Why does cold water have less thermal energy than hot water?

Answers

Answer 1
Answer: This is because the water molecules have less kinetic energy.

Related Questions

An electromagnetic am band radio wave could have a wavelength of?1) .005m 2) 5m 3) 500m 3) 5,000,000m
Up to 80% of doctors endorse this project "uses which rhetorical device"
If it takes 50n of force to lift a 450n what is the ma of the machine
Some vehicles, like _____, have different rules for registration and renewal. A. trailers B. coupes C. sedans D. pickup trucks
Which of the options is the best definition of a vector?A.a specific type of imaginary numberB.a quantity with both magnitude and directionC.a magnitude described as a numberD.the magnitude of a value

Which of the following scenarios would cause a sound to stop being produced?A. A molecule moves through its normal position to the opposite side of its normal position.
B. A molecule moves in the same direction as a wave.
C. The vibration results in a molecule moving vertically.
D. The vibration of the point in the medium ends.

Answers

The scenario that would cause a sound to stop being produced is when a molecule moves through its normal position to the opposite side of its normal position. The answer is letter A. This is also known as destructive interference.

D. The vibration of the point in the medium ends.

A jeep-like vehicle has a canvas top that seals around all sides. When the jeep is at rest, the canvas roof is flat and level. If all the windows of the jeep are rolled up, and the jeep is traveling along the road at high speed, how does the canvas roof react?

Answers

When Jeep is in motion the Canvas top is initially flat

so when Jeep is in motion the air at the top of the Jeep is in high speed

while the air inside the jeep is not moving that fast

so as per Bernuolli's Theorem we know

P + (1)/(2)\rho v^2 = constant

so if we increase the speed the pressure will decrease

so the canvas will experience less pressure at the top of canvas while at the bottom it will have more pressure from inside

so the Canvas will bulge outside or curved outside

Answer:

it flops, duh

Explanation:

I own a jeep

Ryan left the science museum and drove south at 53 km/h. How far has he traveled after 8 minutes

Answers

Answer:

7 km

Explanation:

53 km in 1 hour/ 60 minutes. .89 km a minute.

how much time would it take for an airplane to reach its destination if it traveled at an average speed of 790 kilometers/hours for a distance of 4700 kilometers? what is the airplanes speed in miles/hours?

Answers


If the airplane covered 790 kilometers along the ground every hour,
and if it could keep that up, and if there was no wind, and if the
airplane pointed its nose directly toward its destination and never
zigged or zagged even the slightest bit, then it would cover
790 kilometers of the distance during the first hour, another
790 kilometers of the distance during the second hour, another
790 kilometers of the distance during the third hour, 790 more
kilometers of the distance during the fourth hour, and so forth
and so on until it had arrived at its destination.

The minimum time it would need for the total trip would be

           (4,700 kilometers) / (790 kilometers per hour) =

                               5.9494... hours (rounded)

                           5hours 56m  57.7seconds  (rounded) .

(790 kilometers) x (1 mile / 1.609344 kilometers) =  490.88 miles (rounded)

t =  ( \Delta S)/( \Delta V)  \n  \n t =  (4700)/(790) \n  \n t  \approx   5.95 hours.

1 kmph is approx. 0.6214 mph.
Then.. 790 will be approx. 490 mph.

The centripetal force acting on a satellite in orbit A. acts as an unbalanced force on the satellite.
B. changes the direction of the satellite.
C. is a center-directed force.
D. all of the above

Answers


The centripetal force (of gravity) on a satellite in orbit is an
unbalanced force (because there's no equal force pulling
the satellite away from Earth), changes the direction of the
satellite (into a closed orbit instead of a straight line), and
always acts toward the center of whatever curve the satellite
happens to be on at the moment.

Answer : (D) " all of the above "

Explanation :

The forces acting on a satellite are Earth's gravitational force and centripetal force. The properties of centripetal force acting on a satellite in orbit are as follows :

(1) It acts as an unbalanced force on the satellite. This is due to the reason that there is no same force present which pulls the satellite away from the earth.

(2) It changes the direction of the satellite. The satellite is revolving with a constant speed while the direction is kept on changing (in a circular motion).

(3) Centripetal force always acts towards the center.

So, the correct option is (D) " all of the above "

Match the physical properties on the left with their descriptions on the right. 1. luster ability to dissolve in another substance 2. freezing point the shininess of a material 3. viscosity temperature at which a liquid becomes a solid 4. solubility able to be pulled into a wire 5. ductility the measure of a substance's resistance to flow

Answers

Answer :

1) Luster →  the shininess of a material

2) Freezing point → temperature at which a liquid becomes a solid

3) Viscosity → the measure of a substance's resistance to flow

4) Solubility → ability to dissolve in another substance

5) Ductility → able to be pulled into a wire

Explanation :

Luster : It is defined as the material which has the shining property.

Freezing point : It is the temperature at which the phase changes from liquid state to solid state at low temperature.

Viscosity : It measures the resistance of the liquids to flow .

Solubility : It is defined as the ability of a substance (solute) to dissolve into a liquid (solvent).

Ductility : It is defined as the ability of a metal into a thin wire without breaking.

Final answer:

The physical properties are correctly matched as: Luster corresponds to the shininess of a material, freezing point is the temperature at which a liquid becomes solid, viscosity is the measure of a substance's resistance to flow, solubility is the ability to dissolve in another substance, and ductility refers to a substance's ability to be pulled into a wire

Explanation:

The correct matches for the physical properties and their descriptions are as follows:

  1. Luster is the shininess of a material.
  2. Freezing point is the temperature at which a liquid becomes a solid.
  3. Viscosity is the measure of a substance's resistance to flow.
  4. Solubility is the ability to dissolve in another substance.
  5. Ductility is the property to be pulled into a wire.

It's crucial to understand these properties in chemistry, as they help us identify and characterize different substances.

Learn more about Physical Properties here:

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