Jack and Jill have a pail of water. Which action will cause the molecules of water to move faster?

Answer:

Both chemicals are very harmful to the environment. They are also very harmful to human and can be very fatal. These two chemicals ae commonly found in every home.

Explanation:

easy

Answer: Potential energy

Explanation:

The initial potential energy is equal to zero. Potential energy is energy possessed by a body by virtue of its position. A body that is not moving is said to be in position and a body in position will have a zero velocity.

Answer:

yes it is

Explanation:

thankyou ii really need these points

Answer:

the answer to this would have to be 1,2 and 4

Explanation:

i just did it

Answer:

D. Scientific investigation aims to design and implement an experiment to learn new information, whereas technological development aims to design a product to solve a problem.

Explanation:

Answer:

12.5

87.5

Explanation:

Answer:

D

Explanation:

Hope it helps!

It is false that the mass of an object is equal to its weight, as it is never the same.

In physics, mass is a quantitative measure of inertia, which is a foundational element of all matter.

It is, in effect, the opposition that a body of material provides to a change in its pace or position when a force is applied to it.

The smaller the change generated by an applied force, the greater the mass of the body.

The mass of an object is a fundamental quantification of its matter content.

Weight is a measurement of an object's gravitational force. It is determined not only by the mass of the object, but also by its location. As a result, weight is a measure of force.

A balance is used to measure mass. Mass can be measured in the lab using a triple beam balance or an analytical balance.

Thus, the given statement is false.

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Seasonal rainstorms because there is a lot of water vapor in the air causing it to always be moist.

Answer:

answer D

Explanation:

why you ask because its asking you the water vapor

and asking you the amount of water im confused a bit i hope it helps

Heat transfer from the Sun to Venus occurs via radiation, and the measure of molecular kinetic energy in a substance is temperature. Conductors like aluminium transfer heat efficiently, specific heat denotes a substance's heat absorption capacity, thermal energy depends on molecular motion, and a thermometer is used by doctors to measure body temperature.

The type of heat transfer that occurs between the Sun and Venus is known as radiation. This is the transfer of energy by electromagnetic waves, which does not require a medium to travel through space.

The measure of the average value of the kinetic energy of the molecules in a substance is called temperature. Higher temperatures correspond to higher average kinetic energy among the molecules of a substance.

Materials like aluminium pans and metal spoons that easily transfer heat are called conductors. These materials are efficient in transferring thermal energy through direct contact.

The measure of how well a substance absorbs heat is known as its specific heat. It is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

The type of energy that depends on how fast the molecules in a substance are moving is called thermal energy. Higher speeds of molecular motion correlate with higher thermal energy.

The temperature scale is which a reading of 0 equals the freezing point of water is the Celsius scale, also known as Centigrade.

To measure the average kinetic energy of the molecules in your body, a doctor would use a thermometer. The reading is a direct indication of your body's temperature.

C) The change of velocity over time

Final answer:

Acceleration is the rate of change of velocity over time. It is a vector quantity that can signify speeding up or slowing down and is measured in meters per second squared. So the correct option is c.

Explanation:

Acceleration is the rate at which velocity changes over time and can involve a change in speed, direction, or both. The formula for average acceleration is given by the change in velocity (∆v) divided by the time interval (∆t) over which this change occurs. It is important to note that acceleration is a vector quantity, meaning it has both magnitude and direction. Thus, acceleration can be positive (speeding up) or negative (slowing down, also known as deceleration). The SI unit for acceleration is meters per second squared (m/s2).

Therefore, the correct answer to the question 'What is acceleration?' is c) the change of velocity over time.

Final answer:

UV light has shorter wavelengths and higher frequencies than visible light, resulting in more energy, which is why statement A is correct.

Explanation:

The question asks which statement correctly compares ultraviolet (UV) and visible light. The correct answer is A, which states that UV light has more energy than visible light. This statement is accurate because in the electromagnetic spectrum, UV light has shorter wavelengths and higher frequencies than visible light, both of which contribute to its higher energy levels. Unlike visible light, the higher energy of UV light can be enough to break chemical bonds, such as those in DNA, which can lead to cellular damage and is why it is often blocked by sunscreen and sunglasses.

When on a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water 1.5 seconds later. Ignore air resistance, then the height of the bridge would be  11.03 meters.

There are three equations of motion given by  Newton,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem, when on a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water 1.5 seconds later. Ignore air resistance,

By using the Second equation of motion,

S = ut + 1/2×a×t²

S = 0 + 0.5*9.81*1.5²

S = 11.03 meters

Thus, the height of the bridge would be 11.03 meters.

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Final answer:

John Dalton created his own element symbols to visually represent the atoms and their combinations as part of his atomic theory. These symbols were crucial for the systematization of chemistry and preceded other symbol systems such as those of G. N. Lewis, which illustrate valence electrons and chemical bonding.

Explanation:

John Dalton, an English scientist, devised his own element symbols as part of his pioneering work in atomic theory. Dalton's atomic theory posited that elements are composed of indivisible atoms, that matter combines in fixed ratios, and that compounds always have consistent proportions. His element symbols, depicted in Dalton's book A New System of Chemical Philosophy, were an early attempt to represent these atoms and their combinations visually. These symbols laid the groundwork for the systematization of chemistry and were a precursor to later representations such as the Lewis dot symbols. Unlike Dalton's symbols, Lewis dot symbols focus on representing the valence electrons of atoms to predict chemical bonding and formation, as G. N. Lewis published in 1916.

Without Dalton's work, our understanding of the chemical composition of matter and the development of subsequent theories of chemical bonding, such as those proposed by G. N. Lewis, might have been significantly delayed. Dalton's dedication to empirical evidence and experimentation set his atomic theory apart from the philosophical ideas of ancient Greeks like Democritus and Leucippus, contributing greatly to the advancement of modern science and chemistry.

Solution:

Starting with g equal to (1/0.6), solve for v.

v = 0.8c = 2.4E8 m/s

Answer:

500g ball have more kinetic energy.

Explanation:

Due to mass is directly proportional to kinetic energy.

First calculate the volume of the rectangular prism by multiplying its length, width and height. The volume of the prism is 8 cm^3. Since density is known to be mass over volume, just multiply the given density with the volume. The mass of the prism then is 960 grams. 

Answer:

mass = 960 g

Explanation:

The rectangular prism have a density, length , width and height. We are asked to calculate the mass of the rectangular prism from the data given above.

The density of an object measures the mass of the object to it volume. Mathematically, density is the mass of an object divided by it volume. It is represented as follows;

density = mass/volume

The density of the prism is known from the data given but the volume is not given . Base on the data given, one could compute volume of the rectangular prism.

volume of a rectangular prism = Length × width × height

length = 4cm

width = 2cm

height = 1cm

volume of a rectangular prism = 4 × 2 × 1

volume of a rectangular prism = 8cm³

Since the volume is known the mass can be computed from the density formula.

density = mass/volume

mass = density × volume

density = 120 g/cm³

volume =  8cm³

mass = 120 × 8

mass = 960 g