An object of mass m = 2.9 g and charge q = +42 µc is attached to a string and placed in a uniform electric field that is inclined at an angle of 30.0° with the horizontal. the object is in static equilibrium when the string is horizontal.
a) find the magnitude of the electric field. b) find the tension in the string. i know a is -mg + sin 30 * qe =0 but i don't know how to solve for it

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James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest