A cannon shoots a cannonball with speed 42m/s at angle 30° to the horizontal from a 50 meter height castle. What is maximum horizontal distance the ball travels, in meters? Neglect air resistance, g= 9.8m/s2

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

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.

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?