A wheel starts from rest and rotates with a constant angular acceleration about a fixed axis. It completes the first revolution 6.0 s after it started. How long after it started will the wheel complete the second revolution?
a. 9.9 s
b. 7.8 s
c. 8.5 s
d. 9.2 s
e. 6.4 s
c
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A family goes on vacation for one week but forgets to turn off an electric fan that consumes electricity at the rate of 200 W. If the cost of electricity is 12.0ยข/kW?h how much does it cost (to the nearest penny) to run the fan for the week?
What will be an ideal response?
The three major types of seawater movement are ______________, currents, and tides
Fill in the blank(s) with correct word
Let the orbital radius of a planet be R and let the orbital period of the planet be T. What quantity is constant for all planets orbiting the sun, assuming circular orbits?
A) T3/R2 B) T/R2 C) T2/R D) T/R E) T2/R3
A convex mirror with focal length of -20 cm forms an image 15 cm behind the surface. Where is the object located as measured from the surface?
a. 30 cm c. 15 cm b. 7.5 cm d. 60 cm