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Karolina [17]
3 years ago
11

PHYSICAL SCIENCE

Physics
2 answers:
Elina [12.6K]3 years ago
8 0
<span>B) Nuclear reactions can release much more energy than chemical reactions</span>
likoan [24]3 years ago
3 0
The answer is B.) Nuclear reactions can release much more energy than chemical reactions. Hope it helps! :) 
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A geologist is trying to determine what time period a layer of rock was formed.
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A sailor pulls a crate across the deck of a ship with a rope, exerting a horizontal force of 150. N. The crate, which has a mass
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3 years ago
What is the maximum acceleration the belt can have without the crate slipping? express your answer using two significant figures
Montano1993 [528]

To prevent the crate from slipping, the maximum force that the belt can exert on the crate must be equal to the static friction force.


Ff = 0.5 * 16 * 9.8 = 78.4 N

a = 4.9 m/s^2


If acceleration of the belt exceeds the value determined in the previous question, what is the acceleration of the crate?


In this situation, the kinetic friction force is causing the crate to decelerate. So the net force on the crate is 78.4 N minus the kinetic friction force.


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Net force = 78.4 – 43.904 = 34.496 N

To determine the acceleration, divide by the mass of the crate.

a = 34.496 ÷ 16 = 2.156 m/s^2



8 0
3 years ago
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