it took 3.5 hours for a train to travel a distance between two cities at a velocity of 120 miles per hour how many miles Live between the two cities ​

Answer:

We now introduce two concepts useful in describing heat flow and temperature change. The heat capacity ( C ) of a body of matter is the quantity of heat ( q ) it absorbs or releases when it experiences a temperature change ( ΔT ) of 1 degree Celsius (or equivalently, 1 kelvin)

C=qΔT(12.3.1)

Heat capacity is determined by both the type and amount of substance that absorbs or releases heat. It is therefore an extensive property—its value is proportional to the amount of the substance.

For example, consider the heat capacities of two cast iron frying pans. The heat capacity of the large pan is five times greater than that of the small pan because, although both are made of the same material, the mass of the large pan is five times greater than the mass of the small pan. More mass means more atoms are present in the larger pan, so it takes more energy to make all of those atoms vibrate faster. The heat capacity of the small cast iron frying pan is found by observing that it takes 18,140 J of energy to raise the temperature of the pan by 50.0 °C

Explanation:

Answer:

Angle - 120 degrees, 2.093 radians and 0.33 revolution

Explanation:

Minute hand is on the 12 and the hour hand is on the 4.

The angle formed between 4 and 12 is

[tex]\frac{4}{12} * 360 = 120[/tex] degrees

The angle formed between 4 and 12 in radian is

[tex]\frac{\pi }{180} * 120 = 2.093[/tex] radians

The angle formed between 4 and 12 in revolution is

[tex]\frac{2.093 }{2 \pi } \\= \frac{2.093 }{2* 3.14} \\= 0.33[/tex] revolution

Answer:

180KJ

Explanation:

power=Energy/time

power=600watts, time=5minutes=60*5=300 seconds

therefore;Energy=power*time= 600* 300

=180,000joules

OR

180Kilojoules

Answer:

Yes, it is correct : )

Explanation:

Hope this helps!

Answer:

yes, this is correct.

Explanation:

Answer: Polar and Nonpolar

Polar molecules occur when there is an electronegativity difference between the bonded atoms.

Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out

Answer:

2N

Explanation:

Given that a student pulls down with a force of 40 N on a rope that winds around a pulley of radius 5 cm. find the torque?

Solution

Using the formula

Torque = Force × radius

I.e

Torque = F r

Where

F = 40N

r = 5 cm = 5/100 = 0.05m

Substitute all the parameters into the formula

Torque = 40 × 0.05

Torque = 2 N

Therefore, the torque on this scenario is 2 N

Answer:

Kinetic Energy = 1/2mv^2

Kinetic Energy = 1/2(150 kg)(20 m/s)^2

Kinetic Energy = 75 kg(400 m/s)

Kinetic Energy = 30000 J

Let me know if this helps!

Answer:

The answer is most likely C.

Ready-to-eat foods are stored at the top of the fridge, away from raw foods so that harmful bacteria cannot transfer from the raw food to the cooked food. Raw meat, poultry and fish in sealed containers to stop them touching or dripping onto other foods.

Answer:

Explanation:

uncovered

Answer:

yes

Explanation:

good job

Answer:If you mean how much heat it can transfer as a thermal mass - in order to move heat from one place to another:

Typically the relationships are given by specific heat capacity (at different temperatures) and latent heats, plus the end-point temperatures to determine which of these conversion factors are relevant.

If time comes into it, you are looking at including shape and thermal conductivity at the minimum, so you really would need to be more specific

Explanation:

Answer:

Amplitude

The amplitude ( ) of a wave is the distance from the centre line (or the still position) to the top of a crest or to the bottom of a trough .

Explanation:

Hope it helps

The distance traveled by a wave crest in a given time is defined as: D. speed.

A wave can be defined as a disturbance in a medium that progressively transport energy from a source to another location, especially without the transportation of matter.

Some examples of the characteristics of a wave include the following:

In Science, speed refers to the distance traveled by a wave crest in a given time.

Read more on wave here: https://brainly.com/question/19250621

Answer:

Oxygen is an element that can be a solid, liquid or gas depending on its temperature and pressure. In the atmosphere it is found as a gas, more specifically, a diatomic gas. This means that two oxygen atoms are connected together in a covalent double bond.

Answer:

The magnitude of magnetic force between the two parallel wires is 1.13 N.

Explanation:

Given;

length of each wire, l = 31 m

distance between the two parallel wires, r = 0.155 m

current on each wire, I = 168 A

The magnitude of magnetic force between the two parallel wires is calculated as;

[tex]F = \frac{\mu _oI_1I_2 L}{2\pi r} \\\\F = \frac{(4\pi \times 10^{-7}) \times (168)^2 \times (31)}{2\pi \times 0.155} \\\\F = 1.13 \ N[/tex]

Therefore, the magnitude of magnetic force between the two parallel wires is 1.13 N.

Answer:

GPE = 388.08 Joules.

Explanation:

Given the following data;

Mass = 0.550kg

Speed = 335 m/s

Height = 72 meters

We know that acceleration due to gravity, g is equal to 9.8 m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

[tex] G.P.E = mgh[/tex]

Where;

G.P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the formula, we have;

[tex] G.P.E = 0.550 * 9.8 * 72[/tex]

GPE = 388.08 Joules.

1.25m

hope this is what you needed

Answer:

B: Solids

Explanation:

I have notes from EDG and I looked it up on the internet

I hope this helps

In the solids, convection can not occur. Convection can only be done in the fluids.

Under the effect of gravity, hotter, less dense material rises while colder, denser stuff sinks, resulting in heat transfer"Convection is the ultimate mode of energy transmission to the surface"

There are three modes of the heat transfer;

1. Conduction

2. Convection

3. Radiation

Convection occurs in the fluid which is liquid and gases. Convection never occurs in the solid.

Hence option B is correct.

To learn more about the convection refer to the link;

https://brainly.com/question/16635311

Answer:

C. Radioactive decay

Explanation:

Answer:

Radioactive Decay

Explanation:

Ap3x

Answer:

A, C

Explanation:

In order for a box to be moving at constant velocity, that means acceleration must be 0(as the speed isn't increasing). Thus, since F = ma, and a is 0, the net force must also be 0. The diagram must be completely balanced in every direction, which is why the two horizontal arrows must be equal values.

C is also true because gravity is a stronger force here than the applied force. We can calculate the force due to gravity with Fgravity = mg. Thus, we get the force as a result of gravity = 9.8*50, which is around 500N and much larger than the applied force of 200N.

Answer:

A change in pressure

Explanation:

This is because, the deeper you dive, the height of water above you creates a pressure on you. So, as the depth increases, the height of water increases, thus its weight on you, thus its pressure on you also.

Also, as you gain altitude as you climb a mountain, the height of air above you decreases. This thereby decreases the weight of air above you thus, decreasing the pressure of air on you.

So, in both cases, there is a change in pressure as height or depth changes. An increase in height results in decreased pressure and an increases in depth results in increased pressure.

Answer:

C

Explanation:

Each motion of an electron between energy levels is associated with a single, specific amount of energy

Answer:

true

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Answer:

True

Explanation:

A warm-up  revs up your cardiovascular system by raising your body temperature and increasing blood flow to your muscles. Warming up also helps reduce muscle soreness and it lessens your risk of injury. Cooling down after your workout allows for a gradual recovery of pre exercise heart rate and blood pressure.

Answer:

False

Explanation:

The ground or surface cannot give off energy

(correct me if i am worng) :)

Answer:

12 meters and 2 n

Explanation:

16 -  u = 6 (8.0 + 11)

Answer: Newton’s Third Law of Motion

Explanation:

USATestPrep❤️

Answer:

f=1/t is the equation of frqency

Answer:

*The same balloon put into the freezer would be smaller and shriveled.

* The volume decreases as the temperature decreases.

* using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2

V2= 1.54 liters which proves when temperature decreases , volume decreases as well.

Explanation:

The volume increases as the temperature increases, and volume decreases as the temperature decreases.

using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2

Change Celsius to kelvin by adding 273.

2 liters/ 315 K = V2/243 K

Cross multiply and then divide by 315 to find V2

2 liters x 243 K / 315 K = V2

The Kelvin cancels itself out.

486 liters /315=V2

V2= 1.54 liters.

This proves that when the temperature decreases , so does the volume.