When matter and antimatter particles combine, the two particles annihilate each other and convert their mass into energy in the form of two gamma rays
a. True
b. False
Indicate whether the statement is true or false
True
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A metal bar is used to conduct heat. When the temperature at one end is 88.0°C and at the other is 15.0°C, heat is transferred at a rate of 19.0 J/s. The bar is then stretched uniformly to twice its original length. If again it has ends at 88.0°C and 15.0°C, at what rate will heat be transferred between it ends?
a. 4.75 J/s b. 9.50 J/s c. 19.0 J/s d. 38.0 J/s e. 76.0 J/s
A speed of 65 miles per hour is the same as which of the following? (1.00 ft = 30.48 cm)
A) 24 m/s B) 29 m/s C) 32 m/s D) 37 m/s E) 42 m/s
The hydrogen in the universe was formed by
a. the energy of the Big Bang c. radioactive decay of heavy elements b. nuclear fusion reactions in stars d. none of the above
To determine the location of the center of mass of a car, the car is driven over a scale. When the front wheels are over the scale, the weight recorded by the scale is 5800 N, and when the rear wheels are over the scale, the scale reads 6500 N
The distance between the front and rear wheels is 3.20 m. How far behind the front wheels is the center of mass located? A) 0.845 m B) 1.50 m C) 1.59 m D) 1.69 m E) 1.72 m