Category: Physics

What does a negative angular acceleration indicate to you? Negative angular velocity(ω) means that the particle is revolving anticlockwise. Thus, negative angular acceleration(α) is a “push” in the anticlockwise direction. If α and ω have the same sign, the body will speed up, else slow down (and eventually go in reverse). Is clockwise positive or […]

How much forest is cut down for agriculture? Rainforests across the world are in great danger. Food and Agriculture Organization’s 2016 State of the Forests report revealed that 7 million hectares of forest are lost annually while agricultural land expands by 6 million. Does agriculture affect rainforest? Agricultural use of some rainforest land proves to […]

What does the one minute sit up test show in terms of fitness? The 1-minute full sit-ups test is currently being widely used in physical fitness test batteries to assess abdominal strength and endurance. Full sit-ups use the hip flexors as well as the abdominals and have been known to increase anterior pelvic tilt, and […]

Does higher entropy mean more stable? A system which is more disordered in space will tend to have more disorder in the way the energy is arranged as well. The entropy has increased in terms of the more random distribution of the energy. In essence . . . “a system becomes more stable when its […]

What is the formula for calculating efficiency? The formula to calculate work efficiency is the ratio of output to input expressed as a percentage. The work efficiency formula is efficiency = output / input, and you can multiply the result by 100 to get work efficiency as a percentage. How do you calculate the maximum […]

What is diode resistant? Hence, diode resistance can be defined as the effective opposition offered by the diode to the flow of current through it. Ideally speaking, a diode is expected to offer zero resistance when forward biased and infinite resistance when reverse biased. What is the reverse resistance of a diode? Reverse resistance is […]

What is the impedance of RL circuit? Series RL Circuits Therefore, the two voltage drops (VR and VL ) are out of phase, based on the current I. When a sine wave is applied to an RL series circuit, the initial opposition to current flow is a series combination of R and X1. This total […]

What are the major organs and functions of the nervous system? The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. What is […]

Which unit is used for density? grams per cubic centimeter What is the meaning of volume? (Entry 1 of 3) 1 : the degree of loudness or the intensity of a sound also : loudness. 2 : the amount of space occupied by a three-dimensional object as measured in cubic units (such as quarts or […]

Where the exchange of oxygen and carbon dioxide takes place? Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the […]