Why must a voltmeter must be connected in parallel with a resistor? Voltmeter is connected in parallel with circuit elements because it is used to measure the device’s voltage. If it’s connected in series then it will change the value of potential difference which will minimise the current in the circuit as it has very […]
How do select committees work?
How do select committees work? A select committee is made up of around 11 or so Members of Parliament drawn from all political parties. These politicians combine their efforts to pick apart and examine every area of work carried out by the department they are scrutinising. The Government then have two months to respond to […]
How old is the salt we eat?
Do RGB LEDs use a lot of power?
Can a quantity have unit but still has no dimensions?
Can a quantity have unit but still has no dimensions? Answer. No, a quantity can’t have dimensions without having unit because dimensions are derived from units but the inverse isn’t true. A quantity can have unit without having dimensions. Can a quantity have two sets of dimensions? Yes, most definitely! The dimension of a physical […]
What are 4 key points to properly successfully perform a forehand?
What are 4 key points to properly successfully perform a forehand? The four parts of a forehand swing are ready, turn, swing, and hit. Tennis writer and coach Peter Fryer says: “First, get into position with the racket in front of you, your knees slightly bent, and your weight on the balls of your feet. […]
How can you tell the difference between polar and nonpolar bonds?
How can you tell the difference between polar and nonpolar bonds? Bonds that are partly ionic are called polar covalent bonds. Nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal. The result is a bond where the electron pair is displaced toward the more […]
Which statement best describes the relationship between changes in air pressure and wind speeds?
Which statement best describes the relationship between changes in air pressure and wind speeds? The rule in the movement of the air masses is very simple, the high pressure air masses always move towards the lower pressure air masses. The smaller the difference in the air pressures, the lower the wind speed, and vice versa, […]
Is God good paradox?
Is God good paradox? The God paradox is a good example of a philosophical problem. Can Allah create a rock he Cannot lift? God is omnipotent, i.e. God can do anything which is logically possible. Making a stone which is so heavy that it cannot be moved is logically possible. Therefore God, being omnipotent, can […]
How do humans affect the landscape?
How do humans affect the landscape? Many human activities increase the rate at which natural processes, such as weathering and erosion, shape the landscape. The cutting of forests exposes more soil to wind and water erosion. Pollution such as acid rain often speeds up the weathering, or breakdown, of the Earths rocky surface. What are […]