Answer:
- 6.48 J K⁻¹
Explanation:
Temperature of gas = 20°C
= 273 +20 = 293 K.
As temperature is fixed , there will be no change in gas internal energy
Δ E = 0
From the relation
Δ Q = Δ E+ Δ W
Work done on the gas is 1.9 x 10³
Δ W = - 1.9 x 10³ J
Δ Q = - 1.9 x 10³ J
Δ S = Δ Q / T
=
= - 6.48 J K⁻¹
Explanation:
the answer is in the above image
Answer:
Explanation:
Given
Power consumption of bulb and water are and
If the Devices are on for four hours
Total power of devices
Energy consumed for 4 hours is
For 30 days it is
Cost for 30 days
Every piece of matter begins “Out of this world”
<h2>
Stopping force on the bullet is 1073.23 N to the left.</h2>
Explanation:
Mass of bullet, m = 11.0 g = 0.011 kg
Initial speed of bullet, u = 210 m/s
Final speed of bullet, v = 0 m/s
Displacement of bullet, s = 22.6 cm = 0.226 m
We have equation of motion v² = u² + 2as
Substituting
0² = 210² + 2 x a x 0.226
a = -97566.37 m/s²
We have
Force, F = Mass x Acceleration
F = 0.011 x -97566.37 = -1073.23 N
Negative means opposite to the direction of motion of bullet.
Stopping force on the bullet is 1073.23 N to the left.