An amusement park designer wants his swing to have a centripetal

acceleration of 19 m/s2. If the velocity of the swing is 17 m/s, how long

should the chain on the swing be?

O

A. 14.8 m

O

B. 14.0 m

15.2 m

13.6 m

In order for work to take place the energy present must be related to the movement of the object. the force applied must be a balanced force resulting in motion of the object.

Which elements does not exist as a diatomic molecule?

If a block has a mass of 5.4kg, what is needed to accelerate the mass at a rate of 2.9m/s?

AP BIoogy an electron cloud has a negative electrical charge. What type of charge would you expect the electron to have?

Is a tape dispenser a pulley or a wheel and axis?

The liquid contained in batteries that conducts electric charge is called the: solution, electrolyte, suspension, colloid

Someone jumped from a high altitude at 31,000m above the earth. he freefalled for 4 min and 36 secs with top speed of 988 mph

What does the law of reflection mean?

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.

4. Explain the doppler effect. Be sure to talk about how the wave changes, the perceived change hear by a person that an emitted sound is moving towards, and the perceived change hear by a person that an emitted sound is moving away from. 5.