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An object of mass m = 3.1 g and charge q = +48 μc is attached to a string and placed in a uniform electric field that is inclined at an angle of 30 degrees with the horizontal. The object is in static equilibrium when the string is horizontal. Find (a) the magnitude of the electric field and (b) the tension in the string.
A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. find the increase in temperature of the nail after 3 blows from the hammer
The terminals of a 0.900V watch battery are connected by a 90.0?m?long gold wire with a diameter of 0.200mm, compute the current in the wire
Two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the following wave function, Determine the wavelength of the interfering waves
A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. What are the original speeds ofthe father
question1a small steel ball bearing with a mass of 30.0 g is on a short compressed spring. while aimed vertically and
An uncharged nonconductive hollow sphere of radius 12.0 cm surrounds a 14.0 µC charge located at the origin of a cartesian coordinate system. A drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. Calculate..
A luminous object is 4.80m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object. How far should the mirror be from the wall?
What force must be applied to 50 kg object to move it downward with acceleration 10 m/s^2 ? What is the direction of the applied force
ball rolls horizontally off the edge of a tabletop that is 1.80 m high. It strikes the floor at a point 1.32 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air? s (b) What was its speed at the i..
Any change of the energy of a system occurs because of
A car accelerates from rest to a kinetic energy of 2.06 x 105 J in a distance of 638 m. How much force did the car's engine deliver to produce this acceleration.
In the quark model of fundamental particles, a proton is composed of three quarks: two "up" quarks, each having charge +2e/3, calculate the potential energy of the subsystem of two "up" quarks
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