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Scientists, including one of Indian origin, have developed an ultra-thin device that can power your smartphone, fitness tracker and other gadgets using human movements such as walking and waving. Based on battery technology, and made from layers of black phosphorus that are only a few atoms thick, the energy harvesting system generates small amounts of electricity when it is bent or pressed even at the extremely low frequencies characteristic of human motion.
‘A’, ‘B’ and ‘C’ entered into a partnership by making investments in the ratio 5:3:9, respectively. At end of the year, if the difference be...
A, B and C started a online education website by investing Rs.28,000, Rs.36,000 and Rs.40,000 respectively. Find the share of A’s, out of an annual pr...
Determine the time difference for two buses, one with a length of 200 meters and the other with a length of 150 meters, as they travel at speeds of 54 k...
Neil and Nitin start a business by investing ₹12,000 and ₹ y , respectively. Mukesh joins the venture after 9 months by investing ₹(12,000 + y). A...
If the ratio of time periods of investment of A and B is 4:5, profit at the end of the year is Rs.120000 and A’s share in it is Rs.30000, then what is...
The spending habits of A, B, and C follow a ratio of 3:2:4, while their savings follow a ratio of 3:1:2. The combined expenditure of all three individua...
'A' and 'B' started a business by investing Rs. '6x' and Rs. '8x' respectively. Five months later, 'A' withdrew Rs. 100 from his investment whereas 'B' ...
A, B and C enter into a partnership with a capital in which A’s contribution is Rs. 16,000. If out of a total profit of Rs. 900, A gets Rs. 500 an...
‘A’, ‘B’ and ‘C’ started a business by investing Rs. 5,000, Rs. 6,000 and Rs. 4,000, respectively. After 6 months, ‘B’ decreased his inv...