Physics, 13.10.2019 05:01 babygirlqueen5588
An iron bar is used to lift a slab of cement. the force applied to lift the slab is 4.0 × 10^2 n. if the slab weighs 6400 n, what is the mechanical advantage of the bar?
Answers: 3
Physics, 21.06.2019 21:30
In what direction does the medium move relative to the direction of the wave? explain.
Answers: 3
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
Physics, 22.06.2019 12:00
This is for my 8th grade science class, i really don’t understand. can someone me? , lol.
Answers: 1
Physics, 22.06.2019 17:20
The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.
Answers: 3
An iron bar is used to lift a slab of cement. the force applied to lift the slab is 4.0 × 10^2 n. if...
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