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Two 1.0 kg masses are 1.4 m apart (center to center) on a frictionless table. Each has + 9.6 μC of charge.
A. What is the magnitude of the electric force on one of the masses?'
B. What is the initial acceleration of the mass if it is released and allowed to move?
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. Determine the electric field energy density at P
A forearm accelerates a 3.6-kg ball at 7.0m/s^2 by means of the triceps muscle.If the lever arm is 31cm, find the force that must be exerted by the triceps muscle
q1. a beam of 6 mev electrons passes through a 400 micro-meter thick silicon detector. estimate the energy lost by the
Tritium has a half-life of 12.3 y and can also be used to date organic matter. If the activity of tritium is determined to be 3% of the expected activity, what is the age of the sample
A baseball is hit with a speed of 25m/s at an angle of 45.0 degrees. what horizontal distance does it travel before it lands on the building
A concave mirror is broken into two parts and these parts are separated by a distance if 1 cm.The focal length of the mirror is 10 cm. Find the location of images(in cm),formed by the 2 parts of the mirror. The object is midway between the two pr..
Observe the trajectory of a ball tossed vertically into the air with a goal of height and caught at the same height from which it was tossed. What biomechanical principles do you observe and how do they contribute to the goal of the motion?
Unpolarized light with an intensity of 275 W/m2 passes by the two polarizers whose transmission axes are at an angle of 30.0° with respect to each other. What is an intensity of the light transmitted through both polarizers.
If 42.8 cm of copper wire (diameter = 1.36 mm, resistivity = 1.69 x 10-8?·m) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 11.9 mT/s
1. A car is initially travelling at 30 m/s. The driver hits the brakes and comes to a complete stop in 3 seconds. Assume the acceleration was constant. (a) What force was responsible for the driver decelerating? (b) Draw the full force diagram. Ass..
An automobile has a total mass of 2200 kg. It accelerates from rest to 70 km/h in 40 s. Assume each wheel is a uniform 44 kg disk. find the total kinetic energy of the automobile
A pendulum clock has a period of 0.658 s on Earth. It is taken to another planet and found to have a period of 0.820 s. Find the gravitational field strength on the other planet
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