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a) What force is needed to give amass of 20kg an acceleration of 30m/s2?
b) Find the accelerating force when a car having a mass of 1.7Mg enhances its speed with a constant acceleration of 3m/s2
c) A force of 40N accelerates a mass at 5m/s2.Verify the mass. [8kg]
d) Determine the force acting downwards on a mass of 1500g suspended on a string. [14.72N]
e) A force of 4Nmoves an object 200cmin the direction of the force. What amount of work is done?
(a) Potential energy : An electron operates some potential energy due to this found in the field of nucleus potential energy of electron in nth orbit of radius rn is given by
mathimatical form
si el numero atomico del sodio es 11 y su numero de masa es 22,diga¿cuantos electrones,protones y neutrones respectivamente,tiene su atomo neutro?
Definition of semiconductors Photovoltaic (PV) cells are made of special materials known as semiconductors like as silicon, which is currently the most commonly used. Basically
Q Define: specific rotation? Precise rotation for a given wavelength of light at a given temperature is defined as the rotation produced by one-decimetre length of the liquid c
1. Brief definitions of the study design, sampling strategy, and outcome variable(s) Study design: cross sectional study is carried out at just one point in time or over a sho
Changes Of resistance with temparature: The resistance of all materials changes with changes in temperature. The resistance of all pure metal increases with temperature. The
Q. An aircraft having awing span of 20.48 m flies at a speed of 40 ms -1 . If the vertical component of the earth's magnetic field is 2 X 10 -5 T, compute the emf induced between
a) Formation of domains b) On the basis of domains formed c) These are strongly attracted in an external magnetic field i.e. they easily go from low to high field region d
Assume a crane lifts a 900 kilogram wrecking ball 12 meters above a concrete slab. 105,840 Joules of potential energy are kept in the wrecking ball. Now the ball is dropp
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