A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it
(a) What is Young's modulus for the material from this wire is made?
(b) What is the effective spring constant for the stretching wire?
(a) 1.0 × 1011 Pa (b) 2.2 × 104 N/m
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The Earth's magnetosphere is a
A) sphere of magnetism found just outside the molten outer core of the Earth B) spherical magnetic field generated by magnetic rocks on the Earth's surface C) cavity carved out in the solar wind by the Earth's magnetic field D) sphere of magnetism caused by the motion of charged particles in the Earth's outer atmosphere
Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00 cm-wide slit. What is the total angular width (2?) of diffracted sound waves when the speed of sound in air is 340 m/sec
a. 167° b. 83.6° c. 19.5° d. 41.8° e. 0.11°
At time t = 0.00 s, a car is traveling along a straight line at a speed of 20 m/s with constant acceleration. The car travels 56.0 m during the time interval between t = 2.00 s and t = 4.00 s. What is the acceleration of the car?
A) 14.0 m/ s2 B) 0.00 m/ s2 C) 7.00 m/ s2 D) 5.33 m/ s2 E) 2.67 m/ s2
Population II stars contain more metals than Population I stars
Indicate whether the statement is true or false