A flywheel with radius of 0.200 m starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s2.
1) For a point on the rim of the flywheel, what is the magnitude of the tangential acceleration after 2.00 s of acceleration?
2) For a point on the rim of the flywheel, what is the magnitude of the radial acceleration after 2.00 s of acceleration?
3) What is the magnitude of the resulant acceleration for this point after 2.00 s of acceleration?

Ghez's statement about "looking at a pebble at the bottom of a stream" refers to the difficulty of observing and studying black holes.

Ghez is referring to the fact that black holes are incredibly dense and have an intense gravitational pull that makes it difficult to observe them directly. Instead, scientists must infer their presence through the effects they have on nearby stars and other matter.

This requires extremely sensitive instruments and sophisticated techniques, much like trying to spot a pebble at the bottom of a stream. The comparison emphasizes the challenges involved in studying black holes and highlights the incredible achievements of Ghez and her colleagues in doing so.

To know more about stream, here

brainly.com/question/14311383

#SPJ1

There is none. EA (= EA cos 0) is the flux through lower circular surface, -EA (= EA cos 180) is the flux through the higher circular surface, and there is no flux (= EA cos 90) through the curving surface of the cylinder.

When determining the electromagnetic current or the flux generated by any of the following, a cylindrical Gaussian surfaces is used: a line of uniform discharge that goes on forever. a limitless, uniformly charged plane. an endlessly long, uniformly charged cylinder.

The charge kept on a cylinders per length l of cylinder is referred to as linear charge density. Complete solution, step by step: It is obvious that the electrostatic force created by a line discharge is always parallel to length before solving. The surface's normal direction is determined by the area vector.

To know more about surface visit:

https://brainly.com/question/28267043

#SPJ4

stop your hand so it doesn't hurt as much and if u stop your hand it would make more of an impact because if your hand bounces it means not enough strength so she should stop her hand

Aluminum is used on spacecraft for radiation shielding instead of lead due to its lighter weight and better mechanical properties.

When it comes to radiation shielding in spacecraft, weight is a crucial factor as it affects the overall mass of the vehicle. Aluminum offers a significant advantage over lead in terms of weight. Aluminum has a lower density compared to lead, which means that it can provide effective shielding while adding less weight to the spacecraft. This is especially important for space missions where every kilogram of weight saved can have a significant impact on the mission's cost and performance.

Additionally, aluminum possesses favorable mechanical properties that make it suitable for spacecraft applications. It is strong, durable, and exhibits good resistance to corrosion. These properties are essential for withstanding the harsh conditions of space and ensuring the structural integrity of the spacecraft.

Another material that could be a good choice for spacecraft shielding is polyethylene. Polyethylene is a lightweight plastic material that has excellent radiation shielding properties. It is commonly used in nuclear power plants and medical facilities for radiation protection. Polyethylene has high hydrogen content, which makes it effective at absorbing and attenuating ionizing radiation. Its lightweight nature and ease of fabrication make it an attractive option for spacecraft shielding, providing a good balance between radiation protection and weight efficiency.

Learn more about density the given link:

https://brainly.com/question/29775886

#SPJ11.

To find the center of mass of the four objects along the y-axis,

1. Multiply each object's mass by its position:
  (2.03 kg * 2.95 m) = 5.9885
  (2.91 kg * 2.55 m) = 7.4205
  (2.48 kg * 0 m) = 0
  (3.92 kg * -0.509 m) = -1.99528

2. Add the results from step 1:
  5.9885 + 7.4205 + 0 - 1.99528 = 11.41372

3. Add the masses of the objects:
  2.03 kg + 2.91 kg + 2.48 kg + 3.92 kg = 11.34 kg

4. Divide the sum from step 2 by the sum from step 3 to find the center of mass:
  11.41372 / 11.34 kg = 1.00649 m

The center of mass of these objects is at approximately 1.00649 m along the y-axis.

To know more about center of mass here:

https://brainly.com/question/23086835

#SPJ11

Answer:

2-3-1-4

Explanation:

First you will need an energy source so 2 is the first step.

Then the lead and lead oxide are reformed during re-charge so 3 is the second step.

The battery is back in operation when Lead dissolves in acid so 1 is the third step.

Battery produces electrons so 4 is the final step.

Answer:

Momentum is a physical quantity equal to the product of mass of the object and its velocity. Since velocity is a vector (a quantity that has both magnitude and direction), momentum is a vector quantity as well. According to the law of conservation of momentum, the momentum is always conserved.  This means that the initial momentum must be equal to the final momentum. Our initial momentum is zero since both, trolly and the girl on it are stationary. When the girl jumps, she has some velocity v. To compensate for that, the trolly will also move with some velocity v, but in the opposite direction so that the momentum stays conserved.

Explanation:

The correct answer is (d) - the two key starting assumptions of theoretical models of galaxy evolution are that (1) hydrogen and helium gas, along with dark matter, filled all of space and (2) some regions of the universe were slightly denser than others. These initial conditions set the stage for the formation of structures, including galaxies and clusters of galaxies, through the processes of gravitational collapse and star formation. The exact details of how these processes work and how they give rise to the observed properties of galaxies are the subject of ongoing research in astrophysics. However, the starting assumptions provide a framework for understanding the basic ingredients and forces at play in the evolution of the universe as a whole.
The correct answer to your question is option d: (1) Hydrogen and helium gas, along with dark matter, filled all of space and (2) some regions of the universe were slightly denser than others. These two key starting assumptions of theoretical models of galaxy evolution are essential for understanding how galaxies formed and evolved over time.

Initially, the universe was predominantly filled with hydrogen and helium gas, which are the lightest and most abundant elements, as well as dark matter. Dark matter, although not directly observable, is believed to make up a significant portion of the universe's total mass and plays a crucial role in the formation and evolution of galaxies.

The second assumption acknowledges that the distribution of these gases and dark matter was not perfectly uniform across the universe. Some regions were slightly denser than others. This uneven distribution led to the formation of gravitational potential wells, where matter began to accumulate and form into galaxies. Over time, as the universe expanded and cooled, these denser regions acted as the seeds for the formation of large-scale structures, including galaxy clusters and superclusters.

By considering these two key starting assumptions, theoretical models of galaxy evolution can accurately predict and explain the observed properties of galaxies and their distribution in the universe.

To know more about galaxy evolution visit

https://brainly.com/question/7337704

SPJ11

The amperage represents the rate at which electric charge flows through a conductor.

What is amperage?

Amperage is a measure of electrical current, or the rate at which electrical charge flows through a circuit. It is measured in units of amps (A). Amperage is related to voltage and resistance in an electrical circuit, and can be calculated using Ohm's law. Amperage is important to consider when sizing electrical components and wiring for a circuit, as too much amperage can cause damage to the components.

The amperage, also known as current, represents the rate at which electric charge flows through a conductor. It is measured in amperes (A) and is a measure of the quantity of electric charge that passes through a given point in a circuit per unit of time. In other words, amperage is a measure of how many electrons are flowing through a wire at a given moment. A low amperage means that there is a small amount of electric charge flowing through the conductor. This could be because the resistance of the conductor is high, or because the voltage of the power source is low. A low voltage, on the other hand, means that there is a small potential difference between two points in a circuit, which means that the electric charge is not being pushed as hard and may not be flowing as quickly.

Therefore, it represents the rate at which electric charge flows through a conductor.

To learn more about amperage from the link

https://brainly.com/question/852634

#SPJ1

The wavelength of the colored light is 4.00 x \(10^{-7}\) m, or 4.00 x \(10^{-4}\) cm.

The wavelength of a certain colored light with a frequency of about 7.5 x \(10^{14}\) Hz can be calculated using the following equation: wavelength (λ) = velocity of light (c) / frequency (f). The velocity of light is a constant, so it is equal to 3.00 x \(10^{8}\) m/s.

Plugging the given frequency into the equation, we get: λ = 3.00 x \(10^{8}\)  m/s / 7.5 x \(10^{14}\) Hz
Solving for wavelength, we get:
λ = 4.00 x \(10^{-7}\) m, or 4.00 x \(10^{-4}\) cm
This means that the wavelength of the colored light is 4.00 x \(10^{-7}\) m, or 4.00 x \(10^{-4}\) cm.

To summarize, the frequency of the colored light is 7.5 x \(10^{14}\) Hz, and the corresponding wavelength is 4.00 x \(10^{-7}\) m, or 4.00 x \(10^{-4}\) cm. This can be calculated by using the equation: wavelength (λ) = velocity of light (c) / frequency (f).

For more such questions on Wavelength.

https://brainly.com/question/20462619#

#SPJ11

Answer:

Option A - Sound waves must move through a substance

Explanation:

Unlike light waves, sound waves must travel through a medium/substance for such a medium to vibrate and then produce sound.

As a matter of fact sound can't travel through empty space.

Thus, looking at the options given, the correct one is:

Sound waves must move through a substance which is Option A

a) The number of turns in the solenoid is approximately 206.

To determine the number of turns in the solenoid, we can use the formula for the magnetic field inside a solenoid, which is given by B = μ₀nI, where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current.

Rearranging the formula, we have n = B / (μ₀I). Substituting the given values of B = 9.00 T and I = 75.0 A, and using the value of μ₀, we can calculate the number of turns per unit length. Multiplying it by the length of the solenoid (0.500 m) gives us the total number of turns in the solenoid, which is approximately 206.

A solenoid is a coil of wire wound in a helical shape. When a current flows through the coils, it creates a magnetic field along the axis of the solenoid. The strength of the magnetic field depends on factors such as the number of turns per unit length and the current flowing through the solenoid.

In this case, we are given the magnetic field and current, and we use the formula for the magnetic field inside a solenoid to calculate the number of turns. The higher the number of turns, the stronger the magnetic field generated by the solenoid.

Learn more about solenoid

brainly.com/question/21842920

#SPJ11

Answer: it’s when Somethisomething is at the High Point like the top of the roller coaster or the top of the hill I will add a photo to explain

Explanation:

Answer:

B aluminum

Explanation:

Because aluminum loses 3 types of electrons and it donates it to fluorine.

Answer:

Speed is a scalar quantity, that is, it is a number and indicates how fast (or slow) one travels at any given time.

Velocity is a vector quantity, this means that it has magnitude and direction, that is, how fast an object travels and its where its going (speed + the direction in which the object moves).

Acceleration is the ratio of the velocity change over the time interval in which this velocity change occurred. Acceleration as well as velocity is a vector quantity so it is made up of magnitude and direction.

The differences between these three quantities are important for the description of the movement. In the case of speed and velocity, its difference lies in the fact that velocity indicates the direction in which the movement is taking place (and speed is only a number), which in many physical phenomena the direction of movement is an important property. And the difference between acceleration and velocity is that acceleration instead of a velocity indicates a change in velocity (either in magnitude, direction or both), which tells us how fast a velocity will increase or decrease over time.

Answer:

(a) To determine the time it takes for the baseball to reach the highest point in its path, we need to use the equation:

v_f = v_i + a*t

where v_f is the final velocity, v_i is the initial velocity, a is the acceleration, and t is the time.

At the highest point in its path, the baseball will momentarily stop before falling back down to the surface, so its final velocity will be zero. The initial velocity is 30.00 m/s, and the acceleration due to gravity on Mars is 4.00 m/s². Plugging these values into the equation, we get:

0 = 30.00 m/s - 4.00 m/s² * t

Solving for t, we get:

t = 7.50 s

Therefore, it will take 7.50 seconds for the baseball to reach the highest point in its path.

(b) To determine how high the baseball will reach, we need to use the equation:

y_f = y_i + v_it + 1/2a*t²

where y_f is the final height, y_i is the initial height (which we can assume is zero), v_i is the initial velocity, a is the acceleration, and t is the time.

Plugging in the values we know, we get:

y_f = 0 + 30.00 m/s * 7.50 s + 1/2 * 4.00 m/s² * (7.50 s)²

Simplifying this expression, we get:

y_f = 562.50 m

Therefore, the baseball will reach a height of 562.50 meters above the surface of Mars before falling back down.

The mass of the boat is 8000 Kg.

It is given that,

Length of a boat = 4 m

Width of  a boat = 2 m

Height up to which water is displaced or its water line = 1 m

Volume of water displaced by the boat:-

Volume =  Length x Breadth x Height

V = 4 x 2 x 1 = 8 m³

Buoyant force is the upward force exerted on an object when it is immersed in a fluid fully or partly. It is also called Upthrust.

Buoyant force acting on the boat:-

Fb = ρ g V

m g = ρ g V

m = ρ V

ρ is the density of water which is equal to 1000 Kg/m³

mass = ρ V

mass =1000 x 8

mass = 8000 Kg

Hence, mass of the boat is equal to 8000 Kg

To know more about Buoyant force refer: brainly.com/question/21990136

#SPJ4

F_net:-

Now

Apply Newton's second law

Answer:(of a reaction or process) accompanied by the release of heat.

Explanation: trust moi

After the collision, the two cars stick together. Find the final velocity of the two cars would be 0.667 meters per second as per the conservation of the momentum after the collision.

It is the type of collision in which the total momentum as well as the kinetic energy on the system is conserved.

As given in the problem we have to find the velocity of the two cars if, after the collision, the two cars stick together,

As per the conservation of the momentum,

The total initial momentum of the cars before the collision = The total final momentum of the cars after the collision

1 × 2 + 2 × 0  = ( 1 + 2 ) × V

2 + 0 = 3 × V

V = 2 / 3

V = 0.667 meters per second

Thus, after the collision, the two cars stick together, then the final velocity of the two cars would be 0.667 meters per second

To learn more about the collision from here , refer to the link ;

brainly.com/question/2356330

#SPJ6

Answer:

c

Explanation:

c

When the stone reaches its highest point, it is neither gaining nor losing speed because the acceleration of the stone at that instant is 0.

At the highest point of its trajectory, the stone momentarily stops and changes direction, going from moving upward to moving downward. The acceleration is the rate of change of velocity, and at this point, the velocity is changing from upward to downward. Since the stone is changing direction, the velocity is changing, but the speed remains constant. This means that the stone's acceleration is 0, and therefore it is neither gaining nor losing speed.

In this situation, the net force acting upon the stone is still equal to its weight, mg. However, this is not the reason why the stone is neither gaining nor losing speed. The stone's velocity and the net force exerted upon the stone are not at a 90-degree angle, so option (c) is incorrect.

The statement about the stone following a parabolic trajectory and the peak of the trajectory having zero slope is true, but it does not explain why the stone is neither gaining nor losing speed at the highest point.

To know more about acceleration visit:

https://brainly.com/question/2303856

#SPJ11

Answer: The Universe has no scale, no matter and no size it is an infinite void of never-ending wonder.

Explanation:

Answer:

The law of gravity

Explanation:

A. The total force acting on the plane during take-off is 563,140 N. This is calculated by multiplying the thrust of each engine (281,570 N) by the number of engines (2).

An engine is an mechanical device that converts energy into useful work, typically in the form of rotational force. Engines are used in a variety of applications, from cars and airplanes to power plants and generators.

b. The acceleration the plane experiences during take-off can be calculated using Newton's Second Law of Motion, which states that Force = Mass x Acceleration. Therefore, the acceleration is 563,140 N / 369,000 kg = 1.53 m/s2.
c. To calculate the time it takes the plane to reach take-off speeds, we can use the kinematic equation for average acceleration, which states that the time taken is equal to the change in velocity (76 m/s) divided by the acceleration (1.53 m/s2). Therefore, the time taken is 49.8 seconds.
d. Using the kinematic equation for displacement, we can calculate the displacement the plane covers during take-off. This equation states that displacement is equal to the initial velocity (0 m/s) multiplied by the time taken (49.8 seconds) plus one-half of the acceleration (1.53 m/s2) multiplied by the time taken squared (49.8 seconds x 49.8 seconds). Therefore, the displacement is 3,814.7 m.

To learn more about engine
https://brainly.com/question/25870707
#SPJ1

The total heat capacity of the calorimeter (C_calorimeter) refers to the amount of heat required to raise its temperature by 1 degree Celsius.

The heat capacity of an object is given by the equation Q = CΔT, where Q represents the amount of heat transferred, C is the heat capacity, and ΔT is the change in temperature. In the case of a calorimeter, the total heat capacity includes the heat capacity of the calorimeter itself (C_calorimeter) as well as any other components present in the calorimeter system.

To determine the total heat capacity of the calorimeter, one would need to consider the individual heat capacities of the calorimeter and any additional components, such as the inner vessel or insulating materials. These values are typically determined experimentally by measuring the amount of heat transferred to the calorimeter and the resulting temperature change. By dividing the measured heat transfer by the corresponding temperature change, one can calculate the total heat capacity of the calorimeter.

Learn more about Heat capacity

https://brainly.com/question/2830290

#SPJ11

Among the reasons for the frequent use of composite measures is that they give a more comprehensive and accurate indication of a given variable. Besides, the researcher is seldom able to develop in advance single indicators of complex concepts. A single data item might not have enough categories to provide a range of variation. And lastly, they are efficient data reduction devices.

So, the correct answer is option (e) all of these choices.

Composite measures are used to combine several variables or scores into a single measurement or index. In other words, they are multidimensional measurement tools. It is useful to make this kind of index because it is possible to calculate the reliability and validity of composite measures, which are statistical measures that indicate whether or not the measurements were conducted accurately or are otherwise legitimate.

For example, if a researcher wants to assess the economic development of a country, he/she could create a composite measure by combining data on GDP per capita, literacy rates, and poverty rates. In this case, each of the three variables reflects a different aspect of economic development.

So, the correct answer is E.

Learn more about variability at

https://brainly.com/question/28621242?

#SPJ11

Answer:

Collect more fuel than you think you can use; you may need more than you estimate. Pile fine twigs, grass, or bark shavings loosely as a base.