What is the average force on the ball? Using Newton’s second law we can estimate the average force acting on the ball during the hit: Plugging in the numbers we find the average force to be Favg=18,436 N, which is equivalent to 4124 lbs of force. How much force did the racket exert on the […]
What happens if you go too deep underwater?
What happens if you go too deep underwater? As you descend, water pressure increases, and the volume of air in your body decreases. This can cause problems such as sinus pain or a ruptured eardrum. As you ascend, water pressure decreases, and the air in your lungs expands. This can make the air sacs in […]
How far does the tip of the minute hand of a clock move in 20 minutes if the hand is 5 inches long?
Can salt give you acid reflux?
Can salt give you acid reflux? Consuming table salt or salty foods may increase reflux, a risk factor for heartburn. For instance, one study found that people who added table salt to their meals had a 70% higher risk of reflux than people who never added salt. What is the strongest medicine for GERD? Prescription-strength […]
How do you tell if a capacitor has failed?
How do you tell if a capacitor has failed? Use the multimeter and read the voltage on the capacitor leads. The voltage should read near 9 volts. The voltage will discharge rapidly to 0V because the capacitor is discharging through the multimeter. If the capacitor will not retain that voltage, it is defective and should […]
How does friction affect total mechanical energy?
How does friction affect total mechanical energy? Mechanical energy is reduced due to friction and converted to heat. This is the reason why there is an increase in temperature in objects that move against each other. The role of friction in a closed system is to convert a part of the total energy to heat. […]
What are the 5 critical thinking questions?
What are the 5 critical thinking questions? I want to share five important questions that I learned, that each of us can ask in order to exercise our critical thinking skills….The questions are as follows: What are the issue and the conclusion? What are the reasons? What are the assumptions? Are there any fallacies in […]
Can airbags kill you?
Can airbags kill you? Not only can the airbag can seriously injure you, it can kill you. Second and third generation airbags, even though, they have been de-powered from the mid 1990’s, still deploy outward at 300 mph. A deploying airbag has the explosive equivalent of 20 shotgun shells. This can cause neck fractures and […]
What are the three types of accumulators?
What are the three types of accumulators? Depending on separating elements, we can distinguish three types of hydraulic accumulators: bladder accumulators, diaphragm accumulators, and piston accumulators. What is the purpose of accumulator? Accumulator is a pressure vessel for storing hydraulic pressure in it utilizing compressible and decompressible nature of nitrogen gas. So, it can be […]