Answer:
Kinetic energy is an energy that can be applied to another object, often considered the energy of motion.
Explanation:
Metals are generally good conductors of heat.
B. Killing cancerous cells
C. The transmutation of hydrogen into helium
D. Detecting art forgeries
Detecting art forgeries is one common use of neutron activation analysis. Hence, option D is correct.
NAA is a non-destructive analytical technique that can be used to determine the elemental composition of a sample.
It is particularly useful for the analysis of trace elements, as it is highly sensitive and can detect even very small amounts of elements.
In the field of art conservation, NAA is used to analyze the composition of pigments and other materials used in artworks, which can help to authenticate or identify forgeries.
Neutron activation analysis is a highly versatile and powerful analytical technique that can provide valuable insights into the elemental composition of a wide range of samples. Its sensitivity and accuracy make it an important tool in many scientific fields, including art conservation.
Thus, option D is correct.
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Answer:
a) 0.25 g b) 0.01542 g
Explanation:
Half life of Po-218 = 3.04 minutes
initial mass = 1 g
after 3.04 minutes it will remain 0.5 g
after another 3.04 minutes it will remain 0.25 g
After 6 minutes it will remain approx 0.25 g
B) after another 3.04 minutes it will remain 0.125 g
after another 3.04 minutes it will remain 0.0625 g
after another 3.04 minutes it will remain 0.03125 g
after another 3.04 minutes it will remain 0.015625 g
After 18 minutes it will remain approx 0.01542 g
OB. 1500 kg* m/s south O
C. 6500 kg* m/s south
O 1500 kg* m/s north
Answer: 1500 kg•m/s north
Explanation:
A PE X
The perfect mechanical advantage is four rope segments. This indicates that the compound pulley increases the applied force by a factor of four. For instance, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.
A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Mechanically speaking, a moving pulley has a 2 advantage. The force needed to move any object that is linked to a moving pulley will therefore be halved. This occurs as a result of the rope's fixed end in a moving pulley absorbing some of the force needed to move the object.
Thus, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.
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a fixed pulley is a load multiplier and a movable multiplier is a speed multiplier