WorksheetsPhysics Bowl - Home Practice 1
Total questions: 25
Worksheet time: 44mins
Which one of the following choices represents the smallest amount of time?
1 day
1 minute
1 second
1 week
1 year
The position vs. time graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest speed?
At time 𝑡 = 3.0 𝑠 only
At time 𝑡 = 3.5 𝑠 only
At times 𝑡 = 3.5 𝑠 and 𝑡 = 9.0 𝑠
At time 𝑡 = 7.0 𝑠 only
At time 𝑡 = 9.0 𝑠 only
A car accelerates uniformly from 0 𝑘𝑚/ℎ𝑟 to 60 𝑘𝑚/ℎ𝑟 in 4.50 𝑠. Which one of the following choices best represents the acceleration of the car?
13.3 𝑚/𝑠2
9.8 𝑚/𝑠2
4.8 𝑚/𝑠2
3.7 𝑚/𝑠2
0.37 𝑚/𝑠2
The following four length measurements are recorded: 5.4×10−1 𝑚, 5.4×100 𝑚, 5.40×101 𝑚, and 5.400×102 𝑚. Which one of the following choices best represents the sum of these values using the rules of significant digits?
6×102 𝑚
6.0 ×102 𝑚
6.00 ×102 𝑚
5.999×102 𝑚
5.9994×102 𝑚
In the figure shown, the mass 𝑚 = 6.0 𝑘𝑔 and the mass 𝑀 = 14.0 𝑘𝑔 are stationary. The mass 𝑀 rests on the floor. Which one of the following choices represents the tension in the string connecting the masses?
40 𝑁
60 𝑁
80 𝑁
140 𝑁
200 𝑁
An object, thrown straight downward with a speed of 20.0 𝑚/𝑠, takes 2.00 𝑠 to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.
20.0 𝑚
40.0 𝑚
50.0 𝑚
60.0 𝑚
80.0 𝑚
Three cylindrical resistors are made of the same material. The length and radius of each resistor is:
Resistor 1: Length 𝐿, radius 𝑟
Resistor 2: Length 𝐿/2 , radius 𝑟/2
Resistor 3: Length 𝐿/4, radius 𝑟/2
Which one of the following choices correctly ranks the resistance of these resistors (𝑅1, 𝑅2, 𝑅3)?
𝑅1 = 𝑅2 < 𝑅3
𝑅2 < 𝑅1 < 𝑅3
𝑅3 < 𝑅2 < 𝑅1
𝑅1 < 𝑅2 = 𝑅3
𝑅1 = 𝑅3 < 𝑅2
In the history of physics, the names Nicolaus Copernicus, Galileo Galilei, James Clerk Maxwell, and Isaac Newton are very recognizable. Which one of the following choices correctly orders these names chronologically by the approximate dates of each person’s scientific work (ending with the most recent)?
Copernicus → Galileo → Newton → Maxwell
Copernicus → Galileo → Maxwell → Newton
Galileo → Copernicus → Newton → Maxwell
Galileo → Newton → Copernicus → Maxwell
Newton → Copernicus → Maxwell → Galileo
In the circuit shown, an electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the electric field through the interior of the resistor?
A
B
C
D
E
A person wishes to accelerate an object upward uniformly. Which one of the following choices must be true of the force, 𝐹, provided by the person onto the object? 𝑊 represents the magnitude of the gravitational force acting on the object. Ignore any effects of the air or of the Earth’s rotation.
𝐹 = 𝑊
𝐹 ≥ 𝑊
𝐹 > 𝑊
𝐹 ≥ 2𝑊
𝐹 > 2𝑊
A 12.0 𝑁 net force directed to the right is exerted on a 3.0 𝑘𝑔 block for 5.0 𝑠. The block was initially at rest and slides on a horizontal surface. What is the speed of the block at the end of the 5.0 𝑠 interval?
12 𝑚/𝑠
15 𝑚/𝑠
20 𝑚/𝑠
36 𝑚/𝑠
60 𝑚/𝑠
A 12.0 𝑁 net force directed to the right is exerted on a 3.0 𝑘𝑔 block for 5.0 𝑠. The block was initially at rest and slides on a horizontal surface. What is the kinetic energy associated with the block after the 5.0 𝑠 interval?
180 𝐽
600 𝐽
800 𝐽
1200 𝐽
1600 𝐽
For the inclined plane shown, which one of the following choices best represents the value of the incline’s ideal mechanical advantage?
1.67
1.33
1.25
0.80
0.75
A scientist obtains an answer that has units equivalent to those from computing the square root of the ratio of the Universal Gravitational constant to Coulomb’s constant. Which one of the following choices has these same units?
energy divided by time
length divided by time
mass divided by energy
electric field strength divided by magnetic field strength
charge divided by mass
A radio station broadcasts its signal at a frequency of 100.0 𝑀𝐻𝑧. What is the wavelength of the station’s signal?
3.00 𝑘𝑚
3.00 𝑚
3.00 𝑚𝑚
0.33 𝑚
0.33 𝑘𝑚
A uniform stick is fixed to rotate about an axis through its center. The stick starts from rest and rotates through an angle of 90° in a time of 1.0 𝑠. If the angular acceleration of the stick is constant, what is the angular speed of the stick about its rotation axis after one full revolution?
4𝜋 𝑟𝑎𝑑/𝑠
2√2 𝜋 𝑟𝑎𝑑/𝑠
2𝜋 𝑟𝑎𝑑/𝑠
√2 𝜋 𝑟𝑎𝑑/𝑠
𝜋 𝑟𝑎𝑑/𝑠
“All planets in the solar system follow elliptical orbits with the Sun located at one focus of the ellipse.” This statement is best summarized by which one of the following choices?
Kepler’s First Law
Kepler’s Second Law
Newton’s Universal Law of Gravitation
Einstein’s Law of Gravity
Schwarzchild’s Law of Orbits
For any motion in two dimensions, which one of the following choices identifies quantities that must have the same direction?
average velocity and displacement
average acceleration and average velocity
average acceleration and displacement
final velocity and average acceleration
final velocity and displacement
An ideal gas in a sealed container with 1.20×1024 particles has a pressure of 1.0 𝑎𝑡𝑚 at a temperature of 27.0 ℃. Which one of the following choices best represents the volume of the container?
450 𝑚3
4.5 𝑚3
0.49 𝑚3
0.049 𝑚3
0.00049 𝑚3
A uniform 10.0 𝑚 long plank is pivoted about its center of gravity. A mass 𝑀1 then is placed at the left edge of the plank and a second mass 𝑀2 is placed 1.0 𝑚 from the right end. This system is in static equilibrium (shown). If each mass now is moved 2.0 𝑚 closer to the center of the plank, which one of the following choices best describes the subsequent motion of the plank?
The plank remains in static equilibrium.
The plank rotates at constant angular speed until the right side reaches the ground.
The plank rotates at constant angular speed until the left side reaches the ground.
The plank angularly accelerates until the right side reaches the ground.
The plank angularly accelerates until the left side reaches the ground.
At 1.94 𝑠 after launch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 𝑚/𝑠, what was the projectile’s initial angle of launch from the horizontal?
82.6°
52.3°
50.6°
39.4°
37.7°
For the nuclear reaction shown here, which one of the following choices correctly identifies the quantity labeled 𝑋?
A
B
C
D
E
At a party, two spherical balloons are expanded to have the same radius. Balloon #1 is filled with helium gas while balloon #2 is filled with xenon gas. Which one of the following statements about the buoyant forces on the balloons is correct?
The buoyant force is greater for the helium balloon.
The buoyant force is greater for the xenon balloon.
The buoyant force is the same for each balloon.
The balloon experiencing the greater buoyant force cannot be determined without knowing the radius.
The balloon experiencing the greater buoyant force cannot be determined without knowing the atmospheric pressure at the time.
A proton moves with constant non-zero velocity in a region of space that has a uniform magnetic field directed into the plane of the page. The proton moves directly up the plane of the page. What is the direction of the electric field in this region of space? Ignore gravity.
To the left
To the right
Down the plane of the page
Up the plane of the page
There is no electric field necessary
The plates of a large parallel-plate capacitor are separated by a distance of 0.05 𝑚. The potential difference between the plates is 24.0 𝑉. A charge released from rest between the plates experiences an electric force of 1.00 𝑁. What is the magnitude of the charge released between the plates?
2.08 𝑚𝐶
4.17 𝑚𝐶
8.33 𝑚𝐶
16.6 𝑚𝐶
33.3 𝑚𝐶
