A 4000-N weight is held suspended in equilibrium by two cables. Cable 1 applies a horizontal force to the right of the object and has a tension T1 . Cable 2 applies a force upward and to the left at an angle of 37.0° to the negative x axis and has a tension T2 . What is the tension T1?
a. 4000 N
c. 6250 N
b. 6640 N
d. 5310 N
D
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Three point charges are located on the x-axis. The first charge, 
is at x = -1.00 m; the second charge, 
is at the origin; and the third charge, 
is located at x = 2.00 m. What is the force on 
?
A. 1.65 N in the negative x-direction B. 3.15 N in the positive x-direction C. 1.50 N in the negative x-direction D. 4.80 N in the positive x-direction E. 4.65 N in the negative x-direction
Most asteroids are differentiated, as reflected by their spherical shapes
Indicate whether the statement is true or false
Two experimental runs are performed to determine the calorimetric properties of an alcohol which has a melting point of -10° C
In the first run, a 200-g cube of frozen alcohol, at the melting point, is added to 300 g of water at 20°C in a styrofoam container. When thermal equilibrium is reached, the alcohol-water solution is at a temperature of 5°C. In the second run, an identical cube of alcohol is added to 500 g of water at 20°C and the temperature at thermal equilibrium is 10°C. The specific heat capacity of water is 4190 J/kg ? K. Assume no heat is exchanged with the styrofoam container and the surroundings. What is the specific heat capacity of the alcohol? A) 1700 J/kg ? K B) 1900 J/kg ? K C) 2100 J/kg ? K D) 2300 J/kg ? K E) 2500 J/kg ? K
In a Young's double slit experiment, a 5th order maximum occurs at an angle of 
If the screen is 3.90 m from the slits and the slit separation is 0.135 mm, what wavelength is being used?
A. 335 nm B. 670 nm C. 476 nm D. 589 nm E. 690 nm