Category: Physics

Which one of the following accurately describes the force of gravity? 1 Answer. The gravity acceleration is in the same direction as the force of gravity, and thus toward the center of the earth accurately describes the force of gravity. Which of the following does not accurately describe the universal gravitational law? Gravitational force is […]

Is it OK to do push ups every day? Doing pushups every day can be effective if you’re looking for a consistent exercise routine to follow. You will likely notice gains in upper body strength if you do pushups regularly. You can also follow a “pushup challenge“ where you gradually increase the number of pushups […]

Does calcium reacts vigorously with water? Calcium, for example, reacts fairly vigorously with cold water in an exothermic reaction. Bubbles of hydrogen gas are given off, and a white precipitate (of calcium hydroxide) is formed, together with an alkaline solution (also of calcium hydroxide – calcium hydroxide is slightly soluble). Why is the reaction of […]

Do arrows kill instantly? A person shot with an arrow is unlikely to die instantly, or even particularly quickly. An important part of hunting, even with a gun, is tracking the animal after it’s dead. Even deer, which are not as big or tough as humans, do not die as soon as the arrow passes […]

What are the advantages and disadvantages of full wave rectifier? Advantages of full-wave rectifier: The ripple frequency is two times the input frequency. Efficiency is higher. The large DC power output. Ripple factor is less. The ripple voltage is low and the higher frequency in case full-wave rectifier so simple filtering circuit is required. Higher […]

What is 3rd Quarter Moon? The Third Quarter Moon is when the opposite half of the Moon is illuminated compared to the First Quarter. The Third Quarter Moon is the last of the four primary Moon phases. How does the third quarter moon affect us? In the third quarter, we see what looks like the […]

Why are nuclear reactions so powerful? First, despite being limited to a range of the diameter of a medium-sized nucleus, the strong nuclear force is 137 times more powerful than the electromagnetic force at a given distance. [1] Therefore, much more energy is stored between nucleons than between an electron and a proton. Why is […]

Are metals more conductive when heated? This property varies across different types of metal and is important to consider in applications where high operating temperatures are common. In pure metals, thermal conductivity stays roughly the same with increases in temperature. However in alloys the thermal conductivity increases with temperature. When a metal is melted Does […]

What is the magnitude of a point charge chosen so that? ) What is the magnitude of a point charge chosen so that the electric field 50cm away has magnitude – 2.0 N/C? . (Ans: 3 x 10-1°C) What is the magnitude of a point charge chosen so that the electric field 75.0 cm away […]

What is the process of classical conditioning? Classical conditioning definition Classical conditioning is a type of learning that happens unconsciously. When you learn through classical conditioning, an automatic conditioned response is paired with a specific stimulus. This creates a behavior. How is time important in classical conditioning? Timing is important for conditioning to occur. Typically, […]