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What is the specific heat capacity of a 250, g,
250g object that needs 34, point, 125, k, J,
34.125kJ to have its temperature raised by 65, point, 0, degrees, C,
65.0∘
C?
specific heat capacity of a 250, g,
250g object that needs 34, point, 125, k, J,
34.125kJ to have its temperature raised by 65, point, 0, degrees, C,
65.0∘
C?
Add the following vectors graphically. Use scale 1cm = 1m.
Given: A = 2m, E and B = 5m, 350 N of W, find R = A + B.
11. Using parallelogram method
12. Using polygon method
Add the following vectors graphically. Use scale 1cm = 1m.
13. Two ropes in a vertical plane exert equal magnitude forces on a hanging weight but pull with
an angle of 86o between them. What pull does each one exerts if their resultant pull is 372 N
directly upward? Use component method. (N or Newton is unit of force, a vector quantity)
12.5km³ to cm³
What frequency of sound traveling in air at 20 degrees C has a wavelength equal to 1.6 m, the average height of a person? (Hz)
The force stretching the D string on a certain guitar is 166N. The strings linear mass density is 0.006kg/m. What is the speed of the waves on the string? In m/s
Approximately how many times louder is a 145-dB sound than a 85-dub sound?
In a student laboratory exercise, the wavelength of a 48,300 Hz ultrasound wave is measured to be .716cm. What is the site temprature in (k)??
Two children stretch a jump rope between them and send wave like sea back and forth. The rope is 4.3 meters long, it’s mass is 0.58kg, and the force exerted by the children is 31 N. What is the linear mass density of the rope? (Kg/m)? What is the speed of the waves on the rope? (M/s)?
