How do the chemically synthetic products affect humans and the environment? The increased use of synthetic chemicals, including pesticides and pharmaceuticals to attack unwanted organisms, has outpaced the rates of change in rising atmospheric CO2 concentrations and other agents of global environmental change over the past 45 years, a new Duke-led analysis reveals. What are […]
Why does boiling take place?
Why does boiling take place? As a liquid is heated, its vapor pressure increases until the vapor pressure equals the pressure of the gas above it. In order to form vapor, the molecules of the liquid must overcome the forces of attraction between them. The temperature of a boiling liquid remains constant, even when more […]
What are the three types of unconformity?
What are the three types of unconformity? There are three kinds of unconformities: disconformities, nonconformities, and angular unconformities. Disconformities. Disconformities (Figure 1 ) are usually erosional contacts that are parallel to the bedding planes of the upper and lower rock units. Why is original horizontality important? The Principle of Original Horizontality states that layers of […]
What causes excessive voltage drop?
What causes excessive voltage drop? Excessive dropping is due to increased resistance in a circuit, typically caused by an increased load, or energy used to power electric lights, in the form of extra connections, components, or high-resistance conductors. How much voltage drop is OK? 4) in the National Electrical Code states that a voltage drop […]
Why is accuracy important in chemistry?
Why is accuracy important in chemistry? When taking scientific measurements, it is important to be both accurate and precise. Accuracy represents how close a measurement comes to its true value. This is important because bad equipment, poor data processing or human error can lead to inaccurate results that are not very close to the truth. […]
What is the best file type to save an image as?
How fast does light travel in space?
What is the main differences between a capacitor and a battery?
What is the main differences between a capacitor and a battery? A battery is an electronic device that converts chemical energy into electrical energy to provide a static electrical charge for power. Whereas a capacitor is an electronic component that stores electrostatic energy in an electric field. Can a capacitor act as a battery? So […]
What are the three phases of action potential?
What are the three phases of action potential? The action potential has three main stages: depolarization, repolarization, and hyperpolarization. Depolarization is caused when positively charged sodium ions rush into a neuron with the opening of voltage-gated sodium channels. What is the falling phase of an action potential? Falling Phase. Repolarization of the membrane occurs when […]
What is the best parachute shape?
What is the best parachute shape? circle parachute What forces affect a parachute drop? How large a parachute is (in other words, the parachute’s surface area) affects its air resistance, or drag force. The larger the parachute, the greater the drag force. In the case of these parachutes, the drag force is opposite to the […]