Resolve the following vectors.
a. 75 grams at 130°

I was just given this prelab to do and I have no idea where to start solving this as she hasn’t gone over anything about it, and the lab procedure doesn’t clear anything up. I just need to see this one problem worked out.

A long cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 80°C. The  final temperature of the water after the ice has melted is 65.5° C for given latent heat of fusion ad vaporization .

The enthalpy of fusion of a substance, also known as (latent) heat of fusion in thermodynamics, is the change in its enthalpy caused by applying energy, often heat, to a specified quantity of the substance to change its state from solid to liquid under constant pressure.

It is the amount of energy needed to transform one mole of solid into liquid. For example, when 1 kilogram of ice is melted (at 0 °C and a variety of pressures), 333.55 kJ of energy is absorbed with no temperature change. When a substance turns from liquid to solid, the heat of solidification is equal and opposite.

This energy includes the contribution required to accommodate any corresponding volume change by displacing its surroundings.

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The subject depicted in the attached image is Astronomy and Astrophysics.

Astronomy is the scientific study of celestial objects such as stars, planets, galaxies, and other phenomena that exist outside of Earth's atmosphere.

Astronomers use a variety of methods to observe and study these objects, including telescopes, spacecraft, and computer simulations.

Astronomy is a broad field that includes many different sub-disciplines, such as astrophysics, planetary science, and cosmology.

Astronomers study the physical properties and behavior of celestial objects, such as their composition, temperature, motion, and evolution.

They also seek to understand the structure and history of the universe as a whole.

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Answer:

which on a is the question

True, Food manufacturers create fats by adding hydrogen to fats.

Hydrogenation is used in the oil industry in making trans fats or margarine by increasing the melting point through reducing the carbon-to-carbon double bonds..

During hydrogenation, unsaturated fats undergo a chemical reaction in the presence of hydrogen gas and a catalyst, typically nickel.

The process involves the addition of hydrogen atoms to the carbon double bonds in the fatty acid molecules, resulting in the conversion of some of the double bonds into single bonds.

This reduces the number of unsaturated bonds in the fat, making it more saturated.

So we can conclude that the statement is true.

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Answer:

С . Molecules are made up of two or more  atoms.

Explanation:

The relationship between molecules and atoms is that molecules are made up of two or more atoms.

Molecules are made up of atoms.

A molecule is the smallest particle of a substance element or compound capable of independent existence.

A molecule could be monoatomic, diatomic or polyatomic.

Monoatomic molecules are made up of one atom

Diatomic are made up of two different atoms

Polyatomic substances are made up of more than two kinds of atoms.

Answer: A

Explanation:

Explanation:

Systematic error (also called systematic bias) is consistent, repeatable error associated with faulty equipment or a flawed experiment design. These errors are usually caused by measuring instruments that are incorrectly calibrated or are used incorrectly.

Answer:

I believe it's A

Explanation:

........

Explanation:

I  wavelength

J amplitude

K trough

L crest

M equal

E =+823.12N/C is the electric field at point P

Each point in space has an electric field associated with it when a charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field. in the diagram, q1 = +6.39*10^-9 C and

q2 = +3.22*10^-9 C hence E = 823.12 N/C

A region of space surrounding andd P Include a + or - sign toindicate the direction.P910.424 m-0.636 m- electrically charged particle or object known as an electric field is one in which an electric charge would experience force. A vector quantity called an electric field can be represented by arrows pointing in the direction of or away from charges. The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.

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Answer: Picture is too small I can’t see

The balanced equation for the given unbalanced chemical reaction is:

\(C_3H_6O_2 +\frac{7}{2} O_2 \longrightarrow 3CO_2 +3H_2O\)

A chemical equation can be defined as a representation of a chemical reaction in which symbols of the substances, participated reactants, formed products, and an arrow showing the direction of the reaction is involved.

A balanced equation in which the number of atoms of each element reactants and products is equal in the equation of a chemical equation.

The law of conservation of mass should be obeyed while balancing a chemical equation. The total mass present on the reactant side should be equal to the total mass on the product side in a balanced chemical equation.

The balanced chemical equation for a given reaction is:

\(C_3H_6O_2 +\frac{7}{2} O_2 \longrightarrow 3CO_2 +3H_2O\)

Therefore, missing coefficients O₂, CO₂ and H₂O are 7/2, 3 and 3 respectively.

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Higher temperatures or lower activation energies result in more sufficiently energetic collisions, which increases the fraction of such collisions, increases the value of k, and increases reaction rates.

The consequences are explained by the collision theory. These variables include temperature, catalysts, surface area, concentration, and reactant type. Each of these influences raises the number and energy of collisions, which increases reaction rate.

The hypothesis states that responding particles usually collide without reacting. For interactions to take place, reacting particles need to collide with enough energy, in the appropriate direction, and with enough mass.

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Two objects are held close together. When they are released, they move toward one another. The conclusion is supported by this evidence is  the objects have opposite charges.

An electric charge is a physical property that causes matter to experience a force when in close proximity to other electrically charged matter. There are two types of electric charges: positive and negative. Protons, which are positively charged, and electrons, which are negatively charged, are subatomic particles that make up matter.

In general, the protons and neutrons in the nucleus of an atom have a net positive charge, while electrons, which orbit the nucleus, have a net negative charge. The charges of these subatomic particles are indicated by the symbols "p" for proton, "n" for neutron, and "e" for electron.

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a) The number of excess electrons on the sphere is 1.97 x 10^10 electrons.

b) There are 0.0000857 excess electrons per lead atom.

a) The elementary charge of a single electron is -1.6 x 10^-19 C. To find the number of excess electrons on the sphere, we can divide the total charge by the charge of a single electron:

-3.15 x 10^-9 C / (-1.6 x 10^-19 C/electron) = 1.97 x 10^10 electrons

b) To find the number of excess electrons per lead atom, we need to first find the number of lead atoms in the sphere. We can use the molar mass of lead and the mass of the sphere to find the number of moles of lead:

7.90 g / 207 g/mol = 0.0382 mol

Next, we can use Avogadro's number to find the number of lead atoms:

0.0382 mol x (6.02 x 10^23 atoms/mol) = 2.30 x 10^22 atoms

Finally, we can divide the number of excess electrons by the number of lead atoms:

1.97 x 10^10 electrons / 2.30 x 10^22 atoms ≈ 0.0000857 excess electrons per lead atom.

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Answer:

By nature, laws of Physics are stated facts which have been deduced and derived based on empirical observations. Simply put, the world around us works in a certain way, and physical laws are a way of classifying that “working.”

Answer:

and is in photo given.I didn't get time to type.

If there is no existence of capacitors in our world there would be no electrical or electronic engineering.

A capacitor is a device that stores electrical energy in an electric field. It has two terminals and is a passive electrical component. Capacitance refers to a capacitor's effect. A capacitor commonly referred to as a condenser is one of the fundamental parts needed to create electronic circuits. Without fundamental parts like resistors, inductors, diodes, transistors, etc., a circuit's design is incomplete or it won't work properly.

Energy storage is capacitors' most popular application. Power conditioning, signal coupling or decoupling, electronic noise filtering, and remote sensing are further applications. Capacitors are employed in a wide variety of industries and have integrated into daily life due to their numerous applications.

There are numerous significant uses for capacitors. They are employed in digital circuits, for instance, to prevent the loss of data saved in big computer memories during a brief loss of power. The electric energy held in such capacitors keeps the data from being lost during a brief power outage.

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Positive connotation is a specific form of reframing the presenting problem.

It is a positive explanation of the current functioning within a family system aimed at creatively circumventing resistance and negating blame by approaching the presenting problem from a position of circular causality. It evokes a positive emotional response.

The primary function of this *positive reframing technique allows the therapist to take a family systems perspective of the family and the symptomatic behaviors that have brought the family to therapy. Positive connotation is often utilized as an antecedent to the paradoxical prescription that the family continues in its current functioning.

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Answer:

Explanation:

a) the acceleration of the puck on the rough ice.

a = μg = 0.550(9.81) = 5.3955 = 5.40 m/s²

 (comes from μ = F/N = ma/mg = a/g)

b) the distance from the end boards the puck is when it comes to a stop.

v² = u² + 2as

0² = 12.0² + 2(-5.40)s

s = 13.3 ft

so distance from the boards is

15.7 - 13.3 = 2.4 m

by the way...that's some VERY rough ice...more like sand.

Answer:

The acceleration is g.

Taking the upward direction as positive

V = Vy y - 1/2 g t^2

Taking the downward direction as positive

V = -V y + 1/2 g t^2

One can choose either direction as positive, but the acceleration is

the same as g (it is g) while the projectile is in the air.

When a projectile reaches the highest point the vertical component of the acceleration is negative g (acceleration due to gravity). Thus, the correct option is D.

Projectile motion is the motion of an object which is thrown or projected high into the air. After the initial force applied on the object that launches the object, the object only experiences the gravitational force. The object is called a projectile and the path of the object is called trajectory.

When a projectile reaches the highest point the vertical component of the acceleration is negative g (acceleration due to gravity). When the object achieves highest point, then the vertical acceleration of a projectile is zero meter per second square when it is at the peak of its trajectory motion.

Therefore, the correct option is D.

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Time of flight = 1.6 s

Horizontal distance = 64 m

Projectile motion is the form of motion experienced by an object or particle projected into a gravitational field, such as from the surface of the Earth, and moves along a curvilinear path only under the action of gravity.

For the given case,

h = vt + ¹/₂gt²

h = height of tower

v = initial velocity

t = time of flight

55 = 50sin30t + ¹/₂9.8t²

55 = 25t + 4.9t²

4.9t² + 25t - 55 = 0

t = 1.6 s

X = vₓt

X = horizontal distance

vₓ = horizontal velocity

t = time of flight

X =  (50 x cos30) x 1.6

X =  64 m

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Answer:

The characteristics that determine how easily two substances change temperature are:

The volume and density of the substances and the amount of time they are in contact do not directly affect how easily they change temperature.

Explanation:

Answer:

About 4.4 seconds

Explanation:

\(h=1/2(gt^{2} )\)

\(t^{2} =\frac{2h}{g}\)

\(t=\sqrt{\frac{2h}{g} }\)

\(t=\sqrt{\frac{2(93)}{9.8} } =\sqrt{18.98} =4.36\)

Hope this helps

The well that will have most of the water will be well A.

The underground water supply is defined as a type of water that exists underground in saturated zones beneath the land surface.

From the two wells represented in the diagrams above, Well A has water supply from underground which is lacking in well B.

Therefore, well A will have most of the water more than B.

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An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.

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Answer:

Explanation:ans:0 . Because when we connect this conductive sphare with earth then all charge will be gone in earth