An object with a mass of 1 kg is attached to one end of a cord 10 m long. the cord will break if its tension exceeds 10 n. the object is swung in a
horizontal circle on a frictionless surface. the other end of the cord remains fixed. find the maximum speed the object can attain without breaking
the cord.
10 m/s
20 m/s
25 m/s
15 m/s

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.

Explain how waste energy is produced when an inefficient lightbulb converts electrical energy into radiant energy.