Answer:
The speed is 
Explanation:
Electric field magnitude (E) and electric force magnitude (F) are related by the equation
with q the charge of the proton (
). Because between parallel plates electric field is almost constant, electric force is constant too:
because electric force is constant, then by Newton's second law acceleration (a) is constant too, it is:
with m the mass of the proton (
):
Now with this constant acceleration we can use the kinematic equation
with v the final speed, 
the initial velocity that is zero (because proton starts at rest) and d is the distance between the plates, so:
Answer:
I think is more easy to push an empty car because theres anything that makes the car hard to move and when it is totally full is harder because of the weight of the food or drinks and it makes the car more harder to move
Explanation:
i hope you understand me and this helps, sorry if it doesn't TT
Answer:
So then the answer for this case would be 29906 cal but we need to convert this into KJ and we know that 1 cal = 4.184 J and if we convert we got:
Explanation:
For this case we know the mass of the water given :
And we know that the initial temperature for this water is 
.
We want to cool this water to the human body temperature 
Since the temperatures given are not near to 0C (fusion point) or 100C (the boling point) we don't need to use latent heat, then the only heat involved for this case is the sensible heat given by:
Where 
represent the specific heat for the water and this value from tables we know that 
for the water.
So then we have everything in order to replace into the formula of sensible heat and we got:
So then the answer for this case would be 29906 cal but we need to convert this into KJ and we know that 1 cal = 4.184 J and if we convert we got:
Inelastic.
If it was elastic, they'd bump right off each other. But since they've been locked, or stuck together, this is inelastic.
