A 1500 kg weather rocket accelerates upward at 10m/s2. It explodes 1.8 s after liftoff and breaks into two fragments, one twice as massive as the other. Photos reveal that the lighter fragment traveled straight up and reached a maximum height of 510 m .

What was the speed of the heavier fragment just after the explosion?
Express your answer using two significant figures.

What was the direction of the heavier fragment just after the explosion?
1. upward OR
2. downward

Apossible explanation for a set of facts that can be tested by further investigation is called

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Which is not true about oxygen-17 and oxygen-18?