Delve AP Physics C Quiz 2

1. The brick has more relative to the ground but not the center of the earth
2. The cinderblock has more relative to the ground but not the center of the earth
3. The brick has more relative to both the ground and the center of the earth
4. The cinderblock has more relative to both the ground and the center of the earth
5. In both cases, both have the potential energy

1. \(100 J\)
2. \(200 J\)
3. \(300 J\)
4. \(400 J\)
5. \(500 J\)

1. A, then B, then C
2. A, then C, then B
3. B, then A, then C
4. B, then C, then A
5. C, then A, then B

1. The change in potential energy
2. The negative of the change in potential energy
3. The work done by the force
4. The work done by gravity
5. The work done by gravity plus the work done by the force.

1. \(\frac1{\sqrt{2}} m\)
2. \(1m\)
3. \(\sqrt{2} m\)
4. \(\sqrt{3} m\)
5. \(2m\)

1. \(25 J\)
2. \(50 J\)
3. \(100 J\)
4. \(200 J\)
5. \(250 J\)

1. Kinetic
2. Potential
3. Heat
4. Light
5. Sound

1. Both energies are unchanged
2. Its kinetic energy of motion increases and total energy decreases
3. Its kinetic energy of motion increases and so does its total energy
4. Its kinetic energy of motion decreases and total energy increases
5. Its kinetic energy of motion decreases, as does it total energy

1. The two blocks will oscillate with the same period, but the first will move faster at the equilibrium position
2. The first block will move faster and oscillate with the larger period
3. The first block will move slower but oscillate with larger period
4. The first block will move faster but oscillate with lesser period
5. The two block will move with the same speed but the first block will oscillate with a larger period

1. \(kg / s^2\)
2. \(kg m / s^2\)
3. \(kg m^2 / s^2\)
4. \(kg m / s\)
5. \(kg / s\)

1. \(55 J\)
2. \(70 J\)
3. \(85 J\)
4. \(100 J\)
5. \(115 J\)

1. Yes

1. The mass of the nyan cat
2. The volume of the meterstick
3. The period of oscillation of the block, were it attached to the spring
4. The equilibrium length of the spring
5. The speed of sound

1. \(0.1 m/s\)
2. \(0.3 m/s\)
3. \(1 m/s\)
4. \(3 m/s\)
5. \(10 m/s\)

1. \(100 W\)
2. \(1000 W\)
3. \(10,000 W\)
4. \(100,000 W\)
5. \(1,000,000 W\)

1. \(+ 5 J\)
2. \(0 J\)
3. \(-5 J\)
4. It depends on the angle of incline
5. It depends on the absolute speed of the block

1. \(+12 J\)
2. \(+6 J\)
3. \(0 J\)
4. \(-6 J\)
5. \(-12 J\)

1. The kinetic energy of the system does not change; that of the block increases
2. The kinetic energy of the system increases, that of the block increases
3. The kinetic energy of the system decreases, that of the block does not change
4. The kinetic energy of the system does not change, and neither does that of the block
5. None of the above

You have a standard, symmetric, four-legged table, standing on an inclined plane, oriented as the figure on the below. Let’s say the front of the table is the edge facing downhill. Removing which set of legs would cause the table to fall over, no matter the angle (greater than zero) of the inclined plane? Assume the legs are infinitely thin.

i) The two back legs

ii) One front leg;

iii) One front and one back leg, diagonally opposite each other.

1. (i) only
2. (i) and (iii)
3. (iii) only
4. (ii) and (iii)
5. (i), (ii), and (iii)

1. The speed would increase if we did either
2. The speed would decrease if we did either
3. The speed would increase if we added spokes, but decrease if we thickened the rim
4. The speed would decrease if we added spokes, but increase if we thickened the rim
5. The speed would be unchanged in either case

1. Conservation of momentum
2. Conservation of angular momentum
3. Conservation of energy
4. First law of thermodynamics
5. Newton’s law of Universal Gravitation

1. 10
2. 25
3. 50
4. 100
5. 200

1. \(I ω^2\)
2. \(\frac{L^2}{2 I}\)
3. \(ω \frac{L}{2I^2}\)
4. \((\frac{d}{dt}) L ω^2\)
5. \(2 π / ω\)

1. The potential energy decreases linearly with time, the kinetic energy decreases quadratically with time
2. The potential energy increases quadratically, the kinetic energy decreases linearly
3. The potential energy and kinetic energy do not change
4. Potential energy decreases linearly with time, the kinetic energy increases linearly
5. The potential energy decreases quadratically with time, the kinetic energy increases quadratically with time

1. The heavier one is has less kinetic energy per unit of mass
2. The lighter one is has less kinetic energy per unit of mass
3. It depends on the masses of the two objects
4. Their relative energy per unit of mass depends on the absolute mass of the two objects
5. The two objects have the same energy per unit of mass

1. \(2.5 kJ\)
2. \(25 kJ\)
3. \(250 kJ\)
4. \(2.5 MJ\)
5. \(25 MJ\)

1. \(\frac14 ω\)
2. \(\frac1{2\sqrt2} ω\)
3. \(\frac12 ω\)
4. \(\frac1{\sqrt2} ω\)
5. \(ω\)