What was the main objective of the discovery missions? (topic: space exploration)

a.

to enhance our understanding of the solar system

b.

to discover extraterrestrial life outside the solar system

c.

to test new rockets developed by nasa

d.

to discover and capture an asteroid

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?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?