Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 10

**pre-cal**

solve for all values in [0,2pie) 2cos^2x-5sinx+1=0

**pre-cal**

solve for all values in [0,2pie) 2sin^2x-1=0

**pre-cal**

consider y=-2+5cos(20x-5pie) the period is? the frequency is? the vertical shift is? the horizontal shift is?

**physics**

A flowerpot falls from a window sill 28.4 m above the sidewalk. What is the velocity of the flowerpot when it strikes the ground? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s

**physics**

An apple falls from a tree and hits the ground 9.93 m below. With what speed will it hit the ground? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

**physics**

Consider a position-time graph. The position is to be graphed 1. along the horizontal axis. 2. along either axis you choose. 3. along the vertical axis.

**physics**

A runner is jogging at a steady 2.3 km/hr. When the runner is 8.4 km from the finish line, a bird begins flying from the runner to the finish line at 9.2 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies back to the runner....

**physics**

Two ants race across a table 63 cm long. One travels at 5.14 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm

**physics**

As it passes over Grand Bahama Island, the eye of a hurricane is moving in a direction 62 north of west with a speed of 98 km/h. Three hours later, it shifts due north, and its speed slows to 30 km/h. How far from Grand Bahama is the eye 4.50 h after it passes over the is...

**physics**

Bob heads out into a lake at an angle of 34 with respect to the shore. If his boat is capable of a speed of 2.5 m/s, how far from land will he be in 7 min and 31 s ? Answer in units of m

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