Answers about Physics > 자유게시판

A heating curve shows the relationship between temperature and heat added to a substance. During phase changes, the temperature remains constant as the added he
Read more









Units of Measure



+2








Which type of energy is defined as the work needed to accelerate a body of a given mass from rest its current velocity?

Asked by Wiki User



Kinetic energy is the type of energy defined as the work needed to accelerate a body of a given mass from rest to its current velocity. It is directly proportio
Read more









Physics



+2








Which one of newton's law of motion explains why you may lean sideways in a car if the driver turns a corner to quickly?

Asked by Wiki User



This is explained by Newton's First Law of Motion, which states that an object in motion tends to stay in motion unless acted upon by an external force. As the
Read more









Energy Conservation



+1








Why is earth pit used?

Asked by Wiki User



An Earth pit is used as a grounding system to protect electrical equipment and personnel from electrical faults by safely dissipating excess current into the gr
Read more









Physics



+2








What metals are used in magnets?

Asked by Wiki User



The most common metals used in magnets are iron, nickel, and cobalt. These metals can be alloyed with other elements such as aluminum, copper, and titanium to c
Read more









Home Electricity



+1








What are the Advantages and disadvantages of rectifiers?

Asked by Wiki User



Advantages of rectifiers include converting alternating current to direct current for various applications. On the other hand, disadvantages can include the gen
Read more









Physics



+3








Who named alpha beta gamma rays?

Asked by Wiki User



they are just a b c, its the begining of the Greek alphabet, so it was something to do with the Greeks.Ernest Rutherford arbitrarily named them after the first
Read more









Science



+2








How does liquid becomes solid?

Asked by Wiki User



A liquid becomes a solid through a process called solidification or Rishikesh Resort freezing. As the temperature of the liquid decreases, the particles within the liquid slow d
Read more









Physics



+1








Do solids and liquids have fixed volumes?

Asked by Wiki User



Yes, solids have a fixed volume because their particles are tightly packed together. Liquids also have a fixed volume because their particles are close together
Read more









Physics



+3








Does dirt have cells?

Asked by Wiki User



No, dirt does not have cells. Dirt is a mixture of organic matter, minerals, air, and water, and does not possess cells like living organisms do. Cells are the
Read more









Physics



+1








When do charged particles accelerate in a magnetic field?

Asked by Wiki User



Charged particles accelerate in a magnetic field when they move perpendicular to the field lines. The acceleration causes the particles to undergo circular moti
Read more









Science



+2








How the appearance of the pencil and the change in speed of the light waves relate?

Asked by Wiki User



The appearance of a pencil (e.g., bending when immersed in water) is due to the change in speed of light waves as they pass from one medium to another. This cha
Read more









Science



+2








Where do the light waves change speed from a pencil?

Asked by Wiki User



Light waves change speed when they travel from air into the material of the pencil, and then change speed again when they exit the pencil back into the air. Thi
Read more









Physics



+2








A negatively charged atomic particle is called an electron?

Asked by Wiki User



That is correct. Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They carry a fundamental unit of negative electric char
Read more









Physics



+2








A marble lying in the middle of the floor. use newtons first law to describe what will happen to the marble?

Asked by Wiki User



According to Newton's First Law of Motion, the marble will remain at rest unless acted upon by an external force. In this case, if no external force is applied
Read more









Physics



+1








Suppose you exert a horizontal push on a crate that rests on a level floor and it doesn't move How much friction acts compared with your push?

Asked by Wiki User



The frictional force acting on the crate is equal in magnitude and opposite in direction to your push. If the crate is not moving, the static frictional force i
Read more









Physics



+2








Which has high specific heat monoatomic or diatomic gas?

Asked by Wiki User



Diatomic gas has a higher specific heat compared to monoatomic gas due to the additional degrees of freedom associated with the rotational motion of diatomic mo
Read more









Physics



+2








What is meant by a volume of STP?

Asked by Wiki User



Volume of a gas at STP (standard temperature and pressure) refers to the volume that a gas occupies when measured at a temperature of 0 degrees Celsius and a pr
Read more









Astronomy



+2








How much work is done by earth revolving around the sun?

Asked by Wiki User



The work done by the Earth revolving around the Sun is zero because work is defined as force multiplied by displacement in the direction of the force. Since the
Read more









Solid State Physics



+2








What is dislocation density?

Asked by Wiki User



Dislocation density refers to the density or concentration of crystal defects called dislocations in a material. Dislocations are line defects in the crystal st
Read more









Physics



+1








Which waves are shorter than microwaves and longer than visible light?

Asked by Wiki User



Infrared waves are shorter than microwaves and longer than visible light. They have wavelengths ranging from about 700 nanometers to 1 millimeter.