Explanation:
It is given that,
Mass of copper, m = 207 g
Specific heat of copper,
Heat absorbed,
Initial temperature,
Let is the final temperature of copper. Heat absorbed is given by :
So, the final temperature of the copper is 143.13 degree Celsius. Hence, this is the required solution.
P and V are inversely proportional when temperature is constanst.
answer is the last option.
Your answer is going to be 2m south
Answer:
25 m/s
Explanation:
Centripetal acceleration is the square of the tangential velocity divided by the radius.
a = v² / r
15.625 m/s² = v² / (40 m)
v² = 625 m²/s²
v = 25 m/s
The speed of the car is 25 m/s.
Answer:
Explanation:
given,
diameter of string A = 0.5 mm
tension in string A = 440 N
diameter of string B = 1 mm
tension in string B = 820 N
wave speed =
M is the linear density that is mass per unit length =mass / length
mass = density x volume
from the above equation
now,
ratio of the wave speed Va/Vb is 1.47