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A uniform electric field of magnitude E = 200,00 n/c is parallel to the x axis. a 2.0 g object with a charge of + 25 E-9 c is suspended by a string which makes and angle theta. calculate the angle theta? calculate the tension on the string?
Five seconds later, the police officer leaves on her motorcycle, starts her stopwatch, and accelerates at 2 m/s^2 toward the car. According to her stopwatch, how many seconds until she catches the car
A ray of light strikes a plane mirror at a 45° angle of incidence. The mirror is then rotated by 23° in the clockwise direction, while the incident ray is kept fixed. (a) Through what angle does the reflected ray rotate? (b) What is the answer to par..
A prescription for a corrective lens calls for + 3.10 D. Find what the radius of curvature of the other surface
An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. What is her average speed for the round trip
A block of mass 3 kilogram is pushed against a wall by a force perpendicular to the wall. Find the coefficient of static friction between block and wall
A converging lens (f1 = 26.0 cm) is placed 58.0 centimeter to the left of a diverging lens (f2 = -30.0 cm). Determine how far is the object from the converging lens
Radon is a radioactive gas, commonly found in the basement of ahouse. It has a half- life of 3.8 days. What is the decay constant of radon
Visitors at a science museum are invited to sit in a chair to right of a full-length diverging lens (f1 = -3.06 m) and observe a friend sitting in a second chair, 1.84m to the left of the lens.
a basketball player standing near the basket to grab a rebound jumps 72.4 cm vertically.how much time does the player
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
An 0.8kg baseball with an initial velocity of 40m/s is hit with a baseball bat so that its recoil velocity is 60m/s in the exact opposite direction. what is the average force the bat puts on the ball
jamie is playing tennis. a 0.057kg ball is coming towards her at a velocity of -14 ms. after she hits it in the exact
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