Each strip in the tape chart of the chart above is for a time interval of 1 tentick.

1. if the timer makes 50 dots per second, what time
intervals are represented by OA and AB?

2. What is the acceleration between 0 and A in
(i) cm/tentick?
(ii) cm/s per tentick,
(iii) cm/s2?

3.What is the acceleration between A and B?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

How can you increase the strength of an electromagnet?

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.