Physics Measurements Level: High School
Pressure on a square plate is measured by measuring the force on the plate and dividing it by the area of the plate calculated by measuring the sides of the plate if the maximum error in the measurement of force and length are respectively 3% and 1% the maximum error in the measurement of pressure is ?a) 2%
b) 3%
c) 4%
d) 5%
Physics Measurements Level: High School
The sides of a rectangle are 6.01 cm and 12 cm . Taking the significant figures into account the area of the rectangle is ?a) 72.00 cm^2
b) 72.1 cm^2
c) 72 cm^2
d) 72.12 cm^2
Physics Measurements Level: High School
The significant figures in 0.080 kg isa) 1
b) 2
c) 3
d) 4
Physics Measurements Level: High School
Which of the following has three significant figures ?a) 1.00081 kg
b) 0.0500 mm
c) 305.0 cm
d) 8.0600 m
Physics Measurements Level: High School
Approximately 118 mi wide and 307 mi long and averaging 279 ft in depth , Lake Michigan is the second largest Great lake by volume . Estimate its volume of water in m3 . (Note that 2.54 cm = 1 inch and 5280 feet = 1 mile )
Physics Measurements Level: High School
Find the density of a 5-kg solid cylinder that is 10 cm tall and has a radius of 3 cm .
Physics Measurements Level: High School
A planet Vanguardeous Lioness is a sphere of radius 7.30 x 10^6 m . What area) its circumference in meters
b) its surface are in square meters
c) its volume in cubic meters ?
Physics Measurements Level: High School
A boy scout off a distance of 110 steps . If each step is 75 cm , which is the distance in meters ?a) 8250 m
b) 825 m
c) 82.5 m
d) 8.25 m
e) 185 m
Physics Measurements Level: High School
Global positioning satellites (GPS) can be used to determine positions w/great accuracy . The system works by determining the distance between the observer and each of several satellites orbiting earth . If one of the satellite is at a distance of 20000 km from you . What percent accuracy in the distance is required if we desire a 2 meter uncertainty ? How many significant figures do we need to have in the distance ?
Physics Measurements Level: High School
What is the percentage error in the measurement of 23 +- 1 m^3 ?a) 43 %
b) 0.4 %
c) 4%
d) 23%
Physics Measurements Level: High School
The significant figure in 0.080 kg is :a) 3
b) 4
c) 2
d) 1
Physics Measurements Level: High School
Walking beside you , your friend takes 50 strides per minute while you take 48 strides per minute . If you start in step , when will you be in step again ?
Physics Measurements Level: High School
A SUV starts from rest and accelerates at 1.8 m/s2 for 120 s . It then moves at a constant speed for 2400 S . It then decelerates at 2.5 m/s2 until it stops .a) What is the velocity during the constant speed portion of his drive .
b) How long did it take the SUV to stop .
c) How far did the SUV travel during each portion of the drive and what is the total distance traveled ?
Physics Measurements Level: High School
(a)A student performed the ball drop experiment , measuring the acceleration of an object due to gravity five times . Her results for the trails were 9.7 , 9.8 , 10.0 , 9.9 and 9.8 all in units m/s^2 . What is the best estimate and uncertainly based on her measurement ?(b) The student is told that the accepted value of the acceleration due to gravity in San Diego is 9.81 m/s^2 . What is the discrepancy between her best estimate and the accepted value ? Do you think it is significant ?
Physics Measurements Level: High School
Given a sheet of paper and a ruler , can you think of two indirect measurements you could make ? What direct measurements would you need in each case ?(i) Perimeter 2 [l+b]
(ii) Area l x b
Direct measurements .(i) length l
(ii) width b