Monday
May 20, 2013

# Posts by Charlie

Total # Posts: 339

physics
trying to win the superbowl, a placekicker attempts a field goal from 45 m away. when kicked, the ball leaves the ground with a speed of 22m/s at an angle of 50 degrees above the horizontal. what can you say about the ball when it reaches the crossbar that is 3.0m above the gr...

physics
sorry that was 188 that i got

math
How do i find the extrema (local maximum and minimum) by using the first derivative of: x^3-(3/2)x^2?

physics
while watching ocean waves at the dock of the bay. otis notices that 10 waves pass beneath him in 30 seconds. he also notices that the crests of succesive waves exactly coincide with the posts that are 5 meters apart. what are the period frequency wavelength and speed of the o...

physics
the lowest frequency we can hear is about 20hz. calculate the wavelength associated with this frequency for sound that travels at 340m/s. how long is this in feet.

physics
calculate the speed of waves in a puddle that are 0.15m apart and made by tapping the water surface twice each second

physics
a nurse counts 76 beats in one minute. what are the period and frequency of the hearts oscillations?

math
In gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations. What forumula are used? Don...

math
write the 100-complement of 40

chemistry
Lewis diagram for NO3- and NH4+

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