Answer: A hot air balloon rising and falling in the atmosphere, a radiator that emits warm air and draws in cool air, and rice moving in a pot of water that is being heated. :)
Answer:
1519.5 joules
Explanation:
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 525 cal of work done on it
first, convert cal to joules
1 cal =4.18 joules
so 525 cal = 525 X 4.18 = 2194.5 joules
the system spent 675 joules heating the surroundings and was given
2194.5 joules by work done on it
so the net gain in energy is
2194.5 -675 = 1519.5 joules
The nervous system has three general functions: a sensory function, an interpretative function and a motor function.
1. Sensory nerves gather information from inside the body and the outside environment. The nerves then carry the information to the central nervous system (CNS).
2. Sensory information brought to the CNS is processed and interpreted.
3. Motor nerve cells convey information from the CNS to the muscles and glands of the body.
The nervous system is responsible for coordinating all of the body's activities.
Answer:
173.75 km/hr in the NW direction.
Explanation:
Velocity is the time rate of change in displacement of a body. Mathematically:
v = d / t
where d = displacement
t = time
Therefore, the velocity of the car is:
v = 556 / 3.2 = 173.75 km/hr
The velocity of the car is 173.75 km/hr in the NW direction.
Answer:u=-22 m/s
Explanation:
Given
mass of puck 
Average force 
time of contact 
puck leaves with a velocity of 
We know impulse is 
therefore
Final momentum 
Impulse on the ball 
Impulse
Initial velocity is given by
i.e. initially ball is moving towards -x-axis
