Solve the problem.The kinetic energy E of an electron in a television picture tube is given by 
where E is in joules, m is the mass of the electron in kilograms, and v is its speed in meters per second. Find the kinetic energy of an electron if its speed is 
(The mass of an electron is 
A. 4.37 × 10-19 J
B. 4.46 × 10-24 J
C. 8.75 × 10-17 J
D. 4.37 × 10-17 J
Answer: D
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Simplify the expression by using a sum or difference identity.cos(13k) cos (6k) - sin(13k) sin (6k)
A. sin(19k) B. cos(7k) C. cos(19k) D. sin(7k)
Give the genus of the object. If the object has a genus larger than 5, write "larger than 5."Swiss cheese
A. genus 3 B. genus 0 C. larger than 5 D. genus 1
As summer approaches the size of Matt's wardrobe increases weekly by 6%. Assume that Matt's wardrobe contained 112 pieces in March, and let GN denote the number of pieces in his wardrobe N months after March.Give an explicit formula for GN.
A. GN = N ? (1.06)112 B. GN = N ? (112)1.6 C. GN = 112 ? (1.6)N D. GN = 112 ? (N)1.06 E. GN = 112 ? (1.06)N
Solve the equation.log (x + 4) = log (4x - 5)
A. 
B. 
C. 
D. 