WorksheetsPhysics 0100 Q1
Total questions: 20
Worksheet time: 40mins
Which expression has the same SI base units as pressure?
The speed v of a liquid leaving a tube depends on the change in pressure ΔP and the density ρ of the liquid. The speed is given by the equation above, where k is a constant that has no units. What is the value of n?
1/2
1
3/2
2
Suppose frequency, f, momentum, p, and velocity, v, were chosen as fundamental physical quantities having dimensions [f], [p] and [v], respectively. Deduce what would be the dimensions of the quantity mass.
[f]/[v]
[p]/[f]
[p]/[v]
[p][v]
Which unit can be expressed in base units as kgm2s-2?
joule
newton
pascal
watt
The luminosity L of a star is given by L = 4πr2σT4 where r is the radius of the star, T is the temperature of the star and sigma is a constant with units W m^2 K^-4. What are the SI base units of L?
kg m^2 s^-1
kg m^2 s^-2
kg m^2 s^-3
kg m^2 s^-4
A top drug company has just invented a new colon drug. They can produce 1ml for $7.35. How much would it cost to produce 2 kiloliters of this colon drug?
$1,000,000
$2,500,000
$14,700
$14,700,000
A 2.0 m long solid copper cylinder has a cross-sectional area of 3.0 x102 mm2 . What is its volume in cm3?
6000000
6
60
600
You would like to re-carpet your living room, which is 755 ft2. The carpet you would like to buy is $8.75 per square meter. How much will it cost to purchase the carpeting? (1 ft = 12 in; 1 in = 2.54 cm)
$886.54
$613.74
$19,000.13
$65.83
How many meters do you travel in 37 minutes if your speed is 75.0 mi/h. (1 mile = 1.609 km)
0.74
7.44
74000
74416.25
Find the mass in pounds of 1.00 m3 of corn syrup (density of 1.38 g/cm3). (1 kg = 2.20462 lb)
3042
3.04 x 103
3.042 x 106
1.8 x 103
How many cubic centimeters are there in 2.11 yd3? (1 yard = 36 inches; 1 inch = 2.54 cm)
1.6 x 106
1,613,211
1.613 x 103
1.61 x 106
The mean diameter of a piece of wire is 0.6 ± 0.02 mm. Calculate the percentage uncertainty in the diameter.
33%
3%
0.03%
333%
The true temperature of the room is 22.4°C. One thermometer gives a reading of 22°C and another gives a reading of 23.4°C . Which is most accurate and estimate its uncertainty?
22°C, ± 1°C
22°C, ± 0.5°C
22.4°C, ± 0.05°C
22.4°C, ± 0.1°C
Isabelle is finding the mass of an insect, but the insect moves while on the electronic balance. She records a set of readings as 5.00 mg , 5.01 mg, 4.98 mg, 5.02 mg. The true value of the insect’s mass is 4.5 mg. Calculate an average value with estimated uncertainty for her results and compare this value with the true value using the terms above.
5.00 ± 0.02 the value is not precise but is accurate
5 ± 0.01, the value is not precise and not accurate
5.00 ± 0.02, the value is precise and accurate
5.00 ± 0.01, the value is precise, but not accurate
If the values recorded are precise but not accurate (they are always too high), this can indicate what type of error?
there is no error
fluctuating conditions
random error
zero error
Calculate the gradient of the line.
1/2
2
1.5
4
This graph illustrates what type of error?
no error is seen
random error
zero error
systematic error
Find the zero error in the caliper.
0.04 cm
0.4 cm
- 0.4 cm
- 0.04 cm
How do you reduce the above error?
adding the error to your recorded value
multiplying the error to your recorded value
subtracting the error to your recorded value
diving the error to your recorded value
What type of error is represented here.
no error is represented
random error
zero error
systematic error
