98*10^24*v\)

   \(v= \frac{300*10^6*800*0.1}{5.98*10^2^4}\)

   \(v= \frac{2.4*10^1^0}{5.98*10^2^4}\)

   \(v= 4.01*10^-15 m/s\)

Generally it shows that the Earth will attain a velocity of

    \(v= 4.0133*10^-15 m/s\)

The speed of the block immediately after the billet exist is 0.346m/s.

An object's speed is how quickly it moves through space. When moving quickly, an object can cover a large distance in a short period of time. As opposed to this, a slow-moving object travels a relatively short distance in the same amount of time. A thing that isn't moving at all is said to have zero speed.

Mass of wood = 3.7kg

Initial speed u₁=0

Mass of bullet is = 3x10⁻³kg

Initial speed of block =450m/s

Final speed of block v₂=230m/s

According to linear momentum

Initial linear momentum = Final linear momentum

Mu₁+mu₂ =Mv₁+ mv₂

Mx0 + 3x10⁻³ x450 = 3.7v₁ + 3x 10⁻³ x230

1.35-0.069 = 3.7v₁

1.281 = 3.7v₁

v₁ = 0.346m/s

The speed of the block immediately after the billet exist is 0.346m/s.

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Answer: They Are all gas giants.

Explanation:

The statement that correctly describes the direction of conventional current in the circuit is : ( C ) current is directed from A to B to C to D

conventioanl current is simply the flow of protons from the positive terminal of the voltage source ( battery ) to the negative terminal of the battery. Also conventional current is the charge transferred in a given direction per unit time. for a conventional current the charge carrier is irrelevant.

Hence we can conclude that the direction of conventional current in the circuit is : current is directed from A to B to C to D.

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Attached below is the missing part of the question

Answer:

W = M g = 150 kg * 9.81 m/s^2 = 1470 N

You were only given 3 significant figures in the question.

The weight of the box is 1471.5 N.

In science and engineering, an object's weight is defined as the force of gravity acting on the thing. Weight is sometimes described as a vector quantity in common textbooks, denoting the gravitational force acting on the item.

Given parameters:

Mass of the box, m = 150 kg.

Acceleration due to gravity, g = 9.8 m/s².

Hence, weight of the box is, W = mg = 150 kg × 9.81 m/s² =1471.5 N.

SO, weight of the  box with a mass of 150 kg on Earth is 1471.5 N.

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the axillary method of taking temperature is advisable for commonly used in children

The axillary (armpit) technique is a simple approach to take a child's temperature, especially for children who are unable to hold a thermometer in their mouths.

The most frequent method for measuring a temperature is the axillary approach. Rectal temperature measurement is NOT advised for an active youngster. The pulse rate is the number of times the heart beats each minute.

Although the values are impacted by ambient temperature, axillary measures are pleasant for patients and pose no safety concern. Many experts advise against using axillary measurements to identify fever due to their poor accuracy.

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Newton first law state that anything in motion or rest will remain in motion or in rest until an external force is applied

Newton third law of motion state that every action have equal and opposite reaction

Answer:

Newton's laws of motion relate an object's motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. ... In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Explanation:

mark me brain list please

Answer: It reduces the activation energy.

Explanation:

A catalyst is a material that, without being consumed by the process, speeds up a chemical reaction or decreases the temperature or pressure required to initiate one. The addition of a catalyst to a reaction is known as catalysis.

The bonds holding together the atoms in molecules are ruptured, altered, and repaired during a chemical reaction, recombining the atoms to form new molecules. By decreasing the activation energy, the energy hurdle that must be cleared for a chemical reaction to take place, catalysts improve the efficiency of this process. As a result, catalysts facilitate the formation of chemical bonds between atoms to create novel combinations and new compounds. Chemical processes are accelerated and become more energy-efficient when catalysts are used.

Answer:

Try lookin those questions up on Brainly

Explanation:

The distance of light from the puppet, she can use a laser rangefinder or a laser distance meter.

To measure the distance of light from the puppet, she can use a laser rangefinder or a laser distance meter.

These devices emit a laser beam that reflects off the puppet and measures the time it takes for the beam to return. Based on the speed of light, the device can calculate the distance accurately.

Another option is using a photodiode or a light sensor to measure the intensity of light emitted by the puppet. By comparing the intensity of light at different distances, she can estimate the distance of the puppet.

Additionally, she could use a camera with a known focal length and apply techniques like triangulation or parallax to determine the distance based on the relative position of the puppet in the camera frame.

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Answer:

Over 60N

Explanation:

If the resultant force is equal, the car will not move. In order for the car to move, Becky needs to apply a force that is stronger than 60N, since her dad is already pushing 240 (240+60=300), so anything over 60 from Becky would move the car.

Answer:

Explanation:

The next charge on an object with an excess of 2.15x10^20 protons can be calculated using the formula Q = ne, where Q is the charge, n is the number of excess protons, and e is the elementary charge. The elementary charge is a fundamental physical constant that represents the electric charge carried by a single proton or electron. Its value is approximately 1.602x10^-19 coulombs.

Substituting the given values, we get:

Q = (2.15x10^20)(1.602x10^-19)

Q = 3.44x10

3.44x10-1 C

Therefore, the next charge on an object with an excess of 2.15x10^20 protons is 3.44x10^-1 Coulombs.

Part 1: The wavelength of the sound wave is 47.26 cm

Part 2: Frequency is 725.49 s^-1

Part 3: The length of the air column when the tube resonates again is 70.695 cm.

Part 1:

The wavelength of the sound wave can be calculated using the formula:

wavelength = 4L/n

where L is the length of the air column in the tube and n is the harmonic number (in this case, n = 7).

Given that the water level is 198.25 cm below the top of the tube, the length of the air column is:

L = total length of tube - water level = 4L - 198.25

Solving for L, we get:

L = 198.25/3 = 66.083 cm

Therefore, the wavelength of the sound wave is:

wavelength = 4L/n = 4(66.083)/7 = 47.26 cm

Part 2:

The speed of sound in air is 343 m/s. The frequency of the sound wave can be calculated using the formula:

frequency = speed of sound / wavelength

Substituting the values we have:

frequency = 343 / (47.26/100) = 725.49 s^-1

Part 3:

When the tube resonates again, the air column length will be equal to a multiple of half-wavelengths. Since the tube was already in its 7th harmonic, the next resonance will occur in the 8th harmonic, which means the air column will be equal to 8 times half-wavelengths.

So, the length of the air column can be calculated using the formula:

L = (2n-1)wavelength/4

where n is the harmonic number (in this case, n = 8).

Substituting the values we have:

L = (2(8)-1)(47.26/2)/4 = 282.78/4 = 70.695 cm

Therefore, the length of the air column when the tube resonates again is 70.695 cm.

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Answer:

it would be 990 m.

Explanation:

22 m/s x 45 seconds.

Answer:

\(\Delta L = 300\,m\)

Explanation:

La longitud del tren se deriva de la siguiente fórmula (The length of the train is derived from the following formula):

\(\Delta L + 200\,m = v\cdot \Delta t\)

\(\Delta L = \left(36\,\frac{km}{h} \right)\cdot \left(1000\,\frac{m}{km} \right)\cdot \left(\frac{1}{3600}\,\frac{h}{s} \right)\cdot (50\,s) - 200\,m\)

La longitud del tren es (The length of the train is):

\(\Delta L = 300\,m\)

If an object is moving with uniform velocity, it means that its speed and direction remain constant over time.

In this case, the equations of motion, which describe the relationship between an object's displacement, velocity, acceleration, and time, will not change.

The equations of motion for an object moving with uniform velocity are:

Displacement (s): s = ut + (1/2)at²

Final velocity (v): v = u + at

Velocity-time relationship: v = (s - u) / t

Displacement-velocity relationship: s = (v + u) / 2 * t

Acceleration (a): a = 0

In these equations:

s represents the displacement of the object.

u is the initial velocity of the object.

v is the final velocity of the object.

t is the time taken for the motion.

a denotes the acceleration of the object, which is zero in the case of uniform velocity.

Since the acceleration (a) is zero, the terms involving acceleration disappear from the equations, simplifying them. The equations reduce to:

Displacement (s): s = ut

Final velocity (v): v = u

Velocity-time relationship: v = s / t

Displacement-velocity relationship: s = v * t

In summary, when an object moves with uniform velocity, the acceleration term in the equations of motion becomes zero, simplifying the equations accordingly.

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Here volume of gas is not given so question is solved assuming volume as 1 L.

The number of moles of 1 L gas present in the sealed container at a

pressure of 125 kPa at 25 degrees Celsius is 0.0067 moles.

The ideal gas law equation can be written as

PV  = nR T

Here

P is the pressure of the gas in atm

V is the volume it occupies in L

n is the number of moles of gas present in the sample

R is the universal gas constant, equal to 0.0821 atm L/ mol K

T is the absolute temperature of the gas in Kelvin

Now, it's important to realize that the units you have for the volume, pressure, and temperature of the gas must match the unit used in the expression of the universal gas constant.

So

P = 125 kPa

1 atm = 760 kPa

P = 125/760 = 0.1644 atm

T = 25 degree celsius  = 25 +273 = 298 K

Taking V  = 1 L

So

n  = PV/RT

n = 0.1644 x 1 / 0.0821 x 298

n =  0.0067 moles

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Answer:

The more compact the body, the less friction and the more mass the mass must have friction.

Answer:

F ihghr gtgrugugerygerugruegu guergu reugreuguregureguregugru gru gr eg

Mildred, being a minor, has the legal right to disaffirm the contract and return the car to Audrey.

As a minor, Mildred is considered to have limited legal capacity to enter into contracts. In most jurisdictions, minors have the right to disaffirm or void a contract they have entered into, which means they can choose to treat the contract as if it never existed. This right exists to protect minors from entering into agreements that they may not fully understand or that may not be in their best interest.

In the given scenario, Mildred, being 17 years old, falls under the category of a minor. Therefore, she has the legal right to disaffirm the contract with Audrey and return the car. By exercising this right, Mildred can effectively undo the transaction and restore the parties to their pre-contractual positions.

It's important to note that the specific laws regarding the disaffirmation of contracts by minors can vary between jurisdictions. It is advisable for Mildred to seek legal guidance to understand the applicable laws in her specific location.

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Answer:

Friction !!!

Explanation:

correct option is b. doubled

the change in energy of an ocean wave when its amplitude changes. An ocean wave initially has an amplitude of 2.5 m and then the amplitude increases to 5.0 m due to a change in weather conditions.

Amplitude is the maximum displacement from its mean position to the extreme position of a particle of the medium in which a wave propagates.

The amount of energy transported by the wave is

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Minimum volume must the slab have so that a 45 kg boy can sit on the slab without it sinking is 0.465 m³.

What is buoyant force?

The buoyant force is the upward force exerted on an item that is fully or partially submerged in a fluid. This upward thrust is also known as an upthrust. Because of the buoyant force, a body submerged partially or entirely in a fluid appears to  be lighter or to lose weight.

Given:

Density of the styrofoam, ρ' = 32 kg/m³

Now, let the volume of the slab = V

the submerged volume be = V ;

now, the volume of water displaced will be V  

thus,

the buoyant force acting will be = ρVg

{where,

ρ is the density of water

g is the acceleration due to gravity}

now,

total downward force acting = weight of the boy + weight of the slab

total downward force acting =45 × g + ρ' × V × g

For the no sinking condition, buoyant force should be equal to the total downward force.

thus,

ρ × V × g = 45 × g + ρ' × V × g

or

ρ × V = 45 + ρ' × V

on substituting the values

V ( 1000 - 32 ) = 45 ;

or

V = 0.465 m³

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Answer:

read this it might help some

When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.

Explanation: