Category: Physics

What are the three ways that machines make work easier? Background Information. There are three ways simple machines make work easier: by increasing the distance through which force is applied, by changing the direction of applied force, or by multiplying force of speed of the energy applied. When can we say that work done is […]

What is the purpose of being certified as a nurse practitioner? The purpose of AANPCBs nurse practitioner certification programs is to provide a valid and reliable program for nurse practitioners to recognize their education, knowledge, and professional expertise, and to provide a process for validation of an advanced practice registered nurse’s qualifications and knowledge for […]

How can plants grow in soil without many minerals? Using a growing method called “hydroponics,” you can grow plants in a watery solution of mineral nutrients instead of soil. It’s also possible to grow plants hydroponically by placing their roots in a mineral nutrient solution contained in a non-soil material, such as gravel, coconut husks, […]

How far away from a wall should a ladder be? Use the 4-to-1 rule: Make sure the ladder is 1 foot away from the wall for every 4 feet that the ladder rises. For example, if the ladder touches the wall 16 feet above the ground, the feet/base of the ladder should be 4 feet […]

What is a circuit with only one path? A “series” circuit has only one path for the electricity to follow. A “parallel” circuit has two or more paths for the electricity. Does supply of electricity have two way path? That’s because the electricity is now flowing through two paths, instead of one. Think of it […]

How do I know if my room is good acoustics? Walk around the room while listening to the song, and notice how the volume and frequencies differ in various places in the room. This may be subtle or it may be quite noticeable. This will give you a general impression of the acoustics of the […]

How do you round decimals to the nearest tenth? To round a number to the nearest tenth , look at the next place value to the right (the hundredths). If it’s 4 or less, just remove all the digits to the right. If it’s 5 or greater, add 1 to the digit in the tenths […]

What is the formula of constant speed? Formula for constant-speed = Total distance / Total time taken. How do I calculate percentage of a total? To find the percentage of the marks, divide the marks obtained in the examination with the maximum marks and multiply the result with 100. Example 1: If 1156 is the […]

What are three types of sedimentary rock? There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock. Are sedimentary rocks soft or hard? Sedimentary rocks are economically important in that they can easily be used as construction material because […]

What are two examples of vascular seedless plants? Ferns, club mosses, horsetails, and whisk ferns are seedless vascular plants that reproduce with spores and are found in moist environments. What are 4 key traits of seedless vascular plants? What are some characteristics about Seedless Vascular Plants? Seedless vascular plants include ferns, whisk ferns, club mosses, […]