Search & Filtering
What is the rest energy of an alpha particle (two protons and two neutrons) in universal mass units?
25. A partly full paint can has 2.75 liters of paint left in it. What is volume of the paint in cubic centimeters? (3)
A) 2.75 x 10-3 cm3 C) 275 x 10-3 cm3 E) 27.5 x 103 cm3
B) 2.75 cm3 D) 2.75 x 103 cm3
24. While observing the obelisk in Saint Peter’s Square in Vatican City, you stand at the edge of the shadow it is casting across the ground, which is about 120 m long. While kneeling, you estimate your line of sight with the top of the obelisk to be about 12o above the horizontal. Approximately how tall is the obelisk? (3)
A) 9.6 m C) 23.1 m E) 26 m
B) 120 m D) 190 m
24. While observing the obelisk in Saint Peter’s Square in Vatican City, you stand at the edge of the shadow it is casting across the ground, which is about 120 m long. While kneeling, you estimate your line of sight with the top of the obelisk to be about 12o above the horizontal. Approximately how tall is the obelisk? (3)
A) 9.6 m C) 23.1 m E) 26 m
B) 120 m D) 190 m
23. A chimpanzee sitting against his favorite tree get up and walk 45 m due north and 22 m due west to reach a termite mound, where he eats lunch. What is the shortest distance between the tree and the termite mound, and what angle does the shortest distance make with respect to due north? (4)
A) 6.9 m; 105o C) 50 m; 26.1o E) 22 m; 45o
B) 10 m; 10o D) 0.08 m; 90o
22. A 10 m long clothesline is strung so that it is perfectly horizontal. When the shirt is hung in the exact center, the line sags to create an angle that is 1o below the horizontal on each end. How far (in cm) below the original height of the line is the center of the clothes? (3)
A) 17 cm C) 0.564 cm E) 1325 cm
B) 9 cm D) 0.004 cm
21. A driver is planning to make a short trip with his car, one that is a distance of 3 km and one that is a distance of 4 km. The resultant displacement from these two trips is 5 km in any given direction. Which of the following vector diagram is correct? (2)
A) B)
C) D)
A body is to be projected from the ground to have a range of 45m.If the horizontal component of its initial velocity is 15m/s ,the angle of projection is where g=10
In a parallel circuit a 50 ohm hairdryer has 2.4 amps of current flowing through it. How much current is flowing through a light bulb which is in parallel with the hairdryer?
john drops a pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.
