Determine the x-, y-, and z-components of force F which acts on the tetrahedron?
2/120 Determine the x-, y-, and z-components of force F which acts on the tetrahedron as shown. The quantities a, b, c, and F are known, and M is the midpoint of edge AB.
The magnitude of the force F is 800N. How do you determine the horizontal (X) and vertical (Y) components of F?
First, specify the angle. Then read your textbook.EDIT: Sorry, that was a little bit snarky...The magnitude of a vector can be thought of as the hypotenuse of a right triangle. The horizontal and vertical components would be the other two sides.
Electric charges q, q, and -2q are placed at the corners of an equilateral triangle. What’s the magnitude of the electric dipole moment of the system?
Every electric dipole is characterized by its dipole moment. Dipole moment is a vector quantity which always points out from negative to positive point charge. And its magnitude is given by the product of amount of any one charge (out of the two forming dipole) and the separation between the two charges.The given system of point charges in the problem will obviously result into the formation of dipoles as their net summation is zero. The point charge -2q can be split into two charges each -q and thus we get two pairs of q and -q. The resultant dipole moment of the system can be calculated as follows:Regards!
ABC is an equilateral triangle. Charges +q are placed at each corner. What is the electric intensity at O?
May I advise you young students to not to ask text book questions if you are a serious physics .Do not aspire merely to see your name in print in Quora by asking simple questions. I am sure you are JEEE aspirants and therefore tackle typical and conceptual questions to sharpen your skill. If you like my suggestion do shoot back!
What is a dipole moment?
A dipole moment is a measurement of the separation of two opposite electrical charges. Dipole moments are a vector quantity. The magnitude is equal to the charge multiplied by the distance between the charges and the direction is from negative charge to positive charge:μ = q · rwhere μ is the dipole moment, q is the magnitude of the separated charge, and r is the distance between the charges.Dipole moments are measured in the SIunits of coulomb·meters (C m), but because the charges tend to be very small in magnitude, the historical unit for a dipole moment is the Debye. One Debye is approximately 3.33 x 10-30C·m. A typical dipole moment for a molecule is about 1 D.Significance of the Dipole MomentIn chemistry, dipole moments are applied to the distribution of electronsbetween two bonded atoms. The existence of a dipole moment is the difference between polar and nonpolar bonds. Molecules with a net dipole moment are polar molecules. If the net dipole moment is zero or very, very small, the bond and molecule are considered to be nonpolar. Atoms that have similar electronegativity values tend to form chemical bonds with a very small dipole moment.Example Dipole Moment ValuesThe dipole moment is dependent on temperature, so tables that list the values should state the temperature. At 25°C, the dipole moment of cyclohexane is 0. It is 1.5 for chloroform and 4.1 for dimethyl sulfoxide.Calculating the Dipole Moment of WaterUsing a water molecule (H2O), it's possible to calculate the magnitude and direction of the dipole moment. By comparing the electronegativity values of hydrogen and oxygen, there is a difference of 1.2e for each hydrogen-oxygen chemical bond. Oxygen has a higher electronegativity than hydrogen, so it exerts a stronger attraction the electrons shared by the atoms. Also, oxygen has two lone electron pairs. So, you know the dipole moment must point toward the oxygen atoms. The dipole moment is calculated by multiplying the distance between the hydrogen and oxygen atoms by the difference in their charge.Then, the angle between the atoms is used to find the net dipole moment. The angle formed by a water molecule is known to be 104.5° and the bond moment of the O-H bond is -1.5D.μ = 2(1.5)cos(104.5°/2) = 1.84 DHAPPY LEARNING
3 point charges of magnitude +q are at the vertices of an equilateral triangle. What magnitude of charge is in the centroid of the triangle to keep the equilibrium?
Ans: Q = - q /(Underroot 3)
At what angle do three forces of equal magnitude act so that the resultant is equal to zero?
For three forces to nullify each other must be on a plane ( two vectors will always be on a plane , and the vector sum needs to be cancelled by the third vector which needs to be in that plane else there would be an unbalanced component in the fire normal to the plane).Now, since three have same magnitude, one solutions is that they make 120 deg . This is because the for the sum of the vectors to be zero, we can add them as a polygon. Since the magnitude are same, it must be a regular polygon. Since there are three vectors, we must have a equilateral triangle. Here each vector makes 120 deg from the next one in the polygon (consider external angles as they denote how much the next vector is rotated from the previous vector).
What are the 5 different classes of fire and what type of extinguisher can safely be used on each?
Following are five different classes of fire and type of extinguisher used to extinguish these fires:Class A: Class A fires use flammable material as their fuel source. Wood, fabric, paper, trash,and plastics are common sources of Class A fires. Class A fires are commonly put out with water or monoammonium phosphate.Class B: The Class B fire use flammable liquid or gas as its fuel base. For example petroleum based oils and paints, kerosene, and gasoline. Smothering these types of fires to remove oxygen is a common solution to extinguish these types of fires.Class C: The Class C fire use electrical components and energized equipment as its fuel source. Electrical fires are often fueled by motors, appliances, and electronic transformers. To extinguish such fires you cut the power off and use non-conductive chemicals to extinguish the fire.Class D:The Class D fire use combustible metal as its fuel source. Examples of such combustible metals include titanium, magnesium, aluminum, and potassium. To extinguish a Class D fire, use a dry powder agent. This absorbs the heat that fire requires to burn and smothers it as well.Class K: A Class K fire is defined as a cooking fire involving combustion from liquids used in food preparation. Wet chemical fire extinguishers are used to extinguish these types of fires. Fire Extinguisher Products