Which of the following is velocity?
-35.2 m/s
125 m/s East
All of these are examples of velocity.
+95 m

The quantity of heat that was transferred to the block of iron is 5544 J or 5.544 kJ

From the question, we are to determine how much heat was transferred to the block of iron

Using the formula,

Q = mcΔT

Where Q is the quantity of heat

m is the mass

c is the specific heat capacity of the substance

and ΔT is the change in temperature

From the given information,

m = 0.400 kg

ΔT = 325 - 295 = 30 K

Putting the parameters into the equation, we get

Q = 0.400 × 462 × 30

(NOTE: Specific heat capacity of iron = 462 J/kg.K)

∴ Q = 5544 J

Hence, the quantity of heat that was transferred to the block of iron is 5544 J or 5.544 kJ

Learn more on Calculating quantity of heat here: https://brainly.com/question/13439286

#SPJ1

Answer:

Normal, Gravitational, Applied, Friction, and Tension

Explanation:

Because the sled is on the ground, or rather because it is on the earth, it will have a force of gravity, or its weight, pulling it down.

There is a normal force because the sled is not moving into the ground, so there needs to be a force pushing on the sled from the ground. Additionally, Newton's 3rd law states that for every action there is an equal but opposite reaction, if it's in equilibrium or not moving.

There will be an applied force since the child is pulling the sled and is applying a force to do so.

There will be a friction force that is pulling the sled opposite the direction it is moving, since it is on the ground that is presumably not fricitonless.

There will be a tension force pulling on the sled by the rope. However there is also a tension force pulling on the child's hand by the rope, meaning that these are internal forces and essentially balance out, but they are still there.

There is no air resistance force, or very little of it, since the object is not falling.

Both rocks hit the ground at the same time and at the same distance from the base of the cliff. Option A is correct.

Speed is defined as the rate of change of the distance or the height attained. it is a time-based quantity. it is denoted by u for the initial speed while u for the final speed. its SI unit is m/sec.

If the  resistance is ignored, things falling near the Earth's surface have the same estimated acceleration due to gravity of 9.8 meters per second.

As a result, the objects' acceleration is the same, and their velocity is growing at a consistent pace.

So that both rocks hit the ground at the same time and at the same distance from the base of the cliff.

Hence, option A is correct.

To learn more about the sped, refer to the link;

https://brainly.com/question/7359669

#SPJ1

Answer:

.25 Hz

Explanation:

Period = 4 sec

freq = 1/p = 1/4 hz  = .25 Hz

Answer:

208 is the surface area!

Explanation:

Hope this helps! ;-)

Plasma osmolarity increases when you give a severely dehydrated person large amounts of pure water.

The electrolyte–water balance of the body is measured by plasma osmolality. This amount can be determined in a variety of ways, including measurement and computation.

Osmolality and osmolarity are two separate measurements that are used interchangeably in everyday situations.

When you are dehydrated, osmolality rises, and when you have too much fluid in your blood, it drops.

The way your body regulates osmolality is unique. When your body's osmolality rises, your body produces antidiuretic hormone.

Hence,plasma osmolarity increases when you give a severely dehydrated person large amounts of pure water.

To learn more about the plasma osmolarity refer:

https://brainly.com/question/16045788

#SPJ1

The force must be applied for motor to keep the package moving is 50 N.

Force is the action of push or pull the object in order to make it move or stop.

Power is related to force and velocity as

P = F x v

150 W = F x 3 m/s

F  =50 N

Thus, the force must be applied for motor to keep the package moving is 50 N.

Learn more about force.

https://brainly.com/question/13191643

#SPJ1

The value of capacitor C2 in the given parallel circuit arrangement of the capacitors is 25 F.

The capacitance of the circuit is calculated as follows.

Assuming a parallel circuit arrangement for the capacitors;

C(total) = C1 + C2

58 F = 33 F + C2

C2 = 58 F - 33 F

C2 = 25 F

Thus, the value of capacitor C2 in the given parallel circuit arrangement of the capacitors is 25 F.

Learn more about capacitance here: https://brainly.com/question/13578522

#SPJ1

Answer:

B

Explanation:

i hope this is correct.

#1

Here

Calcium is less reactive than sodium so it can't displace Na .

Nothing will happen

#2

This is oxidation

Answer:

Explanation:

I'm assuming you need this answer quickly.

Using what we know:

The energy of a single 400 nm photon is 3.1 eV.

So a photon of 412 nm wavelength would have the energy of 4.0 ev.

If you touch a conductor through which electricity flows with an insulator, the likelihood of receiving a shock depends on several factors, including the voltage and current of the electrical source, the amount of insulation present, and how well the insulation is able to insulate from the electricity.

Insulators are materials that do not conduct electricity and are commonly used to provide a barrier between humans and electrical conductors to prevent electrical accidents. When an insulator is used to touch a conductor through which electricity flows, the insulator acts as a barrier and prevents the current from flowing through the material and into the body.

However, if the insulation is inadequate or damaged, or the voltage of the electrical source is high enough to overcome the insulating properties of the material, a shock can occur. The shock occurs when the current passes through the body, causing damage to organs, muscles, and nerves.

Therefore, it is important to ensure that proper insulation practices are followed when working with electrical conductors, and to use insulation materials that are sufficient to protect against the voltage and current levels of the electrical source being used. Generally, it is recommended to avoid touching electrical conductors altogether, as the risk of electrical accidents is always present.

For such more questions on electricity

https://brainly.com/question/27600426

#SPJ11

No, you will not receive a shock if you touch a conductor through which electricity flows with an insulator. An insulator is a material that does not conduct electricity, meaning it does not allow the flow of electric current.

It has high resistance and acts as a barrier, preventing the transfer of electrons. Therefore, when you touch a conductor with an insulator, the insulator acts as a protective layer that blocks the flow of electric current and prevents it from reaching your body. As a result, you will not experience a shock. However, it is important to note that the effectiveness of the insulator in preventing a shock depends on its quality and condition. If the insulator is damaged or has a low resistance, it may not provide adequate protection, and there is a risk of electric shock. Additionally, it is crucial to follow safety protocols and avoid touching conductors or working with electricity unless you are trained and have the necessary knowledge and equipment to do so safely.

for more such questions on   electricity

https://brainly.com/question/776932

#SPJ11

Answer:

The weight of an object is dependent upon the value of the acceleration of gravity.

the hot sun

hi

Explanation:

when its sunny (always in my city) then put ice on the sun (not directly to the sun) but where the sun shines

answer:

Answer:9.17 m|s

Explanation:

explanation shown

Apply conservation of momentum

[tex]\\ \rm\Rrightarrow m1v1+m2v2=(m1+M2)v3[/tex]

[tex]\\ \rm\Rrightarrow 0.045(400)+16(0)=(0.045+16)V3[/tex]

[tex]\\ \rm\Rrightarrow 18=16.045v3[/tex]

[tex]\\ \rm\Rrightarrow v3=1.12m/s[/tex]

Answer

When you are riding in a coaster car that is traveling at a constant speed, you only feel the downward force of gravity. But as the car speeds up or slows down, you feel pressed against your seat or the restraining bar. You feel this force because your inertia is separate from that of the coaster car.

Explanation:

Answer: From the moment the first gas cloud begins to compress until the star is formed and glows like the Sun, the process of star creation takes around a million years. Planets and other objects circle the central star using the remaining material from the star's formation.

Explanation:

Answer: Before the gas could disengage from the magnetic field and collapse, every ion in the gas would need to locate an electron to neutralize it. This implies that the formation of a star takes more than 10 million years.

Explanation:

Heating and cooling are the kind of energy.  The most important energy when considering the heating and cooling of a building is thermal energy. The correct option is A.

Energy is the ability to do work.

The temperature of building is increased or decreased due to the season changes. This heating or cooling is a  type of energy related to thermal.

Thus, the most important energy when considering the heating and cooling of a building is thermal energy.  The correct option is A.

Learn more about energy.

https://brainly.com/question/1932868

#SPJ1

Answer:

Below :)

Explanation:

A) 720/3 =240.  40 per minute.

B)  720/180 = 4 per second.

C)  T=1/4 s^-1 (the formula) = 1/4 s. (The time peroid.)

D)  V=1/T

     V= 4 Hz

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

An oscillator makes 720 vibrations in 3 minutes. so, we have to solve the given problems based on it ~

#1. what's the number of vibrations per minute •

[tex]\qquad \sf  \dashrightarrow \: 3 \: min = 720 \: vib[/tex]

[tex]\qquad \sf  \dashrightarrow \: 1 \: min = \dfrac{720}{3} [/tex]

[tex]\qquad \sf  \dashrightarrow \: 1 \: min = 240 \: vib[/tex]

#2. Calculate unit vibrations per second •

[tex]\qquad \sf  \dashrightarrow \: 1 \: min = 240 \: vib[/tex]

[tex]\qquad \sf  \dashrightarrow \: 60 \: sec = 240 \: vib[/tex]

[tex]\qquad \sf  \dashrightarrow \: 1 \: sec = 4 \: vib[/tex]

#3. What's it's time period •

time taken to do 1 vibration is known as a period, so we can infer that :

[tex]\qquad \sf  \dashrightarrow \: 1 \: vib = \dfrac{1}{4} \: sec[/tex]

[tex]\qquad \sf  \dashrightarrow \: t = 0.25 \: sec[/tex]

#4. what is it's frequency in hert •

[tex]\qquad \sf  \dashrightarrow \: f = \dfrac{1}{t} [/tex]

[tex]\qquad \sf  \dashrightarrow \: f = \dfrac{1}{0.25} [/tex]

[tex]\qquad \sf  \dashrightarrow \: f = 4 \: hertz[/tex]

Answer:

the density of water is 1 and tin is 7.31 if i remember right

Explanation:

Use the work-energy theorem. The total work W performed on the car as it it slows to a stop is equal to the change in the car's kinetic energy ∆K. So

W = ∆K

W = 0 - 1/2 (1000 kg) (72 km/h)²

W = - (500 kg) (20 m/s)²

W = - 200,000 J = -2 × 10⁵ J

The closest answer would be C, but friction opposes the car's motion so the work would be negative.

(c) absorb the digested food

Explanation:

It is called villi' in case of human beings.. That's it..

The finger-like outgrowths in the human intestine are called villi, and their main function is to absorb the digested food. Therefore, the option is (c) absorb the digested food.

The villi in the human intestine increase the surface area for absorption, allowing for more efficient uptake of nutrients from the digested food. They contain blood vessels and lymphatic vessels that absorb nutrients such as sugars, amino acids, and fatty acids. The nutrients are then transported to the liver and other parts of the body for use.

The function of villi in humans is to increase the surface area of the small intestine, which allows for more efficient absorption of nutrients from digested food.

Villi are finger-like projections that line the walls of the small intestine, and they are covered in tiny microvilli that further increase the surface area. The villi contain blood vessels and lymphatic vessels that absorb nutrients such as sugars, amino acids, and fatty acids from the digested food.

These nutrients are then transported to the liver and other parts of the body for use. Without villi, the surface area of the small intestine would be much smaller, and the body would not be able to absorb nutrients as efficiently. Hence, option C is correct.

Find more on villi structures:

https://brainly.com/question/15522849

#SPJ7

Answer:

5 meters

Explanation:

4  and  3   are legs of a right triangle with the hypotenuse = displacement

Use Pythagorean theorem

4 ^2 + 3^2 = (displacement)^2

displacement = 5 m

The displacement of the object that moved 4 meters north, then 3 meters east is 5 meters.

Displacement is change in the position of an object. It can be described as the shortest distance between the initial and final position of an object.

The displacement of the object is calculated as follows;

d² = 4² + 3²

d² = 25

d = 5 m

Thus, the displacement of the object that moved 4 meters north, then 3 meters east is 5 meters.

Learn more about displacement here: https://brainly.com/question/2109763

#SPJ2

The correct answer from each drop-down menu is thermal energy moves from A to B by conduction the heat transfer will continue until the liquid in B reaches the same temperature as the liquid in A.

Good thermal conductors have an atomic or molecular arrangement that has the property of transferring heat to nearby atoms or molecules until the entire object is in thermal equilibrium. To understand better, let's take a metal bar as an example, which is a good thermal conductor.

In this case, the  thermal energy moves from A to B by conduction the heat transfer will continue until the liquid in B reaches the same temperature as the liquid in A.

See more about thermal energy at brainly.com/question/11278589

#SPJ4

Answer:

White light contains yellow, green, and blue - only the blue light will be reflected giving the blue color.

So the green and yellow light thru the filter will not be reflected and the fabric will still appear blue.

blue is correct