Two long, parallel wires arc separated by a distance of 0.400 m ( Fig. E28.29 ). The currents I 1 and I 2 have the directions shown, (a) Calculate the magnitude of the force exerted by each wire on a 1.20-m length of the other. Is the force attractive or repulsive? (b) Each current is doubled, so that I 1 becomes 10.0 A and I 2 becomes 4.00 A. Now what is the magnitude of the force that each wire exerts on a 1.20-m length of the other? Figure E28.29
Two long, parallel wires arc separated by a distance of 0.400 m ( Fig. E28.29 ). The currents I 1 and I 2 have the directions shown, (a) Calculate the magnitude of the force exerted by each wire on a 1.20-m length of the other. Is the force attractive or repulsive? (b) Each current is doubled, so that I 1 becomes 10.0 A and I 2 becomes 4.00 A. Now what is the magnitude of the force that each wire exerts on a 1.20-m length of the other? Figure E28.29
Two long, parallel wires arc separated by a distance of 0.400 m (Fig. E28.29). The currents I1 and I2 have the directions shown, (a) Calculate the magnitude of the force exerted by each wire on a 1.20-m length of the other. Is the force attractive or repulsive? (b) Each current is doubled, so that I1 becomes 10.0 A and I2 becomes 4.00 A. Now what is the magnitude of the force that each wire exerts on a 1.20-m length of the other?
2. A projectile is shot from a launcher at an angle 0,, with an initial velocity
magnitude vo, from a point even with a tabletop. The projectile hits an apple atop a
child's noggin (see Figure 1). The apple is a height y above the tabletop, and a
horizontal distance x from the launcher. Set this up as a formal problem, and solve
for x. That is, determine an expression for x in terms of only v₁, 0, y and g.
Actually, this is quite a long expression. So, if you want, you can determine an
expression for x in terms of v., 0., and time t, and determine another expression for
timet (in terms of v., 0.,y and g) that you will solve and then substitute the value of
t into the expression for x. Your final equation(s) will be called Equation 3 (and
Equation 4).
Draw a phase portrait for an oscillating, damped spring.
A person is running a temperature of 41.0°C. What is the equivalent temperature on the Fahrenheit scale? (Enter your answer to at least three significant figures.)
°F
Chapter 28 Solutions
University Physics with Modern Physics, Volume 1 (Chs. 1-20) (14th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
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