PHYSICS MIDDLE SCHOOL

Which of the following is powered by nuclear energy?A) aircraft
B) automobiles
C) trains
D) submarines

Answers

Answer 1
Answer:
Submarines. Work on nuclear marine propulsion in the 1940's, and the first reactor started up in the USA in 1953.
Answer 2
Answer: It is only submarines among the options that are powered by Nuclear Energy.
D).

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where is the amount of water vapor in the air likely to be highest, above a desert or a tropical rain forest?

Answers

Desert due to the high temperatures, therefore any water can evaporate and will be in the air as water vapour. In a rainforest it is usually cold so it is less likely that there will be water vapour as there is not much water evaporating.

1. A bicycle and rider with a combined mass of
115 kg are traveling at a speed of 8 m/s. What is the kinetic energy of the bicycle and rider?

Answers

Answer:

3680 J

Explanation:

The kinetic energy of an object is given by:

K=(1)/(2)mv^2

where

m is the mass of the object

v is the speed of the object

In this problem, we have

m = 115 kg is the combined mass of the bycicle and the rider

v = 8 m/s is the speed

Substituting numbers into the formula, we find

K=(1)/(2)(115 kg)(8 m/s)^2=3,680 J

Answer:

3680 J

Explanation:

The kinetic energy of an object is given by:

where

m is the mass of the object

v is the speed of the object

In this problem, we have

m = 115 kg is the combined mass of the bycicle and the rider

v = 8 m/s is the speed

Substituting numbers into the formula, we find

Question 1
Which compounds are both classified as electrolytes?

Answers

The answer is in the picture down \/

Hope this helps you !!!!

Have a nice day/night

What has more thermal energy a small balloon or a large balloon

Answers

Answer:

large balloon

Explanation:

Thermal energy is the amount of energy contained in a system solely by the effect of its temperature. However, this concept should not be confused with that of internal energy. Internal energy, in turn, is defined as the sum of kinetic energy (translational, rotational and vibrational) with the different forms of potential energy (attractive or repulsive) that can exist between the molecules of a body.

Kinetic energy is associated with the movement of molecules, while potential energy is energy that can be stored in a physical system. In the case of balloons filled with air or liquids, the larger the balloon, the greater the kinetic potential and consequently the thermal energy. For example, a large balloon filled with air will have more thermal energy, because it will have more air molecules that will move through the kinetic energy causing thermal energy.
The average kinetic energy of these individual particles causes an effect we can sense—warmth. ... The air in the air-filled balloon absorbed thermal energy from the flame and started moving faster. The increased movement of the molecules of air expanded the balloon and plastic of the balloon quickly melted. So the big one

Which wave causes the medium to vibrate only in a direction parallel to the wave's motion?

Answers

longitudinal waves causes the medium to vibrate only in a direction parallel to the wave's motion

Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the substance slow down.

Answers

Explanation:

The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.  

Answer:

Sample Response: The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.

Explanation:

edge answer
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