What is true of scientific models? Scientific models are based on a set of observations. Scientific models can be used for a variety of different purposes. Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made. What use is economic theory? Economic theory is useful since you can […]
How often should a crane be inspected and by whom?
How often should a crane be inspected and by whom? OSHA requires that all active cranes must be inspected once a year at the minimum. However, depending on the cranes usage, additional inspections will be required. Crane inspections fall under two general categories based on the intervals between inspections. How often does a crane need […]
What is the formula of effort distance?
What is the formula of effort distance? The effort distance (also sometimes called the “effort arm”) is shorter than the resistance distance. Mechanical advantage = |Fr/Fe | where | means “absolute value.” Mechanical advantage is always positive. Switch to a 100 gram mass. What is the efficiency of the machine? The efficiency of a machine […]
Does radiation travel at the speed of light?
Does radiation travel at the speed of light? Electromagnetic radiation is a type of energy that is commonly known as light. Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum. How long would it […]
Why is tropical climate good?
Why is tropical climate good? Unlike other types of climate, tropical weather supports the growth of vibrant, fresh produce all year. Being able to enjoy truly fresh food at any time of the year is a benefit that can translate into improved health. Is tropical climate good for health? Warm climates for most of the […]
Does constant velocity mean no acceleration?
Does constant velocity mean no acceleration? If an object is changing its velocity -whether by a constant amount or a varying amount – then it is an accelerating object. And an object with a constant velocity is not accelerating. Is there work with constant velocity? When an object is moving with constant velocity, it means […]
What does the little 2 mean in Co₂?
What does the little 2 mean in Co₂? The subscript 2 represents that two atoms of oxygen combines with 1 atom of carbon to give CO₂. What is the balanced equation of water? 2H2(g) + O2(g) → 2H2O(l ) Chemical equations give the following information about chemical reactions. Chemical equations show the formulas for the […]
What is the difference between Thigmotropism and Thigmotropism?
What is the difference between Thigmotropism and Thigmotropism? Bitter gourd exhibits thigmotropism as its tendrils show directional movement towards the things they happen to touch…. Thigmotropism Thigmonasty It is a directional movement of plant parts in response to touch. It is a non-directional movement of plant parts in response to touch. What is positive tropism […]
Is momentum conserved in a pendulum?
Is momentum conserved in a pendulum? While not all of the energy from the bullet is transformed into kinetic energy for the pendulum (some is used as heat and deformation energy) , the momentum of the system is conserved. In the case of a pendulum total mechanical energy is conserved. Is ballistic pendulum accurate? Ballistic […]
Which is the most efficient cycle?
Which is the most efficient cycle? Carnot Cycle Which engine is most efficient? Wärtsilä 31SG At what RPM is an engine most efficient? In general, the economical band for petrol vehicles is between 1,500 and 2,500 rpm (for diesels it is between 1,300 rpm and 2,000 rpm), and these bands are the same for the […]