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A sprinter with a mass of 80kg accelerates from 0 m/s to 9 m/s in 3 sec.
a) What is the runners acceleration?
b) What is the net force of the runner?
c) How far does the sprinter go during 3 s?
what is the strength of the electric field 4.0cm from a small glass bead that has been charged to positive 4.0cm?
A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
A ray of light traveling through air encounters a 1.7cm -thick sheet of glass at a 42? angle of incidence. Assume n = 1.5. How far does the light ray travel inside the glass
An 8.m, 220 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50° angle with the ground. How far up the ladder can an 770 N person climb before the la..
For lead 82Pb207 (atomic mass = 206.975880 u) obtain the mass defect in atomic mass units,
A 47 kg person, standing 0.980 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 3.10 m/s relative to the ground. Find resulting angular speed (in rad/s) of the disk.
Suppose the temperature of 4.72 L of ideal gas drops from 351 K to 275 K. (a) If the volume remains constant and the initial pressure is atmospheric pressure, Find the number of moles of gas
The acceleration due to gravity at the surface of a planet is 18 m/s2. find the speed of the satellite to maintain this stable orbit
A sound wave with intensity 20 mW/m2 interferes destructively with a sound wave that has an intensity of 4 mW/m2. What is the intensity of the superposition of the two
Given you have a 1000 kg automobile with an Otto cycle engine, compression ratio of 10. estimate the real engine losses due to friction and drag
The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ. The average rate of electric energy consumption in one house is 1.0 kW. Find the energy consumption and area required by the solar cell
When a current flows in an aluminum wire of diameter 3.29 mm, the drift speed of the conduction electrons is 2.85 × 10-4 m/s. What is the electron current in the wire
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