Physics, 29.03.2021 01:00 angelvences128
Which of the following shows an example of unbalanced forces acting on one or more objects?
A- a person sitting still in a chair
B-two cards leaning against each other
C-one football player pushing another down to the ground
D-two football players pushing each other without either one of them moving
Answers: 2
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If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10
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Select the three ways that the parallel-plate capacitor differs from a car battery.
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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 18:30, okitsfrizz6366
Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.
Answers: 1
Which of the following shows an example of unbalanced forces acting on one or more objects?
A- a pe...
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