Many scientists believe that the current period of global warming is related to increased levels of what?
Answers
Related Questions
A positive charge is placed in an electric field that points west. What direction is the force on the positive particle?
If a particular atom of an element has five protons a neutral atom of this element would have ________ electrons. A. 0 B. 3 C. 5 D. 8
if an object is moving at a constant speed in one direction, what is needed to change its speed or direction?.
If a car goes along a straight road heading west and speeds up from 25 ft/s to 60 ft/s in 5 s, calculate the acceleration.
A. 0°C
B. 0 C
C. 0°K
D. 0 K
Answers
Your answer is going to be 0 degrees Kelvin!
This is really sneaky. Of course it's going to be "Absolute Zero" ... the bottom of the Kelvin scale ... but what in the world is the difference between choice-C and choice-D ? ?
On the Kelvin scale, just to be different I guess, the unit of temperature is not called "the degree" Kelvin. On that scale, the unit is called "the Kelvin", and the temperature is called 'so many' "Kelvins".
So the correct choice is D ... "zero Kelvins".
2. no troughs
3. long wavelengths
4. short wavelengths
Answers
I think it #3(not Sure) I think Its because of their long wavelengths that tsunamis behave as shallow-water waves.
Answers
The given system is a constant pressure systemwhere the work done is the product of the pressure and the volume change.
- The volume to which the gas expands to is approximately 11 liters
Reasons:
Given parameters;
The original volume, V₁ = 40 cm³
The energy released, E = 950 J
Constant pressure applied, P = 650 torr.
Condition: All energy is converted to work to push back the piston
Required:
The volume to which the gas will expand
Solution;
The work done, W = Energy releases, E = 950 J
Work done at constant pressure, W = P·(V₂ - V₁)
Where;
V₂ - The volume to which the gas will expand
Converting the volume to from cm³ to m³ gives;
V₁ = 40 cm³ = 0.00004 m³
Converting the pressure given in torr to Pascals gives;
650 torr. = 86659.54 Pa.
Therefore, we get;
950 J = 86659.54 Pa. × (V₂ - 0.00004 m³)
Converting to liters gives;
- The volume to which the gas expands, V₂ ≈ 11 liters.
Learn more here:
Answer:
The volume needed to expand the gas is = 11 Lit = 11000 
Explanation:
Given :
Initial volume Lit.
Energy J = 9.38 Lit × atm. ⇒ ( 1 Lit×atm. = 101.325 J )
Pressure 650 torr = 0.855 atm. ⇒ ( 1 torr = 0.00132 atm )
In this example we have to be aware of unit conversion system.
From the laws of thermodynamics,
Here in this example, all the energy of combustion is converted into work to push back the piston
Lit =
B. Unlike junction diodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit.
C. Unlike point-contact diodes, junction diodes utilize a point of metal wire in contact with a single wafer of P-type or N-type material.
D. Junction diodes are preferred over point-contact diodes for most purposes.
Answers
Answer;
D. Junction diodes are preferred over point-contact diodes for most purposes.
Junction diodes are preferred over point-contact diodes for most purposes; accurately describes semiconductor diodes.
Explanation;
-Semiconductor diodes are specialized electronic components with two electrodes called the anode and the cathode, that are made with semiconductor materials such as silicon, germanium, or selenium.
-Point contact diode is formed by touching a metallic wire with an N-type semiconductor to form a small area of contact.
-A p-n junction diode is two-terminal or two-electrode semiconductor device, which allows the electric current in only one direction while blocks the electric current in opposite or reverse direction. Junction diodes are preferred over point-contact diodes for most purposes.
Unlike junctiondiodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit accurately describes semiconductor diodes. Correct option is B.
Semiconductor diodes are electronicdevices that allow current to flow in one direction only. They are made of semiconductor materials and have different types based on their construction. The options given describe the differences between point-contact diodes and junction diodes:
A. Point-contact diodes are more likely to be used as rectifiers than junction diodes.
This statement is not accurate. Rectifier diodes are commonly junction diodes, not point-contact diodes. Junction diodes are widely used as rectifiers in various electronic circuits.
B. Unlike junction diodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit.
This statement is accurate. Point-contact diodes have a sharp metal point in contact with a semiconductor material, and they are typically enclosed in a protective casing with terminals for easy integration into electronic circuits.
C. Unlike point-contact diodes, junction diodes utilize a point of metal wire in contact with a single wafer of P-type or N-type material.
This statement is not accurate. Junction diodes are formed by the junction of P-type and N-type semiconductor materials, and they do not use a metal wire for contact.
D. Junction diodes are preferred over point-contact diodes for most purposes.
This statement is not entirely accurate. The preference between junction diodes and point-contact diodes depends on the specific application. Junction diodes are more commonly used in modern electronic circuits due to their superior performance and ease of fabrication. Point-contact diodes are older technology and are not as widely used today. However, there might still be some specific applications where point-contact diodes could be preferred.
To know more about semiconductor diodes;
#SPJ6
Answers
If the given amount of time is, say, 'Q' seconds, then the number of waves
that pass a point in the given amount of time is (Q) times (the frequency).
Frequency is the number of waves that pass a given point in a certain amount of time.
B) mechanical motion.
C) heat and light energy.
D) electrical and heat energy.
Answers
As per the question the crumpled paper was burnt .
When the paper was burnt,it produces light.One also feels the sensation of heat.
The electrical energy is due to the flow of electrons. Here no electronic motion takes place.Hence no electrical energy will be produced.
Mechanical energy is the sum total of kinetic and potential energy.The kinetic energy is the energy gained due to the motion of the body and potential energy is the energy gained due to the position or configuration of the body.
Hence from above,we can get that the correct answer to the question is-C] Heat and light energy.