Answer:
Q = 675 [J]
Explanation:
We can calculate the amount of heat transfer by means of the following expression that includes the mass and temperature change in a body as a function of the specific heat.

where:
m = mass = 25 [gr]
Cp = specific heat = 0.9 [J/g*°C]
Tinitial = 55 [°C]
Tfinal = 25 [°C]
![Q=25*0.9*(55-25)\\Q=675 [J]](https://tex.z-dn.net/?f=Q%3D25%2A0.9%2A%2855-25%29%5C%5CQ%3D675%20%5BJ%5D)
Answer:
The value is 
Explanation:
From the question we are told that
The height is h = 2.0 m
The height of the window is 
The initial velocity of the rock is 
The angle at which it is thrown is 
Generally the vertical component of the velocity of the stone is mathematically represented as

=>
Generally the height of the window from the ground is mathematically represented as using kinematic equation as

=> 
Here g is negative -9.8 m/s^2 because the direction of the stone is against gravity
So

Solving this quadratic equation using quadratic formula we obtain
t = 0.770 s
Generally the velocity of the stone on the x axis is mathematically represented as

=> 
Generally the distance between the person throwing the rock and the window is mathematically represented as

=> 
=> 
Answer here
The displacement of the cars is somewhere near 0 miles since they virtually finish where they started. Yet the successful cars have covered a distance of 500 miles