Category: Physics

What do different ship horns mean? One short blast = Changing course to starboard (right) Two short blasts = Changing course to port (left) Three short blasts = Operating in reverse. Five short blasts = Danger signal. Two long blasts = Leaving berth. What does it mean when a ship lists? “Listing” is a nautical […]

Why are ice skates slippery? The “slippery” nature of ice is generally attributed to the formation of a thin layer of liquid water generated by friction, which for instance allows an ice skater to “surf” on top of this liquid film. Do skates melt ice? A 150-pound person standing on ice wearing a pair of […]

What is the function of hyphae quizlet? The underground hyphae collect water and nutrients from the ground. What is a cluster of hyphae known as? mycelium. a cluster of interwoven mass of hyphae. aids the fungus in eating and reproduction. septa. What are the types of hyphae? There are two main types of hyphae. Septate […]

What are the condition for system to be in mechanical equilibrium? For an object to be in equilibrium, it must be experiencing no acceleration. This means that both the net force and the net torque on the object must be zero. Here we will discuss the first condition, that of zero net force. What two […]

Which techniques is used to determine the grain size of polycrystalline material? Explanation: Positron annihilation technique is used to measure resistivity after quenching, Thermal imaging this technique is used to measure the concentration of vacancy to determine the activation energy for its formation and Photo micrographic technique is used to determine the grain size of […]

Why does my body lose heat so fast? The body loses heat through: Evaporation of water from your skin if it is wet (sweating). The body loses about 2% of its heat through air conduction. However, water causes more heat loss from the body than air does, so heat can be lost from the body […]

Is it possible to change the polarity of an electromagnet? Yes, we can change the polarity of an electromagnet by reversing the direction of the current. Can electromagnets repel? Electromagnets Repelling an Electromagnet Magnetech opposite pole electromagnets (magnetic pole on each end) can repel each other. There has to be a little air gap between […]

Do the number of cells increase? In general, we grow to our full adult size via an increase in the number — not the size — of our cells. But some of our cells can change size — and this can be for healthy or not-so-healthy reasons. Why does the number of cells increase? Explanation: […]

How do I know if my sensor is working? To test for resistance, set the DVOM to Ohms scale. Unplug the sensor and connect either leads to the DVOM probes. Read the Ohm or resistance values and compare them to those of the manufacturer. If they don’t match, the sensor is defective. How do I […]

What happens to the acceleration at exactly 2 s? Since there is a sudden change in velocity at exactly 2 seconds in a very short amount of time, we say that the acceleration is undefined in this case. What is the highest acceleration of the car? Read our review McLaren P1, BAC Mono – 2.8s. […]