An FM radio station broadcasts at 98.6 MHz. What is the wavelength of the radiowaves?
a. 60.8 m
b. 6.08 m
c. 3.04 m
d. 0.314 m
e. 0.33 cm
c
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The explosion in a cannon exerts an average force of 30,000 N for L meters, the length of the cannon. The length of the cannon to shoot a 2.00 kg projectile from the cannon on the earth to the moon is
A. 2.75 km. B. 3.01 km. C. 3.98 km. D. 4.26 km. E. 5.02 km.
A filtergram is used to study layers below the photosphere
Indicate whether the statement is true or false
A 360-g metal container, insulated on the outside, holds 180.0 g of water in thermal equilibrium at 22.0°C
A 24.0-g ice cube, at the melting point, is dropped into the water, and when thermal equilibrium is reached the temperature is 15.0°C. Assume there is no heat exchange with the surroundings. For water, the specific heat capacity is 4190 J/kg ? K and the heat of fusion is 3.34 × 105 J/kg. What is the specific heat capacity of the metal of the container? A) 970 J/kg ? K B) 2800 J/kg ? K C) 1700 J/kg ? K D) 2300 J/kg ? K E) 3300 J/kg ? K
Compound Microscope: In a compound microscope
A. both the objective and the eyepiece form real images. B. magnification is provided by the objective lens and not by the eyepiece. The eyepiece merely increases the resolution of the image viewed. C. magnification is provided by the objective and not by the eyepiece. The eyepiece merely increases the brightness of the image viewed. D. the magnification is m1 + M2, where m1 is the lateral magnification of the objective and M2 is the angular magnification of the eyepiece. E. the image of the objective serves as the object for the eyepiece.