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PHYSICS SEMESTER 1 REVIEW
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To be dimensionally consistent, the formula
VELOCITY = FREQUENCY X WAVELENGTH
must be related as follows (where velocity is in m/s; frequency is in 1/s; and wavelength is in m):
velocity = frequency^2 x wavelength
velocity = frequency x wavelength
velocity = frequency ÷ wavelength^2
velocity = frequency ÷ wavelength
The density of an alloy is 5000 kg/m^3. What is the density in g/m^3?
If a triple beam balance has one bar indicating every 100 grams, a second bar indicating every 10 grams, and a third bar showing every single gram with 10 marks between each number, what is the precision of this triple beam balance?
Cannot be determined from information given
Calculate the total mass of the following objects, each measured on a different instrument:
3570.0 g + 2.54 g + 0.07225 g
The mathematical formula for average speed is: S = d/t
Where S = speed in m/s d = distance travelled in meters and t = time elapsed in seconds
Which of the following correctly rearranges this formula to solve for d when S and t are known?
d = d/S
d = St
d = t/S
d = S/t
Find the equation x = at + b that fits the following data:
t(sec) 0 2 4 6 8 10
x (m) 20 90 160 230 300 370
x = 35t + 20
x = 25t + 45
x = 45t + 20
x = 35t + 15
Solve the following equation for x:
3x - 2 = 8x + 3
x = -1
x = 0.5
x = 2
x = 1
What is 3.412 x (1287 ÷ 0.004781) expressed in scientific notation?
9.185 x 10^5
2.692 x 10^5
1.089 x 10^-6
In calculating speed, a person correctly puts 54.235 meters in a calculator (since distance was measured to the nearest millimeter) for distance, and divides that by 13.0 seconds for time (since time was measured to the nearest tenth of a second by a stopwatch). What is the actual speed that should be recorded for these measurements?
The fundamental SI (base) unit for time is the ________.
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