10. The period of rotation of the Sun is 2.125 x 1 11. Human hair grows at the rate of 3 nanometers 1. Which term is not a fundamental unit? (1) kilogram (2) meter seconds. This is equivalent to 2.125 (2) ms (3) second (4) watt (3) Ms (1) us (4) Ts 2. Which quantity and unit are correctly paired? (1) electric current - coulomb (2) frequency (3) power - (4) resistivity per second. This rate is equivalent to (3) 3 x 10 mis (4) 3 x 101 mis - hertz -joule - ohm (1) 3 x 10 m/s (2) 3 x 10-6 mis 12. The wavelength of red light is 7 x 10- Express this value in nanometers. 13. If m represents mass in kg, v represents speed m/s, and r represents radius in m, show that s force Fin the formula F= can be expressed in the unit kg m/s. meter. 3. Which amount of power is the smallest? (1) 1 gigawatt (2) 2 kilowatts (3) 3 megawatts (4) 4 watts %3D 4. Which length is the shortest? (1) 1 um 14. If PE, represents the potential energy stored ina spring in kg - m/s, and x represents the change in spring length from its equilibrium position in (2) 2 mm (3) 3 nm (4) 4 cm 5. Continental drift speed is 1 x 10 meter per second. This is equivalent to a speed of (1) 1 Tm/s (2) 1 Gm/s (3) 1 nm/s (4) 1 pm/s m, what is the unit for the spring constant k in the formula PE, = kx? %3! 6. The diameter of 12-gauge wire is 2.053 x 10-3 meter. This is equivalent to 2.053 (2) mm 15. If F, represents the electrostatic force in N that point charge q, in C exerts on point charge q2 in C, and r represents the distance between the point charges in m, what is the unit for the electrostatic constant k in the formula F = (1) km (3) um (4) nm 7. The energy in half a tank of gasoline is 1,000,000,000 joules. Express this value in gigajoules. (1) N. m/C (2) N- m? (3) N C/m? (4) N. m?/C 8. The mean radius of Earth is 6,000,000 meters. Express this value in kilometers. 16. Using dimensional analysis, show that the expression has the same units as acceleratic 9. Which length is 10 times greater than a nanometer? (1) um (2) mm (3) cm (4) km
10. The period of rotation of the Sun is 2.125 x 1 11. Human hair grows at the rate of 3 nanometers 1. Which term is not a fundamental unit? (1) kilogram (2) meter seconds. This is equivalent to 2.125 (2) ms (3) second (4) watt (3) Ms (1) us (4) Ts 2. Which quantity and unit are correctly paired? (1) electric current - coulomb (2) frequency (3) power - (4) resistivity per second. This rate is equivalent to (3) 3 x 10 mis (4) 3 x 101 mis - hertz -joule - ohm (1) 3 x 10 m/s (2) 3 x 10-6 mis 12. The wavelength of red light is 7 x 10- Express this value in nanometers. 13. If m represents mass in kg, v represents speed m/s, and r represents radius in m, show that s force Fin the formula F= can be expressed in the unit kg m/s. meter. 3. Which amount of power is the smallest? (1) 1 gigawatt (2) 2 kilowatts (3) 3 megawatts (4) 4 watts %3D 4. Which length is the shortest? (1) 1 um 14. If PE, represents the potential energy stored ina spring in kg - m/s, and x represents the change in spring length from its equilibrium position in (2) 2 mm (3) 3 nm (4) 4 cm 5. Continental drift speed is 1 x 10 meter per second. This is equivalent to a speed of (1) 1 Tm/s (2) 1 Gm/s (3) 1 nm/s (4) 1 pm/s m, what is the unit for the spring constant k in the formula PE, = kx? %3! 6. The diameter of 12-gauge wire is 2.053 x 10-3 meter. This is equivalent to 2.053 (2) mm 15. If F, represents the electrostatic force in N that point charge q, in C exerts on point charge q2 in C, and r represents the distance between the point charges in m, what is the unit for the electrostatic constant k in the formula F = (1) km (3) um (4) nm 7. The energy in half a tank of gasoline is 1,000,000,000 joules. Express this value in gigajoules. (1) N. m/C (2) N- m? (3) N C/m? (4) N. m?/C 8. The mean radius of Earth is 6,000,000 meters. Express this value in kilometers. 16. Using dimensional analysis, show that the expression has the same units as acceleratic 9. Which length is 10 times greater than a nanometer? (1) um (2) mm (3) cm (4) km
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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need help with questions 1 through 11
Transcribed Image Text:11. Human hair grows at the rate of3 nanometers
10. The period of rotation of the Sun is 2.125 x 1
side of the equation must also have the dimension time. The urits e
The units of length divide out and T- VT. The factor 2 has no urits
igure 1-1, The time 7 required to complete one cycle ot
to gravity. Because the period represents time, the expression on the
acceleration due to gravity, m/s, can be expressed as length ( in metens
is the period of the pendulum, e is the length, and g is the acceleratiam
e perod of a simple pend
Sional equation after
substituting the units of
acceleration due to gravity
of ton
Tools
In mos
e. The r
divided by T in seconds squared, or
sof
df the
measa
Figure 1-1. Analyze units to
solve problems
meas
it is not considered in the analysis.
Mea
The
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Review
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by
0.
Questions
1. Which term is not a fundamental unit?
(1) kilogram
(2) meter
(3) second
(4) watt
seconds. This is equivalent to 2.125
(3) Ms
(1) us
(2) ms
(4) Ts
2. Which quantity and unit are correctly paired?
(1) electric current - coulomb
(2) frequency- hertz
(3) power
(4) resistivity
(1) 3 x 10 m/s
(2) 3 x 10- m/s
12. The wavelength of red light is 7 x 107 meter
Express this value in nanometers.
per second. This rate is equivalent to
(3) 3 x 10 mis
(4) 3 x 1012 m/s
joule
ohm
3. Which amount of power is the smallest?
(1) 1 gigawatt
(2) 2 kilowatts
(3) 3 megawatts
(4) 4 watts
13. If m represents mass in kg, v represents speedi
m/s, and r represents radius in m, show that the
force Fin the formula F= can be expressed
in the unit kg m/s?.
14. If PE, represents the potential energy stored in a
spring in kg - m?/s, and x represents the changn
in spring length from its equilibrium position in
m, what is the unit for the spring constant k in
the formula PE, - kx??
4. Which length is the shortest?
(1) 1 um
(2) 2 mm (3) 3 nm (4) 4 cm
5. Continental drift speed is 1 x 10-9 meter per
second. This is equivalent to a speed of
(1) 1 Tm/s (2) 1 Gm/s (3) 1 nm/s (4) 1 pm/s
6. The diameter of 12-gauge wire is 2.053 x 10-3
meter. This is equivalent to 2.053
(3) um
15. If F. represents the electrostatic force in N that
point charge q, in C exerts on point charge q,
in C, and r represents the distance between
the point charges in m, what is the unit for the
electrostatic constant k in the formula F = ?
(1) km
(2) mm
(4) nm
7. The energy in half a tank of gasoline is
1,000,000,000 joules. Express this value in
gigajoules.
(1) N.m?/C?
(2) N. m?
(3) N C/m?
(4) N. m?/C
8. The mean radius of Earth is 6,000,000 meters.
Express this value in kilometers.
9. Which length is 106 times greater than a
nanometer?
16. Using dimensional analysis, show that the
expression has the same units as acceleration.
(1) µm
(2) mm
(3) cm
(4) km
4 Topic 1: Measurement and Mathematics
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