20 cm at a constant speed up an incline
Physics, 18.03.2021 01:30 bessieyounger1211
Timed Test
A block with a mass of 2 kg is pushed
20 cm at a constant speed up an incline
that makes a 40° angle with the floor.
How much work is done by gravity
on the block? Let D be the displacement
of the block
2.521 J
-3.003 J
-252.1 J
-2.521 J
Answers: 3
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Answers: 3
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Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
Physics, 22.06.2019 20:30
Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600
Answers: 2
Timed Test
A block with a mass of 2 kg is pushed
20 cm at a constant speed up an incline
20 cm at a constant speed up an incline
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