Why do negative and positive charges attract? If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced by two electrical charges of opposite polarity. The two charges […]
Is Focal length of concave lens positive or negative?
Is Focal length of concave lens positive or negative? focal length object distance concave mirror positive positive convex mirror negative positive converging lens positive positive diverging lens negative positive What is the focal point of a mirror? The focal point is the point in space at which light incident towards the mirror and traveling parallel […]
Why is the Doppler Radar important?
Why is the Doppler Radar important? Answer: The Doppler radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation. This is called the Doppler Effect and is used to determine whether movement in the atmosphere is horizontally toward or away from the radar, which aides in […]
How do you stop pollution?
How do you stop pollution? On Days when High Particle Levels are Expected, Take these Extra Steps to Reduce Pollution: Reduce the number of trips you take in your car. Reduce or eliminate fireplace and wood stove use. Avoid burning leaves, trash, and other materials. Avoid using gas-powered lawn and garden equipment. What is the […]
How often does the direction of wind change?
How often does the direction of wind change? You notice that the wind changes direction roughly every five minutes from 340° to 360° and back and forth… On other days the time between and the amount (°) of wind shift can be bigger or smaller. What is the direction of wind during winter? During winter, […]
What is the diagonal shape?
How do you find the electric field in a vacuum?
How do you find the electric field in a vacuum? Your field can then be described as E=Ez(x,y,z)ˆz. As an electrostatic field, this must satisfy Gauss’s law, which in vacuum reads ∇⋅E=∂Ez∂z=0, and means Ez cannot depend on the z coordinate. More intuitively, the electric field cannot change its magnitude along its direction in the […]
How do you turn a pie chart into a bar graph?
What causes low water pressure in a house?
What causes low water pressure in a house? For instance, low water pressure throughout your neighborhood is likely an issue that needs to be dealt with by the government or local utility, while low water pressure at a specific appliance can normally be traced back to a clogged aerator or a leak in the water […]
Can you solve 2 equations with 3 variables?
Can you solve 2 equations with 3 variables? When solving systems of equation with three variables we use the elimination method or the substitution method to make a system of two equations in two variables. How do you solve simultaneous equations with 5 variables? For example, x+y+z=44 would be expressed as 1x+1y+1z=44 which is still […]