a person is sitting on the last bench can see clearly see things written on book but cannot see them distinctly on board. what t
1 answer:
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Answer:
Mass, m = 20000 kg
Explanation:
The force acting on the shark,
Acceleration of the shark, a = 1.25 m/s²
We need to find the mass of the Shark. The force acting on an object is given by :
F = ma
m is the shark's mass
So,
So, the mass of the Shark is 20000 kg.
Answer:
ΔV=0.00043 L
Explanation:
Given that
V= 0.3 L
T= 14 °C
T'=27°C
Coefficient of volume expansion
ΔV=0.00043 L
Answer:
The unbalanced force that caused the ball to stop was friction
Explanation:
As Newton's second law states, the acceleration of an object is proportional to the net force applied on the object:
therefore, in order to move at constant speed, an object should have a net force of zero (balanced forces) acting on it.
In this case, the ball slows down and eventually comes to a stop: it means that the ball is decelerating, so there are unbalanced forces (net force different from zero) acting on it. The unbalanced force acting on the ball is the friction: friction is a force against the motion of the object, which is due to the contact between the surface of the ball and the surface of the street, and this force is responsible for slowing down the ball.