the universe is thought to be on the order of ________ billion years old a) 0.37. b) 3.7. c) 13.7. d) 137. e) 1370.

Answer:

\(\boxed{Final\:velocity\:(v)\:=\:1600m/s}\)

Explanation:

v = u + at

The body accelerates from rest, So initial velocity would be zero.

v = 0 + 200×8

v = 0 + 1600

v = 1600m/s

Hope it helps!<3

To determine the greatest distance you can be from the base camp at the end of the third displacement, regardless of direction, we need more specific information about the magnitudes and directions of the displacements.

Displacement is a vector quantity that has both magnitude and direction. The distance covered during multiple displacements depends on the individual magnitudes and directions of each displacement. Without specific values, it is not possible to determine the exact greatest distance from the base camp.

If you provide the magnitudes and directions of the three displacements, I can help you calculate the total distance and determine the maximum possible distance from the base camp at the end of the third displacement.

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The speed of the electron when it reaches the center of the ring (a uniformly charged thin ring has radius 13.5 cm and total charge 21.5 nc . an electron is placed on the ring's axis a distance 27.0 cm from the center of the ring and is constrained to stay on the axis of the ring. the electron is then released from rest. you may want to review) is 1.73 x 10⁷ m/s.

The electron will be drawn to the center of the ring, where there is no net force. The electron, however, has some kinetic energy and, due to inertia, crosses the center, but on the other side, it is further attracted to the center of the ring.

Potential V₀ = kQ/(r² + z²) \(^{1/2}\)

Potential at center of ring:

V = kQ/r

Where:

r = radius = 13.5 cm = 0.135 m

Q = the charge = 23.0 nC = 2.3 x 10⁻⁸C

z = the distance = 27.0 cm = 0.27 m.

Then by theorem of change of kinetic energy:

mv²/2 = e(V - V₀)

Where:

m =  mass of electron

e = charge of electron

Hence,

v = [2e(V - V₀)/m]\(^{1/2}\)

V = (9 x 10⁹) (2.3 x 10⁻⁸)/0.315

= 657.14 V

V₀ = (9 x 10⁹) (2.3 x 10⁻⁸)/(0.315² + 0.27²)\(^{1/2}\)

= 446.38 v

So, the speed of the electron when it reaches the center of the ring:

v = [2 x (1.6 x 10¹⁹) (657.14 - 446.38)/(9.11 x 10³¹}\(^{1/2}\)

= 1.73 x 10⁷ m/s

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Answer:

Option C

Explanation:

The answer is option C or "they convert chemical energy from gasoline into kinetic energy." Electric motors usually require a power source for example a car, you put gasoline in that car which is converted into kinetic energy which allows the motor to operate and run, (enabling you to drive the car) the kinetic energy is then used into you run out of gasoline.

Hope this helps.

The first two statements are true. The last two statements are false.

1. At the critical maximum nucleate boiling heat flux, a sudden temperature jump can occur in a heating element. This phenomenon happens when the heat flux is at its maximum and the liquid near the heating surface transitions to a highly active boiling state. The sudden temperature jump is caused by the intense vapor generation and rapid heat transfer processes occurring at the surface.

2. Film boiling is a stage of boiling where a vapor film forms between the heater surface and the liquid. This vapor film acts as an insulating layer, leading to low heat transfer rates in the film boiling region. The vapor film reduces the contact between the heater surface and the liquid, hindering efficient heat transfer and resulting in lower overall heat transfer rates compared to other boiling regimes.

3. Condensation is the process in which a vapor or gas transforms into a liquid state. When condensation occurs, latent heat is released. However, contrary to the statement, the release of latent heat actually acts to heat the surroundings, not cool the air. This is because latent heat represents the energy released during the phase transition from gas to liquid, and it is transferred to the surrounding environment.

4. In pool boiling problems, the excess temperature is not equal to Ts - Too as stated. Instead, it is calculated as Ts - Tsub. Ts represents the surface temperature, and Tsub represents the saturation temperature of the liquid. The excess temperature is the temperature difference between the surface and the saturation temperature, which is used to characterize the heat transfer performance in pool boiling experiments or analyses.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 7 × 5

We have the final answer as

Hope this helps you

Well spring magma and  groundwater must be interacting beneath the surface which is why they geyser is erupting.

A scientist observes a geyser erupting. The two objects that must be interacting beneath the surface are well spring magma and groundwater.

When a geyser is erupting, it involves the interaction of groundwater and well spring magma. The groundwater seeps into the earth's crust, where it gets heated by the well spring magma. Once the water reaches a certain temperature, it turns into steam and expands, causing pressure to build up. Eventually, this pressure forces the heated water and steam to the surface, resulting in the eruption of the geyser.

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Answer:

increase

decrease

Explanation:

using formula

Vt=mg/6πηr

so if m increases V increases

r is the denominator so if r increases V decreases

Answer:

5 m/s is the answer so yeah

Answer:

A: Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that’s above the ball. Slip an end of the string through the hole, and tie a knot. This is your pendulum. Hold the loose end of the string still with one hand. With the other hand, raise the ball in an arc so that it’s almost level with the hand holding the string. With the string taut, let the ball go. What do you observe?

Mine was swaying perfectly fine. after a little bit it gradually started swinging slower until stopped.

B: Why did the pendulum stop swinging? Where did the energy go?

gravity was pulling it towards the ground, however the weight and momentum of the ball helped it keep swinging for a good while.

C: Scientists have organized all forms of energy into two types—kinetic and potential. Kinetic [THE ENERGY OF MOTION IN A BODY] energy is the energy of motion, and potential energy [THE STORED ENERGY IN AN OBJECT] is stored energy. At the top of its swing, does the pendulum have kinetic or potential energy?

when its at the very top of the swing it does have a very small amount of time until it starts going back down again but during that time it is potential energy

D: At the bottom of its swing, does the pendulum have kinetic or potential energy?

the pendulum still has kinetic energy when it is the closest to the ground since it is still swinging

E: Think about the process of raising the pendulum to one side and letting it go. For this event, create a list of each form of energy associated with the pendulum as it cycles.

when its in my hand: potential energy

when it starts swinging: kinetic energy

when its going upwards: kinetic energy

when it stops swinging: potential energy

F: How could you give the pendulum more energy?

one way you could possibly make it have more energy is if you make the string longer

G: Now raise the pendulum and let it hit a metal lid or pan. When the ball strikes the lid, what forms of energy can you identify?

I could hear sound energy when the two made contact but for the most part it was kinetic energy

Answer:

I could hear sound energy when the two made contact but for the most part it was kinetic energy

Explanation:

Answer:

Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid

Equipment such as chafing dishes, steam tables and heated cabinets designed to hold foods hot should at least keep food temperatures at 140°F (60°C) or hotter. The correct answer is 140°F (60°C).

Food safety is a crucial aspect of any foodservice operation. Keeping hot correct food temperatures is essential in preventing the growth of harmful bacteria. The temperature range of 140°F (60°C) to 165°F (74°C) is considered the "danger zone" for hot foods, as this range allows bacteria to grow rapidly.

Therefore, equipment such as chafing dishes, steam tables, and heated cabinets designed to hold hot foods should maintain a minimum temperature of 140°F (60°C) or hotter.

This ensures that the food remains safe to eat and reduces the risk of foodborne illness. It is also important to check the temperature of the food regularly using a thermometer to ensure that it is being held at the correct temperature.

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Answer -:

rate of charge of angular displacement of a circular motion is called angular velocity it is denoted by omega ( ω ) . if particle trave△θ angluar displacement time then

\( \bold {average \: velocity \: } \: \bold{ \frac{angular \: displacement \: }{time} }\)

or

\( \omega \frac{ \triangle \theta}{ \triangle \: t} \)

if t is very small then instantaneous

\( \omega = \lim \: \frac{ \triangle \theta}{ \triangle \: t \: } \)

Answer:

Sometimes you can see light from the Sun passing through clouds and the sunbeams appear as straight lines. After light has been reflected off an object, such as a tree or a book, it still travels in straight lines, but in a new direction.

Explanation:

Scientists classify everything in the universe as either matter or energy.

Matter refers to anything that has mass and takes up space, such as atoms, molecules, and objects made up of these particles. Energy, on the other hand, refers to the ability to do work or to cause changes in matter. Energy can take various forms, including kinetic energy, potential energy, thermal energy, electromagnetic radiation, and many others.

The distinction between matter and energy is a fundamental concept in physics and has important implications for our understanding of the physical world and the behavior of various systems, from subatomic particles to the entire universe.

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The complete question is :

Fill in the blanks:

Scientists classify everything in the universe as either______

Answer:

0.39166666666

Explanation:

Answer:

Explanation:

The series circuit with two light bulbs will illuminate more than the series with one light bulb because two light bulbs will have more energy as compared to one light bulb.

Answer:

(a)   m1/m2 = 1/3

(b)   a = 0.75m/s^2

Explanation:

You have the following relations:

For an object of mass m1:

\(F_1=m_1a_1=m_1(3.00m/s^2)\)       (1)

For an object of mass m2:

\(F_2=m_2a_2=m_2(1.00m/s^2)\)        (2)

(a) In order to calculate the quotient m1/m2 you use the fact that F1=F2=F.

You divide the equation (1) into the equation (2):

\(\frac{F_1}{F_2}=\frac{F}{F}=1=\frac{m_1(3.00m/s^2)}{m_2(1.00m/s^2)}\\\\1=3.00\frac{m_1}{m_2}\\\\\frac{m_1}{m_2}=\frac{1}{3}\)

The quotient m1/m2 = 1/3

(b) For the case of a mass of m1+m2, you have:

\(F=(m_1+m_2)a\)         (3)

To find the values of the acceleration you divide the previous equation into the equation (2):

\(\frac{F}{F}=1=\frac{(m_1+m_2)a}{m_2(1.00)}\\\\1=\frac{m_1}{m_2}a+\frac{m_2}{m_2}a=\frac{1}{3}a+a\\\\1=\frac{4}{3}a\\\\a=\frac{3}{4}\)

The new acceleratio for an object of mass m1+m2 is 3/4m/s^2 = 0.75m/s^2

The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.

Answer:

Gravity is the force that keeps everything on the ground instead of it floaating around!

Explanation:

Without gravity, you would be floating round in your house dodging floating objects.

Hope this brings you down to earth!

Have an amazing day!

PLEASE RATE AND MARK BRAINLIEST!! :)

The speed of the mass when the spring returns to its relaxed length of 15 cm is 0.632 m/s.

1. First, we need to find the spring constant (k) and the mass (m). We are given k = 0.5 N/m and m = 20 g (which we need to convert to kg): m = 20/1000 = 0.02 kg.

2. Next, we need to determine the elongation (x) of the spring. We are given the initial length (25 cm) and the relaxed length (15 cm):

x = 25 cm - 15 cm = 10 cm (which we need to convert to meters):

x = 10/100 = 0.1 m.

3. Now, we can calculate the potential energy (PE) stored in the spring when it's stretched: PE = (1/2) * k * x^2 = (1/2) * 0.5 N/m * (0.1 m)^2 = 0.0025 J.

4. When the spring returns to its relaxed length, the potential energy will be converted into kinetic energy (KE): KE = (1/2) * m * v^2.

5. Since PE = KE, we can solve for the velocity (v) of the mass: 0.0025 J = (1/2) * 0.02 kg * v^2.

6. Solve for v: v^2 = (0.0025 J * 2) / 0.02 kg

v^2 = 0.25

v = √0.25 = 0.5 m/s.

The speed of the mass when the spring returns to its relaxed length of 15 cm is 0.632 m/s.

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Answer:

Density of the mixture = 855.56kgm-3

Explanation:

Density = Mass / Volume

Volume of Liquid X = 0.5m³

Density of Liquid X = 900kgm-3

Mass of Liquid X = Density × Volume

= 900kgm-3 × 0.5m³ = 450kg

Volume of Liquid Y = 0.4m³

Density of Liquid Y = 800kgm-3

Mass of Liquid Y = Density × Volume

= 800kgm-3 × 0.4m³= 320kg

As X and Y are mixed, we add their masses and volumes together:

Mass = 770kg

Volume = 0.9m³

Now we can find the density of the mixture:

Density = 770kg / 0.9m³ = 855.56kgm-3 (rounded to the 2nd decimal)

The linear velocity is v=0.810 m ×15.0 rad/s = 12.15 m/s.

Velocity is a vector quantity that measured the rate and direction of the change in an object position it is typically excelled in unit of meter per second velocity is equal to the distance traveled divided by the time it take to travel the distance velocity is also related to acceleration which is the rate of change of velocity.

(a) The linear velocity of the disc at the moment of release can be found by using the equation v=rω, where r is the radius of the circular arc, and ω is the angular velocity. Thus, the linear velocity is v=0.810 m ×15.0 rad/s = 12.15 m/s.

(b) The tangential acceleration of the disc at the moment of release can be found by using the equation at = rα, where r is the radius of the circular arc, and α is the angular acceleration. Since the angular acceleration is equal to the change in angular velocity divided by the time, the tangential acceleration is at = 0.810 m ×(15.0 rad/s)/(0.270 s) = \(55.9 m/s^{2}\)

(c) The centripetal acceleration of the disc at the moment of release can be found by using the equation ac = \(v^{2}\)/r, where v is the linear velocity, and r is the radius of the circular arc. Thus, the centripetal acceleration is ac = \((12.15 m/s^{2})\)/(0.810 m) = \(151.0 m/s^{2}\)

(d) The total acceleration of the disc at the moment of release can be found by adding the tangential and centripetal accelerations, thus a tot = at + ac = 55.9 \(m/s^{2}\) + 151.0 \(m/s^{2}\) = 206.9 \(m/s^{2}\)

(e) The angle of the total acceleration at the moment of release can be found by using the equation θ = \(tan^{-1}\)(at/ac), where at is the tangential acceleration, and ac is the centripetal acceleration. Thus, the angle of the total acceleration is θ = \(tan^{-1}\)(55.9 m/\(s^{2}\)/151.0 m/\(s^{2}\)) = 22.4°.

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Answer:

I think it is television and radio wave

the force required of the quadriceps to maintain the leg in a horizontal position is 896 N.

In order to maintain the leg in a horizontal position, the force exerted by the quadriceps must be equal and opposite to the force exerted by the weight on the ankle.

To determine the force required of the quadriceps, we can use the principles of torque and moment arm.

First, we need to calculate the moment arm of the weight. The moment arm is the perpendicular distance between the weight and the joint center.

The moment arm of the weight = 28 cm

Next, we need to calculate the moment arm of the quadriceps. The moment arm of the quadriceps is the perpendicular distance between the line of action of the quadriceps force and the joint center.

We know that the quadriceps tendon attaches to the tibia at a 30 degree angle 5 cm from the joint center. Using trigonometry, we can calculate the moment arm of the quadriceps:

Sin 30 = opposite/hypotenuse
Opposite = Sin 30 x hypotenuse
Opposite = 0.5 x 5
Opposite = 2.5 cm

Therefore, the moment arm of the quadriceps = 2.5 cm

Now we can use the equation for torque:

Torque = force x moment arm

We know that the torque of the weight = torque of the quadriceps (since the leg is in equilibrium).

Torque of the weight = 80 N x 0.28 m = 22.4 Nm

Torque of the quadriceps = force x 0.025 m (converting 2.5 cm to meters)

Setting the torques equal to each other and solving for force:

Force x 0.025 m = 22.4 Nm

Force = 22.4 Nm / 0.025 m

Force = 896 N

Therefore, the force required of the quadriceps to maintain the leg in a horizontal position is 896 N.

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Then force of attraction between the cation and anion can be calculated using Coulomb's law: Force = -7.592 x 10^-9 N.

The attraction of visiting a new place is the opportunity to explore, discover and learn something new. Visiting a new place often involves immersing oneself in new cultures and customs, experiencing different foods and cuisines, and taking in breathtaking views. By exploring a new place, one can gain a greater understanding of the past and present, and appreciate the diversity of people, cultures, and landscapes. Travelling to a new place also offers the chance to make new friends, learn new skills and create lasting memories. Visiting a new place can be a thrilling, eye-opening experience, and the memories created will last forever.

Then force of attraction betweena the cation and anion can be calculated using Coulomb's law:

Force = k * (Q1 * Q2) / r2

where k is Coulomb's constant (8.99 x 10^9 N*m²/C²), Q1 and Q2 are the charges of the cation and anion (2 and -2 in this case), and r is the distance between the two particles (2.5 nm).

Force = 8.99 x 10^9 N*m²/C² * (2 * -2) / (2.5 x 10^-9 m)²

Force = -7.592 x 10^-9 N

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Then force of attraction between the cation and anion can be calculated using Coulomb's law: Force = \(-7.592 \times 10^{-9} N.\)

The attraction of visiting a new place is the opportunity to explore, discover and learn something new. Visiting a new place often involves immersing oneself in new cultures and customs, experiencing different foods and cuisines, and taking in breathtaking views. By exploring a new place, one can gain a greater understanding of the past and present, and appreciate the diversity of people, cultures, and landscapes. Travelling to a new place also offers the chance to make new friends, learn new skills and create lasting memories. Visiting a new place can be a thrilling, eye-opening experience, and the memories created will last forever.

Then force of attraction between a the cation and anion can be calculated using Coulomb's law:

\(Force = k \times (Q1 \times Q2) / r^2\)

where k is Coulomb's constant (\(8.99 \times 10^9 N\times m^2/C^2)\), Q1 and Q2 are the charges of the cation and anion (2 and -2 in this case), and r is the distance between the two particles (2.5 nm).

\(Force = 8.99 \times 10^9 N\times m^2/C^2 \times (2 \times -2) / (2.5 \times 10^{-9} m)^2\\Force = -7.592 x 10^{-9} N\)

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Your friend also bounced back with a velocity of 3.75 m/s.

The final velocity of your friend after the collision is calculated by applying the principle of conservation of linear momentum.

m₁u₁  +  m₂u₂  = m₁v₁   +   m₂v₂

where;

( 156 x 3 )  +  (210)(-1.3) =  ( 156)(-3.8)  +  210v₂

195 = -592.8  + 210v₂

210v₂ = 787.8

v₂ = 787.8 / 210

v₂ = 3.75 m/s

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Answer:

Exactly 27 m/s

Explanation:

P=mv

P(cannon)=2.7*1.7

P(cannon)=4.59 kg*m/s

P(cannon)=P(tshirt)

4.59=0.17*v

v=27 m/s

Answer:

the thermal energy absorbed is 46,893 J

Explanation:

Given;

mass of the water, m = 145 g = 0.145 kg

initial temperature of the water,  t₁ = 23 ⁰C

final temperature of the water, t₂ = 100 ⁰C

specific heat capacity of water, c = 4,200 J/kg.⁰C

The thermal energy absorbed is calculated as;

H = mcΔt

H = 0.145 x 4,200 x (100 - 23)

H = 46,893J

Therefore, the thermal energy absorbed is 46,893J