Category: Physics

What happens when tryptophan is present? When tryptophan is present in the cell, two tryptophan molecules bind to the trp repressor, which changes shape to bind to the trp operator. Binding of the tryptophan–repressor complex at the operator physically prevents the RNA polymerase from binding and transcribing the downstream genes. What time should I take […]

What do water ice and steam have in common? When water freezes, its molecules move farther apart, making ice less dense than water. This means that ice will be lighter than the same volume of water, and so ice will float in water. As some of the water vapor cools, we see it as a […]

What does it mean if a charge is in equilibrium? Equilibrium condition states that the magnitude of force F1 and magnitude of force F2 should be equal to one another. How does the electric field due to an infinite line of charge vary with the distance from the line? We have found that the electric […]

What is the driving force for blood flow? Mean arterial pressure is the force that drives the flow of blood through the circulatory system. Which instrument is used for measurement of blood flow? Blood flow measurement devices are divided into ultrasonic Doppler blood flow meters, laser Doppler blood flow meters and electromagnetic blood flow meters […]

What do you know about the Milky Way? The Milky Way is a large barred spiral galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. These stars form a large disk whose diameter is about 100,000 light years. Our Solar System is about 25,000 light years away […]

What is a good title for a lab report? The title says what you did. It should be brief (aim for ten words or less) and describe the main point of the experiment or investigation. An example of a title would be: “Effects of Ultraviolet Light on Borax Crystal Growth Rate”. If you can, begin […]

What do you mean by efficiency of simple machine is 60%? By the statement, Efficiency of a machine is 60% , it is meant that ‘The work output is 60% of the work input’. If you apply 100J of energy for a machine, it will be able to life load of 60 J only. Is […]

What is the example of physical change and chemical change? Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc. Generally, physical changes do not involve the production of energy. What is the most […]

Is timeout a positive or negative punishment? In Applied Behavior Analysis verbiage (ABA), time out is considered a negative punishment procedure. The “negative” means something is removed and the “punishment” refers to decreasing a behavior. Although time-out can be an effective tool to reduce problem behavior, there are times when time-out is not appropriate. What […]

What is the nature of a real image? Nature of Image Real Image Virtual Image “1. A real image is formed when two or more reflected rays meet at a point in front of the mirror.” “1. A virtual image is formed when two or more rays appear to be coming from a point behind […]