A31.3cm diameter cylinder of nitrogen gas is 70cm long and at 534.48°c. the pressure gauge (as shown) reads 69.9 psi a) how many nitrogen atoms are in the cylinder? b) what is the mass of the nitrogen? c) what is the nitrogen molecule (n2) number density per unit volume? d) what is the gas's mass density?

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

Diamond will scratch quartz. true or false

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader