Answer:
Force on the spring will be equal to 10 N
Explanation:
We have given mass of the block m = 0.2 kg
Compression of the spring x = 0.01 m
Spring constant
It is not given what we have to find but i think we have to find force here
We know that force on the spring is given by
So the force on the spring will be 10 N
Answer:
The specific heat capacity of molybdenum is
0.2696 joule/gram
Explanation:
Step one
Given that
Mass of molybdenum Mm =237g
Temperature of molybdenum
T1=100°c
Mass of water MW =244g
Temperature of water T2= 10°c
Final temperature T3 =15.3°c
Step two :
We know that the specific heat capacity of water Cw 4.186 joule/gram
But Specific heat capacity of molybdenum Cm?
We know that the quantity of heat transfered can be expressed as
Q=Mm*Cm(T1-T3)+MW*Cw(T2-T3)
since the system attained thermal equilibrium then the expression
Is
=Mm*Cm(T1-T3)=MW*Cw(T3-T2)
Substituting our values into the equation we have
237*Cm(100-15.3)=244*4.186(15.310)
20073.9Cm=5413.3352
Cm=0.2696 joule/gram
Specific heat capacity of molybdenum is 0.2696 joule/gram
Answer:
C. Both device would require the same amount of force.
Answer:
388.5J
Explanation:
Given parameters:
Weight = 70N
Height = 5.55m
Unknown:
Gravitational potential energy at the top of the ladder = ?
Solution:
The gravitational potential energy is the energy due to the position of the body.
Gravitational potential energy = Weight x height
So;
Gravitational potential energy = 70 x 5.55 = 388.5J
Answer:
39.6138 °C
Explanation:
Heat gain by water = Heat lost by nickel
Thus,
Where, negative sign signifies heat loss
Or,
For water:
Volume = 100.0 mL
Density of water= 1 g/mL
So, mass of the water:
Mass of water = 100 g
Initial temperature = 22.0 °C
Specific heat of water = 4.186 J/g°C
For nickel:
Mass = 275 g
Initial temperature = 100 °C
Specific heat of nickel = 0.444 J/gK = 0.444 J/g°C
So,
Thus,
The final temperature of the combined metals is 39.6138 °C