A pendulum of length 130 cm has a period of T1. The Bob is pulled and released to move in horizontal circle of radius 50cm. If the period of rotation is T2, calculate the ratio T1:T2

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

Where should a carbon monoxide detector be mounted?