three steel spheres have masses of 12.62g,13.0g and 12.88g. find the average masss of the steel spheres
To find the average mass of the steel spheres, you need to sum up the masses of all three spheres and then divide the result by 3 (since there are three spheres).
12.62g + 13.0g + 12.88g = 38.50g
Average mass = 38.50g / 3 = 12.83g
Therefore, the average mass of the steel spheres is 12.83g.
a acr travels 250.0 metres in 1.00 minute. calculate its average speed in m/s and in km/h
To calculate the average speed in m/s, you need to divide the distance traveled by the time taken:
Average Speed = Distance / Time
Average Speed = 250.0 m / 60 s = 4.17 m/s
So, the average speed of the car is 4.17 m/s.
To convert m/s to km/h, you can multiply the value by 3.6 (since there are 3.6 km in 1 hour):
Average Speed = 4.17 m/s * 3.6 km/h
Average Speed = 15.012 km/h
Therefore, the average speed of the car is approximately 15.01 km/h.
how many significant digits are in 1.38
There are three significant digits in the number 1.38.
round off the following to two significant digits:
4.683=
0.34499=
34611=
4.683 rounded off to two significant digits is 4.7.
0.34499 rounded off to two significant digits is 0.34.
34611 rounded off to two significant digits is 3.5 × 10^4.
express in mm:
24cm
16m
308km
24 cm = 240 mm (1 cm = 10 mm)
16 m = 16,000 mm (1 m = 1,000 mm)
308 km = 308,000,000 mm (1 km = 1,000,000 mm)
express in m
956cm
2045mm
0.00689cm
0.000025km