A14-kg dog jumps up in the air to catch a ball. the dog's center of mass is normally 0.20 m above the ground, and he is 0.50 m long. the lowest he can get his center of mass is 0.10 m above the ground, and the highest he can get it before he can no longer push against the ground is 0.60 m .if the maximum force the dog can exert on the ground in pushing off is 2.1 times the gravitational force earth exerts on him, how high can he jump?

1.29 m

Explanation:

Net force acting on the dog, will be given by

where m is mass and g is acceleration due to gravity

Since the work done by the net force against the ground equals the final potential energy

Height which the dog can jump,

H=0.6+0.44=1.04 m

Total height to reach=Height to jump+ half height of the dog

=1.04 m+0.5(0.5 m)=1.29 m

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015