Physics Waves And Oscillations Level: High School
The position of a mass that is oscillating on a spring is given by x = (18.3) cos (2.35) s to power of (-1))t] . What is the frequency of this motion ?a) 0.426 Hz .
b) 1.34 Hz .
c) 0.128 Hz .
d) 0.374 Hz .
Physics Waves And Oscillations Level: High School
If your heart is beating at 76.0 beats per minute , what is the frequency of your heart’s oscillations ?a) 4560 Hz .
b) 1450 Hz .
c) 3.98 Hz .
d) 1.27 Hz .
Physics Waves And Oscillations Level: High School
The quartz crystal in a digital watch has a frequency of 32.8 kHz . What is its period of oscillation ?a) 3.05 multiply 10 to power of (exponent) s .
b) 9.58 multiply 10 to power of (exponent) s .
c) 1.91 multiply 10 to power of (exponent) s .
d) 9.71 multiply 10 to power of (exponent) s .
Physics Gravitation Level: High School
Three masses are located as follows : a 3.5 kg mass is at the origin , a 4.2 kg mass at (0.0 m, 7.0 m) , and a 6.5- kg mass at (24.0 m , 0.0 m ) . What is the gravitational energy of the system of masses ? G = 6.67 x 10 to power of (-11) N x m squared / kg squared .a) -2.8 x 10 to power of (-10) J
b) -2.0 x 10 to power of (-10) J
c) -1.4 x 10 to power of (-10) J
d) -3.2 x 10 to power of (-10) J
Physics Gravitation Level: High School
Three masses are located as follows : a 3.0 kg mass is at the origin . a 4.5 kg mass at (0.0 m , 4.0 m 0 and a 2.5 kg mass at (3.0 m, 0.0 m) . What is the gravitational energy of the system of masses ? G = 6.67 x 10 to power of (-11) N x m squared / kg squared .a) -3.8 x 10 to power of (-10) J
b) -3.9 x 10 to power of (-10) J
c) -5.4 x 10 to power of (-10) J
d) -3.2 x 10 to power of (-10) J
Physics Gravitation Level: High School
Kepler's lows
Because Earth’s orbit is slightly elliptical , Earth actually gets closer to the Sun during part of the year . When Earth is closer to the Sun its orbital speed is :
a) Less than When Earth is farthest away from the Sun .
b) The same as when Earth is farthest away from the Sun .
c) Greater than when Earth is farthest away from the Sun .
d) Sometimes greater sometimes smaller than when Earth is farthest away from the Sun .
Physics Gravitation Level: High School
The acceleration due to gravity on the surface of Earth is g . Ceiling R the radius of Earth , at what distance from Earth’s center would the acceleration due to gravity drop to g / 16 ?a) 16 R
b) R/ 16
c) R/4
d) 4 R
Physics Gravitation Level: High School
You are on an airplane traveling with a constant velocity at an altitude of 20000 m . What is the acceleration of gravity at that altitude ? The radius of Earth is 6.37 x 10 to power of (6) m .a) 9.81 m/s squared .
b) 9.78 m/s squared .
c) 9.75 m/s squared .
d) 9.72 m/s squared .
Physics Gravitation Level: High School
What would be the weight of a 59.1 kg astronaut on a planet with the same density as Earth and having twice Earth’s radius ?a) 580 N
b) 290 N
c) 1160 N
d) 2320 N
Physics Gravitation Level: High School
What would be the weight of a 59.1 kg astronaut on a planet twice as massive as Earth and having twice Earth’s radius ?a) 580 N
b) 290 N
c) 1160 N
d) 118 N
Physics Rotational Mechanics Level: High School
A thin hoop with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 3.5 rad/s .What is the kinetic energy ?a) 0.18 J
b) 0.092 J
c) 1.05 J
Physics Rotational Mechanics Level: High School
A soccer ball whose radius is 11 cm rolls a distance of 10 m in 3.50 s , What is the angular speed of the ball ?a) 13 m/s
b) 26 m/s
c) 39 m/s
d) 52 m/s
Physics Rotational Mechanics Level: High School
Uniform circular motion
A child is riding a merry-go-round which completes one revolution every 8.36 s . The child is standing 4.65 m from the center of the merry-go-round . What is the tangential speed of a child ?
a) 5.64 m/s
b) 3.49 m/s
c) 0.556 m/s
d) 1.80 m/s
Physics Rotational Mechanics Level: High School
Rotational Kinematics
A wheel rotates through an angle of 13.8 rad as it slows down from 22.0 rad/s to 13.5 rad/s . What is the magnitude of the average angular acceleration of the wheel ?
a) 0.616 rad/s squared
b) 111 rad/s squared
c) 22.5 rad/s squared
d) 10.9 rad/s squared
Physics Rotational Mechanics Level: High School
Rotational Kinematics
A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s to power of (exponent) .Through wha angle has the wheel turned when its angular speed reaches 72.0 rad/s ?
a) 83.2 rad
b) 697 rad
c) 66.8 rad
d) 948 rad
