5 physics questions?

Question

1.convert 0.50 kilometers into meters
a. 0.0050 m
b. 50 m
c. 5.0 x 10² m
d. 5.0 x 10³ m

2. express this measurement in standard scientific notation: 501 000
a. 501 x 10 ³
b. 5.01000 x 10 ⁵
c. 5.01 x 10 ⁵
d. 0.501 x 10 ⁶

3. a student measures a length to be 3.4 cm, then 3.4 cm again. the ability of the student to reproduce the measurement exactly shows he has very good:
a. accuracy
b. extrapolation
c. precision
d. interpolation

4. the number of significant digits in the measurement 60.080 kg is:
a. 2
b. 3
c. 4
d. 5

5. which of the following measurements contains zeros that are not significant?
a. 3.050 x 10⁵ mm
b. 0.0053 m
c.45.020 cm
d. 101 g

Answer 1

1.d
2.a
3.a
4.c
5.c
thats not physics

Answer 2

i will do a number of those: a million) use Ohm's regulation: V = I R = 2.4 A x 50 ohms = a hundred and twenty V 2) the term will boost via 4; the completed fee passing via will boost via component to four to sixty 4 uC. 3) ohm's regulation lower back: V = I R or I = V/R = 120V/12 ohms = 10 amps P = I^2 R = 10^2 * 120V = 12000W

Answer 3

1. C.
2 C. ^5
3. C.
4. D.
5. B

Answer 4

1)c
2)c
3)a
4)d
5)b