<u><em>The specific heat capacity of wood is 1.76 </em></u>
Answer:
Work done, W = 401 kJ
Explanation:
It is given that,
Mass of the car, m = 1100 kg
Initial, velocity of the car, u = 27 m/s
Finally it stops, v = 0
According to work energy theorem, the change in kinetic energy is equal to the work done i.e.
W = -400950 J
or
-ve sign shows the direction of force and displacement are in opposite direction.
So, 401 kJ work is required to stop a car. Hence, this is the required solution.
The atomic number is equal to the number of protons. In short, your answer would be 64.
Don’t confuse this with atomic mass which is protons + neutrons.
Answer:
835/(320*9.8)=0.266
Explanation:
since the safe is moving at a constant speed then the net force is zero
in other words the friction force equals the sum of Bonnie and Clyde force
so the friction force must be 485+350=835N
the frictional force = mu*m*g
Voltage = (current) x (resistance)
Voltage = (0.3 A) x (25 ohms)
Voltage = (0.3 x 25) (A-Ω)
<em>Voltage = 7.5 volts</em>