Students collected data as shown: 1.0 m, 1.2 m, and 1.1 m. the students were measuring which of the following?
distance
area
time
mass
which is correct?
1.00 m = 100. dm
1.00 m = 100. cm
1.00 m = 100. mm
1.00 m = 100. dam
which is not correct?
1000 km = 1 m
1000 mg = 1 g
1000 ms = 1 s
10 cm = 1 dm
which of the following numbers has 4 significant digits?
.0008 m
10.00 mg
2070 people
5000 liters
how many significant digits in the following number: 20.10 m?
1
3
2
4
the mean or average distance of the earth to the sun is 1.50 x 1011 m. how many significant digits are presented?
2
3
14
11
the speed of light in a vacuum is 299,792,458 m/s. which gives this number in three significant digits?
3.00 x 103 m/s
299,000,000. m/s
2.99 x 10-8 m/s
3.00 x 108 m/s
the attractive force between any two masses is the gravitational constant 6.67 x 10-11 n kg2/m2. how would this look in standard notation?
66,700,000,000,000 n kg2/m2
667,000,000,000 n kg2/m2 n kg2/m2
.667 n kg2/m2
.667 n kg2/m2
in a lab in new york, thomas and nikola collected data over several trials. thomas recorded his measurements as 10.0 a, 11 a, and 8 a. nikola recorded his data as 9.0 a, 9.2 a, 8.8 a. is one more precise than the other?
thomas is more precise.
neither are precise.
both are precise.
nikola is more precise.
marie is puzzled by her findings. she has done several meticulous calculations and has gotten the numbers .37 rad, .89 rad, and 1.65 rad. she was expecting .90 rad each time. she has been which of the following?
both precise and accurate
precise
accurate
neither precise and accurate