Acceleration (m/s²)
1. Complete the following table:
Starting speed
(m/s)
2
10
8
b
2
5
4
5
Final speed (m/s) Time taken (s)
25
8
2
2
10
2

Speed is a scalar quantity that describes "how fast an object is moving." The rate at which an object travels a distance can be thought of as its speed. The time taken by Fernando is 56 s.

Speed is only the rate at which motion changes. Or just the distance a body travels in a unit of time. Velocity is the rate at which an object's position changes and it takes direction into account. Speed has just magnitude because it is a scalar quantity.

The expression used to calculate speed is:

Speed = Distance / Time

Time = Distance / Speed

t = 1680 / 30

t = 56 s

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It is proved for gravitational radius that Rg=GMs/c^2 .

Given,

The mass of sun = Ms

Sphere of radius = Rg

Sun collapses to a sphere such that the work required to remove a small mass (m) from the surface would be equal to its rest energy mc^2 .

The given radius (Rg) is called as gravitational radius for sun.

We know,

gravitational potential energy Ug = G ×Ms×m/Rg

given, the rest energy, E =mc^2

As it is given that work required to remove small mass is equal to rest energy,

thus, Ug=E

G×Ms×m/Rg = mc^2

Rg =GMs/c^2

Hence, it is proved for gravitational radius that Rg=GMs/c^2 .

Total work done in assembling bodies together,in their respective places, is called gravitational potential energy of the system.

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The height attained by the ball is 11.86m

a ball is shot from the ground straight up into the air its initial and final velocity is

initial velocity, u = 50 ft/s = 50×0.305  = 15.25m/s

final velocity ,v = 0 m/s

gravity =-9.8 m/s²

( negative sign shows acceleration in opposite direction)

height =?

using the newton motion of equation

v² = u² + 2as

where

a= acceleration due to gravity(g)

s = height

v² = u² + 2gs

(0)² = (15.25)² + 2×(-9.8)×s

0  = (15.25)² -  19.6 × s

s= - (15.25)²/ 19.6

s = 11.86m

after ignoring the air resistance the maximum height of the ball is 11.86m

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The power train is a vehicle's consists of components that generate and transmit power to the wheels.

The collection of all the parts that propel your car forward is called the powertrain. The engine of your car generates power, which the powertrain then transfers to the wheels on the ground. The engine, transmission, driveshaft, axles, and differential are the main parts of a powertrain. A high-performance sports sedan is frequently described as having smooth steering, acceleration, and braking, as well as great body control and improved driving safety. These methods are crucial, but they are not the "end-all" of a great sports car. Its incredible performance figures, such as its ability to accelerate from zero to one hundred kilometers per hour in just seconds, come exclusively from your powertrain.

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Answer:

3,510 po yung sagot pa brainliest po

Explanation:

By adding the distances for cycling, running, and swimming, the total race distance can be determined. The distance covered by him is 13.5 km.

Converting all the distances to the same unit before combining them because the triathlete swims 500 meters, runs 3000 meters, and cycles 10.0 kilometers.

Divide 500 meters by 1000 to get kilometers: 500 meters divided by 1000 equals 0.5 kilometers.

Divide 3000 meters by 1000 to get 3 kilometers: 3000 meters divided by 1000.

The triathlete completes a 0.5-kilometer swim, a 3-kilometer run, and a 10.0-kilometer bike ride.

Now that the distances have been added, the total is 13.5 kilometers: 0.5 kilometers for swimming, 3 kilometers for running, and 10.0 kilometers for cycling.

Consequently, the race's overall length is 13.5 kilometers.

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Answer: The maximum possible speed v is √2(  hν - Ф  ) / m

Explanation: You could be referring to the provided explanation, despite the fact that the question isn't comprehensive. When a photon collides with the surface of any metal, it transmits all of its energy to the electron in the atom. The collision causes the electron to travel with a certain amount of kinetic energy. This is referred to as the photoelectric effect. The maximum kinetic energy is calculated using Einstein's equation for the photoelectric effect:

K.E. = hν - Ф

½ mv² = hν - Ф

Hence the maximum possible speed is:

v = √2(  hν - Ф  ) / m

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Positively charged rod acting as an attractor will cause spheres A and B's combined negative charges to gravitate toward sphere A. A and B's combined positive charge will concentrate in sphere B.

Since the spheres are oriented perpendicular to the rod, an equal force from the positively charged rod will pull the spheres' negative charges, C and D, towards the direction of the rod. However, they won't focus on just one area. There have been no charging movements.

Any geometry where angles may be measured has a perpendicular. When two lines cross, they make a 90° angle. Lines have perpendiculars running through them at every point along the length of them in the majority of geometries (including spherical, Euclidean, hyperbolic, and others). The answer to your query is indeed true.

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The speed of proton is 0.063c given that the rest energy of an electron is 0.511MeV and the rest energy of a proton is 938MeV, with both particles having kinetic energies of 2.00MeV.

From the data given,

Rest energy of an electron = 0.511MeV

Rest energy of a proton = 938MeV

Kinetic energies (K) = 2.00MeV

Using the equation.

γ=K/E_0 +1      (1)

Where, γ represents the ratio of total energy to the rest energy of the particle

γ=2.00MeV/938MeV+1  

γ=0.002+1

γ=1.002

γ can also be derived as shown below;

γ=1/(√1-v^2/c^2)

Making v which is the velocity the subject of formula we get;

γ^2=1/(1-v^2/c^2)    by squaring both sides

Simplifying it we get;

1/γ^2 =1-v^2/c^2  

v^2/c^2 =1-1/γ^2  

v/c=√1-1/γ^2  

v=√1-1/γ^2 ×c     (2)

Putting the values into equation 2 we have;

v=√1-1/〖1.002〗^2 ×c

v=√1-0.996×c

v=√0.004×c

v=0.063×c

v=0.063c

The speed of proton is 0.063c.

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here,

the inner diameter , d = 10 um = 10 * 10^-6 m

radius , r = d/2 = 5 * 10^-6 m

resistivity , p = 0.5 ohm.m

length , l = 6 mm = 0.006 m

the resistance , R = p * l /area

R = p * l /( pi * r^2)

R = 0.5 * 0.006 /(pi * ( 5 * 10^-6)^2) ohm

R = 3.82 * 10^7 ohm (Answer)

the resistance of a wire is 3.82 * 10^7 ohm

Neurons, or nerve cells that transmit nerve impulses, consist of a cell body, an axon, and a few dendrites. Signals travel through synapses, where the axon of one neuron meets the dendrites of another neuron, using chemicals called neurotransmitters.

An electrical signal that travels along a nerve fiber in response to a stimulus and conveys the recording of sensations from receptors or instructions to effectors: Propagation of an action potential along the length of a neuron.

Differential charges across the plasma membrane of neurons generate nerve impulses. How does this charge difference come about? The response contains ions, which are charged atoms or molecules.

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john needs to measure the brightness of a light bulb using the metric system, in candela he expresses his measurement.

The decimal standard for measuring is a globally perceived decimalized arrangement of estimation. It is in far and wide use, and where it is taken on, it is the just or most normal arrangement of loads and measures. Decimal standard can be involved by a few groups all around the world as a solitary method for estimating the amounts. This will make them to effectively think about their works. The Decimal standard for measuring was first embraced in France, and essentially every country on the planet currently utilizes it. Be that as it may, for reasons unknown, America hasn't gotten the update yet. The decimal standard gives units of estimation to remove, volume, mass, time, and temperature. It constructs these units utilizing a fundamental unit and a bunch of prefixes. The accompanying rundown shows five significant essential units in the decimal standard.

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Answer:

A. candela

Explanation:

I did a quiz with this question.

The global positioning system (GPS) satellite  that moves in a circular orbit with period of 11h 58 min has an orbital radius of: 26.55465166*10^6 m

To solve this problem the orbital radius formula and the procedure we will use is:

r =[tex]\sqrt[3][/tex][tex]\sqrt[3]{}[/tex][(G* m *T²)/(4 * π²)]

Where:

Information about the problem:

By converting the time period of (h) and (min) from (s) we have:

T = (11h *3600 s/ 1 h) + (58 min * 60 s/1 min)

T = 39600 s +3480 s

T = 43080 s

Applying the orbital radius formula we get:

r =[tex]\sqrt[3][/tex][tex]\sqrt[3]{}[/tex][(G* m *T²)/(4 * π²)]

r =[tex]\sqrt[3][/tex][tex]\sqrt[3]{}[/tex][(6.67 × 10⁻¹¹ m³/kgs² * 5.972 × 10²⁴ kg *(43080 s)²)/(4 * (3.1416)²)]

r =[tex]\sqrt[3][/tex][tex]\sqrt[3]{}[/tex][1.8725*10^22 m³]

r= 26.55465166*10^6 m

It is the maximum of the radial distribution curve of the outermost orbital.

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1) Heat is added to a solid by exposing the solid to heat sources

2) The antifreeze is used to keep water liquid in winter

3) Frost is formed by the withdrawal of heat

We know that heat is that which leads to the existence of a temperature difference between two bodies. This the reason for a change in temperature of a body is the addition or the withdrawal of heat.

We could add heat to a body when we heat the body up by exposing the body to a source of heat. For instance, we add heat to food when we place the food on top of our gas cookers and light the gas cooker.

The antifreeze is used to decrease  the temperature at which water freezes. We know that addition of a solute would make pure water to freeze at a temperature that is less than zero degrees. This helps to keep the water in the liquid state at temperatures less than zero during winter.

Frost is formed when heat is withdrawn from a object thus that its temperatures decreases until it reaches the ice point.

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Answer:

1. When a solid is heated, it gains enough kinetic energy to break the force of attraction that holds it in a fixed shape, and it turns into a liquid.

2. The purpose of antifreeze is to transfer heat from a car's engine to a radiator without causing it to boil or freeze. The mixture raises the boiling point of water while decreasing its freezing point. Other chemicals in antifreeze protect the coolant passages in the metal radiator and engine from rust and corrosion.

3. When the temperature is freezing, water vapor condenses on the solid surface and condenses to produce dew, which eventually freezes.

The force applied to the small piston in order to lift the engine would be 376.56 N.

The total applied force per unit of area is known as the pressure.

The pressure depends both on externally applied force as well the area on which it is applied.

As given in the problem,

the cross-sectional area of the small piston =0.045 m2

the cross-sectional area of the large piston =0.239 m2

weight of the engine = 2000 N

By using the Pascal law,

Force /0.045 = 2000/0.239

Force = 376.56 N

Thus, the force applied on the small piston would be 376.56 N

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The force produced by the train's engine will be 175000N.

Force is an external agent that has the power to alter an object's state of motion or rest. In a brief, force is a vector quantity that's also defined as a push or pull exerted on an object as a result of the object's contact with another object. The Newton (N) is the unit of force F.

F = ma

Here, F  is force, m is mass and a is acceleration of the object.

We are given here,

The force by the train weight = [tex]Fw[/tex] =  150,000N

The force creates by the friction = [tex]F_{f}[/tex] = 25,000N

Thus , to get the total force of the train's engine by adding force by weight and force by friction is given as,

[tex]F_{t} = F_{w}+ F_{f}[/tex]

Then for getting total force of the train's engine putting above values in the expression ,

[tex]F_{t} = 150,000 N +25,000N\\F_{t} = 175,000N[/tex]

Hence, the train’s engine has to produce 175000N force to become in equilibrium.

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Answer:

ethylene

Explanation:

ethylene is a compound consist of two double bonded carbon atom and four hydrogen atoms at room temperature is a gas

Answer:

Ethylene

Explanation:

Because Ethylene is a simple molecule composed of two double-bonded carbon atoms and four hydrogen atoms. It's a gas at room temperature. Ethylene molecules can be chemically bonded, end to end, to form a polymer named polyethylene.

Answer:

Inheritance

Explanation:

Passing of genetic material to offspring over the next generations

0.81 km far east she walked.

The ratio of the sum of quantities to the entire number of quantities is what is simply meant by the word "average." In Physics, an alternative strategy is used. Let's first define velocity precisely as well as speed and how the two are related before moving on to average velocity. The change in location of an object with respect to time is referred to as its speed. On the other hand, velocity is nothing more than the speed that is specified in relation to the direction that an item travels. For now, let's return to the average velocity before we get into further detail regarding the distinction between speed and velocity.

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In the near future, I hope that physicists will work on the following theories:

A theory for superconductors that operate at high temperatures, like YBCO.

A stochastic Monte Carlo approach, such as the wave function of interacting electrons in alkali metals, that can handle multiple identical fermions.

A hypothesis for iron superconductors, such as FeSe surface layers on a substrate.

A hypothesis explaining dark matter.

I believe environmental issues will have a greater impact on physics. Cleaner and greener lab equipment will be used in science. The particle-accelerator laboratories that once took pride in bragging about how much electricity they used to run collision tests will either have to be more discreet or, even better, prioritize energy-saving solutions. Air travel will become less acceptable as the effects of climate change worsen, making it more difficult for physicists on the go to defend their conference flights.

The field of medical physics will keep growing, with new imaging technologies and better radiotherapy procedures. NASA's James Webb Space Telescope should finally take off in astronomy.

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Collin can use stoichiometry chemistry to determine the mass of the s'more using this information.

The study of quantitative ratios or relationships between two or more substances undergoing a physical change or a chemical change is known as stoichiometry (chemical reaction). The word is derived from the Greek words "element" and "metron" in the Greek language (meaning "to measure"). Calculations involving stoichiometry typically involve the mass or volume of products and reactants.

The law of conservation of mass, which holds that matter cannot be generated or destroyed but can only be changed from one form to another, is explained by the basic mathematical principle of stoichiometry. A chemical reaction needs a balanced stoichiometry in order to start and proceed to completion.

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As the speed of the object increases, the fluid resistance increases.

The fluid resistance is what could otherwise be referred to as the drag force. This is the force that inhibits the object from moving through the fluid. Thus it drags the object and prevents its motion.

This fluid resistance is caused by the layers of the fluid as the object moves through the fluid. As the speed of the object increases, the fluid resistance increases.

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An object of mass “15kg” is in free fall in a vacuum where there is no resistance determine the acceleration of the object -9.8 m/s^2

An object of mass “15kg” is in free fall in a vacuum where there is no resistance

During a free fall motion an object acquires acceleration

a = g  ( gravity)

a = 9.8 m/s^2

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[tex]Given: Current $30 \mathrm{~A}$ along $x$-axis to left $\left(I_1\right)$current $50 \mathrm{~A}$ along $\gamma$-axis $(0=z, y=0.280 \mathrm{~m})$ bo righta) Take a point $P$ at distance $x$ below $x$-axis$B=$ Magnelic field at $P$$B_D=\frac{\mu_0 I_1}{2 \pi x} \hat{k}+\frac{\mu_0 I_2}{2 \pi(0.28+x)}(-\hat{k})=0\left(\mu_0=4 \pi_{\times 10^{-7}} \mathrm{n} / \mathrm{m}\right)$[/tex][tex]$\frac{\mu_0 I_1}{2 \pi \alpha}=\frac{\mu_0 I_2}{2 \pi(0 \cdot 28+x)} \hat{k} \Rightarrow \frac{\mu_0 30}{2 \pi \alpha} \hat{k}=\frac{\mu_0^x 50}{2 \pi(0.28+x)} \hat{k}$$\Rightarrow x=0.42 \mathrm{~m}$[/tex]

The magnetic impact on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it while the charge is travelling through a magnetic field.  The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, such those utilized in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetized things.

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The amount of heat required to warm the ice is 38.317 KJ

What is specific heat capacity ?

In scientific terms, a specific heat capacity is the quantity of heat (J) absorbed by a material every time its temperature goes up 1 K (or 1 °C), given in J/(kg K) or J/(kg °C) per unit mass. formulae for specific heat capacity is given by

Given data:

The mass of ice is, m = 40.0 g.

The initial temperature is, T = - 10 degree Celsius.

The final temperature is, T' = 110.0 degree Celsius.

The heat capacity of ice is, c = 2.09 J/g C.

The heat capacity of steam is, c' = 2.01 J/g C.

When ice absorbs heat, the conversion takes place from ice to water (liquid) and from the liquid to steam at 110 degree Celsius. So,

The amount of heat absorbed is given as,

Q = m[c(T' - T) + c'T']

Q = 40[2.09 x (110-(-10)) + 2.01 x (110+273))]

Q = 38,317.2 J

Convert in kJ as,

Q = 38,317.2/1000

Q = 38.317 kJ

Thus, we can conclude that the amount of heat required to warm the ice is  38.317 kJ.

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If the atomic orbitals are oppositely charged and are out-of-phase combinations then they interact destructively.

In Chemistry, molecular orbital theory(MOT) indicates the design of electron movement in a molecule.

The theory also states that electrons have wave-like nature which occurs as a result of the combination of the atomic wavefunction.

Theory suggests that there are two types of orbitals in a molecule: bonding orbitals (BO) and anti-bonding orbitals(ABO).

More are the chances of molecule stability if the electrons are present in bonding orbitals rather than anti-bonding orbitals.

Molecular orbitals are produced by the overlapping of atomic orbitals. When only the crusts of waves overlap in molecule orbitals they form constructive interference while overlapping of troughs causes destructive interference.

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The magnitude of the magnetic field in the region through the current passes is 8×10⁻³  T.

The magnetic field is defined as the field the magnetic materials generate or when an electric charge moves in a field region that generates the magnetic field.

It is given that:

A conductor carrying a current I = 15.0 A is directed along the positive x-axis and perpendicular to a uniform magnetic field.

As we know,

F = ilB

i = 15 A
F/l = 0.120 N/m

B = (F/l)(1/i)

B = 0.120(1/15)

B = 8×10⁻³  T

Thus, the magnitude of the magnetic field in the region through the current passes is 8×10⁻³  T.

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The Spring constant (K) = 9 N/m.

We have a force of 8 lb is required to keep a spring compressed to 13 ft shorter than its equilibrium length.

We have to determine the Spring constant.

The restoring force is directed towards the Equilibrium position.

According to the question, we have -

Force = 8 lb = 8 x 4.45 = 35.6 Newton.

Displacement = 13 ft = 3.96 meter.

Now -

The Restoring force = Applied force

Therefore -

|F| = Kx

35.6 = 3.96K

K = 8.99 = 9 N/m.

The Spring constant K = 9 N/m.

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The momentum of the pellet just before it hits the modelling clay is 0.0816 kg-m/s the velocity of the pellet just before it hits the modelling clay is 40m/s.

Assumption:

1)the pallet embeds into the clay.

A perfectly inelastic collision is one where the two objects that collide together become one object, losing the maximum amount of kinetic energy.

e=0

In perfectly inelastic collision the momentum is conserved.

given:

velocity of the truck + clay = 0.8m/s

mass of the truck + clay = 0.1 kg

mass of the pallet = 2g=0.002kg

a)

now since the example is of perfectly inelastic collision the momentum will be conserved .

i.e. momentum before collision  = momentum after collision

momentum of pallet =  momentum of( truck + clay)

momentum of pallet = (0.1+0.002)×0.8

momentum of pallet =0.0816 kg-m/s

b)

momentum before collision= mass of pallet ×velocity of pallet  + mass of truck × velocity of truck

velocity of pallet =0.0816/0.002

velocity of pallet =40m/s

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Answer: harvest moon

During the harvest season, they would worship the full moon, giving thanks for a plentiful harvest. The women in each family would prepare a table full of newly harvested rice and fruit, in an ancient tradition called 'charye. ' The origins of Chuseok can be traced back to this custom.

ceremonies

hope this helps

The resultant vector will be 29.5° E of N.

A = 5 m/s

B = 7 m/s at 25° NE

C = 3 m/s at 45° NW

To find the resultant vector for these given vectors,

first we need to resolve the vector B and C into X and Y direction respectively.

On resolution, vector gets distributed into its X-axis and Y-axis components.

Vector B has BCos25° as its X component and BSin25° as its Y component

Similarly, Vector C has CCos45° ac its X-axis component and CSin45° as its Y-axis component.

Now, the algebraic sum of the resolved parts of a series of forces in a particular direction is equal to the resolved part of their resultant in the same direction.

Σ along X-axis

= 5 + BCos25° - CCos45°

= 5 + 7(0.92) - 3(0.76)

= 5 + 6.44 - 2.28

Fx = 9.16 m/s

Σ along Y-axis

= BSin25° + CSin45°

= 7(0.38) + 3(0.64)

= 2.66 + 1.92

Fy = 4.58 m/s

The direction of the resultant vector is given by calculating Tan[tex]\alpha[/tex]

Here Tan[tex]\alpha[/tex] = [tex]\frac{P}{B\\}[/tex]

Tan[tex]\alpha[/tex] = [tex]\frac{4.58}{9.16}[/tex]

Tan[tex]\alpha[/tex] = 0.5

[tex]\alpha[/tex] = Tan⁻¹(0.5)

[tex]\alpha \\[/tex] = 29.5° with the X-axis

Magnitude of the resultant vector can be calculated by

= [tex]\sqrt{Fx^{2} +Fy^{2} +FxFyCos\alpha }[/tex]

= [tex]\sqrt{9.16^{2} +4.58^{2}+ 9.16*4.58*Cos29.5 }[/tex]

= 11.93 m/s

Therefore the resultant vector will be having 11.93 m/s as magnitude directing 29.5° from East to North.

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The electric field for 20 cm is 8.09 MN/C

Length of the straight filament = (20cm) (1m/100cm) = 0.2

Electric field for the straight conductor = [tex]E = \frac{2k_{e} \lambda}{r}[/tex]

E = [2(8.99 × 10^9 N·m^2/C^2)(90.0 × 10^-6 C/m)] / 0.2 m

E = 8.09 MN/C

The electric field is directed radially inward, toward the filament.

The electric field is a force produced by a charge near its surroundings. This force is exerted on other charges when brought in the vicinity of this field. SI unit of the electric field is N/C (Force/Charge).

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