Identify X in the following nuclear reactions:
(a) ^1H + ^9Be = X + n;
(b) ^12C + ^1H = X;
(c) ^15N + ^1H = ^4He + X.
Appendix F will help.
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How much kinetic energy will an electron gain (in joules and eV) if it accelerates through a potential difference of 18,500 V?
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The figure gives the acceleration of a volunteer’s head and torso during a rear-end collision. At maximum head acceleration, what is the speed of (a) the head and (b) the torso?
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A 2.50-μF capacitor is charged to 746 V and a 6.80-μF capacitor is charged to 562 V. These capacitors are then disconnected from their batteries. Next the positive plates are connected to each other and the negative plates are connected to each other. What will be the potential difference across each and the charge on each? [Hint: Charge is conserved.]
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The position of a particle moving along an x axis is given by
x = 12t^2 - 2t^3, where x is in meters and t is in seconds. Determine (a)
the position, (b) the velocity, and (c) the acceleration of the particle at
t = 3.0 s. (d) What is the maximum positive coordinate reached by
the particle and (e) at what time is it reached? (f) What is the maximum positive velocity reached by the particle and (g) at what time is
it reached? (h) What is the acceleration of the particle at the instant
the particle is not moving (other than at t = 0)? (i) Determine the average velocity of the particle between t = 0 and t = 3 s.
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A horizontal force of 310 N is exerted on a 2.0-kg ball as it rotates (at arm’s length) uniformly in a horizontal circle of radius 0.90 m. Calculate the speed of the ball.
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A light plane must reach a speed of 35 m/s for takeoff. How long a runway is needed if the (constant) acceleration is 3.0 m/s^2?
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What is the magnitude of the momentum of a 28-g sparrow flying with a speed of 8.4 m/s?
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(a) Calculate the total force of the atmosphere acting on the top of a table that measures 1.7 m x 2.6 m. (b) What is the total force acting upward on the underside of the table?
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