The energy equivalent of the rest mass of an electron is
Solved
Show answers
More tips
- L Leisure and Entertainment The Best Film of 2010: A Look Back at the Academy Awards...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- L Leisure and Entertainment What to Bring on a Hike? Essential Items to Pack for a Safe and Enjoyable Adventure...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- S Style and Beauty Autotanning: Harmful or Safe?...
- F Food and Cooking 10 Ideas for a Wedding Anniversary Gift...
- H Health and Medicine How to Reduce Sweating in the Heat and Beyond: Say Goodbye to Excessive Sweat...
- F Food and Cooking Do Aphrodisiacs Really Work? Separating Fact from Fiction...
- H Health and Medicine What to Eat to Lose Weight?...
- A Animals and plants How to Teach Your Parrot to Talk?...
Answers on questions: Physics
- P Physics Please help ASAP due soon :( Fill in the blanks to correctly labor the graph...
- P Physics If you live to be 85 then you have 621,960 hours left to live. Four years of these hours you are in high school. The time you spend in the classroom is only 4,680 hours...
- P Physics Why does food have potential energy?I will give brain list to who ever answers....
- P Physics Match the descriptions below to either a spring tide or a neap tide. -smallest tidal range -highest high tides and lowest low tides -occur during quarter moons -occur...
- P Physics HELP!Which process of heat transfer makes milk boil?...
- P Physics What mass of steel (490 J/kg°C) experiences a 10°C temperature change if it receives 1,000 J of energy?...
- P Physics Calculate the moment about the knife-edge (in this balanced condition) of the force due to the weight of the ruler...
- H Health Which statement best describes the effect nicotine has on the central nervous system? A. It acts as a stimulant and causes pleasurable feelings. B. It acts as a sedative...
- C Chemistry Why is the structure of a molecule important to its function? A. The structure of a molecule determines whether bonds will be polar or nonpolar. B. The structure of...
- B Biology A tropical rainforest includes trees, animals, insects, plants, rain, rivers, rocks, soil, and warm, moist air. Which spheres of Earth are represented in a tropical...
Ответ:
energy times mass
Explanation: yeh
Ответ:
The correct option is;
The assertion is correct, but reason wrong
Explanation:
The question is with regards to the relationship between work, energy, power, and velocity
The mass of each of the persons running up the staircase = Different
The time it takes each person to run up the stairs = Equal time
Let, 'm₁' and 'm₂' represent the mass of each of the persons that ran up the stairs and m₁ > m₂
Let 't' represent the equal time it takes then to run up the stairs
Let 'h' represent the height of the stairs
The energy, 'E', it takes to run up the stairs is equal to the potential energy, P.E., obtained at the top of the stairs
P.E. = m·g·h
Where;
m = The mass of the person at an elevated height
g = The acceleration due to gravity = Constant
h = The height reached above ground level
Given that the height reached is the same for both of the persons, we have
For m₁, P.E.₁ = m₁·g·h and for m₂, P.E.₂ = m₂·g·h
Therefore, where, m₁ > m₂, we have;
P.E.₁ > P.E.₂
∴ E₁ > E₂
Power, 'P', is the rate at which energy is expended
∴ Power, P = E/t
∴ P₁ = E₁/t > P₂ = E₂/t
Therefore, the person with the greater mass, 'm₁', uses more power than the person of mass 'm₂', in running up the stairs
Therefore, the assertion is correct
The average velocity, vₐ = (Total distance traveled, d)/(Total time taken, t)
Given that the distance, 'd', covered in running up the stairs by both persons is the same, and the time it takes them to complete the distance, 't', is also the same, we have;
The average velocity of the person with the greater mass m₁ is the same as the average velocity of the person with mass, m₂
Therefore, the reason is wrong
The answer is that the assertion is correct, but reason wrong