What causes the tail of a comet to become visible?.

The fastest climbers are not necessarily the ones who developed the most power because power is not determined by the speed of an object.

When we talk mathematically the power in an object is defined as the work done by the body per unit time.

The fastest climber necessary for the ones who developed the most power because a greater velocity or a greater speed is not a parameter for calculating the power in an object or in our body.

The power is only calculated on the basis of the work done by a climber.

To know more about power, visit,

https://brainly.com/question/1634438

#SPJ4

The plane travels a distance of 325 miles if the airplane travels for 2.5 hours at an average speed of 130 miles per hour. Using the distance formula (d = rt), we can calculate the distance.

To find the distance traveled by the airplane, we can use the distance formula, which is represented as d = rt. In this formula, "d" represents the distance, "r" represents the rate or speed at which the object is traveling, and "t" represents the time taken for the travel.

Given that the airplane travels for 2.5 hours at an average rate of 130 miles per hour, we can substitute these values into the formula. The rate of the airplane is 130 miles per hour, and the time taken is 2.5 hours.

Using the formula, we can calculate the distance traveled as follows:

d = rt

d = 130 mph × 2.5 hours

Multiplying the rate (130 mph) by the time (2.5 hours) gives us:

d = 325 miles

Therefore, the airplane travels a distance of 325 miles during the 2.5 hours of travel at an average rate of 130 miles per hour.

To know more about distance here https://brainly.com/question/30395212

#SPJ4

Answer:

i think it is car B because  the greater the speed, the greater the drag force acting on the vehicle

Explanation:

While both universal gravitation and electric force equations involve the inverse square law and a constant, they differ in the nature of the objects involved and the type of force that is generated.

A Venn diagram is a useful tool to compare and contrast two concepts, so let's use it to analyze universal gravitation and electric force equations.
Universal gravitation equation: \(F=G(m1m2/r^2)\)
Electric force equation: \(F=k(q1q2/r^2)\)
In terms of similarities, both equations involve the inverse square law, meaning that the force decreases as the distance between the two objects increases. Additionally, both equations involve a constant, G or k, which determines the strength of the force.
In terms of differences, the universal gravitation equation involves two masses (m1 and m2), while the electric force equation involves two charges (q1 and q2). Gravitation is an attractive force between two masses, while electric force can be attractive or repulsive depending on the charges of the objects.

To learn more about electric force click here https://brainly.com/question/31696602

#SPJ11

Answer:

0.33 Hz

Explanation:

The frequency (f) is the rate of occurrence while the Period (T) is the time of occurrence. These two quantities are reciprocal to one another. The frequency refers to the number of cycles per second.

Hence, the equation is:

f = 1/T or T=1/f

The period in this question is 3seconds i.e. 1 cycle every 3 seconds, hence, the frequency will be:

f = 1/3

= 0.33333333

Approximately to 2 d.p = 0.33Hz

Therefore, the frequency of the water waves striking the dock is 0.33Hz

The energy released in the β⁻ decay of ⁹⁹Mo is zero.

To calculate the energy released in the β⁻ decay of ⁹⁹Mo, we need to determine the change in mass (Δm) and then use the equation E = Δm * c², where c is the speed of light.

In this case: mass of ⁹⁹Mo (m) = 98.907711 u

Mass of ⁹⁹Mo in kg = 98.907711 u * (1.66 × 10⁻²⁷ kg/u) ≈ 1.64 × 10⁻²⁵ kg

Next, we determine the mass of the decay product, which is ⁹⁹Tc (technetium). The mass of ⁹⁹Tc is approximately 99 u.

Mass of ⁹⁹Tc in kg ≈ 99 u * (1.66 × 10⁻²⁷ kg/u) ≈ 1.64 × 10⁻²⁵ kg

Now we can calculate the change in mass:

Δm = (Mass of ⁹⁹Mo in kg) - (Mass of ⁹⁹Tc in kg)

Δm ≈ (1.64 × 10⁻²⁵ kg) - (1.64 × 10⁻²⁵ kg) = 0

Since Δm is zero, it means that there is no change in mass during the β⁻ decay of ⁹⁹Mo.

Finally, we can calculate the energy released:

E = Δm * c² = 0 * (3.00 × 10⁸ m/s)² = 0

Learn more about β⁻ decay here:

https://brainly.com/question/27770519

#SPJ11

A device that sends out sound waves to detect objects is called sonar device.

What are sound waves?

Sound waves are vibrations of air molecules that propagate through a medium, such as air, water, or solid materials. Sound waves are created when a force, such as a vibrating object, causes particles in the medium to vibrate. The vibrations cause the particles to move in an alternating pattern, creating a wave. The frequency of the wave determines the pitch of the sound. The amplitude of the wave determines the loudness.

Sonar stands for Sound Navigation and Ranging. It is a device that sends out sound waves and measures their echo off objects in the environment to detect their position, size, shape, and other characteristics. Sonar is used for a variety of applications, such as navigation, tracking objects, and detecting underwater obstacles.

Therefore, sonar device is the correct answer.

To learn more about sound waves the link

https://brainly.com/question/21995826

#SPJ1

Answer:

V = (S2 - S1) / t

V = 8 m / 1 s = 8 meters /second

The distance between the two planes 30 minutes after the second plane leaves is approximately 525.1 miles (rounded to the nearest tenth of a mile).

he distance between the two planes 30 minutes after the second plane leaves can be calculated using the concept of vector addition. We can break down the velocities of both planes into their respective components. The first plane travels solely west, so its velocity vector would be [550 mi/h, 0]. The second plane travels 20 degrees west of north, so its velocity vector would be [-575 mi/h * sin(20°), 575 mi/h * cos(20°)]. To calculate the total displacement, we multiply the velocity vectors by the time of 30 minutes (0.5 hours) and add them together. Then we calculate the magnitude of the resulting displacement vector.

To know more about distance, visit:

https://brainly.com/question/7942332

#SPJ11

A car goes through a circular highway ramp while maintaining constant speed. The correct statement is the velocity of the car is zero.

This is defined as the rate of change of distance with time and is a vector quantity which measures both the rate and the direction of the motion.

A car maintaining constant speed means that distance covered is also 0m and the formula for velocity is distance / time.

This therefore means that velocity = 0m / 5s where time can be any digit.

This will result in the velocity being zero which is therefore the reason why it was chosen as the correct choice.

Read more about Velocity here https://brainly.com/question/6504879

#SPJ1

Answer:

Newton's first law

Explanation:

it says that an object will continue to be at rest or keep moving till any external for is applied to it to make it move or stop respectively.

The mutual inductance (M) in a two-coil system depends on the number of turns in each coil (N₁ and N₂), the permeability of the medium between the coils (µ), and the geometry of the coils.

Mutual inductance is a measure of the ability of one coil to induce an electromotive force (emf) in the other coil when a current changes in one of them. It depends on several factors.

First, the number of turns in each coil plays a role. The greater the number of turns, the stronger the magnetic field produced by the coil, resulting in a higher mutual inductance.

Second, the permeability of the medium between the coils is important. The permeability determines how easily magnetic flux lines pass through the medium. A higher permeability leads to stronger coupling between the coils and, consequently, higher mutual inductance.

Lastly, the physical arrangement and geometry of the coils affect the mutual inductance. The proximity and alignment of the coils influence the amount of magnetic flux linking them, thereby impacting the mutual inductance.

Learn more about mutual inductance here:

https://brainly.com/question/28585496

#SPJ11

Correct option is C, Centripetal force remains constant.

Centripetal Force -

Any force that changes the direction of motion toward the center of a circular motion is known as a centripetal force. The part of the force that produces the centripetal force is the part that is perpendicular to the velocity.

A net force that keeps an object moving in a circular motion is known as a centripetal force.

Centripetal force has the formula =mv2r. The newton or kgms2 is the measure of force.

A centripetal force is applied to any item travelling in a circle (or along a circular path). In other words, the object is being physically pushed or pulled in the direction of the circle's center. This is the necessary centripetal force.

To learn more about Centripetal force from given link

https://brainly.com/question/20905151

#SPJ4

Answer:

Here is the solution hope it helps:)

Answer:

280v

Explanation:

Momentum is a quantity that we can say is typically conserved in collisions.

Momentum is the quantity that that we see typically conserve in the collision,therefore the correct answer is the option A

It is the type of collision in which the total momentum  as well as the kinetic energy on the system is conserved .The momentum before the collision is equal to the momentum after the collision in other words one can say in the elastic collision momentum of the quantity is conserved.

In the inelastic collision the momentum is conserved but the kinetic energy of the quantity is not conserved.

Momentum of a quantity is conserved irrespective of the type of collision  whether it will be elastic collision or inelastic collision the momentum of the quantity will always be conserved.

Hence,we can say that momentum is the quantity that is conserved in collision,The correct answer for the given problem is option A.

Learn more about the collision and from here

https://brainly.com/question/2356330

#SPJ2

Answer:

59.8 m/s

Explanation:

vf = vo + at

   = 50 m/s + 9.81 m/s^2  (1 s) = 59.8 m/s

At one instant an object in free fall is moving downward at 50 m/s. one second later its speed would be 59.81 meters/second because under the free fall motion the only acting force is the gravitational force.

There are three equations of motion given by  Newton

The first equation is given as follows

v = u + at

the second equation is given as follows

S = ut + 1/2×a×t²

the third equation is given as follows

v² - u² = 2×a×s

As given in the problem at one instant an object in free fall is moving downward at 50 m/s and we have to find out the speed after 1 second,

By using the first equation of motion,

v = u + at

v = 50 + 9.81 ×1

v = 59.81 meters/second

Thus, the speed of the falling stone after one second would be 59.81 meters/second

Learn more about equations of motion from here

brainly.com/question/5955789

#SPJ2

The focal points of a circular ellipse are placed at the center of the circle.

A circular ellipse is a special case of an ellipse where the semi-major and semi-minor axes are equal, resulting in a perfect circle. In an ellipse, the two focal points are located on the major axis, each at a distance of c from the center, where c is determined by the equation c^2 = a^2 - b^2, where a is the length of the semi-major axis and b is the length of the semi-minor axis.

In the case of a circle, both a and b are equal, which means that c^2 = 0. Hence, c = 0. This implies that the focal points are located at the center of the circle.

Therefore, for a circular ellipse, the two focal points coincide at the center of the ellipse.

Learn more about circular ellipse here.

https://brainly.com/questions/16612332

#SPJ11

Answer: Its nuclear fusion

Explanation:

Answer:

Pretty sure it's Radiation.

To achieve total internal reflection, the minimum refractive index of the plastic must be at least 0.869 when a ray of light is incident at an angle of 61 degrees on the center of one side of the plastic slab in air.

The minimum refractive index of the plastic can be found , we need to consider the conditions for total internal reflection.

Total internal reflection occurs when the angle of incidence is greater than the critical angle, which is the angle at which the refracted ray is at a 90-degree angle to the normal.

In this scenario, the ray of light is incident on the plastic at an angle of 61 degrees. We can use Snell's law to relate the angle of incidence to the angle of refraction:

n1 * sin(angle of incidence) = n2 * sin(angle of refraction)

Here, n1 is the refractive index of air (approximately 1), and n2 is the refractive index of the plastic.

Since we want the light to be totally internally reflected, the angle of refraction will be 90 degrees. Thus, we have:

1 * sin(61 degrees) = n2 * sin(90 degrees)

Rearranging the equation, we get:

n2 = sin(61 degrees) / sin(90 degrees)

Calculating this expression, we find that n2 is approximately 0.869.

Therefore, the minimum refractive index of the plastic should be at least 0.869 to ensure total internal reflection in this scenario.

To know more about total internal reflection refer here:

https://brainly.com/question/14057071#

#SPJ11

Complete question:

A ray of light is incident on a square slab of transparent plastic in air. It strikes the center of one side at an angle of 61 degrees. Find the minimum refractive index of the plastic if the light is to be totally internally reflected.

The force acting on the ball rolling down the hill is 10578N.

Force in physics is a physical quantity that denotes ability to push, pull, twist or accelerate a body. The force acting on a body can be calculated using the following expression;

Force = mass × acceleration

According to this question, a ball has a mass of 3,526 grams and is rolling down a hill at 3 m/s². The force acting on the ball can be calculated as follows:

Force = 3526 × 3

Force = 10,578N

Therefore, 10578N is the force acting on the ball.

Learn more about force at: https://brainly.com/question/28875770

#SPJ1

Answer:

50kg

Explanation:

It is due to the fact that mass doesn't not change despite the change in gravity

Answer:

50 kg

Explanation:

Mass does not change with location

The mass of the object attached to the spring is approximately 0.119 kg.

To determine the mass of the attached object using the spring, we can utilize Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Hooke's Law can be expressed as:

F = k * x

Where:

F is the force exerted by the spring,

k is the spring constant, and

x is the displacement of the spring from its equilibrium position.

The frequency of the spring's motion (f) can be related to the mass (m) and the spring constant (k) using the equation:

f = (1 / (2π)) * √(k / m)

Rearranging this equation, we can solve for the mass:

m = (k / (4π² * f²))

Given:

Spring constant (k) = 3 N/m

Frequency (f) = 0.8 Hz

Substituting these values into the equation, we get:

m = (3 N/m) / (4π² * (0.8 Hz)²)

Calculating this expression:

m ≈ 0.119 kg

Therefore, the mass of the object attached to the spring is approximately 0.119 kg.

To know more about equilibrium position visit:

https://brainly.com/question/30229309

#SPJ11

The mass attached to the spring is approximately 0.238 kg.

To find the mass attached to the spring, we can use the formula for the angular frequency (ω) of a mass-spring system:

ω = √(k / m),

where ω is the angular frequency, k is the spring constant, and m is the mass.

Given:

k = 3 N/m (spring constant),

f = 0.8 Hz (frequency).

First, let's convert the frequency from Hz to radians per second (rad/s):

ω = 2πf = 2π(0.8) ≈ 5.03 rad/s.

Now, we can solve the formula for m:

ω = √(k / m),

m = k / ω^2,

m = 3 N/m / (5.03 rad/s)^2.

Calculating the value:

m ≈ 3 N/m / (5.03 rad/s)^2 ≈ 0.238 kg.

Therefore, the mass attached to the spring is approximately 0.238 kg.

To know more about frequency, visit:

https://brainly.com/question/29739263

#SPJ11

Answer:

F = m g / 4,  F = 12250 N

Explanation:

For this exercise we must use the rotational equilibrium relation

          ∑τ = 0

let's set a reference system on the wheel where the bus is turning and that the anti-clockwise rotations have been positive

          -2F x_string + W x_bus = 0

          x_bus =\frac{l}{2} cos 45

          x_string = l cos 45

where F is the force on each wheel and W the weight of the bus ,, we assume that the center of mass is in the middle and x_bus is the perpendicular distance from the center of mass to the turning point.

             2F l cos 45 = W \(\frac{l}{2}\)  cos 45

             F = m g / 4

to finish the calculation we must assume a mass for the bus m = 5000 kg

             F = 5000 9.8 / 4

              F = 12250 N

Answer:

It is a gene!!

Explanation:

It is because RNA is referred to as a gene. Genes are contained in chromosones.

Answer:

The light traveling in any one direction in a straight line is called a ray of light. A group of light rays given out from a source is called a beam of light.

Explanation:

Candle and electric bulbs. The rays coming out from the candle and electric bulb is divergent beam of light.A beam of light is made up of bundles of closely spaced parallel rays.

please give me brainiest

Answer:

The light going in any one course orderly is known as a beam of light. A light beam gathering from a source is known as light emission.

That's the definition of a beam of light.

to about the beam of light further, refer to

https://brainly.com/question/21441738

Thank you!

Answer:

The cue ball crashing into the eight balls on a pool table.

Explanation:

Elastic and inelastic collisions are two types of collisions.

For elastic collision, both the momentum and the kinetic energy before and after the collision remains conserved.

Out of the given options, the option that shows an example of an elastic collision is option A " The cue ball crashing into the eight balls on a pool table." All the eight balls after crashing moves with different velocity.

your answer is.....

D. have a large atomic radius

although they also increase going from left to right so if D is incorrect, B might be your answer. it depends on context of the lesson.

Add the following digits in ones and tens column. One has been done for you.

43   =   4 tens   +   3 ones

14   =   1 tens   +   4 ones

_____________________

57   =   5 tens   +   7 ones

__________________

T          O

4          3

1          4

_________

5          7

________

All two-digit numbers are composed of tens and ones. For example, in the number 56, 5 is at the tens place, and 6 is at the ones place. Here, each rod represents 1 ten and is comprised of 10 ones. Factoid 1: The numbers 10, 20, 30, 40… can be written as 1 ten, 2 tens, 3 tens, 4 tens, and so on.

To learn more about numbers visit:https://brainly.com/question/17429689

#SPJ4