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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
956 cm = 9.56 m (1 m = 100 cm)
2045 mm = 2.045 m (1 m = 1000 mm)
0.00689 cm = 0.0000689 m (1 m = 100 cm)
0.000025 km = 0.025 m (1 km = 1000 m)
express in km:
2357m
23.57Mm
89.6cm
45mm
2357 m = 2.357 km (1 km = 1000 m)
23.57 Mm = 23,570 km (1 Mm = 1,000,000 m)
89.6 cm = 0.00896 km (1 km = 100,000 cm)
45 mm = 0.045 km (1 km = 1,000,000 mm)
(9.23g)/(8.7cm^3)=
To calculate (9.23g)/(8.7cm^3), you need to divide the mass (9.23g) by the volume (8.7cm^3).
(9.23g)/(8.7cm^3) = 1.061 g/cm^3
Therefore, the value of (9.23g)/(8.7cm^3) is approximately 1.061 g/cm^3.
6.9µm in mm
To convert from micrometers (µm) to millimeters (mm), you divide the value by 1000 since there are 1000 micrometers in 1 millimeter.
Therefore, 6.9µm is equal to 6.9/1000 = 0.0069 mm.
8.56kg + 0.2436kg=
To add 8.56 kg and 0.2436 kg, simply align the decimal points and add the numbers:
8.56 kg
+ 0.2436 kg
--------------
8.8036 kg
Therefore, 8.56 kg + 0.2436 kg equals 8.8036 kg.
(8.2x10^4)/(2.6x10^-8)=
To divide two numbers in scientific notation, you can divide the coefficients and subtract the exponents.
(8.2 x 10^4) / (2.6 x 10^-8)
Dividing the coefficients: 8.2 / 2.6 = 3.15384615385
Subtracting the exponents: 10^4 / 10^-8 = 10^(4+8) = 10^12
Therefore, (8.2 x 10^4) / (2.6 x 10^-8) = 3.15384615385 x 10^12
3.6 x10^5 x 4.4x10^8=
To multiply two numbers in scientific notation, you can multiply the coefficients and add the exponents.
(3.6 x 10^5) x (4.4 x 10^8)
Multiplying the coefficients: 3.6 x 4.4 = 15.84
Adding the exponents: 10^(5+8) = 10^13
Therefore, (3.6 x 10^5) x (4.4 x 10^8) = 15.84 x 10^13
in significant digits
65000=
0.00836=
65000 has two significant digits.
0.00836 has three significant digits.