The gas used to fill party ballons contain only helium atoms. This make helium a (n).

Use the small-angle formula to calculate the angular diameter of Earth as seen from the Moon. (Note: The linear diameter of Earth is; the average distance between the Moon and Earth is; the small-angle formula is.)

Speed is the rate at which a given distance is covered with time. true or false

A car travels 20 km west and then 20 km south. what is the magnitude of its displacement vector

Dave's sister gets very stressed out during final exam time; however, Dave isn't affected by the stress. What does this illustrate? A. Fight or flight response B. Personal stress C. Relaxation response D. Subjective stress

The job outlook for physical therapists

2. How is temperature related to kinetic energy?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?