A long straight wire is carrying a current of 2.4 A in a region where the magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT and makes a 60
angle with the wire, what is the magnitude of the force on 3.0 m of the wire?
A. 3.2 N
B. 6.5 N
C.
D.
E.
D.
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For flow over a slightly curved isothermal surface, the temperature distribution inside the boundary layer ?t may be approximated by the polynomial
where y is the distance normal to the surface.
(a) By applying appropriate boundary conditions, evaluate the constants a, b, c, and d.
(b) Then obtain a dimensionless relation for the temperature distribution in the boundary layer.
GIVEN
Flow over a slightly curved isothermal surface
Polynomial temperature distribution:
FIND
(a) The values for a, b, c, and d
(b) A dimensionless relation for the temperature distribution in the boundary layer
SKETCH
The lobes of a radio galaxy can be as much as:
A) dozens of light years from the galaxy's nucleus. B) hundreds of light years from the galaxy's nucleus. C) thousands of light years from the galaxy's nucleus. D) millions of light years from the galaxy's nucleus. E) billions of light years from the galaxy's nucleus.
Exhibit 11-1
Two birds of prey hurtling after the same mouse collide in mid-air and grab each other with their talons. Each 250-g bird is flying at 30 m/s at a 60° angle to the ground.
?
?
Use this exhibit to answer the following question(s).
Refer to Exhibit 11-1. What is the magnitude of their velocity, in m/s, immediately after the collision?
A. 0 B. 13 C. 15 D. 26 E. 30
As you go higher and higher above the surface of the earth, the weight of a body __________
Fill in the blank(s) with correct word