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X -rays Electromagnetic waves can transmit various types of radiation. An astronomer used a special telescope that detected a frequency of 1.2 x 10 ^ 12 Hz . What was the astronomer observing?

A. X-rays
B. Gamma rays
C. Infrared rays
D. Visible light

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.

1) estimating temperature to the nearest tenth of a degree

2) estimating the mass of the sample to the nearest tenth of a gram

4) the position of the cups of sand and water under the heat lamp