Physics, 06.09.2019 01:20, cami30031cami3003
Galileo used his pulse for the measurement of time. measure the time between your heartbeats after sitting quietly for a few minutes to the nearest 0.1 s. you can obtain that level of precision with an ordinary analog clock by counting several pulses and dividing the elapsed time by the number of pulses. speed is the distance you traveled divided by the time that elapsed while you traveled that distance.
a.)predict your unhurried walking speed. count off 10 steps, counting your heartbeats as you walk, to measure your walking speed in paces per beat and test your prediction.
b.)the length of your step contained some uncertainty when you measured it. your measurement of time contains some uncertainty. use these to estimate how much uncertainty there is in your measurement of your walking speed. report your measurement in meters per second and include uncertainty.
Answers: 3
Physics, 22.06.2019 05:50, kamrulh278
Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32Ã10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^â1 mol^â1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022Ã10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?
Answers: 3
Physics, 22.06.2019 12:00, P4thing
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 15:00, ttorres013
Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14ÏÏĩ0. d)the ball will oscillate along the z axis between z=d and z=âd in simple harmonic motion. what will be the angular frequency Ï of these oscillations? use the approximation dâŠa to simplify your calculation; that is, assume that d2+a2âa2. express your answer in terms of given charges, dimensions, and constants
Answers: 2
Galileo used his pulse for the measurement of time. measure the time between your heartbeats after s...
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