Solve.In a dc circuit the power P dissipated in the circuit is given by the equation P = R?I2 where R is the circuit resistance in ohms and I is the current in amperes. What current will produce 2420 watts of power in a 20-ohm resistor?
A. 40 amps
B. 32 amps
C. 15 amps
D. 11 amps
Answer: D
Mathematics
You might also like to view...
Divide.-56 ÷ (-7)
A. -9 B. 8 C. 9 D. -8
Mathematics
Solve the problem.A ramp L ft long has an incline of ?. The work W needed to move an object weighing P lb up the ramp is given by W = PL(sin ?). To the nearest unit, find the work needed to move a trunk when: 
A. 792 ft-lb B. 959 ft-lb C. 871 ft-lb D. 3840 ft-lb
Mathematics
Answer the question.If k < 0, what is the solution set of 
< k?
A. (- 
, 
)
B. ?
C. (-?, ?)
D. {0}
Mathematics
Find the range of the quadratic function in interval notation.f(x) = (x + 3)2 + 5
A. [-3, ?) B. [-5, ?) C. [5, ?) D. [3, ?)
Mathematics