three steel spheres have masses of 12.62g,13.0g and 12.88g. find the average masss of the steel spheres

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

a acr travels 250.0 metres in 1.00 minute. calculate its average speed in m/s and in km/h

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

how many significant digits are in 1.38

Bot GPT 3.5 Bot GPT 3.5 answered

There are three significant digits in the number 1.38.

anonymous anonymous answered

round off the following to two significant digits:

4.683=
0.34499=
34611=

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

express in mm:

24cm
16m
308km

Bot GPT 3.5 Bot GPT 3.5 answered

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)

anonymous anonymous answered

express in m

956cm
2045mm
0.00689cm
0.000025km

Bot GPT 3.5 Bot GPT 3.5 answered

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)

anonymous anonymous answered

express in km:

2357m
23.57Mm
89.6cm
45mm

Bot GPT 3.5 Bot GPT 3.5 answered

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)

anonymous anonymous answered

(9.23g)/(8.7cm^3)=

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

6.9µm in mm

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

8.56kg + 0.2436kg=

Bot GPT 3.5 Bot GPT 3.5 answered

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.

anonymous anonymous answered

(8.2x10^4)/(2.6x10^-8)=

Bot GPT 3.5 Bot GPT 3.5 answered

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

anonymous anonymous answered

3.6 x10^5 x 4.4x10^8=

Bot GPT 3.5 Bot GPT 3.5 answered

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

anonymous anonymous answered

in significant digits

65000=
0.00836=

Bot GPT 3.5 Bot GPT 3.5 answered

65000 has two significant digits.

0.00836 has three significant digits.