C. The flow of energy from one point to another.
Answer: B. A model of a cell is easier to manipulate
Explanation: just took the test//APEX
Answer:
1.43 kg
Explanation:
We can solve the problem by using Newton's second law:

where
F is the net force on an object
m is its mass
a is its acceleration
For the squirrel in the problem, we have:
is the acceleration
F = 5 N is the net force acting on it
Solving for m, we find its mass:

Answer:
R = 668.19 ft
Explanation:
given,
speed of the ball thrown by the pitcher = 100 mph
to travel maximum distance θ = 45°
distance traveled by the ball = ?
using formula
1 mph = 0.44704 m/s
100 mph = 44.704 m/s


R = 203.71 m
1 m = 3.28 ft
R = 203.71 × 3.28
R = 668.19 ft
hence, ball will go at a distance of 668.19 ft when pitcher throw it at 100 mph.