work and energy, Physics

Assignment Help:
a person holds of hay over his head for 30 min and gets tired . has he done some wirk or not? justify your answer

Related Discussions:- work and energy

Lumen, lumen; lm: The derived SI unit of luminous flux, described as t...

lumen; lm: The derived SI unit of luminous flux, described as the luminous flux emitted through a uniform point source of 1 cd emitting its luminous energy on a solid angle of

BIOPHYSICS, 1. Cell growth. if V is the volume of a spherical cell, the...

1. Cell growth. if V is the volume of a spherical cell, then, in certain cell growth or for some fetal growth models, the rate of change of V is given by dV/dt =kV2/3, where k

Explain positive acceleration, POSITIVE ACCELERATION:  If velocity of a...

POSITIVE ACCELERATION:  If velocity of a body is enhancing, then its acceleration is said to be positive. The direction of positive acceleration is similar as that of velocity.

Estimate the frequency of sound, Suppose you blow the top of a bottle and h...

Suppose you blow the top of a bottle and hear a resonance sound (standing wave).  The length of the bottle is about 25cm.  If the speed of sound in air is about 340 cm/sec., what i

1 farad, 1 Farad: One farad is described as the capacity of that capaci...

1 Farad: One farad is described as the capacity of that capacitor which keeps a charge of 1 coulumb, if the potential difference among the plates is one volt. It's equation

Explain the air resistance, Explain the Air Resistance If you drop a fe...

Explain the Air Resistance If you drop a feather and a cannonball at the same time from the same height, which will hit the ground first? The cannonball of course. Why does the

Determine path difference between two light rays, Two light rays will inter...

Two light rays will interfere constructively with maximum amplitude if the path difference between them is: a) one wavelength b) one-half wavelength c) one-qua

What is photo-conductive cell, It is based on the principle that conductivi...

It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as

Determine the net force, Q. While rummaging in her backpack for her cell p...

Q. While rummaging in her backpack for her cell phone, Sally's Mini-Cooper rear ends Joey's Suburban. Sally's car is totaled while the suburban is fine. If Sally's car hit the sub

Demerits of vacuum diode over semiconductor diode, Demerits of Vacuum Diode...

Demerits of Vacuum Diode over Semiconductor Diode (i)  Bigger in size (ii)  Less efficiency (iii)  Expensive

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd