Title: End of Unit Assessment
Course: MNPCC Physics > Section: Introduction to Physics

This assessment is your chance to prove what it is you learned in this unit.

Q: Given that there are 8 bits per byte, which of the following correctly shows how to convert from 128 bytes to bits?
- 128 bytes(8 bits / 1 byte) (Correct)
- 128 bytes (8 bytes / 1 bit) (That is not the correct relationship.)
- 128 bytes (1 bit / 8 bytes) (The units evaluate correctly, but that is not the correct relationship.)
- 128 bytes (1 byte / 8 bits) (That is the correct relationship, but the units will not work out.)
A: 128 bytes(8 bits / 1 byte)
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: Which of the following seems like an appropriate length for somebody’s foot?
- 28 cm (Correct)
- 28 m (Way too big!)
- 2.8 cm (Way too small!)
- 2.8 m (Way too big!)
A: 28 cm
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: Which of the following is a reasonable mass for a remote control car?
- 0.45 kg (Correct.)
- 0.45 g (Way too small!)
- 45 kg (Way too big!)
- 45 g (Way too small!)
A: 0.45 kg
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: In what place would you find the uncertain digit for a measurement using the device pictured here?

image by Ant75 / Public Domain
- One's place (Correct)
- Ten's Place (Not precise enough.)
- Hundredth's place (too precise)
- Tenth's place (too precise)
A: One's place
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: A metal rod has been measured to be 1.24 m long. Which of the following measurements would not be accurate to level of uncertainty with which it was made. (An answer is not wrong just because it is not as precise as others).
- 1.28 (Correct)
- 1.2 m (This is accurate to the precision since 1.24 rounds to 1.2.)
- 1.25 m (This is only 0.01 off, which is well within the uncertainty of the measurement.)
- 1 m (This is accurate to the precision since 1.24 rounds to 1.)
A: 1.28
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: Choose the unit your answer will have when evaluating the following.

12 m / (3 m/s)
- s (Correct)
- m (The meters cancels out.)
- m/s (The meters cancels out and the seconds will no longer be on the denominator.)
- 1/s (The seconds will no longer be on the denominator.)
A: s
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: Choose the unit your answer will have when evaluating the following.

15 m + 5 m
- m (Correct)
- m^2 (Your are adding, not multiplying.)
- mm (Units don’t add that way)
A: m
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: What type of relationship did you find between the mass of gum and the chewing time?
- Indirect (Correct)
- Direct (No, as the time went on the mass went down.)
- No relationship. (There was a relationship, the mass went down as the time went down.)
A: Indirect
If right: Your answer is correct.
If wrong: Your answer is incorrect.

Q: What did you find in the pendulum lab that had the strongest relationship to the period of the pendulum?
- Pendulum Length (Correct)
- Pendulum Mass (The mass in essence makes no difference.)
- Pull back amount (While pull back makes a small difference, it was not the strongest relationship.)
- All were equally related. (One was clearly more related than the others.)
A: Pendulum Length
If right: Your answer is correct.
If wrong: Your answer is incorrect.