<span>The answers that are correct from the chart are as follows: 1. From 1975 to 2010, temperatures on earth were higher than normal. Rest option are incorrect. Because, From 1880 to 1940, temperatures on earth were lower and not higher than normal. The 10 warmest years in the time span all did not occur in 1945. The coolest year in the time span occurred 1910.</span>
Answer:
0.823 Nm
Explanation:
current, i = 100 A
radius, r = 10 cm
Angle between the normal and the magnetic field, θ = 30°
Magnetic field, B = 0.524 T
Torque is defined as the
Torque = 0.823 Nm
Thus, the torque is 0.823 Nm.
Answer:
0.89534 kgm²
Explanation:
= Final angular velocity = 12.9 rad/s
= Initial angular velocity = 5.5 rad/s
= Initial moment of inertia = 2.1 kgm²
= Final moment of inertia
As there is no external torque the angular momentum is conserved
The final moment of inertia is 0.89534 kgm²
Answer:
DU = 375 Joules
Explanation:
Given the following data;
Quantity of heat = 500 Joules
Work done = 125 Joules
To find the change in internal energy;
Mathematically, the change in internal energy of a system is given by the formula;
DU = Q - W
Where;
- DU is the change in internal energy.
- Q is the quantity of energy.
- W is the work done.
Substituting into the formula, we have;
DU = 500 - 125
<em>DU = 375 Joules</em>
Answer:
no
Explanation:
a constant speed = speed stays the same
accelerating = speed is increasing