Category: Physics

Is Van de Graaff generator a capacitor? A leyden jar is a storage capacitor which can withstand very large voltages. A van de graaf generator is a charge pump which can generate large voltages, but at very small currents. When you connect a van de graaf to a leyden jar, the jar accumulates the energy […]

What happens if the Senate and House pass different versions of a bill? If the House and Senate pass the same bill then it is sent to the President. If the House and Senate pass different bills they are sent to Conference Committee. Most major legislation goes to a Conference Committee. Why do the House […]

What is a good attack angle? While there are exceptions, this is my basic formula for players in college or pro ball: If the hitter’s peak exit velocity is under 105 mph, their attack angle should be between 5 and 15 degrees. If their peak exit velocity is above 105 mph, it should be between […]

What are the advantages of observation in research? The biggest advantage of observational research has already been noted: it enables businesses to observe potential customers in a natural setting, which can reveal penetrating insights unavailable through other methods such as focus groups and surveys. What are the advantages and disadvantages of a survey? Advantages of […]

Which device is used to indicate the direction of current? The current flows through the ammeter. Note that an ammeter has a very low resistance. How can a DMM be used to determine the direction of flow? When using a multimeter to measure current, the only way that can be used to detect the level […]

What is the minimum velocity needed to transport a cobble? At 10 cm per second [?] is eroded whilst would be deposited. Cobbles are upwards of 170cm per second. Deposition starts to occur at cm per second for particles of approximately 0.01mm in size. Boulders require the smallest velocity for deposition, at only cm per […]

What 3 things does a pedometer measure? Pedometers come in all shapes and sizes. Simple devices simply measure steps, while others also include features such as time, alarm, distance, calories, etc. Are phone pedometers accurate? Accurate pedometers are useful tools to motivate and estimate physical activity. There are today free pedometer applications available for download […]

Can Atom survive without electron? Electrically neutral atoms can exist with no electrons. So an atom can’t have no electrons as it, by definition has protons and to be neutral must have electrons. You can have an ion, such as a hydrogen ion (you might call it a proton). What would happen if an atom […]

What is inside of a ping pong ball? Celluloid is a thermoplastic made from nitrocellulose and camphor. Sometimes dyes and stabilizers are added. A typical ping pong ball might consist of 70% to 80% nitrocellulose, with up to 30% camphor. Small amounts of dye, ethanol, and stabilizers make the ball colorful, more stable, and less […]

In which house is Venus placed in your birth chart? Venus in the 11th House. What are Venus in Cancer attracted to? What Attracts Venus In Cancer Men? Venus in Cancer men are often attracted to a classic feminine ideal. They want someone who is sentimental, gentle, kind, and affectionate—those who have an air of […]