Một vật có trọng lượng 6N đặt lên sàn nằm ngang. Nếu vật được kéo chuyển động thẳng đều trên mặt nằm ngang với lực kéo 3N. Hãy biểu diễn
các lực tác dụng lên vật ? tỉ xích 1cm ứng với 3N

Will you chech and finish these for me, because i am stumped with them.

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.