A motorcycle can reach a speed of 60 mi/hr much faster than a minivan can

Answer:

temperature is the average kinetic energy of the particles of matter. the hotter something is the more kinetic energy it has.

Explanation:

Answer:

Explanation:

A force is a push or pull upon an object resulting from the object's interaction with another object.

Whenever there is an interaction between two objects, there is a force upon each of the objects.

Answer:

I would say the answer is Non-Biodegradable......eg, plastics, rubber, metals,etc.

HOPE THIS HELPS.

Answer:

A heat engine is a device that converts internal energy into work. Internal energy is increased by the addition of heat. The efficiency of a heat engine is a measurement of how efficiently it works. Efficiency compares the amount of useful energy extracted from a process to the total energy input. The heat engine will be more efficient if the percentage is higher.

Explanation:

In bipolar schemes, the voltage level oscillates between a positive and a negative value, and it may also remain at zero level between these two values.

Bipolar schemes are commonly used in electronic systems for digital data transmission or analog signal modulation. In these schemes, the voltage polarity alternates to represent binary digits or encode information.

This allows for efficient transmission and reliable detection of the signal. Bipolar schemes are widely employed in various communication technologies, such as Ethernet, RS-232, and T-carrier systems. They provide a balanced approach to signal representation, ensuring accurate and robust data communication. In bipolar schemes, the voltage oscillates between positive and negative values, with the potential of staying at zero in between.

These schemes are used in electronic systems for transmitting digital data or encoding analog signals. Bipolar schemes enable reliable signal detection and efficient transmission, making them prevalent in communication technologies like Ethernet and RS-232.

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Answer:

If clouds were made of cotton candy, I think rain would be soda.

Or liquified sugar.

:)

Answer:

Liquid Sugar

Explanation:

For an example, let's look at normal clouds. They're made of water vapor, and when they rain it's because the water vapor condenses and forms a droplet heavy enough that it falls out of the sky. In both sides of the equation, they're still made out of water. So, logically, cotton candy is made almost 100% with sugar, right? All that's happened is the sugar is heated and liquified and pushed through very small holes until they cluster together and form the fluffy treat you know today. Back to the leading question, though: "If clouds were made of cotton-candy, what is rain?". Rain is the liquid form of clouds (gas), and cotton candy is the (solid) form of itself. So in order for it to rain, it needs to liquefy itself. When melted at 367°F, sugar becomes a liquid, so in that case THAT is what cotton candy would rain if it were a cloud.

≧◡≦

Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!

Answer:

Uranus

Explanation:

it's uranus....

When stopped behind a vehicle, there are a few things that you should be able to see to ensure a safe and legal driving experience.

Firstly, you should be able to see the license plate of the vehicle in front of you. This is important in case you need to report any incidents or accidents to the authorities. Secondly, you should be able to see the brake lights of the vehicle in front of you. This allows you to know when the driver is braking and how quickly they are doing so, which can help you determine how much space you need to leave between your car and theirs. Thirdly, you should be able to see the rear tires of the vehicle in front of you. This helps you to position your vehicle properly, so that you can maintain a safe following distance.

In addition to these things, you should also be aware of any potential hazards that may be around you, such as pedestrians, cyclists, or other vehicles. By staying aware of your surroundings and following the proper safety precautions, you can help to ensure that you and those around you stay safe on the road.

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Answer:

It increases twice the original

Answer:

v = 1.5 m/s

Explanation:

Given that,

Distance covered by a rat, d = 1400 m

Time, t = 16 minutes = 960 s

We need to find the average speed of the rat. The speed of an object is given by :

\(v=\dfrac{d}{t}\\\\v=\dfrac{1400\ m}{960\ s}\\\\v=1.45\ m/s\)

or

v = 1.5 m/s

So, the average speed of the rat is 1.5 m/s.

Answer:

The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take reading. It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb.

Explanation:

Hope it is helpful....

Answer:

constriction is made in a clinical thermometer because it prevents the thermometric liquid from running back into the bulb.

The angular velocity of the turntable is 4.19 radians/second . The angular accelatation of the turntable is 8.38 radians/second².

The torque on the grammaphone record is 0.0419 Nm. The rotational kinetic energy is 0.0439 J. . The work done by the torque in 0.2 s is 0.00702 J.

The turntable has a uniform angular velocity of 40 rounds per minute. To convert this to radians per second, we can use the following conversion factors:

1 round = 2π radians (since there are 2π radians in a complete circle)

1 minute = 60 seconds

So, the angular velocity (ω) can be calculated as:

ω = 40 rounds/minute × (2π radians/round) × (1 minute/60 seconds)

ω ≈ 4.19 radians/second

The record accelerates uniformly to the angular velocity of the turntable in 0.5 seconds. Let's denote the angular acceleration as α. We can use the formula:

ω = ω₀ + αt

Plugging in the values, we get:

4.19 = 0 + α(0.5)

α = 4.19 / 0.5

α ≈ 8.38 radians/second²

The moment of inertia of the grammaphone record (I) is given as 5.0 x 10^(-3) kgm². We can use the formula:

τ = Iα

Plugging in the values, we get:

τ = (5.0 x 10^(-3)) x 8.38

τ ≈ 0.0419 Nm

The rotational kinetic energy (K) can be calculated using the formula:

K = 0.5 * I x ω²

Plugging in the values, we get:

K = 0.5 * (5.0 x 10^(-3)) * (4.19)²

K ≈ 0.0439 J

The work done (W) by the torque can be calculated using the formula:

W = τ * θ

Plugging in the values for α and t = 0.2s, we get:

θ ≈ 0.5 * 8.38 * (0.2)²

θ ≈ 0.1676 radians

Now, we can calculate the work done:

W = 0.0419 * 0.1676

W ≈ 0.00702 J

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Answer:

If the helicopter is not moving, then it is not being accelerated.

By second Newton's law we have that:

F = m*a

Force equals mass times acceleration.

Then if we do not have acceleration, we have:

F = m*a = m*0 = 0.

Then the total force must be zero.

So if the gravitational force (pulling down) is 115N, then the force of the propeller must be such that:

Total force = F - 115N = 0

F = 115N

The force of the propeller must be also of 115N, but in the opposite direction.

Heat is absorbed during activation of a heating pad as it converts electrical energy into thermal energy. As energy is absorbed, the surroundings cool down.

A heating pad is a device that generates heat to alleviate pain or discomfort in the body. It typically consists of a soft fabric covering and an electric heating element that is powered by electricity.

When activated, the heating pad converts electrical energy into thermal energy, which is then transferred to the body through the fabric cover.

Electrical energy is a form of energy that is generated by the movement of electrons through a conductor, such as a wire. It is a type of energy that is used to power many of the devices and appliances that we use in our daily lives, including heating pads.

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The correct answer is d) Activating a heating pad.  it absorbs electrical energy and converts it into heat energy, which is then transferred to the body part that the pad is applied to.

Electrical energy is a type of energy that results from the movement or flow of charged particles, typically electrons, through a conductor or electrical circuit. It is a form of energy that is used to power many different devices and machines, from simple household appliances like light bulbs and fans to more complex systems like computers and power grids.

Electrons are subatomic particles that are fundamental constituents of atoms and have a negative charge. They are one of the three primary particles that make up atoms, along with protons and neutrons.

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The velocity at impact will be (-10) m/s if all forces acting on the spacecraft (weight, drag, and thrust) are included.

To find the velocity at impact, first, we need to consider all the forces acting on the spacecraft (weight, drag, and thrust). Then, we can use these forces to find the net force and acceleration. Finally, we can calculate the impact velocity.

Step 1: Calculate the weight of the spacecraft:-
Weight = mass × gravitational acceleration
Weight = 2060 kg × 3.7 m/s² = 7618 N

Step 2: Calculate the net force acting on the spacecraft:-
Net force = thrust - drag - weight
Net force = 4810 N - 7500 N - 7618 N = -10308 N

Step 3: Calculate the acceleration of the spacecraft:-
Acceleration = net force/mass
Acceleration = -10308 N / 2060 kg = -5 m/s²

Step 4: Calculate the velocity at impact:-
We know that the initial velocity is 40 m/s, and the propellant burns for 10 seconds. We can use the equation of motion (v = u + at) to find the final velocity:-
Final velocity(v) = initial velocity(u) + acceleration(a) × time(t)
Final velocity = 40 m/s + (-5 m/s²) × 10 s = 40 m/s - 50 m/s = -10 m/s

Therefore, the velocity at impact will be -10 m/s (the negative sign indicates that the velocity is in the opposite direction to the initial velocity).

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Answer:

\(n = 1.563x {10}^{20} \)

The vertical forces cancel, so only the horizontal forces are included in the net force. If the right is positive and the left is negative, then

50 N + (-20 N) = 30 N

so the net force is (B) 30 N to the right.

Answer:

(B) 30 N to the right.

Explanation:

Explanation:What is centripetal acceleration?

Can an object accelerate if it's moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object—even if the object is maintaining a constant speed—still count as acceleration.

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant. You experience this acceleration yourself when you turn a corner in your car—if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction. The sharper the curve and the greater your speed, the more noticeable this acceleration will become. In this section we'll examine the direction and magnitude of that acceleration.

The figure below shows an object moving in a circular path at constant speed. The direction of the instantaneous velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure. We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration

a

c

a

c

​

a, start subscript, c, end subscript; centripetal means “toward the center” or “center seeking”.

Answer:

Conduction is a process in which transfer of heat takes place between objects by direct contact. Convection refers to the form of heat transfer in which energy transition occurs within the fluid. Radition alludes to the mechanism in which heat is transmitted without any physical contact between objects

The phenomenon you are describing is known as the photoelectric effect. The photoelectric effect occurs when light, in this case blue light, is incident on a metal surface and electrons are ejected from the surface.

According to the classical wave theory of light, increasing the photoelectric (brightness) of the blue light should result in the ejection of more electrons with greater energy. However, experimental observations do not support this prediction.

In reality, increasing the intensity of the blue light does not affect the energy of the ejected electrons. Instead, it increases the number or rate at which electrons are ejected from the metal surface. The kinetic energy of the ejected electrons depends solely on the frequency (or equivalently, the energy) of the incident photons, and not on the intensity of the light.

The photoelectric effect can be explained by considering light as composed of discrete particles called photons. Each photon transfers its energy to a single electron, and if the energy of the photon is sufficient to overcome the work function of the metal, an electron is ejected with a specific kinetic energy. Increasing the intensity of the light simply increases the number of photons, leading to more electrons being ejected but with the same energy per electron.

This phenomenon is consistent with the particle-like behavior of light and is a fundamental aspect of quantum mechanics.

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Answer:

F / m = a = G M / R^2            formula for gravitational attraction

a = ω^2 R   formula for centripetal force for an object with radius R

G M / R^2 = ω^2 R equating accelerations

ω = (G M / R^3)^1/2

ω = 2 pi f = 2 pi / P      for circular motion

P = 2 pi (R^3 / (G M))^1/2

R^3 / (G M) = (1.738E6)^3 / (6.67E-11 * 7.36E22)  = 1.07E6

P = 6.28 * 1034 sec = 6500 sec = 1.80 hrs

The mass of the rock with a kinetic energy of 113J and a speed of 6.2m/s is approximately 5.88 kilograms.

Kinetic energy is simply the energy a body possesses due to its motion;

It is expressed as;

K.E = 1/2 × m × v²

Given the data in the question;

To determine the mass of the rock, plug the given values into the Kinetic energy formular and solve for m.

K.E = 1/2 × m × v²

113kgm²/s² = 1/2 × m × ( 6.2m/s )²

113kgm²/s² = 1/2 × m × 38.44m²/s²

113kgm²/s² = m × 19.22m²/s²

m = 113kgm²/s² / 19.22m²/s²

m = 5.88kg

Therefore, the mass of the rock is 5.88 kilograms.

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Answer:

D. sweeper

Explanation:

i did the assignment and got it right

The player who tries to take the ball away from the offensive and give it to a midfielder to start an attack is called the sweeper.

A midfielder is an association football position. Midfielders are the gears that keep the defensive and offensive lines connected and moving smoothly.

The sweeper has simply become the defensive midfielder, sweeping up play in front of the center-backs instead of in front of the goalkeeper.

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The relationship between the amplitude of a wave and the amount of energy it produces, Energy increases as amplitude increases.

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The potential energy  and kinetic energy of the bowling ball are 2,205 J and 37.5 J respectively.

The bowling ball at the given position and speed possess gravitational potential energy and kinetic energy.

The potential energy  and kinetic energy of the bowling ball is calculated as follows;

P.E = mgh

where;

P.E =  (3 x 9.8 x 75 )

P.E = 2,205 J

The kinetic energy of the bowling ball is calculated as;

K.E = ¹/₂ mv²

where;

K.E = ¹/₂ ( 3 ) x (5²)

K.E = 37.5 J

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Answer:

D - Natural Phenomena

Answer:

D) Natural phenomena

Explanation:

science can't explain the others

The work done by the electric field between r2 and r1 is 449.55nJ.

To begin understanding the problem, we must be aware that the external work to move a charge from point a to b is denoted by the following equation:

Wab = 4Пε0qQ (1/rb - 1/ra)

Charge Q = -3.0nC (given data)

Charge q = 5.0nC

r1 = 10 cm = 0.1 m

r2 = 15 cm = 0.15m

Work done by the electric field between r1 and r2 is :

W₁₂ =  ∫F.dr, (definite integration from r1 to r2)

= KQq (-1/r2 + 1/r1)

W₁₂ = 9.1 × 10⁹ (-3 × 10⁻⁹ × 5 × 10⁻⁹) (-1/0.15 + 1/0.1)J

W₁₂ = -135 × 10⁻⁹ (-6.67 + 10)J

W₁₂ = 449.55 × 10⁻⁹ J

W₁₂ = 449.55nJ

Therefore, the work done by the electric field between r2 and r1 is 449.55nJ.

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Answer:

the answer is B

Explanation:

we assume that all of these springs have tha same k , the spring constant

elastic energy for the initial system = Ep1=  \(\frac{kd^{2} }{2}\)

for the new changed system , the spring constant = k1+k2 = k+k = 2k  , but the displacement is also reduced to 0.5 d

so Ep2 = \(\frac{2k(0.5d)^{2} }{2} = \frac{kd^2}{4}\)

so the new total Ep stored in the new system is 1/2Ep

hope it helps

Harlow Shapley used Cepheid variables in globular clusters to estimate the extent of the Milky Way and its center, which he found to be in the direction of the constellation Sagittarius.

Harlow Shapley used a particular type of star known as Cepheid variables as signposts to determine the extent of the Milky Way galaxy and the location of its center. Cepheid variables are stars that pulsate in a regular pattern, with the brightness of the star directly correlated to its pulsation period.

Shapley observed these stars in globular clusters, which are dense groupings of stars in the outer reaches of the galaxy. By measuring the period of pulsation of Cepheid variables in these clusters, he was able to estimate the distance to them. He found that these clusters were distributed around the galaxy in a spherical shape, indicating that the Milky Way was much larger than previously thought.

Shapley also observed the distribution of these clusters in the night sky and found that they were more concentrated in one direction, towards the constellation Sagittarius. This led him to conclude that the center of the Milky Way was in that direction, and he was able to estimate the distance to the galactic center based on the distribution of these clusters.

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