Answer:
Your mobile charger is an example of (d.) a generator.
Explanation:
Your mobile charger generates energy to charge your device.
Answer:
Explanation:
In this case we have to use the Principle of conservation of Momentum:
<em>This principle says that in a system the total momentum is constant if no external forces act in the system. The formula is:</em>
<em>Where:</em>
Mass of the first object.
Mass of the second object.
Initial velocity of the first object.
Initial velocity of the second object.
Final velocity of the first object.
Final velocity of the second object.
In <u>this problem</u> we have:
Observation: 
Is because the system has the same initial velocity.
First we have to find 
,
We can rewrite it as:
Replacing with the data:
We found the final velocity of the cart, but the problem asks for the resulting change in the cart speed, this means:
Then, the resulting change in the cart speed is:
Answer:
Yes, they do have the same internal energy.
Explanation:
The thermal balance refers to when there is no heat transfer between the bodies and their surroundings i.e. the bodies and the environment are at the same temperature.
Suppose two bodies of different masses and different materials, each one of them is at a temperature of 25(° C), which is the same temperature as the temperature of the environment, if these two bodies are close to each other, there is also heat transfer as they are at the same temperature, in the absence of any type of energy that enter or exit in these bodies, the amount of internal energy will be equal in both bodies.
Note: when the internal energy of one of these bodies is increased, heat transfer will happen, always looking for the thermal balance.
Answer:
Hurricane watch means hurricane conditions are expected in a specified area. As defined by National Oceanic and Atmospheric Administration (NOAA), it means that hurricane conditions (sustained winds of 74 mph or greater) are possible within your area. WHILE,
Hurricane warnings means hurricane conditions are expected in an area.
So while hurricane watch may not occur, hurricane warnings will most likely occur. Watch is usually issued hours before the warning is.
