Answer:
Eletromagnetic radiation which is also known as visible light.
Explanation:
Let the vector position of the object in the (x-y) plane be

The applied force is

By definition, the applied torque is

Answer:
That's a weird graph, but judging from the units the acceleration is the slope of the graph.
a = (0.8 - 0.3)/(0.16 - 0.055) = 4.76 m/s²
Answer: 
Explanation:
Given
Radioactive material is found to decrease 40% of its original value in 
Sample at any time is given by

where, 
Put values

Taking natural logarithm both side
