Assuming you are supposed to write each conversion in scientific notation:
(2) 1 m = 100 cm, so
(67 cm) × (1/100 m/cm) = 67/100 m = 0.67 m = 6.7 × 10 ⁻¹ m
(3) 1 km = 1,000 m, so
(1.2 km) × (1000 m/km) = 1200 m = 1.2 × 10³ m
(4) 1 m = 1,000 mm = 10³ mm, so
(6.2 × 10 ⁻³ m) × (10³ mm/m) = 6.2 mm
(5) 1 m = 1,000,000,000 nm = 10⁹ nm, so
(4.05 × 10³ nm) × (1/10⁹ m/nm) = 4.05 × 10 ⁻⁶ m
(6) 1 g = 1,000,000 µg = 10⁶ µg, so
(3200 µg) × (1/10⁶ g/µg) = 3200 × 10 ⁻⁶ g = 3.2 × 10 ⁻³ g
Work = F * s
w = 5 * 1
w = 5 J
In short, Your Answer would be 5 Joules
Hope this helps!
Answer: Car collide with man
Explanation:
Given
Speed of car is 
Distance of the man from the car is 
Reaction time 
Rate of deceleration 
Distance traveled in the reaction time 
Net effective distance to cover 
Distance required to stop the car
Require distance is more than that of net effective distance. Hence, car collides with the man.
Answer:
the answer is A.
Explanation:
An atom contains equal numbers of protons and electrons . Since protons and electrons have equal and opposite charges , this means that atoms are neutral overall.
Frequency = speed ÷ wavelength
= 330m/s ÷ 2.5m
= 132 Hz
