The second postulate of special relativity states that ____
a. observers cannot detect their uniform motion except relative to other objects
b. observers cannot distinguish locally between inertial forces and uniform gravitational forces due to acceleration and the presence of a massive body
c. the laws of physics are the same for all observers regardless of their motion as long as their speed is constant
d. the speed of light is constant and will be the same for all observers independent of their motion relative to the light source
e. the acceleration of an object is proportional to the applied force and inversely proportional to its mass
d
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Thermal Expansion: The density of water at 0°C is 999.84 kg/m3 and at 4°C it is 999.96 kg/m3. A 1.0-L container, full to the brim with water at 4.0°C is placed in the refrigerator. By the time that the temperature of the water reaches 0.0°C, what volume of water has spilled from the container, assuming that the contraction of the container is negligible?
A. 1.1 × 10-7 m3 B. 1.2 × 10-7 m3 C. 1.3 × 10-7 m3 D. 1.4 × 10-7 m3 E. 1.5 × 10-7 m3
Raul is attending a workshop, but he is having difficulty hearing the speaker because the people behind him are talking. What type of barrier to effective listening is Raul experiencing?
a. Psychological barrier b. Nonverbal distraction c. Grandstanding d. Physical barrier
A 400-g stainless steel tea kettle containing 500 g of water is on the stove. The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m2 and is 2.0 mm thick
At a certain moment, the temperature of the water is 75°C, and it is rising at the rate of 3.0°C per minute. What is the difference in temperature between the inside and the outside of the bottom of the tea kettle? Assume that the inner surface of the kettle is at the same temperature as the water inside. The thermal conductivity of stainless steel is 16.3 W/m ? K, the specific heat of the steel is 448 J/kg ? K, and the specific heat of water is 4186 J/kg ? K. A) 2.2°C B) 1.5°C C) 1.1°C D) 0.50°C E) 0.15°C
Doppler radars at airports are capable of detecting dangerous, downward ______________
Fill in the blank(s) with correct word