Physics Measurements Level: Misc Level
By definition, I inch precisely equals 2.5400 centimeters. A length is measured to be 3.2 feet, and after conversion to centimeters this length is reported to be 97.54 centimeters.Explain what is wrong with this conclusion.
Physics Measurements Level: Misc Level
convert 100 mi/hr into m/sec:
Physics Measurements Level: High School
Paddy and Steve makes a new year’s resolution to drink 1 m^3 of their beverage of choice throughout the year .a) Calculate the number of pints that paddy will be drinking , and the number of pots that Steve will have throughout the year . (Quote your answer to four significant figures)
b) If the density of a particular drink is 1.15 x 10^3 kg/m^3 , what is the mass of one pint ? What is its weight ? (Ignore the mass / weight of the glass . )
c) Paddy is an astronaut and makes a trip to the moon during the year . What is the mass , and the weight of one pint of his drink on the moon ? (1 pot = 285 mL , 1 pint = 570 mL , IL = 1000 cm^2 , g = 9.8 ms^-2 , g moon = 1.67 ms^-2)
Physics Measurements Level: High School
If the measuring is recorded as 2+- 0.1 mm . the relative error is ?+- 15%
+-10%
+-5%
+-20%
Physics Measurements Level: High School
The volume of a cylindrical tank is calculated by measuring its radius as 3 m with a maximum error of +1.5% and the length as 5 m with a maximum error of +1% . The volume of the tank is ?45p + 2.5% m3
45p+ 0.5 m3
45p + 5% m3
45p + 4% m3
Physics Measurements Level: High School
The number of significant figures in 2.0060 x 10-15 m is -----5
2
1
4
Physics Measurements Level: High School
A potential energy , U is calculated using the formula U = mgh , if m = 12 kg , g = 9.8 m/s^2 and h = 6.50 m , the potential energy U with the correct significant figures is ?764 kgm/s^2
760 kgm/s^2
764.4 kgm/s^2+
800 kgm/s^2
Physics Measurements Level: High School
A particular bird’s eye can just distinguish objects that subtend (opposite to ) an angle no smaller than about 3.0 x 10^-4 radians .a) How many degrees is this ?
b) How small an object can the bird distinguish when flying at a height of 100.0 meters ?
Physics Measurements Level: High School
For what radius , if any ,does the area of a circle equal the circumference of the circle ? Explain .
Physics Measurements Level: High School
A poster advertising a student election candidate is too large according to the election rules. The candidate is told she must reduce the length and width of the poster by 20% . By what percentage will the area of the poster be reduced ?
Physics Measurements Level: High School
For each of the angle theta = 35 degree , 25 degree , 18 degree , make a table to compare values of Tan (theta) . and Sin (theta) . At which of these angles in degrees does the different between Sin (theta) and Tan (theta) , become approximately :(a) 10% of Sin (theta)
(b) 1% of Sin (theta)
Physics Measurements Level: High School
The number of 8.0500 has how many significant figures ?a) 1
b) 2
c) 3
d) 4
e) 5
Physics Measurements Level: High School
What is the surface area of a box with sides of length 1 by 2 by 3 meters ?
Physics Measurements Level: High School
Calculate the volume of the earth (radius 6.38 x e6 m) .
Physics Measurements Level: High School
There are 50 liters of water in a full cylinder tank 1 meter high . What is the volume of water (in liters) remaining when the height of the water in the tank is 10 centimeters ?