How does an LDR change resistance? The LDR. LDRs (light-dependent resistors) are used to detect light levels, eg in automatic security lights. Their resistance decreases as the light intensity increases. In the dark and at low light levels, the resistance of an LDR is high, and little current can flow through it. Why does the […]
How do you read a spring scale?
How do you read a spring scale? Spring scales measure weight (not mass) in grams….To Use a Spring Scale: Hang the object to be measured from the spring scale hook. Read the grams scale for weight. Read the Newtons scale for force. We will mostly be using Newtons during the module. What can you use […]
Which is the strongest nerve in the body?
Which is the strongest nerve in the body? The sciatic nerve is the largest and longest spinal nerve in the human body. Extending from the lumbar and sacral plexuses in the lower back, the sciatic nerve runs through the buttocks and into the thighs. It delivers nerve signals to and from the muscles and skin […]
What happens when sand is mixed in water?
What are the basic lab safety rules?
What are the basic lab safety rules? The 10 Most Important Lab Safety Rules The Most Important Lab Safety Rule. Know the Location of Safety Equipment. Dress for the Lab. Don’t Eat or Drink in the Laboratory. Don’t Taste or Sniff Chemicals. Don’t Play Mad Scientist in the Laboratory. Dispose of Lab Waste Properly. Know […]
Can momentum be lost to friction?
Can momentum be lost to friction? Nope. The momentum lost from an object due to friction is momentum gained by the thing the object is rubbing against. How do you know if linear momentum is conserved? The law of conservation of momentum says that the momentum of a closed system is constant in time (conserved). […]
What does work frequency mean?
What does work frequency mean? Pay frequency is the amount of time between an employee’s paydays. It determines how often you pay employees. There are four pay frequency options: weekly, biweekly, semimonthly, and monthly. What does salary frequency mean to employees? Over time, the employee takes home the same amount of pay. What are three […]
Can hot water kill the coronavirus disease?
Can hot water kill the coronavirus disease? Taking a hot bath will not prevent you from catching COVID-19. Your normal body temperature remains around 36.5°C to 37°C, regardless of the temperature of your bath or shower.Actually, taking a hot bath with extremely hot water can be harmful, as it can burn you. Who should quarantine […]
How does temperature affect direction of reaction?
How does temperature affect direction of reaction? A decrease in the temperature of a system favors the direction of the reaction that releases heat, the exothermic direction. Therefore, an increase in temperature of the system will favor the forward reaction. Conversely, a decrease in temperature will favor the reverse reaction. How does change in temperature […]
Which is an example of density-independent factor?
Which is an example of density-independent factor? For example, for most organisms that breathe oxygen, oxygen availability is a density-independent factor; if oxygen concentrations decline or breathable oxygen is suddenly made unavailable, such as when oxygen-using plants are covered by rising floodwaters, those organisms perish and populations of the various affected … What do all […]