Since the elevator is moving with a constant speed and not accelerating, the tension in the string is simply the normal, routine, everyday boring weight of the object. Since the elevator is moving with a constant speed and not accelerating, the tension in the string is simply the normal, routine, everyday boring weight of the object.
Answer:
black pot
Explanation:
option a is correct
Cold water will warm to room temperature faster in a Black pot as we know that Black surfaces and good absorbers of heat in comparison to other surfaces. Moreover, Silver a good reflector of heat. It reflects most of heat incident on it, the cold water will take longer time to come the room temperature in Silver pot.
Answer:
The cup absorbs 18757.2J of heat.
Explanation:
The formula that relates the absorbed or emitted heat with the change in temperature is the following:
Where Q is the heat (or thermal energy), m is the mass of the object, c is its specific heat and ΔT is the change in temperature of the object.
Since the mass of the cup is given in grams, we have to convert it to kilograms:
Now, we can plug all the given values in the formula to obtain the absorbed heat:
It means that the cup absorbed 18757.2J of heat.
