Author Question: A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What are the ... (Read 270 times)

craiczarry · **on:** Jul 28, 2018

A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What are the magnitude and direction of the displacement for this trip?
a. 1400 m, northeast
b. 2000 m, 36.9 north of east
c. 2000 m, 53.1 north of east
d. 2800 m, 36.9 east of north
e. 2800 m, 53.1 east of north

Question 2

The energy level diagram for hydrogen

The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is

a.
1.5 eV.

b.
1.9 eV.

c.
3.4 eV.

d.
10.2 eV.

e.
13.6 eV.