Answer:
The heat capacity of the sample of metal is 664j/kg.°C
Explanation:
Kindly find attached a detailed solution to this question for you reference.
Given data
Mass of sample m1= 0.45kg
Temperature of sample θs= 80°c
Mass of water mw = 0.7kg
Temperature of water θw= 15°C
Specific heat capacity of water Cw=
4200j/kg.°C
Equilibrium Temperature θ3= 21°C
HEAT LOSS BY SUBSTANCE =HEAT GAINED BY WATER
What is Quantity of heat?
Quantity of heat is the amount of heat absorbed or given out by a body Q=mcθ
What is the heat capacity?
Heat capacity is the amount of heat required to raise the temperature of a substance by 1k.The S.I unit is joule per Kelvin J/k
What is specific heat capacity?
The specific heat capacity is the amount of heat required to raise the temperature of 1kg of substance by 1k
Missing details: figure of the problem is attached.
We can solve the exercise by using Poiseuille's law. It says that, for a fluid in laminar flow inside a closed pipe,
where:
is the pressure difference between the two ends
is viscosity of the fluid
L is the length of the pipe
is the volumetric flow rate, with being the section of the tube and the velocity of the fluid
r is the radius of the pipe.
We can apply this law to the needle, and then calculating the pressure difference between point P and the end of the needle. For our problem, we have:
is the dynamic water viscosity at
L=4.0 cm=0.04 m
and r=1 mm=0.001 m
Using these data in the formula, we get:
However, this is the pressure difference between point P and the end of the needle. But the end of the needle is at atmosphere pressure, and therefore the gauge pressure (which has zero-reference against atmosphere pressure) at point P is exactly 3200 Pa.
Answer:
Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it's running. So a 60W bulb is burning 60 Joules of energy every second you have it turned on.
Answer:
dude just use the calculator fr