एक असंपीड़ित द्रव के स्थिर, समान घूर्णी प्रवाह (steady, uniform rotational flow) में, त्वरण का कौन सा घटक हमेशा शून्य होता है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?