A student measured four electromagnetic waves of different frequencies and wavelengths. Wave Measured
Frequency (Hz)
Wavelength (m)
1
4.44 X 1014
6.76 X 107
2
8.90 X 1015
3.37 X 10-8
3
2.03 X 1016
1.48 X 10-8
4
5.75 X 1016
5.22 X 109
Which electromagnetic wave has the most energy?
A
wave 1
B
wave 2
wave 3
D
wave 4

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.